Ventilator mechanical ventilation management method and device, ventilator and medium

Abstract

This invention relates to the field of ventilator technology, and discloses a method, device, ventilator, and medium for managing mechanical ventilation in a ventilator. The method includes: acquiring mechanical ventilation parameters; determining that the ventilator is operating in a target ventilation mode based on the mechanical ventilation parameters, performing leak detection on the ventilator, and obtaining a leak detection result; when the leak detection result indicates that mechanical ventilation is normal, performing oxygenation management on the target subject, and obtaining an oxygenation management result; when the oxygenation management result indicates that blood oxygen saturation reaches a preset oxygenation threshold, performing pH testing on the target subject, and obtaining a pH testing result; when the pH testing result indicates that the pH is within a preset pH testing range, maintaining continuous operation of the ventilator in the target ventilation mode. This invention simplifies complex adjustment processes through algorithmic control, reduces repetitive work, lowers the professional requirements for operators, and thus improves adjustment efficiency.

Description

Technical Field

[0001] This invention relates to the field of ventilator technology, and in particular to a ventilator mechanical ventilation management method, device, ventilator, and medium. Background Technology

[0002] Mechanical ventilation is a ventilation method that uses mechanical devices to replace, control, or change spontaneous breathing movements; ventilator-controlled ventilation modes are divided into volume control, pressure control, and pressure-regulated volume control.

[0003] Current technologies require monitoring multiple data points, including airway pressure and flow, respiratory carbon dioxide fraction or percentage, heart rate, respiratory rate, and blood oxygen saturation. This is labor-intensive and demands a high level of expertise from operators, leading to delays in certain procedures and making ventilator parameter adjustments extremely complex. Furthermore, during ward rounds, it is not possible to adjust ventilator settings promptly based on the current status of various physiological measurements. Summary of the Invention

[0004] This invention provides a method, device, ventilator, and medium for managing mechanical ventilation of a ventilator, in order to solve the problem in the prior art that the ventilator settings cannot be adjusted in a timely manner according to the current status of various physiological measurements.

[0005] A method for managing mechanical ventilation on a ventilator includes:

[0006] Obtain mechanical ventilation parameters;

[0007] When the ventilator is determined to be running in the target ventilation mode based on the mechanical ventilation parameters, a leak detection is performed on the ventilator running in the target ventilation mode to obtain the leak detection results.

[0008] When the leak detection result indicates that there is no abnormality in mechanical ventilation, oxygenation management is performed on the target object corresponding to the ventilator running in the target ventilation mode to obtain the oxygenation management result;

[0009] When the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, the acid-base value of the target object corresponding to the ventilator running in the target ventilation mode is detected to obtain the acid-base value detection result.

[0010] When the pH test result indicates that the pH value is within the preset pH test range, the ventilator continues to operate in the target ventilation mode.

[0011] A mechanical ventilation management device for ventilators, comprising:

[0012] The ventilation mode module is used to acquire mechanical ventilation parameters;

[0013] The leak detection module is used to perform leak detection on the ventilator operating in the target ventilation mode when the ventilator is determined to be operating in the target ventilation mode based on the mechanical ventilation parameters, and to obtain the leak detection result.

[0014] The oxygenation management module is used to perform oxygenation management on the target object corresponding to the ventilator operating in the target ventilation mode when the leak detection result indicates that there is no abnormality in mechanical ventilation, and to obtain the oxygenation management result.

[0015] The pH detection module is used to detect the pH of the target object corresponding to the ventilator operating in the target ventilation mode when the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, and to obtain the pH detection result.

[0016] The continuous operation module is used to keep the ventilator running continuously in the target ventilation mode when the pH test result indicates that the pH value is within the preset pH test range.

[0017] A ventilator includes a memory, a controller, and a computer program stored in the memory and executable on the controller. When the controller executes the computer program, it implements the aforementioned ventilator mechanical ventilation management method.

[0018] A computer-readable storage medium storing a computer program that, when executed by a controller, implements the aforementioned ventilator mechanical ventilation management method.

[0019] The present invention provides a ventilator mechanical ventilation management method, device, ventilator, and medium. By detecting leaks in a ventilator operating in a target ventilation mode, it achieves tidal volume detection and obtains the leak detection results. It also performs oxygenation management on the target object corresponding to the ventilator operating in the target ventilation mode, achieving blood oxygen saturation detection and obtaining the oxygenation management results. Furthermore, by detecting the pH value of the target object corresponding to the ventilator operating in the target ventilation mode, it achieves pH value detection results, thereby realizing the monitoring and adjustment of the ventilator's mechanical ventilation, reducing the monitoring and adjustment work of the target object, and reducing the burden on staff. Moreover, through algorithmic control, it simplifies the complex adjustment process, reduces repetitive work, lowers the professional requirements of operators, and thus improves adjustment efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of a ventilator mechanical ventilation management method according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic block diagram of a ventilator mechanical ventilation management device according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a ventilator in one embodiment of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a method for managing mechanical ventilation on a ventilator. In one embodiment, as follows: Figure 1 As shown, its technical solution mainly includes the following steps:

[0026] S10, obtain mechanical ventilation parameters.

[0027] Understandably, mechanical ventilation parameters refer to the operating parameters of a ventilator. These parameters are obtained by setting the ventilator's operating parameters using the target subject's physical data. In another embodiment, the target subject's physical data is matched to find the closest matching data, and the operating parameters corresponding to this matching data are determined as the mechanical ventilation parameters. Examples include CMV (A / C) (CMV stands for Continuous Mandatory Ventilation, A / C for Assisted / Controlled Ventilation), VCV (Volume-Controlled Ventilation) or PCV (Pressure-Controlled Ventilation), respiratory rate of 10-20 breaths per minute, tidal volume of 4-8 ml / kg, inspiratory time (Ti) of 0.5-0.8 s, and PEEP (Positive End-Expiratory Pressure).

[0028] 5cmH2O, FiO2 (inhaled oxygen concentration) 100%.

[0029] S20, when the ventilator is determined to be running in the target ventilation mode according to the mechanical ventilation parameters, a leak detection is performed on the ventilator running in the target ventilation mode to obtain the leak detection result.

[0030] Understandably, leak detection results are used to characterize whether there is a leak in the ventilator tubing.

[0031] Specifically, after acquiring the mechanical ventilation parameters, the ventilator is set to operate in the target ventilation mode and executed according to the mechanical ventilation parameters. Then, a leak detection is performed on the ventilator operating in the target ventilation mode. This involves collecting the exhaled tidal volume and inhaled tidal volume of the target subject through sensors, calculating the ratio between the exhaled and inhaled tidal volumes, and then comparing this ratio with a preset ratio to determine if there is a leak. The comparison result is then taken as the leak detection result. If the leak detection result indicates that the mechanical ventilation is normal, the process proceeds to step S30. If the leak detection result indicates that the mechanical ventilation is abnormal, the process proceeds to step S205.

[0032] S30, when the leak detection result indicates that there is no abnormality in mechanical ventilation, oxygenation management is performed on the target object corresponding to the ventilator operating in the target ventilation mode to obtain the oxygenation management result.

[0033] Understandably, oxygenation management results are used to characterize whether blood oxygen saturation has reached a preset oxygenation threshold.

[0034] Specifically, when the leak detection result indicates that there is no abnormality in mechanical ventilation, oxygenation management is performed on the target object corresponding to the ventilator operating in the target ventilation mode. That is, the blood oxygen saturation of the target object and the preset oxygenation threshold are obtained. By comparing the blood oxygen saturation and the preset oxygenation threshold, it is determined that the blood oxygen saturation has reached the preset oxygenation threshold, and the comparison result is determined as the oxygenation management result.

[0035] S40, when the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, the acid-base value of the target object corresponding to the ventilator operating in the target ventilation mode is detected to obtain the acid-base value detection result.

[0036] S50, when the pH test result indicates that the pH value is within the preset pH test range, the ventilator continues to operate in the target ventilation mode.

[0037] Understandably, pH test results are used to characterize whether the pH value is within the preset pH detection range. The target ventilation mode refers to the ventilation mode in the mechanical ventilation parameters.

[0038] Specifically, when the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, the target subject corresponding to the ventilator operating in the target ventilation mode is subjected to acid-base level testing. This involves obtaining the target subject's acid-base level and a preset acid-base testing range, comparing the target subject's acid-base level with the preset range to determine if the target subject's acid-base level falls within the preset range, and defining the comparison result as the acid-base level test result. Furthermore, when the acid-base level test result indicates that the acid-base level is within the preset range, the ventilator continues to operate in the target ventilation mode and with the required mechanical ventilation parameters.

[0039] This invention, through leak detection of a ventilator operating in a target ventilation mode, achieves tidal volume detection and obtains leak detection results. Oxygenation management is performed on the target device corresponding to the ventilator operating in the target ventilation mode, achieving blood oxygen saturation detection and obtaining oxygenation management results. By detecting the pH level of the target device corresponding to the ventilator operating in the target ventilation mode, the pH level detection results are obtained, thereby enabling the monitoring of mechanical ventilation management of the ventilator, reducing the monitoring and adjustment work of the target device, and alleviating the burden on staff. Furthermore, through algorithmic control, the complex adjustment process is simplified, repetitive work is reduced, the professional requirements for operators are lowered, and thus adjustment efficiency is improved.

[0040] In one embodiment, step S20 involves performing a leak detection on the ventilator operating in the target ventilation mode to obtain a leak detection result. The leak detection result includes a first leak detection result characterizing the absence of abnormalities in mechanical ventilation, and a second leak detection result characterizing the presence of abnormalities in mechanical ventilation; including:

[0041] S201, Collect the exhaled tidal volume and inhaled tidal volume of the target object.

[0042] S202, detect whether the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to a preset ratio.

[0043] S203, when the ratio between the exhaled tidal volume and the inhaled tidal volume is less than the preset ratio, a first leakage detection result is obtained.

[0044] S204, when the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, a second leakage detection result is obtained.

[0045] Understandably, exhaled tidal volume refers to the volume of air exhaled during quiet breathing. Inhaled tidal volume refers to the volume of air inhaled during quiet breathing. A first leak test result indicates that mechanical ventilation is normal. A second leak test result indicates that mechanical ventilation is abnormal.

[0046] Specifically, the exhaled tidal volume and inhaled tidal volume of the target object are collected using a flow sensor. This can be done through real-time monitoring or after a preset ventilation duration, thus obtaining the target object's exhaled and inhaled tidal volumes. Next, the ratio between the exhaled and inhaled tidal volumes is calculated. Then, a preset ratio is obtained and compared to the target object. When the ratio is less than the preset ratio, a first leak detection result is obtained, indicating no abnormalities in mechanical ventilation, and the process proceeds to step S30. When the ratio is greater than or equal to the preset ratio, a second leak detection result is obtained, indicating an abnormality in mechanical ventilation, and a leak information is alerted to the preset processing unit. The flow sensor is positioned close to the target object to ensure the accuracy of the collected data.

[0047] In this embodiment, by detecting whether the ratio between exhaled tidal volume and inhaled tidal volume is greater than or equal to a preset ratio, the detection of intubation leakage is realized. This enables the determination of the first leakage detection result used to characterize the absence of abnormalities in mechanical ventilation, and the second leakage detection result used to characterize the presence of abnormalities in mechanical ventilation. This reduces repetitive work and lowers the professional requirements for operators.

[0048] In one embodiment, after step S204, that is, after obtaining the second leak detection result when the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, the method further includes:

[0049] S205, alerts the preset handling party to the air leak information.

[0050] S206, after obtaining the system evaluation result of the preset processing party based on the leakage information, the operating parameters of the ventilator are adjusted based on the system evaluation result so that the tidal volume of the target object corresponding to the ventilator reaches the adjustment threshold range, and then the ventilator is re-detected for leakage to obtain a new leakage detection result.

[0051] Understandably, the preset treatment refers to the physician or nurse, or the client, etc. The system evaluation result refers to the parameters adjusted based on leak information. The system evaluation result refers to the results obtained by adjusting the ventilation mode (CMV, VCV, or PCV), the preset adjustment range of respiratory rate, the low tidal volume (e.g., between 4-8 ml / kg), the shorter the inspiratory time (e.g., Ti 0.5-0.8 s), and the lower the positive end-expiratory pressure, based on the assessment and adjustment of airway pressure. The adjustment threshold range refers to the tidal volume range obtained based on the predicted proportion.

[0052] Specifically, when the ratio of exhaled tidal volume to inhaled tidal volume is greater than or equal to a preset ratio, a second leak detection result is obtained to characterize abnormal mechanical ventilation. This leak information is then sent to the preset handling system, i.e., by alerting on-site personnel via sound and light, and by notifying off-site personnel via text message or email. Next, the system assessment results, based on the leak information, are obtained and fed back by the preset handling system. Specifically, to minimize leakage, adjustments are made to tidal volume, respiratory rate, positive end-expiratory pressure, inspiratory time, airway pressure, and ventilation mode, and the adjusted parameters are fed back as system assessment results. Then, based on the system assessment results, the ventilator's operating parameters are adjusted. When the ventilation mode changes, the ventilation mode is adjusted first, followed by the ventilator's operating parameters; when the ventilation mode remains unchanged, the ventilator's operating parameters are adjusted directly to ensure that the tidal volume of the target patient corresponds to the ventilator and falls within the adjustment threshold range. Next, the ventilator is re-tested for leaks. This involves re-collecting the exhaled tidal volume and inhaled tidal volume using the flow sensor, and then comparing the ratio between the collected results with a preset ratio to obtain new leak detection results.

[0053] In this embodiment, leak information is alerted to a preset processing unit, thus ensuring the safety of the target subject. Based on the system evaluation results, the ventilator's operating parameters are adjusted to bring the target subject's tidal volume within the adjustment threshold range. By re-detecting leaks in the ventilator, new leak detection results are obtained, thereby simplifying the complex adjustment process and improving adjustment efficiency.

[0054] In one embodiment, step S30 involves performing oxygenation management on the target subject corresponding to the ventilator operating in the target ventilation mode to obtain oxygenation management results. These results include a first oxygenation result indicating that the blood oxygen saturation has not reached a preset oxygenation threshold, and a second oxygenation result indicating that the blood oxygen saturation has reached the preset oxygenation threshold.

[0055] S301, acquire the inhaled oxygen concentration and blood oxygen saturation of the target object, as well as the positive end-expiratory pressure of the ventilator, and compare the blood oxygen saturation with the preset oxygenation threshold.

[0056] S302, when the blood oxygen saturation is less than the preset oxygenation threshold, a first oxygenation result is obtained, and the inhaled oxygen concentration is compared with the preset oxygen concentration to obtain a concentration comparison result.

[0057] S303, when the concentration comparison result indicates that the inhaled oxygen concentration is less than the preset oxygen concentration, the inhaled oxygen concentration is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0058] S304, after continuously adjusting the inhaled oxygen concentration for a first preset duration, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and then a second oxygenation result is obtained when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0059] Understandably, the concentration comparison results are used to characterize the magnitude of the inhaled oxygen concentration and the preset oxygen concentration. The preset oxygen concentration refers to the inhaled oxygen concentration set according to the specific circumstances of the target subject. The first preset duration is set according to specific circumstances, for example, 30 seconds.

[0060] Specifically, when the leak detection results show no abnormalities, the inhaled oxygen concentration and blood oxygen saturation of the target subject, as well as the positive end-expiratory pressure of the ventilator, are obtained. This can be achieved by measuring the inhaled oxygen concentration using an oxygen analyzer connected to the ventilator or oxygen mask, or by collecting a blood sample from the target subject using a blood gas analyzer to indirectly calculate the inhaled oxygen concentration. A blood oxygen saturation monitor is used to obtain the target subject's blood oxygen saturation, and the positive end-expiratory pressure is read from the ventilator. Then, the obtained blood oxygen saturation is compared with a preset oxygenation threshold. When the blood oxygen saturation is lower than the preset oxygenation threshold, a first oxygenation result is obtained, indicating that the blood oxygen saturation has not reached the preset oxygenation threshold. The inhaled oxygen concentration is then compared with a preset oxygen concentration to obtain the preset oxygen concentration. Further, when the concentration comparison result indicates that the inhaled oxygen concentration is lower than the preset oxygen concentration, the inhaled oxygen concentration is increased to make the blood oxygen saturation greater than the preset oxygenation threshold. This means adjusting the oxygen concentration and increasing it by 2% to ensure that the blood oxygen saturation is greater than the preset oxygenation threshold. The adjustment amount is set within the range of 2% to 5%. For example, if the inhaled oxygen concentration is 90%, the oxygen concentration is increased by 5%; if the inhaled oxygen concentration is 92%, the oxygen concentration is increased by 3%. Then, after continuously adjusting the inhaled oxygen concentration for a first preset time, that is, after the adjustment is completed, the inhaled oxygen concentration is maintained at the first preset time, and the blood oxygen saturation and inhaled oxygen concentration are collected again and compared again. Then, when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold, a second oxygenation result is obtained to characterize that the blood oxygen saturation has reached the preset oxygenation threshold.

[0061] In this embodiment, the inhaled oxygen concentration is compared with a preset oxygen concentration to obtain the concentration comparison result. By adjusting the inhaled oxygen concentration, the blood oxygen saturation is adjusted to be greater than the preset oxygenation threshold. By re-comparing, a second oxygenation result, used to characterize that the blood oxygen saturation has reached the preset oxygenation threshold, is obtained.

[0062] In one embodiment, after step S302, i.e., after comparing the inhaled oxygen concentration with a preset oxygen concentration to obtain the concentration comparison result, the following steps are included:

[0063] S305, when the concentration comparison result indicates that the inhaled oxygen concentration is greater than the preset oxygen concentration, the positive end-expiratory pressure is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0064] S306, after continuously adjusting the second preset duration of the positive end-expiratory pressure, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and then when it is determined that the blood oxygen saturation is greater than the preset oxygenation threshold, a second oxygenation result is obtained.

[0065] Understandably, the second preset duration is set according to the target object, and can be the same as or different from the first preset duration.

[0066] Specifically, after obtaining the concentration comparison results, when the concentration comparison results indicate that the inhaled oxygen concentration is greater than the preset oxygen concentration, the positive end-expiratory pressure (PEEP) is increased to make the blood oxygen saturation greater than the preset oxygenation threshold. That is, the PEEP is adjusted, and 2 cmH2O is added to make the blood oxygen saturation greater than the preset oxygenation threshold. The adjustment amount is set according to the difference between the inhaled oxygen concentration and the preset oxygen concentration. Further, after continuously adjusting the PEEP for a second preset duration, that is, after maintaining the adjusted PEEP for a second preset duration, blood oxygen saturation, inhaled oxygen concentration, and PEEP are collected again and compared again. Then, when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold, a second oxygenation result is obtained to indicate that the blood oxygen saturation has reached the preset oxygenation threshold.

[0067] In this embodiment, by increasing the positive end-expiratory pressure when the inhaled oxygen concentration is greater than the preset oxygen concentration, the blood oxygen saturation is adjusted to be greater than the preset oxygenation threshold, thus improving the adjustment efficiency. After continuously adjusting the positive end-expiratory pressure for a second preset duration, the blood oxygen saturation and the preset oxygenation threshold are compared again, thereby obtaining the second oxygenation result and reducing repetitive work.

[0068] In one embodiment, step S40 involves performing a pH test on the target object corresponding to the ventilator operating in the target ventilation mode to obtain a pH test result. The pH test result includes a first pH comparison result characterizing an excessively low pH value and a second pH comparison result characterizing an excessively high pH value.

[0069] S401, Obtain the actual pH value corresponding to the target object.

[0070] S402, when the actual acid-base value is less than the minimum value of the preset acid-base detection range, a first acid-base comparison result is obtained, and the respiratory rate is increased based on the first acid-base comparison result so that the actual acid-base value increases to be within the preset acid-base detection range.

[0071] S403, when the actual acid-base value is greater than the maximum value of the preset acid-base detection range, a second acid-base comparison result is obtained, and the breathing rate is reduced based on the second acid-base comparison result so that the actual acid-base value is reduced to within the preset acid-base detection range.

[0072] Understandably, the actual pH value refers to the pH value detected in real time. The preset pH detection range is set according to the target object.

[0073] Specifically, when the oxygenation management result indicates that the blood oxygen saturation reaches a preset oxygenation threshold, the actual acid-base value of the target subject is obtained. This is achieved by analyzing the target subject's blood using a blood gas analyzer. Then, a preset acid-base detection range is obtained, and the actual acid-base value is compared to this range. When the actual acid-base value is less than the minimum value of the preset range, a first acid-base comparison result is obtained, indicating that the acid-base value is too low. Following this, the respiratory rate is increased based on the first acid-base comparison result to bring the actual acid-base value back within the preset range. Further, when the actual acid-base value exceeds the maximum value of the preset range, a second acid-base comparison result is obtained, indicating that the acid-base value is too high. Following this, the respiratory rate is decreased based on the second acid-base comparison result to reduce the actual acid-base value back within the preset range.

[0074] In this embodiment, by comparing the actual pH value with the preset pH detection range, the respiratory rate is increased based on the first pH comparison result so that the actual pH value is increased to within the preset pH detection range. Conversely, the respiratory rate is decreased based on the second pH comparison result so that the actual pH value is decreased to within the preset pH detection range. Through algorithmic control, the complex adjustment process is simplified, repetitive work is reduced, and adjustment efficiency is improved.

[0075] In one embodiment, step S40, which involves performing pH testing on the target object corresponding to the ventilator operating in the target ventilation mode to obtain pH test results, further includes:

[0076] S404, Obtain the respiratory rate adjustment threshold; the respiratory rate adjustment threshold includes a minimum adjustment threshold and a maximum adjustment threshold.

[0077] S405, when the actual acid-base value is less than the minimum value of the preset acid-base detection range, a first acid-base difference between the actual acid-base value and the minimum value of the preset acid-base detection range is determined. When the first acid-base difference is greater than a preset difference threshold, the respiratory rate is adjusted based on the maximum adjustment threshold so that the actual acid-base value increases to be within the preset acid-base detection range.

[0078] S406, when the actual acid-base value is greater than the maximum value of the preset acid-base detection range, a second acid-base difference between the actual acid-base value and the maximum value of the preset acid-base detection range is determined. When the second acid-base difference is less than a preset difference threshold, the respiratory rate is adjusted based on the minimum adjustment threshold so that the actual acid-base value is reduced to within the preset acid-base detection range.

[0079] Understandably, the respiratory rate adjustment threshold refers to the range within which the respiratory rate can be adjusted. The respiratory rate adjustment threshold includes a minimum adjustment threshold and a maximum adjustment threshold. For example, the minimum adjustment threshold is 2 breaths per minute; the maximum adjustment threshold is 5 breaths per minute. The preset difference threshold is set based on a preset acid-base detection range, for example, 0.1. When the preset acid-base detection range is 7.35 to 7.45, if the actual acid-base value is between 7.25 and 7.35 or between 7.45 and 7.55, the minimum adjustment threshold is used for adjustment; if the actual acid-base value is less than 7.25 or greater than 7.55, the maximum adjustment threshold is used for adjustment. The first acid-base difference refers to the difference between the actual acid-base value and the minimum value of the preset acid-base detection range. The second acid-base difference refers to the difference between the actual acid-base value and the maximum value of the preset acid-base detection range.

[0080] Specifically, a respiratory rate adjustment threshold is obtained, and the actual pH value is compared with a preset pH detection range. When the actual pH value is less than the minimum value of the preset pH detection range, a first pH difference between the actual pH value and the minimum value of the preset pH detection range is calculated. Then, a preset difference threshold is obtained, and the first pH difference is compared with the preset difference threshold. When the first pH difference is greater than the preset difference threshold, the respiratory rate is adjusted by a maximum adjustment threshold to increase the actual pH value to within the preset pH detection range. Alternatively, when the first pH difference is less than or equal to the preset difference threshold, the respiratory rate is adjusted by a minimum adjustment threshold to increase the actual pH value to within the preset pH detection range.

[0081] Furthermore, when the actual pH value exceeds the maximum value of the preset pH detection range, a second pH difference is calculated between the actual pH value and the maximum value of the preset pH detection range. Then, a preset difference threshold is obtained, and the second pH difference is compared with the preset difference threshold. When the second pH difference is less than the preset difference threshold, the respiratory rate is adjusted by a minimum adjustment threshold to reduce the actual pH value to within the preset pH detection range. Alternatively, when the second pH difference is greater than or equal to the preset difference threshold, the respiratory rate is adjusted by a maximum adjustment threshold to reduce the actual pH value to within the preset pH detection range.

[0082] In this embodiment, by adjusting the respiratory rate threshold, different adjustment thresholds are used at different times, improving adjustment efficiency and reducing the number of adjustments. Furthermore, when the first or second acid-base difference is greater than a preset difference threshold, the respiratory rate is adjusted based on the maximum adjustment threshold to increase the actual acid-base value to within the preset acid-base detection range. Conversely, the respiratory rate is adjusted based on the minimum adjustment threshold to decrease the actual acid-base value to within the preset acid-base detection range.

[0083] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0084] In one embodiment, a ventilator mechanical ventilation management device is provided, which corresponds one-to-one with the ventilator mechanical ventilation management method described in the above embodiments. For example... Figure 2 As shown, the mechanical ventilation management device for this ventilator includes a ventilation mode module 10, a leak detection module 20, an oxygenation management module 30, a pH detection module 40, and a continuous operation module 50. Detailed descriptions of each functional module are as follows:

[0085] Ventilation mode module 10 is used to acquire mechanical ventilation parameters;

[0086] The leak detection module 20 is used to perform leak detection on the ventilator operating in the target ventilation mode when the ventilator is determined to be operating in the target ventilation mode according to the mechanical ventilation parameters, and to obtain the leak detection result.

[0087] Oxygenation management module 30 is used to perform oxygenation management on the target object corresponding to the ventilator operating in the target ventilation mode when the leak detection result indicates that there is no abnormality in mechanical ventilation, and to obtain the oxygenation management result.

[0088] The pH detection module 40 is used to detect the pH of the target object corresponding to the ventilator operating in the target ventilation mode when the oxygenation management result characterizes the blood oxygen saturation to reach the preset oxygenation threshold, and obtain the pH detection result.

[0089] The continuous operation module 50 is used to keep the ventilator running continuously in the target ventilation mode when the pH value detection result indicates that the pH value is within the preset pH value detection range.

[0090] In one embodiment, the leak detection results include a first leak detection result characterizing the absence of abnormalities in mechanical ventilation, and a second leak detection result characterizing the presence of abnormalities in mechanical ventilation; the leak detection module 20 includes:

[0091] Tidal volume acquisition unit, used to acquire the exhaled tidal volume and inhaled tidal volume of the target object;

[0092] A ratio detection unit is used to detect whether the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to a preset ratio.

[0093] The first leak detection result unit is used to obtain a first leak detection result when the ratio between the exhaled tidal volume and the inhaled tidal volume is less than the preset ratio.

[0094] The second leak detection result unit is used to obtain a second leak detection result when the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio.

[0095] In one embodiment, the second leak detection result unit includes:

[0096] The notification unit is used to notify the preset handling party of the air leak information;

[0097] The adjustment detection unit is used to adjust the operating parameters of the ventilator based on the system evaluation results fed back by the preset processing party after obtaining the system evaluation results based on the leakage information, so that the tidal volume of the target object corresponding to the ventilator reaches the adjustment threshold range, and then re-detects the leakage of the ventilator to obtain a new leakage detection result.

[0098] In one embodiment, the oxygenation management result includes a first oxygenation result characterizing that the blood oxygen saturation has not reached a preset oxygenation threshold, and a second oxygenation result characterizing that the blood oxygen saturation has reached the preset oxygenation threshold; the oxygenation management module 30 includes:

[0099] The saturation comparison unit is used to obtain the inhaled oxygen concentration and blood oxygen saturation of the target object, as well as the positive end-expiratory pressure of the ventilator, and compare the blood oxygen saturation with the preset oxygenation threshold.

[0100] The inhaled oxygen concentration comparison unit is used to obtain a first oxygenation result when the blood oxygen saturation is less than the preset oxygenation threshold, and to compare the inhaled oxygen concentration with the preset oxygen concentration to obtain a concentration comparison result;

[0101] A concentration increasing unit is used to increase the inhaled oxygen concentration when the concentration comparison result indicates that the inhaled oxygen concentration is less than the preset oxygen concentration, so that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0102] The first duration unit is adjusted to re-compare the blood oxygen saturation and the preset oxygenation threshold after continuously adjusting the inhaled oxygen concentration for a first preset duration, and then obtain a second oxygenation result when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0103] In one embodiment, the oxygenation management module 30 includes:

[0104] The positive end-expiratory pressure (PEEP) unit is used to increase the PEEP when the concentration comparison result indicates that the inhaled oxygen concentration is greater than the preset oxygen concentration, so that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0105] The second duration unit is adjusted to re-compare the blood oxygen saturation and the preset oxygenation threshold after continuously adjusting the second preset duration of the positive end-expiratory pressure, and then obtain the second oxygenation result when it is determined that the blood oxygen saturation is greater than the preset oxygenation threshold.

[0106] In one embodiment, the pH value detection result includes a first pH comparison result for characterizing an excessively low pH value, and a second pH comparison result for characterizing an excessively high pH value; the pH value detection module 40 includes:

[0107] The actual pH value unit is used to obtain the actual pH value corresponding to the target object;

[0108] An additional respiratory rate unit is used to obtain a first acid-base comparison result when the actual acid-base value is less than the minimum value of the preset acid-base detection range, and to increase the respiratory rate based on the first acid-base comparison result so that the actual acid-base value increases to be within the preset acid-base detection range.

[0109] The breathing rate reduction unit is used to obtain a second acid-base comparison result when the actual acid-base value is greater than the maximum value of the preset acid-base detection range, and reduce the breathing rate based on the second acid-base comparison result so that the actual acid-base value is reduced to within the preset acid-base detection range.

[0110] In one embodiment, the pH detection module 40 includes:

[0111] An adjustment threshold unit is used to obtain a respiratory rate adjustment threshold; the respiratory rate adjustment threshold includes a minimum adjustment threshold and a maximum adjustment threshold;

[0112] The maximum adjustment threshold unit is used to determine a first acid-base difference between the actual acid-base value and the minimum value of the preset acid-base detection range when the actual acid-base value is less than the minimum value of the preset acid-base detection range; and to adjust the respiratory rate based on the maximum adjustment threshold when the first acid-base difference is greater than the preset difference threshold, so that the actual acid-base value increases to be within the preset acid-base detection range.

[0113] A minimum adjustment threshold unit is used to determine a second acid-base difference between the actual acid-base value and the maximum value of the preset acid-base detection range when the actual acid-base value is greater than the maximum value of the preset acid-base detection range, and to adjust the respiratory rate based on the minimum adjustment threshold when the second acid-base difference is less than a preset difference threshold, so as to reduce the actual acid-base value to within the preset acid-base detection range.

[0114] Specific limitations regarding the mechanical ventilation management device for ventilators can be found in the limitations of the mechanical ventilation management method for ventilators mentioned above, and will not be repeated here. Each module in the aforementioned mechanical ventilation management device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the controller of the ventilator in hardware form or independent of it, or they can be stored in the memory of the ventilator in software form, so that the controller can call and execute the corresponding operations of each module.

[0115] In one embodiment, a ventilator is provided, the internal structure of which can be shown in the following diagram. Figure 3 As shown, the ventilator includes a controller, memory, network interface, and database connected via a system bus. The controller provides computing and control capabilities. The memory includes a readable storage medium and internal memory. The readable storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the readable storage medium. The network interface is used for communication with external terminals via a network connection. When executed by the controller, the computer program implements a ventilator mechanical ventilation management method.

[0116] In one embodiment, a ventilator is provided, including a memory, a controller, and a computer program stored in the memory and executable on the controller, wherein the controller executes the computer program to implement the ventilator mechanical ventilation management method described above.

[0117] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a controller, implements the ventilator mechanical ventilation management method described above.

[0118] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0119] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0120] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A ventilator, comprising a memory, a controller, and a computer program stored in the memory and executable on the controller, characterized in that, The controller is used to perform the following steps: Obtain mechanical ventilation parameters; When the ventilator is determined to be running in the target ventilation mode based on the mechanical ventilation parameters, a leak detection is performed on the ventilator running in the target ventilation mode to obtain the leak detection results. When the leak detection result indicates that there is no abnormality in mechanical ventilation, oxygenation management is performed on the target object corresponding to the ventilator running in the target ventilation mode to obtain the oxygenation management result; When the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, the acid-base value of the target object corresponding to the ventilator running in the target ventilation mode is detected to obtain the acid-base value detection result. When the pH test result indicates that the pH value is within the preset pH test range, the ventilator shall continue to operate in the target ventilation mode. The oxygenation management results include a first oxygenation result indicating that the blood oxygen saturation has not reached the preset oxygenation threshold, and a second oxygenation result indicating that the blood oxygen saturation has reached the preset oxygenation threshold. The oxygenation management of the target subject corresponding to the ventilator operating in the target ventilation mode, and the resulting oxygenation management, includes: The oxygen concentration and blood oxygen saturation of the target object, as well as the positive end-expiratory pressure of the ventilator, are obtained, and the blood oxygen saturation is compared with the preset oxygenation threshold. When the blood oxygen saturation is less than the preset oxygenation threshold, a first oxygenation result is obtained, and the inhaled oxygen concentration is compared with the preset oxygen concentration to obtain a concentration comparison result; When the concentration comparison result indicates that the inhaled oxygen concentration is less than the preset oxygen concentration, the inhaled oxygen concentration is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold. After continuously adjusting the inhaled oxygen concentration for a first preset duration, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and a second oxygenation result is obtained when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold.

2. The ventilator as described in claim 1, characterized in that, The leak detection results include a first leak detection result to characterize that mechanical ventilation is normal, and a second leak detection result to characterize that mechanical ventilation is abnormal. The process of performing leak detection on the ventilator operating in the target ventilation mode and obtaining the leak detection results includes: Collect the exhaled tidal volume and inhaled tidal volume of the target object; Detect whether the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to a preset ratio; When the ratio between the exhaled tidal volume and the inhaled tidal volume is less than the preset ratio, a first air leakage detection result is obtained. When the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, a second leakage detection result is obtained.

3. The ventilator as described in claim 2, characterized in that, After obtaining the second leak detection result when the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, the method further includes: Notify the preset handling party of the air leak information; After obtaining the system evaluation results from the preset processing unit based on the leak information, the operating parameters of the ventilator are adjusted based on the system evaluation results so that the tidal volume of the target object corresponding to the ventilator reaches the adjustment threshold range. Then, the ventilator is re-detected for leaks to obtain new leak detection results.

4. The ventilator as described in claim 1, characterized in that, After comparing the inhaled oxygen concentration with the preset oxygen concentration to obtain the concentration comparison result, the process includes: When the concentration comparison result indicates that the inhaled oxygen concentration is greater than the preset oxygen concentration, the positive end-expiratory pressure is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold. After continuously adjusting the second preset duration of the positive end-expiratory pressure, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and then a second oxygenation result is obtained when it is determined that the blood oxygen saturation is greater than the preset oxygenation threshold.

5. The ventilator as described in claim 1, characterized in that, The pH value detection results include a first pH value comparison result for characterizing a pH value that is too low, and a second pH value comparison result for characterizing a pH value that is too high. The step of performing pH value detection on the target object corresponding to the ventilator operating in the target ventilation mode, and obtaining the pH value detection result, includes: Obtain the actual pH value corresponding to the target object; When the actual pH value is less than the minimum value of the preset pH detection range, a first pH comparison result is obtained, and the respiratory rate is increased based on the first pH comparison result so that the actual pH value increases to be within the preset pH detection range. When the actual pH value is greater than the maximum value of the preset pH detection range, a second pH comparison result is obtained, and the breathing rate is reduced based on the second pH comparison result so that the actual pH value is reduced to within the preset pH detection range.

6. The ventilator as described in claim 5, characterized in that, The step of performing acid-base level detection on the target object corresponding to the ventilator operating in the target ventilation mode, and obtaining the acid-base level detection result, further includes: Obtain the respiratory rate regulation threshold; the respiratory rate regulation threshold includes a minimum regulation threshold and a maximum regulation threshold; When the actual pH value is less than the minimum value of the preset pH detection range, a first pH difference is determined between the actual pH value and the minimum value of the preset pH detection range. When the first pH difference is greater than a preset difference threshold, the respiratory rate is adjusted based on the maximum adjustment threshold so that the actual pH value increases to be within the preset pH detection range. When the actual acid-base value is greater than the maximum value of the preset acid-base detection range, a second acid-base difference is determined between the actual acid-base value and the maximum value of the preset acid-base detection range. When the second acid-base difference is less than a preset difference threshold, the respiratory rate is adjusted based on the minimum adjustment threshold so that the actual acid-base value is reduced to within the preset acid-base detection range.

7. A mechanical ventilation management device for a ventilator, characterized in that, include: The ventilation mode module is used to acquire mechanical ventilation parameters; The leak detection module is used to perform leak detection on the ventilator operating in the target ventilation mode when the ventilator is determined to be operating in the target ventilation mode based on the mechanical ventilation parameters, and to obtain the leak detection result. The oxygenation management module is used to perform oxygenation management on the target object corresponding to the ventilator operating in the target ventilation mode when the leak detection result indicates that there is no abnormality in mechanical ventilation, and to obtain the oxygenation management result. The pH detection module is used to detect the pH of the target object corresponding to the ventilator operating in the target ventilation mode when the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, and to obtain the pH detection result. The continuous operation module is used to keep the ventilator running continuously in the target ventilation mode when the pH value detection result indicates that the pH value is within the preset pH value detection range. The oxygenation management results include a first oxygenation result indicating that the blood oxygen saturation has not reached the preset oxygenation threshold, and a second oxygenation result indicating that the blood oxygen saturation has reached the preset oxygenation threshold. The oxygenation management module includes: The saturation comparison unit is used to obtain the inhaled oxygen concentration and blood oxygen saturation of the target object, as well as the positive end-expiratory pressure of the ventilator, and compare the blood oxygen saturation with the preset oxygenation threshold. The inhaled oxygen concentration comparison unit is used to obtain a first oxygenation result when the blood oxygen saturation is less than the preset oxygenation threshold, and to compare the inhaled oxygen concentration with the preset oxygen concentration to obtain a concentration comparison result; A concentration increasing unit is used to increase the inhaled oxygen concentration when the concentration comparison result indicates that the inhaled oxygen concentration is less than the preset oxygen concentration, so that the blood oxygen saturation is greater than the preset oxygenation threshold. The first duration unit is adjusted to re-compare the blood oxygen saturation and the preset oxygenation threshold after continuously adjusting the inhaled oxygen concentration for a first preset duration, and then obtain a second oxygenation result when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold.

8. A computer-readable storage medium storing a computer program, characterized in that, The computer program is executed by the controller to perform the following steps: Obtain mechanical ventilation parameters; When the ventilator is determined to be running in the target ventilation mode based on the mechanical ventilation parameters, a leak detection is performed on the ventilator running in the target ventilation mode to obtain the leak detection results. When the leak detection result indicates that there is no abnormality in mechanical ventilation, oxygenation management is performed on the target object corresponding to the ventilator running in the target ventilation mode to obtain the oxygenation management result; When the oxygenation management result indicates that the blood oxygen saturation reaches the preset oxygenation threshold, the acid-base value of the target object corresponding to the ventilator running in the target ventilation mode is detected to obtain the acid-base value detection result. When the pH test result indicates that the pH value is within the preset pH test range, the ventilator shall continue to operate in the target ventilation mode. The oxygenation management results include a first oxygenation result indicating that the blood oxygen saturation has not reached the preset oxygenation threshold, and a second oxygenation result indicating that the blood oxygen saturation has reached the preset oxygenation threshold. The oxygenation management of the target subject corresponding to the ventilator operating in the target ventilation mode, and the resulting oxygenation management, includes: The oxygen concentration and blood oxygen saturation of the target object, as well as the positive end-expiratory pressure of the ventilator, are obtained, and the blood oxygen saturation is compared with the preset oxygenation threshold. When the blood oxygen saturation is less than the preset oxygenation threshold, a first oxygenation result is obtained, and the inhaled oxygen concentration is compared with the preset oxygen concentration to obtain a concentration comparison result; When the concentration comparison result indicates that the inhaled oxygen concentration is less than the preset oxygen concentration, the inhaled oxygen concentration is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold. After continuously adjusting the inhaled oxygen concentration for a first preset duration, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and a second oxygenation result is obtained when it is confirmed that the blood oxygen saturation is greater than the preset oxygenation threshold.

9. The computer-readable storage medium as claimed in claim 8, characterized in that, The leak detection results include a first leak detection result to characterize that mechanical ventilation is normal, and a second leak detection result to characterize that mechanical ventilation is abnormal. The process of performing leak detection on the ventilator operating in the target ventilation mode and obtaining the leak detection results includes: Collect the exhaled tidal volume and inhaled tidal volume of the target object; Detect whether the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to a preset ratio; When the ratio between the exhaled tidal volume and the inhaled tidal volume is less than the preset ratio, a first air leakage detection result is obtained. When the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, a second leakage detection result is obtained.

10. The computer-readable storage medium as claimed in claim 9, characterized in that, After obtaining the second leak detection result when the ratio between the exhaled tidal volume and the inhaled tidal volume is greater than or equal to the preset ratio, the computer program, when executed by the controller, further implements the following steps: Notify the preset handling party of the air leak information; After obtaining the system evaluation results from the preset processing unit based on the leak information, the operating parameters of the ventilator are adjusted based on the system evaluation results so that the tidal volume of the target object corresponding to the ventilator reaches the adjustment threshold range. Then, the ventilator is re-detected for leaks to obtain new leak detection results.

11. The computer-readable storage medium as claimed in claim 8, characterized in that, After comparing the inhaled oxygen concentration with the preset oxygen concentration to obtain the concentration comparison result, the computer program, when executed by the controller, also performs the following steps: When the concentration comparison result indicates that the inhaled oxygen concentration is greater than the preset oxygen concentration, the positive end-expiratory pressure is increased so that the blood oxygen saturation is greater than the preset oxygenation threshold. After continuously adjusting the second preset duration of the positive end-expiratory pressure, the blood oxygen saturation and the preset oxygenation threshold are re-compared, and then a second oxygenation result is obtained when it is determined that the blood oxygen saturation is greater than the preset oxygenation threshold.

12. The computer-readable storage medium as claimed in claim 8, characterized in that, The pH value detection results include a first pH value comparison result for characterizing a pH value that is too low, and a second pH value comparison result for characterizing a pH value that is too high. The step of performing pH value detection on the target object corresponding to the ventilator operating in the target ventilation mode, and obtaining the pH value detection result, includes: Obtain the actual pH value corresponding to the target object; When the actual pH value is less than the minimum value of the preset pH detection range, a first pH comparison result is obtained, and the respiratory rate is increased based on the first pH comparison result so that the actual pH value increases to be within the preset pH detection range. When the actual pH value is greater than the maximum value of the preset pH detection range, a second pH comparison result is obtained, and the breathing rate is reduced based on the second pH comparison result so that the actual pH value is reduced to within the preset pH detection range.

13. The computer-readable storage medium as claimed in claim 12, characterized in that, The step of performing acid-base level detection on the target object corresponding to the ventilator operating in the target ventilation mode, and obtaining the acid-base level detection result, further includes: Obtain the respiratory rate regulation threshold; the respiratory rate regulation threshold includes a minimum regulation threshold and a maximum regulation threshold; When the actual pH value is less than the minimum value of the preset pH detection range, a first pH difference is determined between the actual pH value and the minimum value of the preset pH detection range. When the first pH difference is greater than a preset difference threshold, the respiratory rate is adjusted based on the maximum adjustment threshold so that the actual pH value increases to be within the preset pH detection range. When the actual acid-base value is greater than the maximum value of the preset acid-base detection range, a second acid-base difference is determined between the actual acid-base value and the maximum value of the preset acid-base detection range. When the second acid-base difference is less than a preset difference threshold, the respiratory rate is adjusted based on the minimum adjustment threshold so that the actual acid-base value is reduced to within the preset acid-base detection range.

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