Valsalva test automatic detection method, device, system and storage medium

Abstract

This invention discloses an automatic detection method, apparatus, system, and storage medium for the Warburg test. The Warburg test apparatus, connected to an upright tilt test bed, includes: acquiring physiological parameters of the test subject during the upright tilt test according to time axis information and sending them to a processor. The physiological parameters include airflow information, which includes direction and flow rate information. The airflow information is smoothed to obtain the airflow value at the current time point. The air valve in the Warburg test apparatus is opened or closed based on the direction information and the airflow value. During the upright tilt test, the Warburg respiration test is automatically performed synchronously according to the tilt state, and this data can be recorded synchronously with other detected physiological parameters, thereby making the test data more accurate.

Description

Technical Field

[0001] The present application relates to the field of gas detection technology, and in particular to a Valsalva test automatic detection method, device, system and storage medium. Background Art

[0002] The Valsalva test can actively stimulate the stress response of the autonomic nervous system, help understand the regulatory ability of the autonomic nervous system, and also examine the respiratory and circulatory systems. The Valsalva test is generally divided into three stages according to the breathing situation: the inhalation stage, the breath-holding stage, and the exhalation stage.

[0003] In the traditional test process, the opening and closing of the valve needs to be controlled manually or mechanically. For the short-term Valsalva test, it is easy to miss the best triggering time, and distract the subject's attention, which is not conducive to the true reflection of the autonomic nervous system. Especially in the process of syncope test, the test subject needs to be tilted at multiple angles. In this process, the existing Valsalva test that controls the opening and closing of the valve manually or mechanically requires multiple doctors to operate, which wastes manpower and material resources, and the measurement timing is not easy to grasp, resulting in inaccurate test data. Summary of the invention

[0004] The present application discloses a Valsalva test gas detection method, device, storage medium and equipment, which can synchronously and automatically perform Valsalva test gas detection during a self-supporting tilt test process.

[0005] Specifically, on the one hand, the present application discloses an automatic detection method for a Valsalva test, which is used for a Valsalva test device connected to an upright tilt test bed, comprising:

[0006] Acquire physiological parameters of the tester during the head-up tilt test according to the timeline information and send them to the processor, wherein the physiological parameters include airflow information, and the airflow information includes direction information and flow information;

[0007] Smoothing the airflow information to obtain an airflow value at a current time point;

[0008] The opening or closing of the air valve in the Valsalva test device is controlled according to the direction information and the airflow value, wherein the opening or closing state of the air valve corresponds to two or more breathing test states of the Valsalva test.

[0009] The step of smoothing the airflow information to obtain the airflow value at the current time point includes:

[0010] Sequentially obtain the flow information of the current time point and the flow information of two or more adjacent time intervals;

[0011] The flow information at the current time point and the flow information at two or more adjacent time intervals are weighted averaged to obtain the airflow value at the current time point.

[0012] Wherein, controlling the opening or closing of the air valve in the Valsalva test device according to the direction information and the airflow value includes:

[0013] Identify whether the airflow value at the current time point meets a first preset condition;

[0014] When the first preset condition is met, the gas valve is controlled to close.

[0015] The first preset condition includes a preset decrease ratio that the airflow value at the current time point is less than the airflow value at the previous second preset time period.

[0016] Wherein, when the first preset condition is met, after controlling the gas valve to close, the method further includes:

[0017] Identify whether the closing time of the gas valve reaches a preset threshold;

[0018] When a preset threshold is reached, the gas valve is opened;

[0019] The airflow information during the opening of the air valve is recorded and sent to the processor.

[0020] Wherein, when the first preset condition is met, after controlling the gas valve to close, the method further includes:

[0021] The air pressure value in the sealed airway during the closing of the air valve is recorded and sent to the processor.

[0022] Wherein, the physiological parameters also include electrocardiogram information and blood pressure information, and the automatic detection method of the Valsalva test also includes:

[0023] Determine in real time based on the electrocardiogram information and the blood pressure information whether the direction information and the flow information in the same time axis are within a second preset condition that matches them;

[0024] When it is not within the second preset condition, an alarm message is sent to the processor.

[0025] On the other hand, the present application discloses a Valsalva test automatic detection system for upright tilt test, comprising:

[0026] A Valsalva test device: used to implement the automatic detection method of the Valsalva test according to any one of claims 1 to 7 above;

[0027] ECG acquisition module: used to collect the tester's ECG information during the upright tilt test;

[0028] Blood pressure collection module: used to collect the blood pressure information of the tester during the self-standing tilt test;

[0029] Upright tilt test bed control module: used to control the tilt angle of the self-standing tilt test bed;

[0030] The processor is electrically connected to the Valsalva test device, the ECG acquisition module, the blood pressure acquisition module and the upright tilt test bed control module to receive communication data from each device module, analyze and process the communication data, and send control information to each module.

[0031] On the other hand, the present application discloses a Valsalva test device, comprising an airway cavity, an air valve, a pressure sensor, a gas flow sensor, a breathing nozzle, a memory and a processor, wherein the breathing nozzle is connected to the airway cavity, the air valve, the pressure sensor and the gas flow sensor are all accommodated in the airway cavity, the memory and the processor are arranged outside the airway cavity, the processor is electrically connected to the memory, the air valve, the pressure sensor and the gas flow sensor, respectively, the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the processor executes the steps of the Valsalva test automatic detection method as described in any one of claims 1 to 7.

[0032] On the other hand, the present application discloses a storage medium storing computer-readable instructions, which, when executed by one or more processors, causes the one or more processors to perform any of the steps of the above-mentioned Valsalva test automatic detection method.

[0033] The beneficial effects of the embodiments of the present application are as follows: the technical solution of the present application, during the self-supporting tilt test, automatically performs a Valsalva respiration test according to the time axis according to the tilt state of the self-supporting tilt, and the data can be recorded synchronously with other detected physiological parameters, thereby making the test data more accurate. At the same time, during the Valsalva respiration test, the collected airflow signal values ​​are smoothed, and the opening or closing of the air valve in the Valsalva test device is automatically controlled according to the airflow value and direction information. The entire test process does not require manual operation, has a high degree of automation, and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0035] Figure 1 This is a schematic diagram of the structure of the Warburg test device for this application;

[0036] Figure 2 This is a first schematic diagram of the automatic detection method of the Valsalva test of the present application;

[0037] Figure 3The following is a schematic diagram of the smoothing process for this application:

[0038] Figure 4 This is a flow chart of the method for opening or closing the gas valve in this application;

[0039] Figure 5 This is a flow chart of the automatic detection method after the gas valve is closed in this application;

[0040] Figure 6 The second flow chart of the automatic detection method of the Valsalva test of this application;

[0041] Figure 7 This is the structure diagram of the automatic detection system for the Walsh test in this application. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0043] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0044] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0045] See also Figure 1The present embodiment discloses a Valsalva test device, which is connected to a self-standing tilt test bed to synchronously perform a Valsalva breathing test during an upright tilt test. The Valsalva test device of the present application includes an airway cavity 100, an air valve 200, a pressure sensor 300, a gas flow sensor 400, a breathing nozzle 500, a memory 700 and a processor 600, wherein the breathing nozzle 500 is in communication with the airway cavity 100, the air valve 200, the pressure sensor 300, and the gas flow sensor 400 are all accommodated in the airway cavity 100, the memory 700 and the processor 600 are arranged outside the airway cavity 100, the processor 600 is electrically connected to the memory 700, the air valve 200, the pressure sensor 300, and the gas flow sensor 400, respectively, and the memory 700 stores computer-readable instructions, and when the computer-readable instructions are executed by the processor 600, the processor 600 performs the steps of the automatic detection method of the Valsalva test.

[0046] In one embodiment, see Figure 2 The above disclosed automatic detection method of the Wasch test includes:

[0047] S10, acquiring physiological parameters of the test subject during the upright tilt test according to the time axis information and sending the parameters to the processor, wherein the physiological parameters include airflow information, and the airflow information includes direction information and flow information;

[0048] S20, smoothing the airflow information to obtain the airflow value at the current time point:

[0049] S30. Controlling the opening or closing of an air valve in the Valsalva test device according to the direction information and the airflow value, wherein the opening or closing state of the air valve corresponds to two or more breathing test states of the Valsalva test.

[0050] The entire Valsalva test is performed in conjunction with the upright tilt test process, and the upright tilt test is performed in steps at different angles, and the Valsalva respiration test is performed in conjunction with different tilt states or tilt processes, and the test data of the corresponding time axis is collected. For example, in one embodiment, the upright tilt bed can be tilted within the range of 90 degrees to -90 degrees. During the Valsalva test, the Valsalva respiration test can be performed in a lying state at 0 degrees, and then the bed can be gradually tilted to measure the Valsalva respiration test at an angle of 70 degrees in sequence, and then the bed can be tilted to perform the Valsalva respiration test at 90 degrees.

[0051] Since the upright tilting process occurs sequentially according to the time axis information, the corresponding Valsalva test data is also collected in coordination with the upright tilting process according to the time axis information to collect respiratory data sequentially, and the collected test data is synchronously transmitted to the processor electrically connected thereto for subsequent control.

[0052] During the above test, the gas flow sensor in the Valsalva test device collects the airflow information of the tester during the test. Since the human body's breathing process includes inhalation and exhalation, the airflow will have a certain direction and airflow size change with the inhalation and exhalation process. Therefore, the airflow information collected by the above gas flow sensor includes the direction information and flow information of the airflow.

[0053] Furthermore, since the airflow rate of a person's body changes continuously during inhalation and exhalation, the airflow rate data at each time point is different, so it is necessary to process the collected flow information to serve as the airflow value determined at a certain time point during the processor data processing process. For example, in one embodiment, a smoothing process can be used to obtain the airflow value at the current time point.

[0054] When the airflow value at the current time point is determined, the opening or closing of the air valve in the Valsalva test device is controlled in combination with the direction information of the gas collected by the gas flow sensor to control the opening or closing of the entire Valsalva test device, thereby realizing automatic Valsalva test. The opening or closing state of the air valve corresponds to two or more breathing test states of the Valsalva test. For example, during the Valsalva test, combined with the inhalation, exhalation and breath holding during the transition between inhalation and exhalation of normal human breathing, it can be divided into three breathing test states, namely, the inhalation state, the breathing state and the breath holding state. The relevant data measurement of the three states is realized by controlling the opening and closing of the air valve in the Valsalva test device.

[0055] In one embodiment, see Figure 3 , the smoothing of the airflow information to obtain the airflow value at the current time point includes:

[0056] S21, sequentially obtain the flow information of the current time point and the flow information of two or more adjacent time intervals;

[0057] S22: Taking a weighted average of the flow information at the current time point and the flow information at two or more adjacent time intervals to obtain the current point airflow value.

[0058] In one embodiment, a smoothing process is used to determine the airflow value at a certain moment. The smoothing process is to determine the final airflow value according to a certain rule through the flow information data of at least three consecutive adjacent moments, for example, by weighted average or directly by average value.

[0059] Specifically, suppose the traffic information at the current time point is X n , then the flow information at the previous first preset time period is X n-1, the flow information of the first two second preset time periods is X n-2 , and so on, the airflow value Y is obtained by weighted average n The formula is as follows:

[0060] Y n =(ax n +bX n-1 +cX n-2 +…nX1) / (a+b+c+…+n)

[0061] Among them, Y n It represents the final determined flow value at the current time point, a, b, c respectively represent the flow information at the current time point, the flow information of the previous first preset time period and the threshold of the flow information of the previous two first preset time periods. The threshold can be freely determined according to the situation. It can be a fixed threshold or a different threshold can be matched according to the tilt angle of the upright tilt test bed.

[0062] In another embodiment, when the airflow value Y is obtained by using the average value method n The formula is as follows:

[0063] Y n =(X n +X n-1 +X n-2 +…X1) / n

[0064] Among them, Y n It represents the final determined flow value at the current time point. The flow information values ​​at n moments are directly determined as the airflow value at the current moment by taking the average value.

[0065] The method of obtaining the airflow value in the present application is not limited to the above two methods, but can be any one of the methods. The first preset time period mentioned in the above two methods can be any time period matched according to the required parameter accuracy, such as within one second, or 0.5 seconds, 0.1 seconds, etc. The selected time period is not limited to the previous preset time period or the previous two preset time periods at the current time point, but can also be the current preset time period and the next preset time period, or other schemes, as long as the time points are adjacent and continuous.

[0066] In one embodiment, please refer to Figure 4 , controlling the opening or closing of the air valve in the Valsalva test device according to the direction information and the airflow value includes:

[0067] S31, identifying whether the airflow value at the current time point meets a first preset condition;

[0068] S32: When the first preset condition is met, the gas valve is controlled to close.

[0069] The Valsalva test device of the present application is combined with the upright tilt test for automatic monitoring. It can be opened or closed with the rotation position of the upright tilt needle bed, and in the open state, the air valve is periodically opened or closed with the breathing action to measure the air flow and pressure value in the airway.

[0070] Based on the above principle, the air valve needs to be opened or closed according to the preset conditions. In one embodiment, whether the air valve needs to be closed can be determined based on whether the airflow value at the current time point meets the first preset condition. The first preset condition here includes that the airflow value at the current time point is less than the preset decrease ratio of the airflow value at the previous second preset time period. The second preset time period here is a time interval preset according to the test parameters, for example, the second preset time period is 1 minute ago, or 30 seconds ago, or 1 second ago, etc., which can be any time period that meets the upright tilt needle test.

[0071] Compare the airflow value at the previous second preset time period with the airflow value at the current time point to determine whether the airflow value at the current time point has decreased. If it has decreased, determine whether the reduction ratio reaches the preset decrease ratio. When the preset decrease ratio is reached, the first preset condition is met, so that a closing signal is sent to close the air valve. Assuming that the airflow value at the current time point is B, the airflow value at the second preset time period is A, and P is the decrease ratio, when B < A*P, it means that the current airflow value decreases faster, which generally occurs at the end of inspiration. At this time, the air valve is closed, the airway cavity is sealed, and the Valsalva test enters the breath-holding stage.

[0072] In one embodiment, see Figure 5 When the first preset condition is met, after controlling the gas valve to close, the method further includes:

[0073] S33, identifying whether the closing time of the gas valve reaches a preset threshold;

[0074] S34, when the preset threshold is reached, the gas valve is opened;

[0075] S35, recording the airflow information during the opening of the air valve and sending it to the processor.

[0076] Since the normal breathing process of the human body is to exhale after inhalation, the Valsalva breathing test process includes the inhalation stage, the breath-holding stage and the exhalation stage. Therefore, the breath-holding stage is performed for a certain period of time after the end of the inhalation stage. After holding the breath for a period of time, the exhalation stage is performed. According to the breathing characteristics of the human body, the breath-holding time is limited. According to the characteristics of the human body, a preset threshold for the breath-holding time can be set. When the air valve closing time reaches the preset threshold, the air valve can be automatically opened. Furthermore, under special circumstances, the air valve can be opened manually according to the actual situation of the test, which is not limited here. When the air valve is opened and enters the exhalation stage, the airflow information during the period when the air valve is open continues to be recorded, and the relevant data is sent to the processor for subsequent processing.

[0077] When the test enters the breath-holding stage, the air pressure value in the sealed airway during the closing of the air valve is recorded and sent to the processor. Through the above test process, the processor can obtain the airflow information of the inhalation stage, the breath-holding stage and the exhalation stage according to the time axis.

[0078] In one embodiment, see Figure 6 The above physiological parameters also include electrocardiogram information and blood pressure information. The automatic detection method of the Valsalva test also includes:

[0079] S40, judging in real time based on the electrocardiogram information and the blood pressure information whether the direction information and the flow information in the same time axis are within a second preset condition that matches them;

[0080] S50: When it is not within the second preset condition, send an alarm message to the processor.

[0081] During the self-supporting tilt bed test, as the bed tilts, the human body is in different tilted positions, and its respiratory state, ECG state and blood pressure state will change. People with different physical fitness will have different change values, but the changes of a normal human body will be within a preset range, and usually the respiratory state, ECG filling and blood pressure state will be within a reasonable range, and there will be corresponding correlations between each other. This reasonable preset range and correlation relationship are set as the second preset condition. When the Valsalva test result and the ECG information and blood pressure information meet the second preset condition, it means that everything is normal. When it is not within the second preset condition range, the test data is abnormal. At this time, an alarm message can be sent to the processor, and the processor will process it according to the preset processing method.

[0082] In one embodiment, see Figure 7 The present application also discloses a Valsalva test automatic detection system for upright tilt test, comprising:

[0083] The Valsalva test device 10 is used to implement the above-mentioned Valsalva test automatic detection method;

[0084] ECG acquisition module 20: used to collect the ECG information of the tester during the upright tilt test;

[0085] Blood pressure collection module 30: used to collect the blood pressure information of the tester during the self-standing tilt test;

[0086] The upright tilt test bed control module 40 is used to control the tilt angle of the self-standing tilt test bed;

[0087] The processor 50 is electrically connected to the Valsalva test device 10, the ECG acquisition module 20, the blood pressure acquisition module 30 and the upright tilt test bed control module 40, respectively, to receive the communication data of each device module, analyze and process the communication data, and send control information to each module respectively. The processor 50 here can be the same as the processor 500, or it can be a different processor. If it is a different processor, the processor 50 here can be electrically connected to the processor 600 in the Valsalva test device to perform data transmission to realize the above-mentioned automatic detection of the Valsalva test.

[0088] The present invention also provides a storage medium storing computer-readable instructions, which, when executed by one or more processors, enables the one or more processors to execute the steps of the automatic detection method of the Valsalva test described in any of the above embodiments.

[0089] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the aforementioned storage medium can be a non-volatile storage medium such as a disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0090] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0091] The above descriptions are only some embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A Valsalva test automatic detection method, characterized in that: A Valsalva test apparatus for connection to an upright tilt test bed, comprising: Acquire physiological parameters of the tester during the head-up tilt test according to the timeline information and send them to the processor, wherein the physiological parameters include airflow information, and the airflow information includes direction information and flow information; Smoothing the airflow information to obtain an airflow value at a current time point; Controlling the opening or closing of a valve in the Valsalva test device according to the direction information and the airflow value, wherein the opening or closing state of the valve corresponds to two or more breathing test states of the Valsalva test; Controlling the opening or closing of the gas valve in the Valsalva test device according to the direction information and the airflow value includes: Identify whether the airflow value at the current time point meets a first preset condition; When a first preset condition is met, controlling the gas valve to close; The first preset condition includes a preset decrease ratio of the airflow value at the current time point being less than the airflow value at the previous second preset time period; When the first preset condition is met, after controlling the gas valve to close, the method further comprises: Determine whether to open the gas valve or manually open the gas valve according to the preset time, that is: Identify whether the closing time of the air valve reaches a preset threshold, where the preset threshold is a breath-holding time period set according to human body characteristics; When a preset threshold is reached, the gas valve is opened automatically or manually; The airflow information during the opening of the air valve is recorded and sent to the processor.

2. The automatic detection method of the Valsalva test according to claim 1, characterized in that: The smoothing of the airflow information to obtain the airflow value at the current time point includes: Sequentially obtain the flow information of the current time point and the flow information of two or more adjacent time intervals; The flow information at the current time point and the flow information at two or more adjacent time intervals are weighted averaged to obtain the airflow value at the current time point.

3. The automatic detection method of the Valsalva test according to claim 1, characterized in that: When the first preset condition is met, after controlling the gas valve to close, the method further comprises: The air pressure value in the sealed airway during the closing of the air valve is recorded and sent to the processor.

4. The automatic detection method of the Valsalva test according to claim 1, characterized in that: Physiological parameters also include electrocardiogram information and blood pressure information. The automatic detection method of the Valsalva test also includes: Determine in real time based on the electrocardiogram information and the blood pressure information whether the direction information and the flow information in the same time axis are within a second preset condition that matches them; When it is not within the second preset condition, an alarm message is sent to the processor.

5. A Valsalva test automatic detection system, characterized in that: For upright tilt testing, including: Valsalva test device: used to implement the automatic detection method of Valsalva test according to any one of claims 1 to 4 above; ECG acquisition module: used to collect the tester's ECG information during the upright tilt test; Blood pressure collection module: used to collect the tester's blood pressure information during the upright tilt test; Upright tilt test bed control module: used to control the tilt angle of the upright tilt test bed; The processor is electrically connected to the Valsalva test device, the ECG acquisition module, the blood pressure acquisition module and the upright tilt test bed control module to receive communication data from each device module, analyze and process the communication data, and send control information to each module.

6. A Valsalva test device, comprising an airway cavity, an air valve, a pressure sensor, a gas flow sensor, a breathing mouthpiece, a memory and a processor, wherein: The breathing mouthpiece is connected to the airway cavity, the air valve, pressure sensor, and gas flow sensor are all accommodated in the airway cavity, the memory and processor are arranged outside the airway cavity, and the processor is electrically connected to the memory, air valve, pressure sensor, and gas flow sensor respectively. Computer-readable instructions are stored in the memory. When the computer-readable instructions are executed by the processor, the processor executes the steps of the automatic detection method of the Valsalva test as described in any one of claims 1 to 4.

7. A storage medium storing computer-readable instructions, wherein when the computer-readable instructions are executed by one or more processors, the one or more processors are caused to perform the steps of the automatic detection method of the Valsalva test according to any one of claims 1 to 4.

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