An integrated follow-up support system for doctors, nurses and patients to prevent complications after TIPS surgery

Abstract

The present invention relates to the field of medical data processing technology, and specifically to an integrated medical-nursing-patient follow-up support system for preventing complications after TIPS surgery. The system comprises a data acquisition module, a complication risk expression degree acquisition module, and a risk warning module. The system is used to obtain the patient's normal blood ammonia level, heart rate, systolic blood pressure dispersion increase, average protein intake, and the postoperative stage to which they belong, obtain the patient's physical recovery degree at each follow-up time, and obtain a recovery state time series; obtain the patient's poor prognosis level, compensate for the poor prognosis level to obtain the patient's recovery risk coefficient; obtain the patient's physical sign risk coefficient, obtain the patient's complication risk expression degree, and provide an early warning of postoperative complication risks. The present invention aims to avoid the influence of the patient's recovery status and physical sign data when analyzing TIPS postoperative complications, thereby improving the accuracy of analyzing TIPS postoperative complications.

Description

Technical Field

[0001] The present invention relates to the technical field of medical data processing, and in particular to a doctor-nurse-patient integrated follow-up support system for preventing complications after TIPS surgery. Background Art

[0002] Transjugular intrahepatic portosystemic shunt (TIPS) is a minimally invasive interventional procedure that effectively relieves portal hypertension by establishing a direct channel between the portal vein and the hepatic vein within the liver. It is used to treat serious conditions such as refractory ascites and esophageal variceal bleeding caused by portal hypertension. However, due to significant changes in the physiological environment in the patient's body after TIPS surgery, a series of complications may occur.

[0003] For potential postoperative complications, traditional follow-up management methods rely too much on postoperative outpatient reviews, while patients have relatively weak self-management capabilities. Untimely or irregular follow-up often leads to delayed treatment of complications, affecting the efficacy of TIRS and even endangering their lives. Furthermore, traditional follow-up management methods assess patients' postoperative complication risk based on clinical guidelines and rely on static risk thresholds and isolated data to judge complication risk values. This approach is unable to adapt to the patient's dynamic pathological evolution after surgery, resulting in an increased missed diagnosis rate for acute phase symptoms such as bleeding and shock due to insufficient risk assessment sensitivity. Symptoms in stable phases of patients can be misdiagnosed due to low static risk thresholds, leading to over-medicalization when false positives occur. Traditional follow-up management methods lack temporal correlation analysis of vital sign parameters such as blood ammonia, making it difficult to capture early risk trends, resulting in delayed warnings of sudden complications and, in turn, delayed treatment. Summary of the Invention

[0004] The present invention provides a follow-up support system integrating doctors, nurses and patients for preventing complications after TIPS surgery, so as to solve the existing problems.

[0005] The integrated medical, nursing and patient follow-up support system for preventing TIPS postoperative complications of the present invention adopts the following technical solutions:

[0006] One embodiment of the present invention provides an integrated medical, nursing, and patient follow-up support system for preventing complications after TIPS surgery. The system includes the following modules:

[0007] The data acquisition module is used to obtain the patient's blood ammonia norm, heart rate, systolic blood pressure dispersion increase, average protein intake, and postoperative stage at each follow-up time; the last follow-up time is recorded as the current follow-up time;

[0008] A complication risk expression degree acquisition module is used to obtain the patient's physical recovery degree at each follow-up time using the normal blood ammonia level at each follow-up time; to construct a recovery state time series sequence using all physical recovery degrees after the follow-up time corresponding to the minimum physical recovery degree; to obtain the patient's poor prognosis degree using the discrete degree of the recovery state time series and the increase ratio of the physical recovery degree therein; to compensate for the poor prognosis degree using the time interval of all follow-up times and the average amount of protein consumed at the current follow-up time to obtain the patient's recovery risk coefficient; to obtain the patient's physical sign risk coefficient using the increase in systolic blood pressure dispersion at the current follow-up time and the increase in the patient's heart rate at all follow-up times in the postoperative stage to which the current follow-up time belongs; and to obtain the patient's complication risk expression degree by combining the patient's physical sign risk coefficient and the recovery risk coefficient.

[0009] The risk warning module is used to provide early warning of postoperative complication risks using the patient's complication risk performance during the postoperative stage of the current follow-up time.

[0010] Preferably, the method for obtaining the patient's blood ammonia norm, heart rate, systolic blood pressure dispersion increase, average protein intake, and postoperative stage at each follow-up time includes:

[0011] The inversely proportional normalized value of the absolute value of the difference between the patient's blood ammonia concentration at each follow-up time and the prior normal blood ammonia concentration was recorded as the patient's blood ammonia norm at each follow-up time;

[0012] The standard deviation of the systolic blood pressure at all times between the previous follow-up time and each follow-up time was recorded as the systolic blood pressure dispersion of the patient at each follow-up time; the difference between the systolic blood pressure dispersion of the patient at each follow-up time and the systolic blood pressure dispersion of the previous follow-up time was recorded as the systolic blood pressure dispersion increase of the patient at each follow-up time;

[0013] The mean of the estimated protein content of all foods consumed from the time of surgery to each follow-up time was recorded as the average amount of protein consumed by the patient at each follow-up time;

[0014] The time after the operation was divided into different postoperative stages, and the postoperative stage to which the patient belonged at each follow-up time was obtained.

[0015] Preferably, the specific steps of obtaining the body recovery degree include:

[0016] The follow-up time is linearly normalized based on all follow-up times to obtain the time weight of each follow-up time. The normal blood ammonia level at each follow-up time is weighted using the time weight to obtain the patient's physical recovery degree at each follow-up time; the physical recovery degree is positively proportional to the normal blood ammonia level and the time weight of each follow-up time.

[0017] Preferably, the specific steps of obtaining the recovery state time sequence include:

[0018] Obtain the patient's physical recovery degree at all follow-up times before the current follow-up time, take the follow-up time with the minimum physical recovery degree as the start recovery time, and record the time series consisting of the physical recovery degrees of all follow-up times between the start recovery time and the current follow-up time as the patient's recovery status time series.

[0019] Preferably, the specific steps of obtaining the poor prognosis degree include:

[0020] The variance of all body recovery degrees in the patient's recovery state time series is recorded as the discrete degree of the patient's recovery state time series;

[0021] The ratio of each body recovery degree to the previous body recovery degree in the patient's recovery state time series is recorded as the increase ratio of each body recovery degree in the patient's recovery state time series;

[0022] The poor prognosis degree of the patient is obtained, and the poor prognosis degree is directly proportional to the discrete degree of the recovery state time series and the increase ratio of the physical recovery degree therein.

[0023] Preferably, the specific steps of obtaining the recovery risk coefficient include:

[0024] Obtaining a sampling interval error, wherein the sampling interval error is in direct proportion to the time interval between all two adjacent follow-up times;

[0025] The patient's recovery risk coefficient is obtained by combining the sampling interval error and the average amount of protein consumed during the current follow-up time to compensate for the poor prognosis, wherein the sampling interval error and the average amount of protein consumed during the current follow-up time have an inversely proportional compensation effect on the patient's recovery risk coefficient.

[0026] Preferably, the specific steps of obtaining the sampling interval error include:

[0027] The normalized value of the positive proportion of the time interval between each follow-up time and the previous follow-up time is recorded as the interval error coefficient of each follow-up time; the mean of the interval error coefficients of all follow-up times is recorded as the sampling interval error.

[0028] Preferably, the specific steps of obtaining the physical sign risk coefficient include:

[0029] The set consisting of all follow-up times in the postoperative stage to which the current follow-up time belongs is recorded as the same-stage set;

[0030] In the same phase set, the difference between the heart rate at each follow-up time and the heart rate at the previous follow-up time was recorded as the heart rate increase at each follow-up time;

[0031] Obtain the prior tolerance range of the postoperative stage to which the current follow-up time belongs;

[0032] Comparing the systolic blood pressure dispersion increase at each follow-up time in the same stage set with the a priori tolerance range to obtain the patient's systolic blood pressure out-of-bounds coefficient;

[0033] The patient's physical sign risk coefficient is obtained by combining the systolic blood pressure exceeding threshold coefficient with the mean of the heart rate increase at all follow-up times in the same stage set; wherein the patient's physical sign risk coefficient is positively proportional to the systolic blood pressure exceeding threshold coefficient and the mean of the heart rate increase.

[0034] Preferably, the specific steps of obtaining the systolic blood pressure over-limit coefficient include:

[0035] The ratio of the mean of the systolic blood pressure dispersion increase at all follow-up times in the same stage set to the prior tolerance range is recorded as the patient's systolic blood pressure exceeding limit coefficient.

[0036] Preferably, the specific steps of obtaining the complication risk expression index include:

[0037] The patient's complication risk expression degree is obtained, wherein the patient's complication risk expression degree is positively proportional to the physical sign risk coefficient and the recovery risk coefficient.

[0038] The beneficial effects of the technical solution of the present invention are as follows: the present invention obtains the patient's normal blood ammonia level, heart rate, systolic blood pressure dispersion increase, average protein intake, and the postoperative stage to which they belong, and uses the follow-up time and normal blood ammonia level to obtain the body recovery level, which is used to reflect the patient's TIPS postoperative recovery at each follow-up time, and uses all body recovery levels after the follow-up time corresponding to the minimum body recovery level to form a recovery state time series; obtains the patient's poor prognosis, quantifies the patient's poor postoperative recovery, uses the time intervals of all follow-up times and the average protein intake at the current follow-up time to compensate for the poor prognosis, obtains the patient's recovery risk coefficient, and uses the patient's recovery risk coefficient to reflect the patient's The quality of recovery from surgery to the current follow-up time, that is, the risk of TIPS postoperative complications reflected by physical sign data; the patient's physical sign risk coefficient is obtained, and the possibility of postoperative bleeding in the patient is reflected by the increase in systolic blood pressure dispersion and heart rate increase. The TIPS postoperative complication risk shown in physical signs is combined with the patient's physical sign risk coefficient and recovery risk coefficient to obtain the patient's complication risk expression degree. The patient's complication risk expression degree is used to provide early warning of postoperative complication risks in the postoperative stage of the current follow-up time; the sensitivity of complication assessment in different postoperative stages is adjusted by the complication risk expression degree, so as to achieve the purpose of improving the accuracy of medical staff in judging TIPS postoperative complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a structural block diagram of the integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to the present invention. DETAILED DESCRIPTION

[0041] To further illustrate the technical means and effectiveness of the present invention in achieving its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effectiveness of the integrated medical, nursing, and patient follow-up support system for preventing TIPS postoperative complications proposed by the present invention. In the following description, references to different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0042] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0043] The specific scheme of the integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0044] See also Figure 1 , which shows a structural block diagram of a medical-nurse-patient integrated follow-up support system for preventing TIPS postoperative complications provided by one embodiment of the present invention. The system includes the following modules:

[0045] Data collection module 101: obtains the patient's blood ammonia norm, heart rate, systolic blood pressure dispersion increase, average protein intake, and postoperative stage at each follow-up time; and records the last follow-up time as the current follow-up time.

[0046] It should be noted that the purpose of this embodiment is to mine multiple vital sign data of patients, quantify the symptoms of patients in the follow-up records after surgery, obtain the complication risk expression degree, and then provide early warning of the patient's follow-up results based on the complication risk expression degree. Among them, the complications after TIPS surgery are mainly manifested in changes in blood ammonia levels and bleeding at different postoperative stages. Therefore, this embodiment first collects data such as the patient's blood ammonia, heart rate, systolic blood pressure, and protein intake.

[0047] It should be noted that, in this embodiment, the quantified content when quantifying the postoperative complications of TIPS mainly includes the patient manifestations as described above. If other embodiments are based on the above-mentioned patient manifestations, any modifications, equivalent replacements, improvements, etc. made within the principles of this embodiment shall have the same technical effects as those of this embodiment.

[0048] Specifically, building an integrated medical, nursing and patient follow-up support system for preventing TIPS postoperative complications requires constructing patient follow-up records by medical staff based on the hospital's database. Taking any patient as an example, the follow-up records of the patient at all follow-up times after surgery are obtained from the hospital's database. The follow-up records include the patient's blood ammonia concentration at each follow-up time, the heart rate at each follow-up time, the systolic blood pressure at all times between the previous follow-up time and each follow-up time, and the estimated protein content of all food consumed from the time of surgery to each follow-up time.

[0049] Furthermore, the inversely proportional normalized value of the absolute value of the difference between the patient's blood ammonia concentration at each follow-up time and the prior normal blood ammonia concentration was recorded as the patient's blood ammonia norm at each follow-up time;

[0050] The standard deviation of the systolic blood pressure at all times between the previous follow-up time and each follow-up time was recorded as the patient's systolic blood pressure dispersion at each follow-up time; the difference between the patient's systolic blood pressure dispersion at each follow-up time and the systolic blood pressure dispersion at the previous follow-up time was recorded as the patient's systolic blood pressure dispersion increase at each follow-up time; among which, the systolic blood pressure dispersion increase at the first follow-up time was recorded as 0;

[0051] It should be noted that the systolic blood pressure at all the above moments is obtained through a wearable device installed on the patient's body, where the systolic blood pressure of the patient is recorded once per second; as an example, this embodiment uses a wearable cuff blood pressure monitor to monitor the patient's systolic blood pressure at all times.

[0052] The mean of the estimated protein content of all foods consumed from the time of surgery to each follow-up time was recorded as the mean protein intake of the patient at each follow-up time.

[0053] It should be noted that when medical staff follow up on patients, the time intervals between different follow-up times are different due to different follow-up intervals.

[0054] Furthermore, the clinical guidelines for TIPS surgery divide the time after the surgery into different postoperative stages, including the acute stage, the subacute stage, and the stable stage. The clinical guidelines are existing specifications. Since all analysis steps in this embodiment are performed after the TIPS surgery, this embodiment uses the surgery time as the zero point of the follow-up time. As an example, the period within 24 hours after surgery is considered the acute stage, the period from 24 hours to 7 days after surgery is considered the subacute stage, and the period more than 7 days after surgery is considered the stable stage.

[0055] Furthermore, according to the follow-up time corresponding to the above different postoperative stages, the postoperative stage to which the patient belongs at each follow-up time is obtained.

[0056] At this point, the normal blood ammonia level, heart rate, systolic blood pressure dispersion increase, and postoperative stage of the patient at each follow-up time were obtained, and the average amount of protein consumed at each follow-up time was obtained.

[0057] Complication risk expression degree acquisition module 102:

[0058] It should be noted that there are different risk thresholds in each postoperative stage. However, when the same static risk threshold is used to perform risk assessment for all follow-up visits in the same postoperative stage, it is often interfered with by the patient's recovery status and different patient physical signs. Therefore, this embodiment analyzes the manifestation of the patient's TIPS postoperative complications to obtain the complication risk manifestation degree, and then adjusts the risk threshold of the postoperative stage to provide early warning of the patient's postoperative complication risk based on the patient's complication risk value.

[0059] The specific steps for obtaining the complication risk expression degree include: using the normal blood ammonia level at each follow-up time to obtain the patient's physical recovery degree at each follow-up time; using all physical recovery degrees after the follow-up time corresponding to the minimum physical recovery degree to form a recovery state time series sequence; using the discrete degree of the recovery state time series and the increase ratio of the physical recovery degree therein to obtain the patient's poor prognosis degree; using the time interval of all follow-up times and the average amount of protein consumed at the current follow-up time to compensate for the poor prognosis degree to obtain the patient's recovery risk coefficient; using the increase in systolic blood pressure dispersion at the current follow-up time and the increase in the patient's heart rate at all follow-up times in the postoperative stage to which the current follow-up time belongs to obtain the patient's physical sign risk coefficient; and combining the patient's physical sign risk coefficient and the recovery risk coefficient to obtain the patient's complication risk expression degree.

[0060] (1) Obtain the patient's physical recovery degree at each follow-up time.

[0061] It should be noted that after TIPS surgery, the patient's blood ammonia concentration will rise in a short period of time due to changes in the liver environment, and will return to the normal range after a period of time. The smaller the deviation between the blood ammonia concentration and the normal range and the longer the interval between the follow-up time and the surgery time, the better the patient's recovery.

[0062] Preferably, the follow-up time is linearly normalized based on all follow-up times to obtain a time weight for each follow-up time, and the normal blood ammonia level at each follow-up time is weighted using the time weight to obtain the patient's physical recovery degree at each follow-up time; the physical recovery degree is positively proportional to the normal blood ammonia level and the time weight for each follow-up time;

[0063] The linear normalization result of the follow-up time described in this embodiment is obtained by a maximum-minimum normalization algorithm, which is a known technology.

[0064] (2) All physical recovery degrees after the follow-up time corresponding to the minimum physical recovery degree are used to form a time series of recovery status.

[0065] It should be noted that since the postoperative recovery status and complication risks of patients vary from individual to individual, it is necessary to obtain the follow-up time of the patient's postoperative recovery status to evaluate the patient's complication manifestations based on the changing trend of the physical recovery degree. However, after the TIPS surgery, the patient's blood ammonia concentration will rise in a short period of time due to changes in the liver environment, resulting in a downward trend in the physical recovery degree calculated at the first few follow-up times. These decreased physical recovery degrees cannot reflect the patient's recovery status. Therefore, this embodiment screens all follow-up times according to their changing trends to obtain a recovery status time series.

[0066] Preferably, the specific steps of using all physical recovery degrees after the follow-up time corresponding to the minimum physical recovery degree to form a recovery state time series include:

[0067] Obtain the patient's physical recovery degree at all follow-up times before the current follow-up time, take the follow-up time with the minimum physical recovery degree as the start recovery time, and record the time series consisting of the physical recovery degrees at all follow-up times between the start recovery time and the current follow-up time as the patient's recovery state time series;

[0068] It should be noted that if a patient has multiple identical minimum follow-up times, the earliest follow-up time will be recorded as the start of recovery time.

[0069] (3) Obtain the degree of poor prognosis of the patient.

[0070] It should be noted that the blood ammonia content of patients gradually stabilizes during the recovery process after TIPS surgery. Therefore, the value of normal blood ammonia converges with the follow-up time, and it shows a gradual increase and stability in the patient's recovery status time series. If the patient's recovery status time series shows a gradual increase and decrease disorder and distribution, the patient's prognosis is poor.

[0071] Preferably, in one embodiment of the present invention, the specific method of obtaining the poor prognosis of the patient is:

[0072] The variance of all body recovery degrees in the patient's recovery state time series is recorded as the discrete degree of the patient's recovery state time series;

[0073] The ratio of each body recovery degree to the previous body recovery degree in the patient's recovery state time series is recorded as the increase ratio of each body recovery degree in the patient's recovery state time series;

[0074] It should be noted that the increase ratio of the first body recovery degree in the recovery state time series is recorded as 1.

[0075] Obtaining a poor prognosis of the patient, wherein the poor prognosis is positively correlated with the degree of dispersion of the recovery state time series and the increase ratio of the physical recovery degree therein;

[0076] As an example, in this embodiment, the product of the discrete degree of the patient's recovery state time series and the average of the increase ratios of all body recovery degrees in the patient's recovery state time series is recorded as the patient's poor prognosis.

[0077] (4) The time intervals of all follow-up times and the average amount of protein consumed at the current follow-up time are used to compensate for the poor prognosis and obtain the patient's recovery risk coefficient.

[0078] Preferably, in one embodiment of the present invention, the specific steps included in this step are:

[0079] Obtaining a sampling interval error, wherein the sampling interval error is in direct proportion to the time interval between all two adjacent follow-up times;

[0080] The poor prognosis is compensated by using all sampling interval errors and the average amount of protein consumed at the current follow-up time to obtain the patient's recovery risk coefficient.

[0081] As an example, the specific method for obtaining the sampling interval error is:

[0082] It should be noted that since TIPS postoperative follow-up is an on-demand follow-up by medical staff, the time of adjacent follow-up visits is different. Therefore, the longer the interval between follow-up visits, the lower the reference value for comparison between two adjacent follow-up visits, which means that the higher the error when used to analyze the condition.

[0083] Specifically, the normalized value of the positive ratio of the time interval between each follow-up time and the previous follow-up time is recorded as the interval error coefficient of each follow-up time; the mean of the interval error coefficients of all follow-up times is recorded as the sampling interval error;

[0084] It should be noted that the previous follow-up time of the first follow-up time is the operation time, wherein the proportional normalization value is obtained by the maximum and minimum value normalization algorithm, which is a well-known technology and will not be described in detail in this embodiment.

[0085] As an example, the specific method for compensating the poor prognosis by using all sampling interval errors and the average amount of protein consumed at the current follow-up time to obtain the patient's recovery risk coefficient is:

[0086] It should be noted that patients need to consume a certain amount of energy for physical recovery after TIPS surgery, which includes protein. However, the decomposition of protein in the intestine will produce a large amount of ammonia. Patients with impaired liver function have difficulty metabolizing ammonia, which in turn increases the blood ammonia concentration, resulting in errors in judging the risk of postoperative complications by blood ammonia concentration. Therefore, it is necessary to compensate for the poor prognosis by the amount of protein consumed before the current follow-up time to obtain the patient's recovery risk coefficient.

[0087] Specifically, the patient's recovery risk coefficient is obtained by combining the sampling interval error and the average amount of protein consumed during the current follow-up time to compensate for the poor prognosis, wherein the sampling interval error and the average amount of protein consumed during the current follow-up time have an inversely proportional compensation effect on the patient's recovery risk coefficient;

[0088] As an example of obtaining a patient's recovery risk coefficient, the product of the sampling interval error and the average amount of protein consumed at the current follow-up time is normalized using an inverse normalization function to obtain a compensation coefficient, and the product of the compensation coefficient and the degree of poor prognosis is recorded as the patient's recovery risk coefficient, wherein the inverse normalization function described in this embodiment is implemented using an exponential function with a natural constant as the base.

[0089] (5) Obtain the patient's physical sign risk factor.

[0090] It should be noted that the above analysis is of the symptoms related to TIPS surgery. However, in addition to these symptoms, there are also changes in physical sign data caused by the surgery. Among them, the most obvious is postoperative bleeding. When a patient has postoperative bleeding, the systolic blood pressure will fluctuate greatly. In addition, since the patient's heart rate will increase after the blood pressure is lowered, that is, the heart rate increase rate changes. Therefore, the greater the patient's heart rate increase and the greater the systolic blood pressure fluctuation, the higher the risk reflected by the patient's physical sign data.

[0091] Preferably, in one embodiment of the present invention, the specific steps included in this step are:

[0092] The set consisting of all follow-up times in the postoperative stage to which the current follow-up time belongs is recorded as the same-stage set;

[0093] In the same phase set, the difference between the heart rate at each follow-up time and the heart rate at the previous follow-up time was recorded as the heart rate increase at each follow-up time;

[0094] The patient's physical sign risk coefficient was obtained based on the heart rate increase and systolic blood pressure dispersion increase at each follow-up time in the same stage collection.

[0095] As an example, based on the heart rate increase and systolic blood pressure dispersion increase at each follow-up time in the same stage set, the specific method for obtaining the patient's physical sign risk coefficient is as follows:

[0096] The clinical guidelines for TIPS surgery were used to obtain the a priori tolerance range of the postoperative period to which the current follow-up time belonged;

[0097] Comparing the systolic blood pressure dispersion increase at each follow-up time in the same stage set with the a priori tolerance range to obtain the patient's systolic blood pressure out-of-bounds coefficient;

[0098] As an example, the systolic blood pressure exceeding threshold coefficient is obtained by taking the ratio of the mean of the systolic blood pressure dispersion increase of all follow-up times in the same stage set to the prior tolerance range as the patient's systolic blood pressure exceeding threshold coefficient;

[0099] The patient's physical sign risk coefficient is obtained by combining the systolic blood pressure exceeding threshold coefficient and the average of the heart rate increase at all follow-up times in the same stage set; wherein, the patient's physical sign risk coefficient is positively proportional to the systolic blood pressure exceeding threshold coefficient and the average of the heart rate increase; as an example, the product of the systolic blood pressure exceeding threshold coefficient and the average of the heart rate increase at all follow-up times in the same stage set is normalized by a linear normalization function, and the result is recorded as the patient's physical sign risk coefficient.

[0100] It should be noted that the patient's systolic blood pressure over-limit coefficient is distributed on both sides of 1. When it is greater than 1, it indicates that the systolic blood pressure exceeds the tolerance range of the postoperative stage to which the current follow-up time belongs. The larger the patient's systolic blood pressure over-limit coefficient, the more severe the bleeding manifestations in the patient's physical sign data. Conversely, when it is less than 1, it indicates that the systolic blood pressure is within the tolerance range of the postoperative stage to which the current follow-up time belongs, and is normal.

[0101] (6) The patient's complication risk index and recovery risk index are combined to obtain the patient's complication risk performance.

[0102] It should be noted that the patient's complication risk value can be obtained by using clinical guidelines in each postoperative stage after TIPS surgery, and the risk threshold corresponding to each stage can be used for judgment, thereby achieving early warning of the risk of postoperative complications. In this embodiment, the patient's physical sign risk coefficient and recovery risk coefficient are obtained after the above analysis, which respectively show the patient's physical sign status and recovery status after surgery, and then the patient's complication risk degree is obtained based on the two. Modification of the risk threshold can effectively avoid missed diagnosis and misdiagnosis caused by different physical signs and recovery conditions of patients.

[0103] Specifically, the patient's complication risk expression degree is obtained, wherein the patient's complication risk expression degree is positively proportional to the physical sign risk coefficient and the recovery risk coefficient; as an example, the result obtained by linearly normalizing the product of the patient's physical sign risk coefficient and the recovery risk coefficient is recorded as the patient's complication risk expression degree.

[0104] Risk warning module 103: Use the patient's complication risk performance level to provide early warning of postoperative complication risks during the postoperative period of the current follow-up time.

[0105] It should be noted that after obtaining the patient's complication risk expression, when the patient's complication risk expression is higher, it indicates that the patient has a certain complication risk based on recovery status and physical sign data. Therefore, it is necessary to adjust the risk threshold accordingly based on the complication risk expression so that the adjusted risk threshold is more in line with the patient's actual situation.

[0106] Specifically, the clinical guidelines for TIPS surgery were used to obtain the a priori risk threshold for the postoperative period to which the current follow-up time belonged;

[0107] The prior risk threshold of the postoperative stage to which the current follow-up time belongs is adjusted according to the patient's complication risk expression level to obtain the adjusted risk threshold of the postoperative stage to which the current follow-up time belongs; the adjusted risk threshold is inversely proportional to the complication risk expression level. As an example, the product of the difference between 1 and the patient's complication risk expression level and the prior risk threshold of the postoperative stage to which the current follow-up time belongs is recorded as the adjusted risk threshold of the postoperative stage to which the current follow-up time belongs.

[0108] Furthermore, the patient's complication risk was assessed using the clinical guidelines for TIPS surgery to obtain the patient's complication risk value at the current follow-up time;

[0109] An early warning method for the patient's complication risk is performed based on the complication risk value and the adjusted risk threshold. As an example, the early warning method described in this embodiment is:

[0110] If the patient's complication risk value at the current follow-up time is less than or equal to the adjusted risk threshold, no warning will be issued to the patient;

[0111] When the patient's complication risk value at the current follow-up time is greater than the adjusted risk threshold but less than or equal to 1.5 times the adjusted risk, the patient will be sent to the nurse station for monitoring by a nurse;

[0112] When the patient's complication risk value at the current follow-up time is greater than 1.5 times the adjusted risk threshold, the patient will be sent to the attending physician and the postoperative intervention process will be forcibly initiated.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated follow-up support system for doctors, nurses and patients to prevent complications after TIPS surgery, characterized by: The system includes the following modules: The data acquisition module is used to obtain the patient's blood ammonia norm, heart rate, systolic blood pressure dispersion increase, average protein intake, and postoperative stage at each follow-up time; The last follow-up time was recorded as the current follow-up time; The complication risk manifestation degree acquisition module is used to obtain the patient's physical recovery degree at each follow-up time using the normal blood ammonia level at each follow-up time; to construct a recovery state time series using all physical recovery degrees after the follow-up time corresponding to the minimum physical recovery degree; to obtain the patient's poor prognosis using the discrete degree of the recovery state time series and the increase ratio of the physical recovery degree therein; and to compensate for the poor prognosis using the time interval of all follow-up times and the average amount of protein consumed at the current follow-up time to obtain the patient's recovery risk coefficient. The patient's physical sign risk coefficient is obtained using the increase in systolic blood pressure dispersion at the current follow-up time and the increase in heart rate at all follow-up times within the postoperative period to which the current follow-up time belongs; The patient's complication risk index and recovery risk index are combined to obtain the patient's complication risk performance; The specific steps of obtaining the recovery risk coefficient include: Obtaining a sampling interval error, wherein the sampling interval error is in direct proportion to the time interval between all two adjacent follow-up times; The patient's recovery risk coefficient is obtained by combining the sampling interval error and the average amount of protein consumed during the current follow-up time to compensate for the poor prognosis, wherein the sampling interval error and the average amount of protein consumed during the current follow-up time have an inversely proportional compensation effect on the patient's recovery risk coefficient; The specific steps for obtaining the physical sign risk coefficient include: The set consisting of all follow-up times in the postoperative stage to which the current follow-up time belongs is recorded as the same-stage set; In the same phase set, the difference between the heart rate at each follow-up time and the heart rate at the previous follow-up time was recorded as the heart rate increase at each follow-up time; Obtain the prior tolerance range of the postoperative stage to which the current follow-up time belongs; Comparing the systolic blood pressure dispersion increase at each follow-up time in the same stage set with the a priori tolerance range to obtain the patient's systolic blood pressure out-of-bounds coefficient; The patient's physical sign risk coefficient is obtained by combining the systolic blood pressure exceeding threshold coefficient with the average of the heart rate increase at all follow-up times in the same stage set; wherein the patient's physical sign risk coefficient is positively proportional to the systolic blood pressure exceeding threshold coefficient and the average of the heart rate increase; The risk warning module is used to provide early warning of postoperative complication risks using the patient's complication risk performance during the postoperative stage of the current follow-up time.

2. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The method for obtaining the patient's blood ammonia norm, heart rate, systolic blood pressure dispersion increase, average protein intake, and postoperative stage at each follow-up time includes: The inversely proportional normalized value of the absolute value of the difference between the patient's blood ammonia concentration at each follow-up time and the prior normal blood ammonia concentration was recorded as the patient's blood ammonia norm at each follow-up time; The standard deviation of the systolic blood pressure at all times between the previous follow-up time and each follow-up time was recorded as the systolic blood pressure dispersion of the patient at each follow-up time; the difference between the systolic blood pressure dispersion of the patient at each follow-up time and the systolic blood pressure dispersion of the previous follow-up time was recorded as the systolic blood pressure dispersion increase of the patient at each follow-up time; The mean of the estimated protein content of all foods consumed from the time of surgery to each follow-up time was recorded as the average amount of protein consumed by the patient at each follow-up time; The time after the operation was divided into different postoperative stages, and the postoperative stage to which the patient belonged at each follow-up time was obtained.

3. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps for obtaining the physical recovery degree include: The follow-up time is linearly normalized based on all follow-up times to obtain the time weight of each follow-up time. The normal blood ammonia level at each follow-up time is weighted using the time weight to obtain the patient's physical recovery degree at each follow-up time; the physical recovery degree is positively proportional to the normal blood ammonia level and the time weight of each follow-up time.

4. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps of obtaining the recovery state timing sequence include: Obtain the patient's physical recovery degree at all follow-up times before the current follow-up time, take the follow-up time with the minimum physical recovery degree as the start recovery time, and record the time series consisting of the physical recovery degrees of all follow-up times between the start recovery time and the current follow-up time as the patient's recovery status time series.

5. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps for obtaining the poor prognosis degree include: The variance of all body recovery degrees in the patient's recovery state time series is recorded as the discrete degree of the patient's recovery state time series; The ratio of each body recovery degree to the previous body recovery degree in the patient's recovery state time series is recorded as the increase ratio of each body recovery degree in the patient's recovery state time series; The poor prognosis degree of the patient is obtained, and the poor prognosis degree is directly proportional to the discrete degree of the recovery state time series and the increase ratio of the physical recovery degree therein.

6. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps of obtaining the sampling interval error include: The normalized value of the positive proportion of the time interval between each follow-up time and the previous follow-up time is recorded as the interval error coefficient of each follow-up time; the mean of the interval error coefficients of all follow-up times is recorded as the sampling interval error.

7. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps of obtaining the systolic blood pressure exceeding threshold coefficient include: The ratio of the mean of the systolic blood pressure dispersion increase at all follow-up times in the same stage set to the prior tolerance range is recorded as the patient's systolic blood pressure exceeding limit coefficient.

8. The integrated medical-nursing-patient follow-up support system for preventing TIPS postoperative complications according to claim 1, characterized in that: The specific steps for obtaining the complication risk expression level include: The patient's complication risk expression degree is obtained, wherein the patient's complication risk expression degree is positively proportional to the physical sign risk coefficient and the recovery risk coefficient.

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