Cuff-free noninvasive long-time continuous blood pressure monitoring method

Abstract

The invention belongs to the technical field of biomedical engineering and relates to a cuff-free noninvasive long-time continuous blood pressure monitoring method. The method includes: acquiring physiological and pathological characteristic parameters through an electrocardiosignal and photoplethysmography signal monitoring subsystem connected with a computer; subjecting the parameters to seamless fusion and processing analysis through a blood pressure noninvasive dynamic monitoring model cluster and a blood pressure dynamic long-time monitoring software subsystem to obtain a blood pressure value of each heart beat and realize dynamic long-time continuous blood pressure monitoring. Starting from cuff-free blood pressure measurement, the blood pressure noninvasive dynamic monitoring modelcluster is constructed according to the patient's physiological and pathological characteristic parameters monitored by the signal monitoring subsystem on the basis of a patient individual difference-characteristic parameter average influence value-machine learning method, and accordingly a model self-correction function of the system in blood pressure long-time continuous measurement is achieved.By adoption of the method, monitoring precision and stability in blood pressure long-time measurement are improved, and continuous beats or long-time measurement of the blood pressure are realized, so that an effective foundation can be laid for hypertension prevention and treatment.

Description

technical field [0001] The invention belongs to the field of biomedical engineering and relates to a cuffless long-term continuous blood pressure non-invasive monitoring method. Background technique [0002] Today, the incidence of hypertension is increasing, which seriously endangers human health. A large number of epidemiological and clinical evidences show that long-term hypertension will increase the incidence of ischemic heart disease, stroke, renal failure, aortic and Risk of target organ damage such as peripheral arterial disease. Hypertension is a chronic disease, most of which require long-term life-long care. The effectiveness of lifestyle control in hypertensive patients, the efficacy of antihypertensive drugs, and the efficacy of interventional therapy for hypertension require long-term dynamic monitoring of blood pressure. Existing studies have shown that the significance of the variability of stroke blood pressure in judging hypertension is also attracting mor...

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Problems solved by technology

[0005] To sum up, although the method of continuous non-invasive blood pressure monitoring has made great progress, there are still the following problems: (1) Different methods lack universality in clinical application, and must be applied under certain conditions, within a certain range and within a certain period of time. Basic accuracy requirements; (2) Different literatures use different characteristic information of physiological signals such as pulse waves as the input of blood pressure prediction models, but the results obtained are inconsistent or even opposite, thus limiting the application of these methods; (3) Most studies only use One or several characteristic information of physiological signals such as pulse wave are used as the input of the blood pressure prediction model, and the overall characteristics of the pulse wave and other physiological signal waveforms of each heartbeat beat are a comprehensive reflection of the human circulatory system and hemodynamic characteristics. (4) The current methods and equipment focus more on the single-point or short-term measurement of blood pressure, and in the process, multiple or even continuous calibrations are required, which limits its application, let alone long-term or short-term measurement. Ambulatory non-invasive blood pressure monitoring

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