Method for continuous blood pressure measurement based on multi-parameter combination

Abstract

The invention provides a method for continuous blood pressure measurement based on multi-parameter combination. Besides blood pressure calibration based on pulse wave transmission time, the method also comprehensively considers a maximum value a01 of a first-order derivative of a blood oxygen volume wave which stays in the same cycle with an electrocardio-signals, a time difference a2 between two systole peak points in two adjacent periods, a time different a3 of two minimum points, a time different a4 of two diastole peak points, a difference a5 of two dicrotic notch points, an amplitude a6 of systole peak points, an amplitude a7 of the minimum point, an amplitude a8 of diastole peak points, an amplitude a9 of dicrotic notch pints, a systole area a10, a diastole area a11, an area a12 of the blood oxygen volume waves, an area ratio a13, a difference a14 of two peak points in the same cycle, a difference a15 between the systole peak point and the minimum point in the same cycle, rise time a16, a time increment a17, an increment coefficient a18, and a reflection coefficient a19. A blood pressure model can be established by a BP neural network according to the 18 parameters. A blood pressure can be predicted according to the model.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a multi-parameter fusion continuous blood pressure measurement method based on pulse wave transit time. Background technique [0002] With the rapid development of social economy, people pay more and more attention to health status; especially with the growth of aging population, convenient and easy-to-use health monitoring equipment has become an urgent demand of the society. Blood pressure is an important parameter reflecting the function of the human circulatory system. It refers to the lateral pressure of blood on the vessel wall per unit area caused by the pumping activity of the heart, which changes continuously and periodically with each cardiac cycle. Designing a continuous blood pressure measurement method to understand the diurnal variation of blood pressure is not only necessary for the prevention, diagnosis, treatment and control of hypertension, but also plays an impor...

AI Technical Summary

Problems solved by technology

[0004] Since blood pressure is the result of multiple factors, the relationship between pulse wave transit time and blood pressure can only be used to deduce the blood pressure value, and an accurate blood pressure value cannot be obtained.

Images