Method for evaluating cardiac function by using pulse waves

Abstract

A method for evaluating a cardiac function by using pulse waves includes the following steps: (1) acquiring a finger tip photoelectric capacity pulse wave signal through a photoelectric capacity sensor; (2) amplifying and filtering the finger tip photoelectric capacity pulse wave signal; (3) separating alternating quantity; (4) performing analog-to-digital conversion on the alternating quantity, and performing re-sampling on the converted digital signal to acquire a pulse waveform; (5) determining the pulse rate PR by using feature points of the pulse waveform; (6) segmenting the signal by using ascending ramus start point of the pulse waveform, acquiring waveform feature parameters for reflecting the human body cardiovascular resistance and a microvessel microcirculation state, and acquiring parameters including the cardiac output, the cardiac index, the stroke volume, and the stroke index which can reflect the cardiac function. The method can acquire the pulse wave signal of a human body through photoelectric capacity pulse waves, can evaluate the cardiac function through the pulse waves without drawing blood, can avoid injure, is high in adaptability, is simple in detection, is high in efficiency, and can accurately reflect the health condition of the cardiac function.

Description

technical field [0001] The invention relates to a method for evaluating cardiac function, in particular to a method for evaluating cardiac function using a non-invasive and non-destructive detection means, and belongs to the technical field of cardiac function evaluation. Background technique [0002] Cardiac function disease is a serious disease that threatens human life and health. Due to its multiple and frequent occurrence, if the cardiac function parameters can be detected and analyzed during the pre-onset diagnosis or post-onset treatment, the cardiac function can be predicted. The possibility of disease occurrence, or scientific and reasonable guidance in clinical treatment after the onset, will undoubtedly be of great significance to the protection of the lives and health of the broad masses of the people and the development of my country's medical care. [0003] Cardiac function parameters mainly refer to heart rate HR, cardiac output SV, cardiac output CO, cardiac i...

AI Technical Summary

Problems solved by technology

This creates a new problem. There are many patients in the hospital, and the sensors that need to be worn are many and complicated. For example, the heart sound signal is relatively high. Greatly reduces the speed and efficiency of detection

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