System and method for tracking cardiac cycle event by using blood pressure

Abstract

The invention relates to a system for tracking a cardiac cycle event by using blood pressure. The system comprises a pressure measuring device and a host, wherein the pressure measuring device is configured to measure the pressure close to the proximal side in a blood vessel and the pressure far away from the proximal side in the blood vessel respectively and generate a first pressure signal and asecond pressure signal; the host is connected with the pressure measuring device and receives the first pressure signal and the second pressure signal; the host distinguishes various cardiac cycles based on the first pressure signal and the second pressure signal, calculates the ratio of the pressure value of the second pressure signal to the pressure value of the first pressure signal corresponding to the pressure value of the second pressure signal to obtain a pressure ratio value and generates a target pressure waveform; the host acquires a target derivative waveform based on the target pressure waveform, and determines a target period in any cardiac cycle based on the target derivative waveform, and thus, an average value of the corresponding pressure ratio value in the target periodis obtained; and the target period is a period in which the derivative value of the target derivative waveform in the cardiac cycle changes within a preset numerical range.

Description

technical field [0001] The present disclosure specifically relates to systems and methods for tracking cardiac cycle events using blood pressure. Background technique [0002] Coronary artery disease is one of the leading causes of death worldwide, and the ability to better diagnose, monitor, and treat coronary artery disease can save lives. Coronary angiography is a technique routinely used to evaluate coronary artery stenosis, but coronary angiography cannot reflect the real situation of coronary vascular function, so it is basically impossible to clarify whether the coronary artery stenosis is related to the patient's myocardial ischemia, symptoms relevant. At present, the clinical method for judging coronary artery stenosis is mainly the technique of Fractional Flow Reserve (FFR) obtained by pressure guidewire examination. [0003] However, there are following defects in the process of obtaining FFR: before measuring FFR, it is necessary to inject maximum hyperemia-ind...

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Problems solved by technology

[0003] However, there are following defects in the process of obtaining FFR: before measuring FFR, it is necessary to inject maximum hyperemia-inducing drugs (such as adenosine, adenosine triphosphate, ATP) into the coronary arteries, so that the coronary arteries are in the maximum hyperemia state, and this process will increase the clinical operation time. While bringing incompatibility to patients, it will greatly increase medical expenses, and it will also cause allergic reactions in patients

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