Continuous non-invasive blood pressure monitoring method and device

Abstract

The invention relates to a continuous non-invasive blood pressure monitoring method and device. The method comprises the steps: acquiring an initial upper arm blood pressure value through a blood pressure measuring instrument, and then executing a blood pressure waveform fitting step: S21, adjusting a fingerstall pressure value according to the upper arm average pressure so that the fingerstall pressure value can be equal to the upper arm average pressure, and collecting a fingerstall pressure signal and a photoelectric volume pulse signal of a set part in real time; S22, obtaining a blood pressure fitting waveform according to the upper arm blood pressure value, the fingerstall pressure signal and the photoelectric volume pulse signal; S3, predicting an upper arm blood pressure value by adopting a blood pressure prediction model according to the photoelectric volume pulse signal in the S2; returning to S2, and determining the blood pressure fitting waveform according to the predicted upper arm blood pressure value. The fingerstall pressure signal and the photoelectric volume pulse signal are collected in real time, blood pressure prediction is carried out through the blood pressure prediction model, and continuous, non-invasive and accurate blood pressure monitoring can be achieved.

Description

technical field [0001] The invention relates to the technical field of biological signal detection, in particular to a continuous non-invasive blood pressure monitoring method and device. Background technique [0002] Hypertension is one of the most important predictors of cardiovascular disease, one of the leading causes of death worldwide. The risk of cardiovascular disease doubles for every 20 / 10 mmHg of systolic to diastolic ratio. Ambulatory blood pressure monitoring has been repeatedly shown to be a better predictor of cardiovascular status and mortality than a single batch of intermittent blood pressure. Continuous arterial blood pressure is essential to monitor hemodynamic stability in critically ill patients including shock and severe peripheral vasoconstriction or in patients undergoing or about to undergo major surgery. [0003] Arterial catheter arterial blood pressure is widely used by clinicians because of its timeliness and accuracy, and is currently the "go...

AI Technical Summary

Problems solved by technology

However, the invasive approach causes pain and potential complications for the patient; intermittent blood pressure measurement loses continuous hemodynamic information

However, many non-invasive continuous blood pressure monitoring methods currently exist, such as: applanation intraocular pressure technology, pulse wave transit time, pulse wave velocity, etc., all have the disadvantages of being easily affected, requiring frequent calibration, and low accuracy.

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