Correction method of pulse wave propagation time for arterial blood pressure

摘要

The present invention relates to pulse waves related to diastolic blood pressure and systolic blood pressure that can self-adaptively correct variations in pulse wave transit time caused by causes such as blood transfusions / fluids, vasoactive drugs, and surgical intervention in clinical conditions. A method for correcting propagation time is provided. The present invention detects an ear pulse wave and a toe pulse wave in the same cardiac cycle in real time, calculates a pulse wave propagation time, extracts a correction variable based on a morphological characteristic of the pulse wave, and calculates a correction matrix. By acquiring the variation of the above pulse wave propagation time, the corrected propagation time can be used in a conventional mathematical model to continuously measure the diastolic blood pressure and systolic blood pressure in each cardiac cycle under clinical conditions. High accuracy. [Selection figure] None