Aortic pressure measuring device, cardiac stress measuring device, central blood pressure measurement method and cardiac stress measurement method

摘要

PROBLEM TO BE SOLVED: To provide a device and a method for measuring central blood pressure which enable exact and easy measurement of the central blood pressure, and a device for measuring a heart load which enables exact measurement of the degree of stress on the heart on the basis of the measured central blood pressure.SOLUTION: The device 1 for measuring a heart load, including the device 52 for measuring the central blood pressure, computes a triple product from first cardiac sound amplitude data in measurement showing the amplitude value of a first cardiac sound, second cardiac sound amplitude data in measurement showing the amplitude value of a second cardiac sound and heart rate data showing the heart rate and can detect the optimum motion intensity from heart load data. The device 52 for measuring the central blood pressure is equipped with a cardiac sound sampling means 3 which samples the cardiac sound of a person to be measured and outputs it as cardiac sound data, a second cardiac sound extracting means 51 which detects the second cardiac sound from the cardiac sound data, measures the amplitude value and makes it the second cardiac sound amplitude data in measurement, and a central blood pressure estimating means 508 which computes a central blood pressure value in measurement from central blood pressure data in ataraxia, based on the ratio between the second cardiac sound amplitude data in measurement and the amplitude data in ataraxia.