BLOOD PRESSURE INFORMATION CALCULATING DEVICE, BLOOD PRESSURE INFORMATION CALCULATING METHOD, BLOOD PRESSURE INFORMATION CALCULATING PROGRAM, AND RECORDING MEDIUM FOR RECORDING SAID PROGRAM

摘要

This blood pressure information calculating device 10, which calculates blood pressure information pertaining to a blood pressure value of a subject, is provided with: an input unit 32 which receives, as inputs, a waveform based on the pulse wave of the subject, and reference blood pressure information which is a reference for calculating blood pressure information on the basis of the pulse wave-based waveform; a frequency domain representation converting unit 33 which calculates a phase spectrum of the pulse wave-based waveform by Fourier-transforming the pulse wave-based waveform; a phase parameter calculating unit 34 which, on the basis of the phase spectrum, calculates a correction value by using at least one among a phase of a main wave which has a frequency corresponding to the pulse of the subject and a phase of a second harmonic wave corresponding to a second harmonic wave of the main wave; and an average blood pressure calculating unit 35 which calculates an average blood pressure by correcting the reference blood pressure information by using the correction value.