Sleep-disordered breathing detection method and apparatus with continuous blood pressure signal measured during sleep

摘要

The present invention relates to a method for detecting a sleeping breathing disorder by detecting a continuous blood pressure signal at the time of sleep and estimating the time of occurrence of a sleeping breathing disorder (SDB) and the degree of a breathing effort from the detected blood pressure signal, Apparatus and method. A sleep breathing disturbance abnormality detecting apparatus comprising a sleep breathing disturbance arithmetic processing unit for detecting a sleep breathing disturbance signal from a blood pressure signal received from a blood pressure monitoring apparatus for detecting a blood pressure at the time of sleep, A low-pass filtering step of passing a blood pressure signal received from the monitoring device through a low-pass filter to detect an LFC (low-frequency component) signal; A first Hilbert transform step of detecting an envelope signal by applying a Hilbert transform to the output signal of the low pass filtering step; An instantaneous phase calculation step of obtaining an instantaneous phase signal from the output signal of the first Hilbert transform step; The sleep breathing fault computation processing unit includes a difference computation step for differentiating (differentiating) the output signal of the instantaneous phase computation step; A periodic pattern detecting step of detecting, as a periodic pattern starting point, a point of time at which an output signal of the difference calculating step becomes a first threshold value or less; If a LFC (low frequency component) signal having an increased second threshold value or more is detected from an LFC (low frequency component) signal of a period pattern starting point among the LFC (low frequency component) signals inputted within one minute after the start of the period pattern, To a sleeping breathing disturbance event, the sleep breathing disturbance event detecting step.