Monitoring of physiological parameters based on variations of the photo-plethysmography signal

摘要

Method and apparatus for obtained using photo-plethysmography physiological parameter information related to the autonomic nervous system respiration, heart rate, heart rate variability, blood volume and / or varying is disclosed. In one embodiment, the method monitors (2506), blood pressure changes were identified (2504), the signal components of interest and to remove unnecessary components by filtering (2502), and preach signal acquires the preach signal (2508), (2510), blood pressure signal to monitor the heart rate - including (2512) that identifies the relationship related to the component of interest by performing an analysis of the heart rate signal. It is possible to identify the components of interest on the basis of this relationship, related to Mayer waves or breathing waves (2514). If it is related to the respiratory wave can be determined respiratory parameters (2516) and respiratory rate (2520). And if not, it is possible to obtain (2518), parameter information related to the autonomic nervous system by running the wave Meier analysis.