Assessment of sleep-disordered breathing and sleep quality based on cardiopulmonary coupling

摘要

Assessment of sleep-disordered breathing and sleep quality is determined from cardiopulmonary coupling of data series between the two. In one embodiment, R-R interval series is derived from the electrocardiogram (ECG) signal. Normal heart rate from the R-R interval series is normally - is extracted to generate the (NN) intervals series normal. Surrogate respiration signal (ie, ECG-derived respiration (EDR)) amplitude variation in the QRS complex is used to extract the. Is corrected to exclude outliers, two series are resampled. Coherence and cross-spectral power of re-sampling the two signals is calculated over the coherence of multiple window. For each coherence window, the product of the cross-spectral power and coherence are used to calculate the cross power coherent.