Quantitative cardiopulmonary system interaction analysis method
A technology of interaction and analysis method, which is applied in the field of analysis to quantify the interaction of the cardiopulmonary system. It can solve problems such as the inability to accurately and comprehensively describe the functional state of the system and the inability to reflect the internal relationship of the system, and achieve quantitative evaluation of sleep quality, detailed and accurate description, Effect of quantifying coupling strength
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[0046] like figure 1 and figure 2 As shown, the analytical method of quantifying cardiopulmonary system interaction of the present invention comprises the following steps:
[0047] 1) Use a polyconductor physiological recorder to collect the body surface ECG signals, respiratory airflow signals and pulse wave signals at the end of the index finger of the subjects who sleep for 7 hours at night, and mark the sleep stages according to the R&K standard: REM (rapid eye movement sleep period) ), NREM (non-rapid eye movement sleep);
[0048] 2) if image 3As shown, the RR interval sequence {RRi, i=1, 2, 3, ..., N} is extracted beat by beat from the collected body surface ECG signal, and the PP interval sequence {PPi, i=1,2,3,...,N}, extract the RA interval sequence {RAi, i=1,2,3,...,N} from the collected respiratory airflow signal beat by beat; and according to the synchronized body surface ECG signal and pulse wave signal, calculate the pulse wave transit time PTT sequence {PT...
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