Abstract
We investigated cardiorespiratory dynamic interaction within the low frequency region (<0.15 Hz) using broadband hypoxic stimulation during mean inspired oxygen levels of 16.5% and 12.5%. Spectral broadening of O2 level was obtained by pseudo random binary switching (PRBS) of inspired O2 level between 21% O2 and 4% (12% for mild hypoxia), balance nitrogen. Coherence analysis showed that during moderate hypoxia, responses of R-R interval, BP and ventilation were statistically related. Partial coherences showed fluctuations in R-R interval and Ventilation were correlated in the low frequency region. Parametric modeling resulted in a model with four poles and two zeros as a best fit between FIO2 and R-R interval.
Original language | English |
---|---|
Pages | 386-389 |
Number of pages | 4 |
State | Published - 1997 |
Event | Proceedings of the 1997 16th Southern Biomedical Engineering Conference - Biloxi, MS, USA Duration: Apr 4 1997 → Apr 6 1997 |
Conference
Conference | Proceedings of the 1997 16th Southern Biomedical Engineering Conference |
---|---|
City | Biloxi, MS, USA |
Period | 4/4/97 → 4/6/97 |
ASJC Scopus subject areas
- General Engineering