Effect of controlled breathing on short-term cardiovascular variability: An investigation in chronic heart failure patients

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Voluntary control of breathing (CB) has been proposed as a means to standardize short-term investigations on cardiovascular variability (CVV). In this study we assessed the changes induced by CB on ventilatory and cardiovascular parameters in 17 chronic heart failure (CHF) patients. We recorded instantaneous lung volume (ILV), RR interval, systolic arterial pressure (SAP) and end-tidal CO2 (ETCO2, 10 patients) during 8' of spontaneous breathing (SB) and 8' of CB at 0.22 Hz. CB caused a - 14% reduction in Respiratory Rate, a + 57% and +27% increase respectively in Tidal Volume and Minute Ventilation and a -7% decrease in ETCO2. A negligible change was observed in mean RR and SAP. No significant change was observed in LF power of RR and SAP and in baroreflex sensitivity, whereas HF power increased markedly. Hence, CB in CHF patients causes a mild hyperventilation but does not seem to influence autonomic cardiovascular control. Only respiratory-related oscillations of CVV signals are affected by CB.

Original languageEnglish
Title of host publicationComputers in Cardiology
Pages217-219
Number of pages3
Publication statusPublished - 2001
EventComputer in Cardiology 2001 - Rotterdam, Netherlands
Duration: Sep 23 2001Sep 26 2001

Other

OtherComputer in Cardiology 2001
CountryNetherlands
CityRotterdam
Period9/23/019/26/01

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

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