Acute effects of expiratory positive pressure on autonomic cardiac modulation during spontaneous and slow deep breathing in COPD patients

Anais Da Academia Brasileira De Ciências
AndrÉa L G DA SilvaAudrey Borghi-Silva

Abstract

to evaluate the acute effects of expiratory positive airway pressure on cardiac autonomic modulation in chronic obstructive pulmonary disease patients during spontaneous breathing and slow deep breathing. 17 patients were evaluated. The R-R intervals were collected (Polar® S810i) during spontaneous breathing (10 minutes) and slow deep breathing (4 minutes), with and without 5 cmH2O expiratory positive airway pressure. Stable signals were analyzed by Kubios®. Heart rate variability indices were computed in time domain and in frequency domain. Expiratory positive airway pressure application affected low frequency (spontaneous breathing: 62.5±4.1 vs slow deep breathing: 28.2±4.2, p<0.001) and high frequency (spontaneous breathing: 37.4±17.3 vs slow deep breathing: 58.9±18.1, p<0.001). Interactions were observed between expiratory positive airway pressure effect and slow deep breathing effect for low frequency (p<0.001), high frequency (p<0.001) and low frequency/high frequency ratio (p<0.001). When patients were stratified by disease's severity, we identified a significant low frequency reduction (p<0.001) and high frequency increase (p<0.001) for all stages when slow deep breathing was associated with expiratory positive airway p...Continue Reading

References

Jul 21, 1999·Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Médicas E Biológicas·J A NederL E Nery
Jul 29, 2003·The European Respiratory Journal·M P HighcockI E Smith
Nov 25, 2005·Chest·Michael R Pinsky
May 26, 2009·Respiratory Medicine·Audrey Borghi-SilvaDirceu Costa
Mar 2, 2010·The European Respiratory Journal·P T Macklem
Dec 17, 2014·COPD·Sunil K ChhabraK K Deepak
Jan 1, 2014·International Archives of Medicine·Adriano L RoqueCelso Ferreira
Sep 1, 2015·International Journal of Chronic Obstructive Pulmonary Disease·Adriana MazzucoAudrey Borghi-Silva
Aug 25, 2016·International Journal of Chronic Obstructive Pulmonary Disease·Cássia Da Luz GoulartAndréa Lúcia Gonçalves da Silva
Sep 30, 2017·The Clinical Respiratory Journal·Paulo de Tarso MüllerGaspar Rogério Chiappa

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