Acute effects of expiratory positive pressure on autonomic cardiac modulation during spontaneous and slow deep breathing in COPD patients
Document title: Acute effects of expiratory positive pressure on autonomic cardiac modulation during spontaneous and slow deep breathing in COPD patients
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000436070
ISSN: 0001-3765
Authors: 1
1
3
1
2
1
2
Institutions: 1Universidade de Santa Cruz do Sul, Departamento de Ciencias da Saude, Santa Cruz do Sul, Rio Grande do Sul. Brasil
2Universidade Federal de Sao Carlos, Departamento de Fisioterapia, Sao Carlos, Sao Paulo. Brasil
3Hospital Santa Cruz, Programa de Residencia Multiprofissional em Saude/ Fisioterapia, Santa Cruz do Sul, Rio Grande do Sul. Brasil
Year:
Volumen: 92
Number: 2
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract Aim: 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. Methods: 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. Results: 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 pressure. Conclusion: A 5 cmH2O expiratory positive airway pressure during spontaneous and slow deep breathing can elicit an acute response, resulting in a cardiac autonomic control improvement in moderate-to-very severe patients
Disciplines: Medicina
Keyword: Sistema cardiovascular,
Neumología,
Sistema nervioso autónomo,
Enfermedad pulmonar obstructiva crónica (EPOC),
Frecuencia cardiaca,
Respiración con presión positiva,
Arritmia sinusal
Keyword: Cardiovascular system,
Pneumology,
Autonomic nervous system,
Chronic obstructive pulmonary disease (COPD),
Heart rate,
Positive pressure respiration,
Sinusal arrhythmia
Full text: Texto completo (Ver HTML) Texto completo (Ver PDF)