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Table 1 Heart rate variability during the sitting position in spontaneous breathing with and without bi-level positive airway pressure (BiPAP) application between control and chronic obstructive pulmonary disease (COPD) patients

From: Heart rate variability in the elderly with chronic obstructive pulmonary disease submitted to acute application of bi-level positive airway pressure

  

Control

COPD with BiPAP

COPD without BiPAP

Time domain

RMSSD (ms)

15.04 ± 5.72

14.16 ± 9.47

10.74 ± 9.18†

 

RMSM (ms)

27.36 ± 12.61

18.98 ± 14.41

15.10 ± 10.16

Frequency domain

BFun

48.22 ± 13.45

30.46 ± 13.23*

42.88 ± 20.68

 

AFun

51.80 ± 13.44

69.54 ± 13.23*

57.12 ± 20.68

 

BF/AF

1.04 ± 0.51

0.49 ± 0.35*

1.04 ± 0.92

  1. Values presented as means ± standard deviation. * Control versus COPD without BiPAP, P < 5%; †COPD without BiPAP versus with BiPAP, P < 5%.
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Critical Care

ISSN: 1364-8535