Screening and managing obstructive sleep apnoea in nocturnal heart block patients: an observational study

Respiratory Research

Table 3 Sleep and arrhythmia parameters in subgroups prior to and following the application of CPAP therapy

Variable	AHI < 10 (n = 10)			AHI ≥ 10 (n = 41)		p-value*
Pressure (cm H₂O)	8.07 ± 0.15			8.29 ± 3.50		0.647
Compliance (h/night)	4.7 ± 2.5			5.8 ± 3.1		0.307
	Pre-CPAP	Post-CPAP	p-value**	Pre-CPAP	Post-CPAP	p-value**
Mean O₂ desaturation (%)	8 %	7 %	0.506	23 %	7 %	0.047
AHI (events/h)	5.28 ± 1.25	3.53 ± 0.35	0.189	41.01 ± 24.20	3.93 ± 2.58	0.014
RR interval(>2 s, events/h)	30.67 ± 38.66	35.33 ± 48.34	0.051	110.89 ± 299.27	16.07 ± 58.52	0.001
Longest RR (>2 s, second)	2.68 ± 1.12	2.6 ± 0.58	0.952	13.81 ± 50.29	0.53 ± 1.00	0.058

Values are given as mean ± SD and n %
*Comparison of CPAP parameters between two subgroups at an AHI cut-off point of 10
**Comparison of changes in the sleep and arrhythmia variables at baseline and after CPAP in two subgroups

ISSN: 1465-993X