Table 4.

Distribution of nocturnal atrial and ventricular arrhythmias among patients with obstructive sleep apnea (OSA) - percentage of events

	Control (AHI ≤ 5 events/h) (n = 492)	Mild OSA (AIH 5-15 events/h) (n = 154)	Moderate/severe OSA (AHI ≥ 15 events/h) (n = 121)	p value
General cardiac arrhythmia, %	53.30	77.30#	82.60#	< 0.001
Isolated premature ventricular complex, %	17.30	27.30#	39.70*	< 0.001
Ventricular bigeminy, %	0.80	0.00	5.00*	< 0.001
Coupled premature ventricular complex, %	1.00	0.00	5.00*	0.001
Non-sustained ventricular tachycardia, %	0.20	1.90	0.80	0.06
Isolate or coupled atrial premature complex, %	43.90	64.30#	73.60#	< 0.001
Non-sustained supraventricular tachycardia, %	6.70	7.10	15.70*	0.005
Chronic and paroxysmal atrial fibrillation, %	0.20	0.00	1.65*	0.03
Break (sinus breaks > 2.0 seconds and atrioventricular block),%	0.60	1.30	0.80	0.69

^*Differs from mild OSA and controls;

^#differs from control (p < 0.01).