Table 1
Normal rhythm changes during sleep in healthy subjects
1,
2
ECG finding
Prevalence
AV, atrioventricular; bpm, beats per minute
Sinus pause (>2 s)
4–10%
Sinus bradycardia (<40 bpm)
24%
First degree AV block
8–12%
Wenckebach second degree AV block
6–11%