|Sinus bradycardia seen in lead II with a heart rate of about 50.|
|Classification and external resources|
||427.81, 659.7, 785.9, 779.81|
Bradycardia is a condition wherein an individual has a slow
During sleep, a slow heartbeat with rates around 40–50 BPM is common, and is considered normal. Highly trained
The term relative bradycardia is used in explaining a heart rate that, although not actually below 60 BPM, is still considered too slow for the individual's current medical condition.