Heart stumbling while lying down – Dangerous?
Definition A cardiac arrhythmia or arrhythmia of the heart is defined as a heartbeat that is too fast (tachyarrhythmia) or too slow (bradyarrhythmia) or the occurrence of additional “extra” heartbeats (extrasystoles). Extrasystoles can briefly bring the heart out of its normal rhythm. They are also described as heart stumbles and often have a frightening effect … Heart stumbling while lying down – Dangerous?