Bradycardia is a condition characterized by a slower than normal heart rate. While a normal adult heart beats between 60 and ...

Less commonly, sinus arrhythmia may indicate an underlying medical problem, like heart disease or heart block. The heart's ...

Sinoatrial exit block occurs when the action potential initiated by the sinoatrial node is inhibited or completely blocked before it is able to leave the SA node and reach the atrium, and thus no ...