Arrhythmias are irregularities in the heart’s rhythm, such as beating too fast, too slow, or erratically. While some are harmless, others can lead to organ damage or be life threatening. Various ...

An electrocardiogram (ECG) is the most common test to diagnose arrhythmia, and recording one as early as possible after heart palpitations can be helpful. Blood tests, stress tests, and chest x-rays ...

An arrhythmia is an irregular heartbeat that may feel like a racing or fluttering heart. It is not always serious but can sometimes indicate a potentially fatal heart problem. Arrhythmias — sometimes ...