Heart palpitations – a sensation that your heart is pounding or racing – are a common reason people seek medical care. But just because palpitations aren’t unusual doesn’t make them simple. “There are ...

An arrhythmia is an atypical heartbeat that is either much faster or slower than expected. Your heartbeat may be described as chaotic, rather than steady and predictable. There are several types of ...

Arrhythmia and dysrhythmia are terms that both describe an abnormal heart rate or rhythm, with arrhythmia being the more commonly used term. An abnormal heart rate can be either faster (tachycardia) ...

Compared with immediate defibrillation, the 2005 American Heart Association cardiac arrest resuscitation guidelines recommended that 2 minutes of cardiopulmonary resuscitation (CPR) before the first ...

A sinus arrhythmia refers to a problem with the sinus node of the heart. This controls the rhythm of the heart and can be fast (sinus tachycardia) or slow (sinus bradycardia). This article looks at ...