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) ...

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 ...

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 (pronounced as “uh-RITH-me-uh”) is an irregular heartbeat. This means your heart is out of its usual rhythm. About 1.5%-5% of people have arrhythmias. It may feel like your heart skipped ...

Atrial fibrillation is the most common cardiac arrhythmia worldwide with around 59 million people concerned in 2019. This irregular heartbeat is associated with increased risks of heart failure, ...

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 ...

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 ...

Sudden cardiac death (SCD) is a sudden, unexpected death caused by a change in heart rhythm (sudden cardiac arrest). It is the largest cause of natural death in the U.S., causing between 180,000 to ...