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 ...

Seizures can disrupt the autonomic nervous system, potentially leading to cardiac arrhythmias, which are abnormal heart rhythms. Cardiac arrhythmias can cause convulsive syncope, a condition ...

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 ...

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

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 ...

This procedure uses energy to make small scars in your heart tissue. These scars stop unusual electrical signals that move through your heart and cause an uneven heartbeat (your doctor might call it ...