Complete heart block means that there’s a complete separation of electrical activity between the upper and lower chambers of the heart. Without prompt medical attention, it can be fatal. Your heart ...

A 55-year-old woman goes to her primary care doctor because of palpitations, diaphoresis, continued sweating, and feeling nervous. Her physical examination is normal except for elevated heart rate ...

Irregular heart rhythms, such as atrial fibrillation and atrial flutter, affect millions of Americans and can increase the risk of serious complications if left untreated. Understanding the warning ...

A 31-year-old woman with no significant medical history presents with intermittent heart palpitations, dizziness, shortness of breath, and fatigue provoked by exercise. Can you make the diagnosis? A ...

Atrial tachycardia is an abnormal heart rhythm where the top chambers in your heart beat quicker than usual. During an atrial tachycardia episode, your heart rate may exceed 100 beats per minute (bpm) ...