Sudden cardiac arrest may occur in various conditions when someone, while active (playing basketball or walking with friends) ...

Pneumonia is a disease that burdens the health care system with more than 1.2 million emergency room visits each year and ...

Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one. You should see a doctor if bigeminy causes dizziness, chest pain, or trouble breathing. Bigeminy can be ...

A treatment-induced increase in plasma potassium levels reduced the risk of ventricular arrhythmias, in patients with ICDs and baseline plasma potassium levels of 4.3 mmol per liter or lower, based on ...

When recording your heartbeat, look out for skipped beats, extra beats, or long pauses between beats, that can feel like fluttering, racing or pounding in the chest. These are often signs of premature ...

Heart rhythm disorders, also known as arrhythmias, happen when the electrical signals that control your heartbeats don’t work properly. This can make the heart beat too fast, too slow, or in an ...

Everyone experiences a skipped or racing heartbeat sometimes—maybe after hearing shocking news, during a stressful moment, or even while dancing to your favorite song. Usually, these occasional ...

MADRID, Spain—Increasing low potassium levels improves clinical outcomes among patients with cardiovascular disease and a high risk for ventricular arrhythmias, the randomized POTCAST trial shows.

Nearly 60 million people have cardiac arrhythmia. Heart doctors list rarely mentioned triggers and ways to help keep your heart in rhythm. Ali Ayoub, MD, is a board-certified interventional ...

Sinus arrhythmia is a natural and periodic variation in the heart’s rhythm and represents a normally functioning heart. In a normal sinus rhythm, the time between heartbeats is equal, which can be ...