With symptoms such as a racing, fluttering heartbeat and shortness of breath, atrial fibrillation (AFib) is more than uncomfortable — it makes stroke five times more likely and, over time, can weaken ...

A child's normal heart rate varies by age and size, with babies typically having higher rates than older children. It’s important for parents to know how to check their child's pulse to recognize when ...

Most of the time, you don't think about your heartbeat. It works quietly in the background of your day. But sometimes your heart's rhythm sends important cues from ...

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Your heart has been doing its job faithfully for years, beating steadily in the background while you go about your daily life. Then suddenly, you become acutely aware of every beat as it seems to ...

What Is Cardamyst, and Why Does It Matter? Cardamyst (etripamil) is a new nasal spray for treating sudden episodes of fast heartbeats, known as paroxysmal supraventricular tachycardia (PSVT), and ...

A slow heartbeat may not always raise immediate concern, but in many people, it signals an underlying heart rhythm disorder known as bradycardia. Defined as a resting heart rate of fewer than 60 beats ...

DEAR MAYO CLINIC: I've been diagnosed with atrial fibrillation. I've read that it puts me at greater risk of stroke. Can you tell me more about this? ANSWER: You may not have known you had atrial ...

If you sometimes experience a racing or irregular heartbeat, it may be caused by atrial fibrillation (AFib), the most common type of heart arrhythmia. AFib can make you five times more likely to have ...

DEAR MAYO CLINIC: I've been diagnosed with atrial fibrillation. I've read that it puts me at greater risk of stroke. Can you tell me more about this? ANSWER: You may not have known you had atrial ...