SAN FRANCISCO, CA — Knowing the number of hourly premature atrial contractions (PACs) a patient has is as good as the Framingham atrial fibrillation (AF) risk algorithm in predicting five- to 15-year ...

I am a 72-year-old man in excellent health and physical condition. I ride a bicycle 60 miles a week, and I generally feel good. I have an irregular heartbeat in the form of a premature atrial ...

DEAR MAYO CLINIC: I've noticed that sometimes my heart races or skips a beat. What causes this? Is there treatment for it? ANSWER: What you're experiencing may be an abnormal heart rhythm, also known ...

Multifocal atrial arrhythmia is an uncommon type of tachycardia that usually develops in people with certain illnesses. Those with the condition have a heart rate of over 100 beats per minute.

Please provide your email address to receive an email when new articles are posted on . Healthy adults experienced no increase in atrial arrythmias and less supraventricular tachycardia on days they ...