A rapid heartbeat and shortness of breath could be signs of atrial fibrillation (AFib), an irregular heartbeat.

Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person’s risk of stroke, heart failure and even premature death. While many risk factors contribute to A-fib ...

Arvind Sridhar, University of Illinois Chicago (THE CONVERSATION) Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person’s risk of stroke, heart failure and even ...

Harbaugh has what's called an atrial flutter, which is a type of arrhythmia ... "Did an [electrocardiogram], and they said it was back to the sinus rhythm," Harbaugh told reporters.