When a doctor listens to the heart of a person with a heart murmur, they may hear a whooshing, swishing, humming, or rasping sound. This is due to rapid, turbulent blood flow through the heart.

A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...

It's a common yet uncomfortable sensation when the heart beats rapidly for a second or two and then becomes normal. Whether it occurs when one is resting, after going up the stairs, or even while ...