The first heart sound, or S1, is the "lub" of a normal heartbeat. It's a high-pitched sound that occurs at the beginning of systole—when the heart pumps blood out of the heart into the lungs or body.

Of the estimated 25 million Americans who suffer from coronary artery disease, fewer than 10 million have their problem neatly confined to a plug of fatty or chalky material in a single artery —what ...

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.

The aortic valve allows blood to leave the heart and travel through the aorta, which is the largest artery in the body. Aortic stenosis is when this heart valve narrows and doesn’t open fully. The ...

Aortic stenosis is a narrowing of the aortic valve that affects how blood flows through the heart and body. While not often linked to heart valve narrowing, high and irregular blood pressure can ...