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Angioplasty relieves symptoms of coronary artery disease by improving blood flow to your heart. Read on to learn what to expect before, during, and after the procedure.

A helpful guide to how your heart's electrical system works, complete with a diagram.

Being active doesn't mean that you have to wear yourself out. Even a little movement each day helps to strengthen your heart. If you can't get out to exercise, you can do simple stretching and strengthening exercises at home. Read on for helpful tips to be a bit more active.

Learn your treatment options for anterior cruciate ligament (ACL) injuries.

Hands are made up of more bones and moving parts than most other areas of the body. Learn more, along with helpful diagrams.

The heart contains 4 valves. The valves open and close to keep blood moving in the right direction through the heart. With each squeeze, the valves open and close to keep blood moving forward.

Mitral insufficiency means your mitral valve has problems closing, letting blood leak back through the valve. Mild cases of mitral insufficiency, when a small amount of blood leaks, rarely lead to problems. But severe cases can cause damage to the ventricle and heart muscle.

Potassium supplements help replace potassium your body as lost. This can happen if you take a water pill (diuretic), or because of a medical condition. Read on for tips on how to take potassium, as well as safety advice.

Follow our step-by-step guide to setting up a clean IV worksite.