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Taking action to control your risk factors—through staying physically active, quitting smoking, maintaining a healthy weight, making heart-healthy eating choices, and managing stress—can help prevent a stroke, or if you’ve already had a stroke, prevent another one.

Sudden cardiac arrest is a condition in which the heart suddenly and unexpectedly stops beating. If this happens, blood stops flowing to the brain and other vital organs. Sudden cardiac arrest usually causes death if it's not treated within minutes.

The risk of sudden cardiac arrest increases with age and is higher in men and may be higher in blacks. The major risk factor for sudden cardiac arrest is coronary heart disease, but there are other risk factors such as known arrhythmia or personal or family history of sudden cardiac arrest or heritable forms of arrhythmia.

Oxygen therapy is a short- or long-term treatment that delivers oxygen gas for you to breathe to help increase the amount of oxygen in your blood.

A nuclear heart scan is an imaging test that uses special cameras and a radioactive substance called a tracer to create pictures of your heart.

Percutaneous coronary intervention (PCI), also known as coronary angioplasty, is a nonsurgical procedure that improves blood flow to your heart.

Sleep studies are painless, noninvasive tests that measure how well you sleep and how your body responds to sleep problems. The more common sleep studies monitor and record data about your body during a full night of sleep.

A ventricular assist device (VAD) is a mechanical pump that supports heart function and blood flow in people who have weakened hearts. These devices can support the function of the left, right, or both heart ventricles.

While there is no cure for LAM, doctors treat LAM with sirolimus (rapamycin), a medicine that stabilizes lung function, treats an abnormal fluid buildup in the lung called chylothorax, and improves overall quality of life. They may also prescribe other medicines or therapies to control other symptoms or complications.

Carotid endarterectomy is surgery that removes plaque buildup from inside a carotid artery in your neck.