In-depth

Heart arrhythmias

A heart arrhythmia is an abnormal heart rhythm. Arrhythmias can be a byproduct of damage to the heart from disease or age.

Heart disease

Heart disease, usually thought of as blockages in the arteries that can cause a heart attack, can describe any medical condition affecting your heart.

Tachycardia

Tachycardia, a rapid heart rate, is caused by an abnormality in your heart's electrical impulses. Tachycardia can cause serious complications, including sudden cardiac arrest.

Wolff-Parkinson-White syndrome

An abnormal electrical pathway in the heart causes the rapid heart rate of Wolff-Parkinson-White syndrome.

Jun. 22, 2011