Tachycardia (Fast Heartbeat)
If you have tachycardia, your heart beats very fast, at least more than 100 beats per minute. This can cause dizziness, lightheadedness, or a fluttering in the chest. An implantable cardioverter defibrillator continuously monitors your heart and delivers life-saving therapies to treat dangerously fast heart rhythms.
Tachycardia is a fast heart rate (more than 100 beats per minute) that starts in the heart's lower chambers (ventricles). At these elevated rates, the heart is not able to efficiently pump oxygen-rich blood to your body.
Tachycardia can occur in either the upper heart chambers (atrial tachycardia) or lower heart chambers (ventricular tachycardia).
Causes of tachycardia include:
Symptoms of tachycardia include:
Certain conditions can increase your risk of developing tachycardia:
Information on this site should not be used as a substitute for talking with your doctor. Always talk with your doctor about diagnosis and treatment information.