In-depth

Complications

Dysphagia

Prevention

Childhood vaccines

Childhood vaccines

Vaccines for adults

Risk factors

High blood pressure (hypertension)

Symptoms

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.

April 24, 2013