In-depth

Complications

Dysphagia

Prevention

Childhood vaccines

Childhood vaccines

Wonder about the benefits and risks of childhood vaccines? Get answers to your questions.

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