In-depth

Symptoms

Dizziness

Nausea and vomiting

Shortness of breath

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.

Tests and diagnosis

Chest X-rays

CT coronary angiogram

CT scan

Echocardiogram

Electrocardiogram

Holter monitor

Nov. 01, 2014