Ventricular Tachycardia (VT) is a rapid heartbeat that starts in the lower chambers of the heart.
VT is a pulse rate of more than 100 beats a minute, with at least three irregular heartbeats in a row.
The condition can develop as an early or late complication of a heart attack. It may also occur in people with:
- Heart failure
- Heart surgery
- Valvular heart disease
- VT can occur without heart disease.
Scar tissue may form in the muscle of the ventricles days, months or years after a heart attack. This can lead to ventricular tachycardia.
You may have symptoms if the heart rate during a VT episode is very fast or lasts longer than a few seconds. Symptoms may include:
- Chest discomfort
- Lightheadedness or dizziness
- Sensations the heart beating
- Shortness of breath
Symptoms may start and stop suddenly. In some cases, there are no symptoms.