What does the medical abbreviation VT mean?

VT stands for ventricular tachycardia, a type of fast heart rhythm. Ventricular tachycardia starts in one or both of the heart's ventricles, the two lower chambers of the heart. In ventricular tachycardia, the heart rate can be very fast, making it difficult for the heart to pump enough blood. This can lead to symptoms such as light-headedness, dizziness, chest pain, shortness of breath, and fainting. Ventricular tachycardia can be a serious condition, but it can often be treated with medication, lifestyle changes, or medical procedures.