Ventricular Tachycardias: Characteristics and Management.

Ventricular tachycardias include ventricular tachycardia, ventricular fibrillation, and torsades de pointes; although these rhythms may be benign and asymptomatic, others may be life threatening and lead to increased morbidity and mortality. To optimize patient outcomes, ventricular tachycardias need to be rapidly diagnosed and managed, and often the electrocardiogram (ECG) is the first and only manifestation of a cardiac defect. Understanding of the initial electrocardiographic pattern and subsequent changes can lead to early intervention and an improved outcome. This article describes mechanisms, ECG characteristics, and management of ventricular tachycardias.