Supraventricular Tachycardia (SVT) Explained | Causes, ECG, Symptoms & Treatment Supraventricular Tachycardia (SVT) is a common cause of sudden rapid heart rate. In this video, we explain SVT in a simple, step-by-step way, making it easy for medical students, doctors, nurses, and the general public to understand. You’ll learn: ✔ What supraventricular tachycardia is ✔ Why SVT causes sudden palpitations ✔ Types of SVT (AVNRT, AVRT, Atrial Tachycardia) ✔ SVT ECG findings explained clearly ✔ Vagal m