What does SVT stand for in an EKG reading?

• A. Sinus variable tachycardia
• B. Supraventricular tachycardia
• C. Sinus ventricular tachycardia
• D. Single ventricular tachycardia

Answer: (B)

Supraventricular tachycardia (SVT) refers to a rapid heart rate originating above the ventricles, typically involving the atria or the atrioventricular (AV) node. This condition often manifests on an electrocardiogram (EKG) as a series of rapid, regular heartbeats, often exceeding 100 beats per minute. Recognizing SVT is essential in emergency medicine, as it can lead to significant symptoms like palpitations, dizziness, or even syncope.

While the other terms presented might seem plausible at first glance, they do not accurately reflect the established terminology in cardiology. "Sinus variable tachycardia" and "sinus ventricular tachycardia" suggest a relationship with the normal sinus rhythm, which does not align with the definition of SVT. "Single ventricular tachycardia," on the other hand, is not a recognized term in clinical practice and does not describe a mechanism of arrhythmia. Understanding these distinctions is important for accurate patient assessment and management in the emergency department.