Which of the following is a supraventricular tachycardia?
High-Yield Explanation
The term supraventricular tachycardia (SVT) encompasses many tachycardias in which atrial or atrioventricular nodal tissue are essential for sustaining the arrhythmia. In practice, however, the term SVT is generally used to refer to atrioventricular nodal re-entry tachycardia (AVN), atrioventricular re-entry tachycardia (AV), and atrial tachycardia. Differential diagnosis of a narrow complex tachycardia Common causes Sinus tachycardia Atrioventricular nodal re-entry tachycardia (AVN) Atrioventricular re-entry tachycardia (AV) Atrial tachycardia Atrial flutter Atrial fibrillation Rare causes Inappropriate sinus tachycardia Sinus node re-entry Permanent junctional reciprocating tachycardia Non-paroxysmal junctional tachycardia Focal junctional tachycardia Ref: 1. Diagnosis and management of supraventricular tachycardia ; BMJ 2012;345:e7769 2. Blomstrom-Lundqvist C, Scheinman MM, Aliot EM, Alpe JS, Calkins H, Camm AJ, et al. ACC/AHA/ESC guidelines for the management of patients with supraventricular arrhythmias; J Am Coll Cardiol2003;42:1493-531.