Supraventricular tachycardia Paroxysmal supraventricular tachycardia SNOMEDCT_US:67198005 Episodic supraventricular tachycardia UMLS:C4280507 PSVT HP:0004765 An episodic form of supraventricular tachycardia with abrupt onset and termination. PSVT is a term used to denote intermittent supraventricular tachycardia other than atrial fibrillation, atrial flutter and multifocal atrial tachycardia (AT). The major causes are atrioventricular reentrant tachycardia (AVNRT), atrioventricular reentrant tachycardia (AVRT), and sinoatrial node reentrant tachycardia (SNRT). UMLS:C0030590 HP:0004763 Episodic rapid heart beat