Abstract
After a clinical case about paroxysmal supraventricular tachycardia (PSVT), the chapter discusses two supraventricular reentrant tachycardias: atrioventricular node reentrant tachycardia (AVNRT) and atrioventricular reentrant tachycardia (AVRT).
AVNRT is the most common form of regular PSVT. The reentry circuit is localized in the atrioventricular node area and is due to the presence of two nodal pathways (slow pathway and fast pathway). AVNRT has been categorized into typical (fast retrograde via) and atypical (slow retrograde via).
Ventricular preexcitation due to presence of an accessory pathway is the physiopathological substrate of AVRT. The reentry circuit involves the atrium, ventricle, normal conduction system, and accessory pathway. The most common accessory pathway is the bundle of Kent, a muscular bundle that connects directly the atrium and ventricle. The presence of accessory pathway and episodes of PSVT characterized the Wolff-Parkinson-White syndrome.
Supraventricular reentrant tachycardia treatment includes an acute phase (arrhythmia interruption) and a long-term phase (recurrence prevention). Supraventricular reentrant tachycardias can be interrupted by vagal maneuvers or by drugs. Recurrence prevention can be made possible by drugs or by catheter ablation.
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Contadini, D., Menditto, A. (2015). Supraventricular Reentrant Tachycardias. In: Capucci, A. (eds) Clinical Cases in Cardiology. Springer, Cham. https://doi.org/10.1007/978-3-319-19926-9_19
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DOI: https://doi.org/10.1007/978-3-319-19926-9_19
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-19925-2
Online ISBN: 978-3-319-19926-9
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