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Manifest Fast and Slow Pathway Conduction Patterns and Reentry in a Patient with Dual AV Nodal Physiology
Author(s) -
ELIZARI MARCELO V.,
SANCHEZ RUBEN A.,
CHIALE PABLO A.
Publication year - 1991
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.1991.tb01308.x
Subject(s) - reentry , medicine , nodal , cardiology , sinus rhythm , refractory period , beat (acoustics) , thermal conduction , qrs complex , electrical conduction system of the heart , atrial fibrillation , electrocardiography , physics , materials science , acoustics , composite material
Manifest Fast and Slow AV Nodal Conduction Patterns and Reentry. A 52‐year‐old woman with paroxysmal supraventricular tachycardias (PST) showed short and long PR intervals during sinus rhythm. Repetitive episodes of PST due to simultaneous anterograde conduction through fast and slow conduction pathways (one P‐two QRS) were recorded. A self‐limited episode of non‐paroxysmal AV nodal reentry with anterograde slow and retrograde fast pathway conduction was initiated by a single atrial premature beat. Each pathway depicted distinct refractory periods, conduction velocities, unidirectional block, and Wenckebach‐type block suggesting the possibility of a well‐defined anatomical substratum.