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Influence of Reciprocating Tachycardia on the Development of Atrial Fibrillation in Patients with Preexcitation Syndrome
Author(s) -
KALARUS ZBIGNIEW,
LENARCZYK RADOSŁAW,
KOWALSKI OSKAR,
PRUSZKOWSKASKRZEP PATRYCJA,
KRUPA HUBERT,
ŚREDNIAWA BEATA,
SOKAL ADAM,
ZIELIŃSKA TERESA
Publication year - 2007
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2007.00569.x
Subject(s) - medicine , atrial fibrillation , cardiology , tachycardia , accessory pathway , atrial tachycardia , anesthesia , population , p wave , electrophysiology , atrioventricular reentrant tachycardia , catheter ablation , environmental health
Background: We sought to evaluate the influence of atrio‐ventricular reentrant tachycardia (AVRT) on atrial pressures during tachycardia and the presence of atrial fibrillation (AF) in patients with preexcitation syndrome.Methods: The study population consisted of 88 patients (37 females, mean age 37.3 years) with left‐sided accessory pathway and AVRT induced during electrophysiologic study. The AF‐inducible group consisted of 32 patients with sustained episodes of AF provoked during electrophysiologic study, whereas the noninducible group comprised 56 patients without AF.Results: We found significantly higher values of maximal and mean left (LAP) and right (RAP) atrial pressures in the AF group compared with noninducible group: LAP max 32.0 versus 20.8, LAP mean 21.6 versus 13.2, RAP max 15.2 versus 11.5, RAP mean 8.2 versus 6.2 respectively (P < 0.001). When analyzing the effect of AVRT on atrial pressures, we found a significant (P < 0.001) negative correlation between anterograde conduction times during tachycardia and LAP max and LAP mean in the whole population, but a significant positive correlation between retrograde conduction time and left atrial pressures. Similar effects of AVRT on the right atrial pressures were found.Conclusions: Atrial pressures during AVRT, which depend on the electrophysiological features of tachycardia, play an important role in the genesis of atrial fibrillation in patients with preexcitation syndrome.