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Sustained Monomorphic Ventricular Tachycardia Ablation from the Aortic Sinus of Valsalva
Author(s) -
LI YIGANG,
GRÖNEFELD GERIAN,
ISRAEL CARSTEN,
HOHNLOSER STEFAN H.
Publication year - 2002
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 - 10.1046/j.1540-8167.2002.00130.x
Subject(s) - medicine , cardiology , ablation , aortic sinus , sinus (botany) , ventricular tachycardia , qrs complex , tachycardia , sinus rhythm , aorta , atrial fibrillation , botany , biology , genus
Ablation of Monomorphic VT from the Aortic Sinus.Introduction: The aim of this study was to delineate the electrophysiologic mechanisms of a novel type of ventricular tachycardia (VT) originating from the aortic sinus of Valsalva. Methods and Results: Endocardial mapping was performed in four patients with symptomatic VT originating from the aortic sinus of Valsalva. Two patients suffered from dilative cardiomyopathy; the other two patients had no structural heart disease. Five VTs could be induced and terminated by programmed ventricular stimulation. Successful ablation was performed in the noncoronary sinus of Valsalva in three VTs and in the left aortic sinus in two. Abnormal (diastolic or presystolic) potentials were recorded during sinus rhythm ( mean interval from the end of QRS complex to the potential 121 ± 98 msec ) and during VT ( mean interval from the potential to QRS complex 64 ± 45 msec ) at effective sites in the aortic sinuses of Valsalva. Concealed entrainment was demonstrated at all successful sites. VT recurred in one patient after 1 month, whereas no recurrences were observed during follow‐up of 8 ± 6 months in the other three patients. Conclusion: Reentry constitutes one mechanism of VT originating from the aortic sinus of Valsalva. Entrainment mapping is useful to characterize the reentrant circuit of these VTs and to guide ablation.