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European Journal of Cardio-Thoracic Surgery, Vol 4, 461-464, Copyright © 1990 by European Association for Cardio-thoracic Surgery

ARTICLES

Anatomically guided surgery to the AV node. AV nodal skeletonization: experience in 46 patients with AV nodal reentrant tachycardia

GM Guiraudon, GJ Klein, N van Hemel, CM Guiraudon, R Yee and FE Vermeulen
Department of Surgery, University of Western Ontario, University Hospital, London, Canada.

We report our combined experience with operative therapy for atrioventricular nodal tachycardia using an anatomically guided procedure. The operative rationale was to dissect the AV node with the intent of modifying perinodal tissues (skeletonization). The anterior septal and posterior septal regions were initially approached epicardially to facilitate endocardial dissection. Under normothermic cardiopulmonary bypass, the right atrial septum was mobilized and the intermediate AV node was exposed anterior to the tendon of Todaro. Ablation of concomitant accessory pathways was done prior to AV nodal skeletonization. Forty-six patients aged 9-71 years (mean 36) were operated upon. Five patients had accessory pathways in addition to AV nodal reentry. At electro-physiological study prior to discharge, no patient had an AV block although anterograde and retrograde Wenckebach cycle lengths were significantly prolonged. Ten patients had a retrograde AV block. The 46 patients were free of arrhythmia and not taking antiarrhythmic medication after a follow-up of 1-45 months (mean 17). Three patients had a recurrence of the tachycardia 10 days, 2 months and 7 months post-operatively, respectively. All patients had a subsequently successful reoperation.

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				G.P. Kimman, N.M. van Hemel, E.R. Jessurun, P.F.H.M. van Dessel, J.C. Kelder, J.J.A.M.T. Defauw, and G.M. Guiraudon Comparison of late results of surgical or radiofrequency catheter modification of the atrioventricular node for atrioventricular nodal reentrant tachycardia Eur. Heart J., April 1, 1999; 20(7): 527 - 534. [Abstract] [PDF]