Monomorphic ventricular tachycardia related to Wolff-Parkinson-White surgery
R J Hillock1, K C Roberts-Thomson, A D McGavigan
1Department of Cardiology, The Royal Melbourne Hospital, Grattan Street, Parkville, Melbourne 3052, Australia. richard.hillock@mh.org.au
Abstract:
Monomorphic ventricular tachycardia (MVT) is well described in patients who have had a ventricular scar due to repair of congenital heart disease. A 54-year-old woman presented with MVT 20 years after WPW surgery for a left-sided accessory pathway. The circuit was mapped to an area at the base of the left ventricle consistent with the incision described in the operation report. Entrainment confirmed the re-entrant circuit. Successful radiofrequency ablation was performed in a zone of slowed conduction consistent with the circuit isthmus. Any iatrogenic ventricular scar may form the substrate for MVT and be treated with standard electrophysiology techniques.
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