title: Unmasking accessory pathway conduction due to AV block following tricuspid valve replacement.
abstract: Atrioventricular block during radiofrequency (RF) ablation of an accessory pathway may be due to inadvertent RF damage or catheter pressure to the conduction system, or a pre-existent conduction defect. Conversely, block in the normal conduction system may unmask pre-excitation. We describe a case where total infra-Hisian block complicated tricuspid valve surgery, unmasking a hitherto undiagnosed left lateral accessory pathway.
authors.forename: T A
authors.initials: TA
authors.lastname: Simmers
authors.forename: L C
authors.initials: LC
authors.lastname: Otterspoor
authors.forename: J B
authors.initials: JB
authors.lastname: Winter
keywords: AV block; ablation; accessory pathway; surgery (cardiac)