Wolff-Parkinson-White syndrome /wo͝olf″ pär″kinsən-(h)wīt″/ [Louis Wolff, American physician, 1898–1972; John Parkinson, English cardiologist, 1885–1976; Paul Dudley White, American cardiologist, 1886–1973] , a disorder of atrioventricular (AV) conduction involving an accessory pathway. This syndrome is often identified by a characteristic delta wave seen on an electrocardiogram at the beginning of the QRS complex. It is amenable to radiofrequency ablation. See also Lown-Ganong-Levine (LGL) syndrome.