WPW syndrome is caused by

Ans. is 'b' i.e., Right sided accessory pathway Anatomy (Location ofAccessory pathway) in W.R W syndrome Electrophysiological studies and mapping have shown that accessory. Atrioventricular pathways may be located anywhere along the A-V rign or groove in the septum. The most frequent locations are : - Left lateral (50%), posteroseptal (30%) right anteroseptal (10%). Right lateral (10%). Preexcitation resulting from left sided accessory is called type A preexcitation. Preexcitation resulting from right sided accessory pathway is called type B preexcitation.