WOLFF PARKINSON WHITE:

A syndrome caused by a symptomatic arrhythmia caused by preexcitation.

•ECG Findings:

•Delta wave; short PR interval; widened QRS complex.

•Orthodromic Conduction:

•Conduction into the ventricles goes down the AV node normally, and the reentrant conduction goes up the bypass tract.

•Antidromic Conduction:

•Conduction into the ventricles goes down the bypass tract and the reentrant conduction goes up the AV node.

See preexcitation.