Infarction in Wolff-Parkinson-White syndrome. Evolution of Q-wave-T-wave vector concordance.

Wolff-Parkinson-White syndrome often mimics myocardial infarction. Q-wave-T-wave discordance (upright T waves in the inferior leads with inferior Q waves) is normally found in Wolff-Parkinson-White syndrome as a result of secondary repolarization changes. We evaluated Q-wave-T-wave concordance as a result of an inferoposterior infarction and documented it with electrocardiographic, enzyme, and catheterization data.