Resolution of myocardial bridge-related wall motion abnormality and associated myocardial perfusion defect with beta-blocker therapy.

While not uncommon, a myocardial bridge may result in significant alterations in coronary flow hemodynamics to the point of being either clinically evident based on symptoms, or visually apparent on noninvasive imaging modalities. We report a case of a myocardial bridge of the mid-left anterior descending artery associated with anterior wall akinesis on left ventriculography, and evidence of a fixed perfusion defect in the anterior wall by gated cardiac single photon emission computed tomography that resolved with initiation of beta-blocker therapy.