Myocardial bridging causing transmural ischemia. Successful coronary artery bypass surgery.
Myocardial bridging is a common and usually benign inborn coronary anomaly. We report on a 51-year-old man who presented with recent angina on minimum physical effort. Cineangiography showed myocardial bridging of the mid-left anterior descending artery (LAD), and intracoronary ultrasonography excluded atherosclerotic disease. Gated single-photon emission computed tomography (SPECT), with exercise stress, showed an extensive anterior perfusion defect, and remarkable ST-segment elevation (up to 10 mm) in recovery. Vasospasm of the LAD was the main hypothesis. Additional oral drugs did not bring about improvement, as indicated on a new SPECT; disabling angina persisted. Surgical revascularization of the LAD by left internal mammary artery graft was performed. Two years later, SPECT and exercise tests returned to normal. The patient remains asymptomatic.
Vianna
Caio B
CB
Gonzalez
Maria M
MM
Jatene
Fabio B
FB
Gama
Marcus N
MN
Timerman
Sergio
S
Cesar
Luiz A
LA
D000787:Angina Pectoris / Q000209:etiology*; D001026:Coronary Artery Bypass; D003330:Coronary Vessel Anomalies / Q000150:complications* / Q000175:diagnosis / Q000601:surgery*; D003331:Coronary Vessels; D006801:Humans; D008297:Male; D008875:Middle Aged