title: [The angiographic features of exercise-induced ST-segment elevation in patients without myocardial infarction].
abstract: OBJECTIVE
  To explore the incidence and angiographic features of exercise-induced ST-segment elevation in patients without prior myocardial infarction.
  
  
  METHODS
  Exercise-induced ST-segment elevation occurred in 15 out of 4601 consecutive patients without prior myocardial infarction underwent treadmill exercise testing during a 2-year period. The coronary angiographic features of the 15 patients (13 males, aged between 40 - 75 years) were analyzed.
  
  
  RESULTS
  Coronary angiography revealed one hemodynamically relevant stenotic vessel in 6 patients, two hemodynamically relevant stenotic vessels in 6 patients, three hemodynamically relevant stenotic vessels in 3 patients. Left anterior descending (LAD) coronary artery was affected in 12 patients. Left main coronary artery (LMCA) stenosis was evidenced in 1 patient and right coronary artery stenosis in 7 patients. Severe (90% - 100%) occlusions were visualized in 8 out of 13 patients with LAD or LMCA lesions. Elevated ST-segment leads were consistent with the ischemic area where the blood supply of myocardium was affected by diseased vessels.
  
  
  CONCLUSIONS
  The incidence of exercise induced ST-segment elevation in patients without prior myocardial infarction is very low and mostly due to severe fixed coronary artery stenosis, especially in LAD. The location of ischemic myocardium can be suggested by ST-segment elevation leads during exercise.
authors.affiliation: Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yan
authors.forename: Gao-ping
authors.initials: GP
authors.lastname: Li
authors.forename: Jing-xia
authors.initials: JX
authors.lastname: Li
authors.forename: Huai-gen
authors.initials: HG
authors.lastname: Jing
authors.forename: Ju-ying
authors.initials: JY
authors.lastname: Qian
authors.forename: Wen-qing
authors.initials: WQ
authors.lastname: Zhu
authors.forename: Jun-bo
authors.initials: JB
authors.lastname: Ge
authors.forename: You-shan
authors.initials: YS
authors.lastname: Lin
authors.forename: Jun-ren
authors.initials: JR
authors.lastname: Zhu
mesh_terms: D000328:Adult; D000368:Aged; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000503:physiopathology*; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged