title: Clinical and angiographic characteristics of acute myocardial infarction caused by vasospastic angina without organic coronary heart disease.
abstract: BACKGROUND
  Vasospastic angina (VA) can occasionally cause acute myocardial infarction (AMI).
  
  
  RESULTS
  From January 2003 to June 2005, coronary spastic angina was diagnosed in 292 patients by performing spasm provocation tests. Among the 292 patients, 21 (7.2% of all the VA patients) had an AMI. There were 20 patients who initially visited the emergency room for AMI without suffering prior VA. One patient with a history of VA had an AMI when he discontinued his medication. Among the 21 VA patients with AMI, 14 had experienced severe emotional stress before they visited the emergency room. The spasm provocation test showed that the VA patients with AMI had more multivessel and diffuse spasm than the VA patients without AMI (p<0.001).
  
  
  CONCLUSIONS
  Clinically, the VA patients with AMI usually had their first symptom of VA as the severe chest pain of AMI. Two-thirds of the VA patients with AMI had experienced emotional stress before their AMI. Angiographically, the spasm provocation test for VA patients with AMI showed more multivessel and diffuse spasm than in VA patients without AMI.
authors.affiliation: Division of Cardiology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Pum Joon
authors.initials: PJ
authors.lastname: Kim
authors.forename: Ki-Bae
authors.initials: KB
authors.lastname: Seung
authors.forename: Dong-Bin
authors.initials: DB
authors.lastname: Kim
authors.forename: Sung-Ho
authors.initials: SH
authors.lastname: Her
authors.forename: Dong-Il
authors.initials: DI
authors.lastname: Shin
authors.forename: Seong-Wong
authors.initials: SW
authors.lastname: Jang
authors.forename: Chan-Seok
authors.initials: CS
authors.lastname: Park
authors.forename: Hoon-Joon
authors.initials: HJ
authors.lastname: Park
authors.forename: Hae-Ok
authors.initials: HO
authors.lastname: Jung
authors.forename: Sang Hong
authors.initials: SH
authors.lastname: Baek
authors.forename: Jae-Hyung
authors.initials: JH
authors.lastname: Kim
authors.forename: Kyu-Bo
authors.initials: KB
authors.lastname: Choi
mesh_terms: D000208:Acute Disease; D000328:Adult; D000787:Angina Pectoris / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D017023:Coronary Angiography; D003324:Coronary Artery Disease; D003329:Coronary Vasospasm / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006334:Heart Function Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D013315:Stress, Psychological / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology