title: [Myocardial infarction with ST segment elevation and angiographically normal coronary arteries: epidemiology and mid-term follow-up].
abstract: OBJECTIVE
  The myocardial infarction (MI) with ST elevation and angiographically normal coronary arteries isn't frequent. The aim of this study is to describe clinical characteristic and mid-term follow-up of those patients.
  
  
  METHODS
  Between January 1997 and December 2004 we identified 75 patients with MI and normal coronary arteries in a coronary angiography performed within one month of the AMI. All had criteria of MI and their coronary arteries were smooth and without obstructive lesions.
  
  
  RESULTS
  The incidence was 3%, and mean age (standard deviation): 49 (11) years; 63% of patients were males and 47% were smokers, 33% had hypertension, 24% dislipemia and 9% diabetes. No patient had previous angina. MI location was anterior in 43%, inferior in 40% and lateral in 17%. The peak of creatine phosphokinase was 700 U/dl (range: 431-1,115) and the ejection fraction was 65% (14%). After a medium follow up of 30 months (range: 12-84) the events were: one death and 2 new MI.
  
  
  CONCLUSIONS
  MI with normal coronary arteries is rare, is associated with a relative low rate of coronary risk factors, and with a good initial outcome, low rate of recurrent events and preservation of left ventricular function.
authors.affiliation: Unidad de Hemodinámica, Instituto Cardiovascular, Hospital Universitario San Carlos, Madrid, Spain. mcferrergracia@yahoo.es
authors.forename: María Cruz
authors.initials: MC
authors.lastname: Ferrer Gracia
authors.forename: Rosa Ana
authors.initials: RA
authors.lastname: Hernández-Antolín
authors.forename: María José
authors.initials: MJ
authors.lastname: Pérez-Vizcayno
authors.forename: César
authors.initials: C
authors.lastname: Conde Vela
authors.forename: Fernando
authors.initials: F
authors.lastname: Alfonso Manterola
authors.forename: Carlos
authors.initials: C
authors.lastname: Macaya Miguel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D017023:Coronary Angiography / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology; D012849:Sinoatrial Node / Q000502:physiology*