[Myocardial infarction with ST segment elevation and angiographically normal coronary arteries: epidemiology and mid-term follow-up].
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.
Ferrer Gracia
María Cruz
MC
Unidad de Hemodinámica, Instituto Cardiovascular, Hospital Universitario San Carlos, Madrid, Spain. mcferrergracia@yahoo.es
Hernández-Antolín
Rosa Ana
RA
Pérez-Vizcayno
María José
MJ
Conde Vela
César
C
Alfonso Manterola
Fernando
F
Macaya Miguel
Carlos
C
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*