title: [Coronary artery bypass graft surgery in patients with acute coronary syndrome. Analysis of results].
abstract: BACKGROUND
  The objective of this work was to determine the main risk factors that influence prognosis, results, morbidity and mortality rates and causes in patients with acute coronary syndrome requiring surgical myocardial revascularization.
  
  
  METHODS
  This was a retrospective study including patients in our hospital with acute coronary syndrome requiring coronary artery bypass-graft surgery between January 2000 and December 2003. The following were identified and compared with international values: demographic factors, indications for surgery, intercurrent pathologies, results of the procedures, morbidity and mortality rates and causes.
  
  
  RESULTS
  There were 73 males and 23 females with an age range of 46 to 88 years old. The main cause of surgery was unstable angina (42.7%). In two patients, surgery was indicated for percutaneous coronary angioplasty failure and in 28 patients due to mechanical complications of acute myocardial infarction. The procedure was urgent in 90.6%. The majority of patients were in Killip-Kimball or Forrester class I or II. Risk factors detected were left ventricular failure, mechanical complications, emergency surgery, diabetes and respiratory or renal failure. Perioperative mortality was 14.5% and morbidity was 41.6%, both compared with risk classification scales and were lower than expected according to Parsonet and Tuman evaluations.
  
  
  CONCLUSIONS
  With a major number of risk factors and the high-risk associated with surgery, in our center surgical treatment for acute coronary syndromes showed favorable results.
authors.affiliation: División de Cirugía Cardiotorácica, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Careaga-Reyna
authors.forename: Gerando
authors.initials: G
authors.lastname: Martínez-Carballo
authors.forename: Filiberto
authors.initials: F
authors.lastname: Villanueva-Rustrián
authors.forename: Rubén
authors.initials: R
authors.lastname: Argüero-Sánchez
mesh_terms: D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D000789:Angina, Unstable / Q000188:drug therapy / Q000453:epidemiology / Q000601:surgery; D015897:Comorbidity; D001026:Coronary Artery Bypass / Q000706:statistics & numerical data*; D003327:Coronary Disease / Q000188:drug therapy / Q000601:surgery*; D003430:Cross-Sectional Studies; D004630:Emergencies; D005260:Female; D006333:Heart Failure / Q000145:classification / Q000453:epidemiology / Q000209:etiology; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D009203:Myocardial Infarction / Q000188:drug therapy / Q000453:epidemiology / Q000601:surgery; D011183:Postoperative Complications / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D012720:Severity of Illness Index; D013577:Syndrome; D016896:Treatment Outcome