title: [Preoperative risk evaluation in beating-heart coronary artery bypass surgery].
abstract: OBJECTIVE
  Operative risk stratification scales for use in cardiac surgery have been developed for patients who undergo procedures using extracorporeal circulation. The aims of the present study were to investigate the use of six preoperative risk stratification scales in patients undergoing beating-heart surgery and to identify risk factors for major complications and mortality in our group of patients who underwent revascularization using this approach.
  
  
  METHODS
  Between January 1997 and December 2002, we performed 762 coronary artery bypass operations on the beating heart; 61 patients suffered major complications (8%) and 25 died (3.3%). Risk factors for major complications and death were identified using logistic regression analysis of prospectively collected data. The following risk scores were calculated for each patient: Parsonnet 95, Parsonnet 97, Euroscore, Cleveland, Ontario, and French. Receiver operating characteristic curves were used to compare the ability of each scale to predict mortality and major complications.
  
  
  RESULTS
  In our patient group, the preoperative variables associated with increased risk were: need for cardiopulmonary resuscitation, renal dysfunction, peripheral vasculopathy, and the presence of severe left main coronary artery disease, three-vessel disease, or an impaired ejection fraction.
  
  
  CONCLUSIONS
  Mortality and major complications were best predicted by the Parsonnet 95 and Euroscore scales.
authors.affiliation: Servicio de Cirugía Cardíaca, Area del Corazón, Complejo Hospitalario Universitario Juan Canalejo, La Coruña, España.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Vázquez Roque
authors.forename: Rubén
authors.initials: R
authors.lastname: Fernández Tarrío
authors.forename: Salvador
authors.initials: S
authors.lastname: Pita
authors.forename: José J
authors.initials: JJ
authors.lastname: Cuenca
authors.forename: José M
authors.initials: JM
authors.lastname: Herrera
authors.forename: Vicente
authors.initials: V
authors.lastname: Campos
authors.forename: Francisco
authors.initials: F
authors.lastname: Portela
authors.forename: Fernando
authors.initials: F
authors.lastname: Rodríguez
authors.forename: José V
authors.initials: JV
authors.lastname: Valle
authors.forename: Alberto
authors.initials: A
authors.lastname: Juffé
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001026:Coronary Artery Bypass / Q000379:methods*; D003327:Coronary Disease / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011300:Preoperative Care; D018570:Risk Assessment