title: [Trends of risk factors in coronary surgery].
abstract: BACKGROUND
  In current era of widespread use of percutaneous coronary interventions (PCI), it is debatable whether coronary artery by-pass graft (CABG) patients are at higher risk.
  
  
  OBJECTIVE
  The aim of the study was to evaluate trends in risk profile of isolated CABG patients.
  
  
  METHODS
  By analysing the EuroSCORE and its risk factors, we reviewed a consecutive group of 4675 isolated CABG patients, operated on during the last 8 years (2001-2008) at our Clinic. The number of PCI patients was compared to the number of CABG patients. For statistical analyses, Pearson's chi-square and ANOVA tests were used.
  
  
  RESULTS
  The number of PCI increased from 159 to 1595 (p < 0.001), and the number of CABG from 557 to 656 (p < 0.001). The mean EuroSCORE increased from 2.74 to 2.92 (p = 0.06). The frequency of the following risk factors did not change over years: female gender, previous cardiac surgery, serum creatinine > 200 micromol/l, left ventricular dysfunction and postinfarct ventricular septal rupture. Chronic pulmonary disease, neurological dysfunction, and unstable pectoral angina declined significantly (p < 0.001). Critical preoperative care declined from 3.1% in 2001 to 0.5% in 2005, than increased and during the last 3 years did not change (2.3%). The mean age increased from 56.8 to 60.7 (p < 0.001) and extracardiac arteriopathy increased from 9.2% to 22.9% (p < 0.001). Recent preoperative myocardial infarction increased from 11% to 15.1% (p = 0.021), while emergency operations increased from 0.9% to 4.0% (p = 0.001).
  
  
  CONCLUSIONS
  The number of CABG increases despite the enlargement of PCI. The risk for isolated CABG given by EuroSCORE increases over years. The risk factors, significantly contributing to higher EuroSCORE are: older age, extracardiac arteriopathy, recent myocardial infarction and emergency operation.
authors.affiliation: Clinic for Cardiovascular Surgery, Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica, Serbia. bmihajlovic@ikvbv.ns.ac.rs
authors.forename: Bogoljub
authors.initials: B
authors.lastname: Mihajlović
authors.forename: Svetozar
authors.initials: S
authors.lastname: Nićin
authors.forename: Nada
authors.initials: N
authors.lastname: Cemerlić-Adjić
authors.forename: Katica
authors.initials: K
authors.lastname: Pavlović
authors.forename: Slobodan
authors.initials: S
authors.lastname: Dodić
authors.forename: Lazar
authors.initials: L
authors.lastname: Velicki
authors.forename: Miklos
authors.initials: M
authors.lastname: Fabri
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000706:statistics & numerical data; D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors