title: Predictors of coronary intervention-related myocardial infarction in stable angina patients pre-treated with statins.
abstract: BACKGROUND
  Peri-procedural myocardial infarction (PMI) is a frequent and prognostically important complication of percutaneous coronary intervention (PCI). This study was designed to determine the predictors of PMI in patients pre-treated with statins.
  
  
  METHODS
  A total of 418 stable angina pectoris patients taking statins and aspirin were included. All the patients underwent PCI. Serum concentrations of creatine kinase (CK-MB mass) and troponin I (TnI) were measured prior to and then within 16 to 24 hours after PCI. The incidence of PMI was assessed using the established criteria (≥ 3 times upper limit of normal).
  
  
  RESULTS
  Four hundred and eighteen stable patients (63 ±10 years, 68% males) were treated by PCI. The technical success rate of PCI was 99%. The incidence of PMI based on CK-MB mass or TnI release was 12% (PMI group). There were no significant differences in baseline clinical and procedural characteristics between PMI and non-PMI groups except for the balloon inflation time (40 ±44 s vs. 26 ±27 s; p = 0.02) and the proportion of treated type C lesions (42% vs. 28%; p = 0.03). In multivariate analysis, the independent predictors of PMI were balloon inflation time (OR = 1.01; 95% CI 1.001-1.020; p = 0.02) and pre-procedural level of C-reactive protein (OR = 1.38; 95% CI 1.059-1.808; p = 0.02).
  
  
  CONCLUSIONS
  These results suggest that C-reactive protein and balloon ischaemic time are independent predictors of PMI in stable angina patients pre-treated with statins.
authors.affiliation: Department of Cardiology, 2  Medical School, Charles University, University Hospital Motol, Prague, Czech Republic.
authors.forename: Josef
authors.initials: J
authors.lastname: Veselka
authors.forename: Petr
authors.initials: P
authors.lastname: Hájek
authors.forename: Martin
authors.initials: M
authors.lastname: Malý
authors.forename: David
authors.initials: D
authors.lastname: Zemánek
authors.forename: Radka
authors.initials: R
authors.lastname: Adlová
authors.forename: Pavol
authors.initials: P
authors.lastname: Tomašov
authors.forename: Lucie
authors.initials: L
authors.lastname: Martinkovičová
authors.forename: David
authors.initials: D
authors.lastname: Tesař
authors.forename: Pavel
authors.initials: P
authors.lastname: Cervinka