title: Preprocedural levels of C-reactive protein and leukocyte counts predict 9-month mortality after coronary angioplasty for the treatment of unprotected left main coronary artery stenosis.
abstract: BACKGROUND
  An accurate preprocedural risk stratification scheme for patients with unprotected left main coronary artery (ULMCA) stenosis who are undergoing coronary stenting is lacking. We examined the predictive value of preprocedural levels of C-reactive protein (CRP), fibrinogen, and leukocyte counts with respect to 9-month clinical outcomes after stenting of the ULMCA stenosis.
  
  
  RESULTS
  Levels of CRP, fibrinogen, and leukocyte count were prospectively measured in 83 patients undergoing stenting of the ULMCA. A drug-eluting stent was used in 42 patients, and a bare metal stent was used in 41. The end point of the study was death and the combination of death and myocardial infarction (MI). By the 9-month follow-up, there were 11 deaths (13%), 7 MIs (8%), and 16 target lesion revascularizations (19%). Death and death/MI occurred in 19% and 31%, respectively, of 59 patients with high serum levels of CRP (>3 mg/L) but in none of 24 patients with normal CRP levels (for death, P=0.02; for death/MI, P=0.006). In multivariate analysis, the highest tertiles of CRP level (P=0.028) and leukocyte count (P=0.002) were the only independent predictors of death. The highest tertiles of CRP level (P=0.002) and leukocyte count (P=0.002) and acute coronary syndromes (P=0.05) were the only independent predictors of the combined end point death/MI.
  
  
  CONCLUSIONS
  Elevated preprocedural levels of CRP indicate an increased risk of death and death/MI after ULMCA stenting. Inflammatory risk assessment in patients with ULMCA stenosis may be useful for selecting patients for percutaneous coronary interventions with very low risk.
authors.affiliation: Istituto di Cardiologia, Policlinico S. Orsola, Università di Bologna, 40 138 Bologna, Italy. tulliopalmerini@hotmail.com
authors.forename: Tullio
authors.initials: T
authors.lastname: Palmerini
authors.forename: Antonio
authors.initials: A
authors.lastname: Marzocchi
authors.forename: Cinzia
authors.initials: C
authors.lastname: Marrozzini
authors.forename: Paolo
authors.initials: P
authors.lastname: Ortolani
authors.forename: Francesco
authors.initials: F
authors.lastname: Saia
authors.forename: Letizia
authors.initials: L
authors.lastname: Bacchi-Reggiani
authors.forename: Santo
authors.initials: S
authors.lastname: Virzì
authors.forename: Silvia
authors.initials: S
authors.lastname: Gianstefani
authors.forename: Angelo
authors.initials: A
authors.lastname: Branzi
mesh_terms: D000368:Aged; D000800:Angioplasty, Balloon / Q000009:adverse effects* / Q000401:mortality; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000378:metabolism*; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000097:blood* / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000401:mortality; D016019:Survival Analysis; D013997:Time Factors
chemical_list: D015415:Biomarkers; D002097:C-Reactive Protein