title: Preprocedural serum levels of C-reactive protein predict early complications and late restenosis after coronary angioplasty.
abstract: OBJECTIVE
  We sought to investigate whether early and late outcome after percutaneous transluminal coronary angioplasty (PTCA) could be predicted by baseline levels of acute-phase reactants.
  
  
  BACKGROUND
  Although some risk factors for acute complications and restenosis have been identified, an accurate preprocedural risk stratification of patients undergoing PTCA is still lacking.
  
  
  METHODS
  Levels of C-reactive protein (CRP), serum amyloid A protein (SAA) and fibrinogen were measured in 52 stable angina and 69 unstable angina patients undergoing single vessel PTCA.
  
  
  RESULTS
  Tertiles of CRP levels (relative risk [RR] = 12.2, p < 0.001), systemic hypertension (RR = 4.3, p = 0.046) and female gender (RR = 4.1, p = 0.033) were the only independent predictors of early adverse events. Intraprocedural and in-hospital complications were observed in 22% of 69 patients with high serum levels (>0.3 mg/dl) of CRP and in none of 52 patients with normal CRP levels (p < 0.001). Tertiles of CRP levels (RR = 6.2, p = 0.001), SAA levels (RR = 6.0, p = 0.011), residual stenosis (RR = 3.2, p = 0.007) and acute gain (RR = 0.3, p = 0.01) were the only independent predictors of clinical restenosis. At one-year follow-up, clinical restenosis developed in 63% of patients with high CRP levels and in 27% of those with normal CRP levels (p < 0.001).
  
  
  CONCLUSIONS
  Preprocedural CRP level, an easily measurable marker of acute phase response, is a powerful predictor of both early and late outcome in patients undergoing single vessel PTCA, suggesting that early complications and clinical restenosis are markedly influenced by the preprocedural degree of inflammatory cell activation.
authors.affiliation: Istituto di Cardiologia, Università Cattolica del Sacro Cuore, Rome, Italy. abuffon@mail.OMNITEL.IT
authors.forename: A
authors.initials: A
authors.lastname: Buffon
authors.forename: G
authors.initials: G
authors.lastname: Liuzzo
authors.forename: L M
authors.initials: LM
authors.lastname: Biasucci
authors.forename: P
authors.initials: P
authors.lastname: Pasqualetti
authors.forename: V
authors.initials: V
authors.lastname: Ramazzotti
authors.forename: A G
authors.initials: AG
authors.lastname: Rebuzzi
authors.forename: F
authors.initials: F
authors.lastname: Crea
authors.forename: A
authors.initials: A
authors.lastname: Maseri
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects*; D002097:C-Reactive Protein / Q000032:analysis*; D005260:Female; D005340:Fibrinogen / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011379:Prognosis; D012008:Recurrence; D018570:Risk Assessment; D000685:Serum Amyloid A Protein / Q000032:analysis
chemical_list: D000685:Serum Amyloid A Protein; D005340:Fibrinogen; D002097:C-Reactive Protein