Preprocedural high-sensitivity C-reactive protein predicts death or myocardial infarction but not target vessel revascularization or stent thrombosis after percutaneous coronary intervention

Cédric Delhaye, Arnaud Sudre, Gilles Lemesle, Sylvestre Maréchaux, Damien Broucqsault, Bernadette Hennache, Christophe Bauters, Jean-Marc Lablanche
Cardiovascular Revascularization Medicine: Including Molecular Interventions 2009, 10 (3): 144-50

BACKGROUND: High-sensitivity C-reactive protein (hs-CRP) elevation is associated with poor clinical outcome in patients with coronary artery disease (CAD). However, the prognostic value of preprocedural hs-CRP elevation before coronary stent implantation remains debated especially regarding restenosis and target vessel revascularization (TVR). Furthermore, whether hs-CRP elevation may predict stent thrombosis (ST) is unknown.

METHODS: We included 560 consecutive patients, who underwent coronary stent implantation in our institution. Blood samples for hs-CRP determination were obtained immediately before the procedure. During a median follow-up of 12.5 months, cardiovascular events including death, myocardial infarction (MI), TVR, and ST were systematically included.

RESULTS: Median hs-CRP was 3.10 [25-75th percentile: 1.36-8.63] mg/l. There were 27 (4.8%) deaths, 17 (3.1%) nonfatal MI, 58 (10.5%) TVR, and 12 (2.1%) ST. The composite criteria death-MI occurred in 44 (7.9%) patients. Independent predictors of the composite death-MI were hs-CRP level [hazard ratio (HR)=1.33 (95% CI: 1.05-1.70); P=.021], diabetes (P=.003), and multivessel CAD (P=.011). The composite death-MI occurred in 31 (13.3%) of the 233 patients with hs-CRP >4.63 mg/l vs. 13 (4.0%) of the 327 patients with hs-CRP <4.63 mg/L (P<.001). By contrast, hs-CRP predicted neither TVR [HR=0.88 (0.73-1.08); P=.23] nor ST [HR=1.15 (0.77-1.71); P=.49].

CONCLUSION: High hs-CRP levels before coronary stent implantation are associated with risk of death or MI, but are not related to TVR or ST. These data suggest that preprocedural hs-CRP is more a predictor of global cardiovascular risk than a predictor of stent-related complications.

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