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

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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