Preprocedural High-Sensitivity C-Reactive Protein Predicts Contrast-Induced Nephropathy and Long-Term Outcome After Coronary Angiography.
ANGIOLOGY(2017)
Abstract
We investigated whether high-sensitivity C-reactive protein (hsCRP) levels were associated with contrast-induced nephropathy (CIN) and long-term mortality after coronary angiography (CAG). Patients (N = 2133) undergoing CAG with preprocedural hsCRP were consecutively enrolled. High-sensitivity C-reactive protein was measured before angiography. Median follow-up was 2.3 years. The overall incidence of CIN was 2.77% (59 of 2133). There was a positive trend of hsCRP quartiles (Q) with rates of CIN: 0.9% for Q1 (<1.6 mg/L), 0.9% for Q2 (1.6-3.9 mg/L), 2.4% for Q3 (4.0-11.3mg/L), and 6.8% for Q4 (>11.3 mg/L; P < .05). The receiver operating characteristic (ROC) analysis showed that the cutoff point of hsCRP was 7.3 mg/L for predicting CIN with a 72.7% sensitivity and a 67.0% specificity (area under the curve [AUC] = 0.742, 95% confidence interval [CI] 0.672-0.810; P < .05). The predictive value of hsCRP was similar to the Mehran score for CIN (AUC(hsCRP) = 0.742 vs AUC(Mehran) = 0.801; P = .228). After adjustment for other potential risk factors, hsCRP >7.3 mg/L still was an independent predictor of CIN (odds ratio [OR] = 2.83, 95% CI: 1.44-5.58; P = .003). Furthermore, hsCRP >7.3 mg/L was associated with higher mortality (OR = 2.04, 95% CI: 1.30-3.19; P = .002).
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Key words
high-sensitivity C-reactive protein,contrast-induced nephropathy,coronary angiography,outcome,Mehran score
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