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Impact of C-Reactive Protein on In-Stent Restenosis A Meta-Analysis
Impact of C-Reactive Protein on In-Stent Restenosis A Meta-Analysis TEXAS HEART INSTITUTE JOURNAL Li, J., Ren, Y., Chen, K., Yeung, A. C., Xu, B., Ruan, X., Yang, Y., Chen, J., Gao, R. 2010; 37 (1): 49-57Abstract
We sought to evaluate the impact of C-reactive protein (CRP) levels on in-stent restenosis after percutaneous coronary intervention.The plasma level of CRP is considered a risk predictor for cardiovascular diseases. However, the relationship between CRP and in-stent restenosis has been a matter of controversy. Meta-analysis reduces variability and better evaluates the correlation.We performed a systemic search for literature published in March 2008 and earlier, using MEDLINE(R), the Cochrane clinical trials database, and EMBASE(R). We also scanned relevant reference lists and hand-searched all review articles or abstracts from conference reports on this topic. Of the 245 studies that we initially searched, we chose 9 prospective observational studies (1,062 patients).Overall, CRP concentration was higher in patients who experienced in-stent restenosis. The weighted mean difference in CRP levels between the patients with in-stent restenosis and those without was 1.67, and the Z-score for overall effect was 2.12 (P=0.03). Our subgroup analysis that compared patients with stable and unstable angina showed a weighted mean difference in the CRP levels of 2.22 between the patients with and without in-stent restenosis, and the Z-score for overall effect was 2.23 (P=0.03) in 5 studies of unstable-angina patients. There was no significance in 4 studies of stable-angina patients.In spite of significant heterogeneity across the studies, our meta-analysis suggests that preprocedurally elevated levels of CRP are associated with greater in-stent restenosis after stenting and that this impact appears more prominent in unstable-angina patients.
View details for Web of Science ID 000274555100010
View details for PubMedID 20200627
View details for PubMedCentralID PMC2829784