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著者: Sumeet Subherwal, Richard G Bach, Anita Y Chen, Brian F Gage, Sunil V Rao, L Kristin Newby, Tracy Y Wang, W Brian Gibler, E Magnus Ohman, Matthew T Roe, Charles V Pollack, Eric D Peterson, Karen P Alexander
雑誌名: Circulation. 2009 Apr 14;119(14):1873-82. doi: 10.1161/CIRCULATIONAHA.108.828541. Epub 2009 Mar 30.
Abstract/Text
BACKGROUND: Treatments for non-ST-segment-elevation myocardial infarction (NSTEMI) reduce ischemic events but increase bleeding. Baseline prediction of bleeding risk can complement ischemic risk prediction for optimization of NSTEMI care; however, existing models are not well suited for this purpose.
METHODS AND RESULTS: We developed (n=71 277) and validated (n=17 857) a model that identifies 8 independent baseline predictors of in-hospital major bleeding among community-treated NSTEMI patients enrolled in the Can Rapid risk stratification of Unstable angina patients Suppress ADverse outcomes with Early implementation of the ACC/AHA guidelines (CRUSADE) Quality Improvement Initiative. Model performance was tested by c statistics in the derivation and validation cohorts and according to postadmission treatment (ie, invasive and antithrombotic therapy). The CRUSADE bleeding score (range 1 to 100 points) was created by assignment of weighted integers that corresponded to the coefficient of each variable. The rate of major bleeding increased by bleeding risk score quintiles: 3.1% for those at very low risk (score < or = 20); 5.5% for those at low risk (score 21-30); 8.6% for those at moderate risk (score 31-40); 11.9% for those at high risk (score 41-50); and 19.5% for those at very high risk (score >50; P(trend) <0.001). The c statistics for the major bleeding model (derivation=0.72 and validation=0.71) and risk score (derivation=0.71 and validation=0.70) were similar. The c statistics for the model among treatment subgroups were as follows: > or = 2 antithrombotics=0.72; <2 antithrombotics=0.73; invasive approach=0.73; conservative approach=0.68.
CONCLUSIONS: The CRUSADE bleeding score quantifies risk for in-hospital major bleeding across all postadmission treatments, which enhances baseline risk assessment for NSTEMI care.
PMID 19332461 Circulation. 2009 Apr 14;119(14):1873-82. doi: 10.1161/CIRCULATIONAHA.108.828541. Epub 2009 Mar 30.
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