动脉硬化危险基因型与心肌梗死后冠状动脉事件复发

来源 :世界核心医学期刊文摘(心脏病学分册) | 被引量 : 0次 | 上传用户:bleachff
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The association of a group of prespecified atherosclerotic risk genotypes with recurrent coronary events(coronary-related death, nonfatal myocardial infarction, or unstable angina) was investigated in a cohort of 1,008 patients after infarction during an average follow-up of 28 months. We used a carrier-ship approach with time-dependent survivorship analysis to evaluate the average risk of each carried genotype. Contrary to expectation, the hazard ratio for recurrent coronary events per carried versus noncarried genotype was 0.89(95%confidence interval 0.80 to 0.99, p=0.03) after adjustment for relevant genetic, clinical, and environmental covariates. This hazard ratio, derived from the 7 prespecified genotypes, indicated an average 11%reduction in the risk of recurrent coronary events per carried versus noncarried genotype. At 1 year after hospital discharge, the cumulative probability of recurrent coronary events was 26%in those who carried ≤1, 20%for those with 2 to 4, and 13%for those with ≥5 of these genotypes(p=0.02). This unexpected risk reversal is a likely consequence of changes in the mix of risk factors in pre-and postinfarction populations. In conclusion, this under appreciated, population-based, risk-reversal phenomenon may explain the inconsistent associations of genetic risk factors with outcome events in previous reports involving coronary populations with different risk attributes. The association of a group of prespecified atherosclerotic risk genotypes with recurrent coronary events (coronary-related death, nonfatal myocardial infarction, or unstable angina) was investigated in a cohort of 1,008 patients after infarction during an average follow-up of 28 months. We used Contrary to expectation, the hazard ratio for recurrent coronary events per worn versus noncarried genotype was 0.89 (95% confidence interval 0.80 to 0.99, p = 0.03) after adjustment for relevant genetic, clinical, and environmental covariates. This hazard ratio, derived from the 7 prespecified genotypes, an average 11% reduction in the risk of recurrent coronary events per worn versus noncarried genotype. At 1 year after hospital discharge , the cumulative probability of recurrent coronary events was 26% in those who carried ≤ 1, 20% for those with 2 to 4, and 13% for those with ≥5 of these genotypes (p = 0.02). This result is likely to change in the mix of risk factors in pre-and postinfarction populations. In conclusion, this under appreciated, population-based, risk-reversal may may the inconsistent associations of genetic risk factors with outcome events in previous reports involving coronary populations with different risk attributes.
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