Coronary calcium score predicts cardiovascular mortality in diabetes: diabetes heart study.

Coronary calcium score predicts cardiovascular mortality in diabetes: diabetes heart study.
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DOI:
10.2337/dc12-1548
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发表时间:
2013-04
期刊:
影响因子:
16.2
通讯作者:
Bowden DW
Bowden DW
中科院分区:
医学1区
文献类型:
--
作者:
Agarwal S;Cox AJ;Herrington DM;Jorgensen NW;Xu J;Freedman BI;Carr JJ;Bowden DW

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在2型糖尿病(T2DM)中,冠状动脉钙(CAC)是否提供了Framingham风险评分(FRS)因素之外的心血管疾病(CVD)死亡率的额外信息尚不清楚。在糖尿病心脏研究中,共有1123名年龄34-86岁的T2DM参与者,平均随访7.4年,使用CAC基线计算机断层扫描(0-9、10-99、100-299、300-999和≥1000)进行分离。采用Logistic回归检验CAC与心血管疾病死亡率之间的相关性,并比较有无CAC的曲线下面积(AUC)。净再分类改善(NRI)将FRS(模型1)与FRS+CAC(模型2)进行比较,使用7.4年CVD死亡率风险类别为0%至<7%,7%至<20%和≥20%。总体而言,8%的参与者在随访期间死于心血管疾病。在多变量分析中,以CAC 0-9为参照组的CVD死亡率的比值比(95% CI)为:CAC 10-99: 2.93 (0.74-19.55);Cac 100-299: 3.17 (0.70-22.22);Cac 300-999: 4.41(1.15-29.00);CAC≥1000:11.23(3.24-71.00)。无CAC的AUC (95% CI)为0.70(0.67-0.73),有CAC的AUC为0.75 (0.72-0.78),NRI为0.13(0.07-0.19)。在2型糖尿病患者中,CAC可预测心血管疾病死亡率,并对参与者进行有意义的重新分类,提示在心血管疾病风险增加的人群中作为风险分层工具的临床应用。
In type 2 diabetes mellitus (T2DM), it remains unclear whether coronary artery calcium (CAC) provides additional information about cardiovascular disease (CVD) mortality beyond the Framingham Risk Score (FRS) factors. A total of 1,123 T2DM participants, ages 34–86 years, in the Diabetes Heart Study followed up for an average of 7.4 years were separated using baseline computed tomography scans of CAC (0–9, 10–99, 100–299, 300–999, and ≥1,000). Logistic regression was performed to examine the association between CAC and CVD mortality adjusting for FRS. Areas under the curve (AUC) with and without CAC were compared. Net reclassification improvement (NRI) compared FRS (model 1) versus FRS+CAC (model 2) using 7.4-year CVD mortality risk categories 0% to <7%, 7% to <20%, and ≥20%. Overall, 8% of participants died of cardiovascular causes during follow-up. In multivariate analysis, the odds ratios (95% CI) for CVD mortality using CAC 0–9 as the reference group were, CAC 10–99: 2.93 (0.74–19.55); CAC 100–299: 3.17 (0.70–22.22); CAC 300–999: 4.41(1.15–29.00); and CAC ≥1,000: 11.23 (3.24–71.00). AUC (95% CI) without CAC was 0.70 (0.67–0.73), AUC with CAC was 0.75 (0.72–0.78), and NRI was 0.13 (0.07–0.19). In T2DM, CAC predicts CVD mortality and meaningfully reclassifies participants, suggesting clinical utility as a risk stratification tool in a population already at increased CVD risk.
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