JACC:CMD作为肥胖患者的心血管风险指标更简便

2018-08-19 国际循环编辑部 国际循环

除体重指数(BMI)外,肥胖患者还存在其他需鉴别的心血管危险因素,这些患者可能会或不会考虑进行减重手术。

除体重指数(BMI)外,肥胖患者还存在其他需鉴别的血管危险因素,这些患者可能会或不会考虑进行减重手术。冠状动脉微血管功能障碍(CMD)为冠状动脉微血管发生的结构或功能失调性疾病,最终导致患者冠状动脉血流储备(CFR)受损,其不良事件风险独立于传统危险因素。近日,JACC发表一项最新研究探讨了肥胖、CMD和不良结局的关系。

研究共计纳入827例患者,其冠状动脉疾病评估中,心脏正电子发射断层扫描显示正常灌注,中位随访5.6年,不良事件包括因心肌梗死或心力衰竭导致的死亡和住院。

结果,可观察到BMI和CFR呈倒置的独立J形曲线,因此,肥胖患者中CFR随BMI的增加呈线性下降(校正后P<0.0001)。校正分析中,CFR(而非BMI)与不良事件独立相关(CFR降低1-U,校正HR=1.95;95%CI:1.41~2.69;P<0.001;BMI增加10-U,校正HR=1.20;95%CI:0.95~1.50;P=0.125)和改进模型判别(C指数为0.71~0.74)。在肥胖患者中,CFR受损的个体表现出更高的校正事件发生率(5.7% vs. 2.6%;P=0.002),即使目前没有达到减重手术适应证的人也同样(6.4% vs. 2.6%;P=0.04)。

因此,通过对该研究受试者的检测发现,CMD与BMI升高和不良事件独立相关,并且是比BMI和传统危险因素更易辨别的危险因素。相比目前的风险指标,CFR在肥胖患者的管理中更为方便。



原始出处:
Navkaranbir S. Bajaj, Michael T. Osborne, Ankur Gupta, et al. Coronary Microvascular Dysfunction and Cardiovascular Risk in Obese Patients. JACC. Volume 72, Issue 7, August 2018.

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    2019-01-15 hbwxf
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    2018-08-20 太阳系小猪

    控制体重不仅能降低卒中风险,还能降低心血管病风险

    0

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