目的：探讨冠状动脉（冠脉）慢血流（SCF）与冠脉微循环的相关性，以及 SCF发生、发展的相关危险因素。方法：在接受冠脉造影的患者中，选择被诊断为SCF的32例为SCF组，冠脉血流正常和无明显狭窄病变的32例为对照组，分别记录和测定两组患者的一般资料和各项生化指标、高敏C反应蛋白（hs-CRP）、心肌梗死溶栓治疗临床试验（TIMI）血流帧数以及冠脉微循环阻力指数（IMR），分析各项指标与SCF的关系。结果：与对照组比较，SCF组患者的高密度脂蛋白胆固醇（HDL-C）和载脂蛋白-A1水平较低[（1.57±0.38） mmol/L vs（1.62±0.43）mmol/L，（1.41±0.31）mmol/L vs（1.57±0.38）mmol/L]；hs-CRP水平较高[（3.63±1.67）μg/mL vs （1.74±0.75）μg/mL]； IMR明显升高[（29.28±7.68）vs（24.94±6.67）]，差异均有统计学意义（P<0.05）。且IMR与TIMI血流帧数及hs-CRP呈正相关（r=0.766，P=0.019；r =0.565，P<0.01）。结论：（1）冠脉微循环功能障碍与SCF发生、发展呈相关性。（2）在冠脉微循环障碍中，炎症反应可能起到一定作用，HDL-C和载脂蛋白-A1水平的降低，可能也参与了冠脉微循环障碍的病理过程，从而在一定程度导致SCF。%Objective: To study the relationship between slow coronary lfow (SCF) and coronary microcirculatory dysfunction in relevant patients and to explore the risk factors for SCF development. Methods: Our research was conducted in 2 groups: SCF group, the patients with coronary angiography conifrmed diagnosis and Control group, the subjects with normal coronary lfow.n=32 in each group. The general information, blood levels of biochemical indicators, hs-CRP levels, TIMI lfow frame and the index of microcirculatory resistance (IMR) were examined, their relationships to SCF were analyzed. Results: Compared with Control group, the patients in SCF group showed the lower levels of HLL-C (1.57 ± 0.38) mmol/L vs (1.62 ± 0.43) mmol/L and Apo-A1 (1.41 ± 0.31) mmol/L vs (1.57 ± 0.38) mmol/L, while higher level of hs-CRP (3.63 ± 1.67) μg/mL vs (1.74 ± 0.75) μg/mL; SCF groups had increased IMR (29.28 ± 7.68) vs (24.94 ± 6.67), all P<0.05. IMR was positively related to TIMI lfow frame (r=0.766, P=0.019) and hs-CRP (r=0.565, P=0.000). Conclusion:①Microcirculatory dysfunction was related to SCF.②Inlfammatory reaction, decreased blood levels of HDL-C and Apo-A1 might be involved in pathological process of SCF.
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