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冠状动脉慢血流与冠状动脉微循环障碍的相关性研究

2016-07-26殷培明王曙光张爱元

中国循环杂志 2016年6期

殷培明,王曙光,张爱元



冠状动脉慢血流与冠状动脉微循环障碍的相关性研究

殷培明,王曙光,张爱元

摘要

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。

关键词 冠状动脉疾病 ;冠状动脉循环;血流速度;炎症

Objective: To study the relationship between slow coronary flow (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 confirmed diagnosis and Control group, the subjects with normal coronary flow. n=32 in each group. The general information, blood levels of biochemical indicators, hs-CRP levels, TIMI flow 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 flow frame (r=0.766, P=0.019) and hs-CRP (r=0.565, P=0.000).

Conclusion:① Microcirculatory dysfunction was related to SCF.②Inflammatory reaction, decreased blood levels of HDL-C and Apo-A1 might be involved in pathological process of SCF.

Key words Coronary artery disease; Coronary circulation; Blood feow velocity; Inflammation

(Chinese Circulation Journal, 2016,31:555.)

随着冠状动脉(冠脉)造影的广泛开展,冠脉慢血流(slow coronary flow, SCF)现象在临床中的检出率不断升高,而到目前,对于SCF发生、发展的确切原因,仍无明确的统一定论;但微循环功能障碍是其主要原因之一已达成共识。目前对微循环功能的评价措施主要有两种:一是冠脉血流储备(Coronary flow reserve score,CFR);二是冠脉微循环阻力指数(index of microcirculatory resistance,IMR)。CFR定义是冠脉最大充盈时血流与基础状态血流之比[1],主要测量>400 μm的心外膜大血管,因其对心外膜血管和异常的微循环两者带来的血流影响无法区别,且易受干扰,实用性、重复性差,现今已少用。……

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