冠状动脉高度狭窄的冠心病患者侧支循环形成的相关因素Influential factors of coronary collateral circulation formation in patients with severe coronary artery stenosis
张文娟,万征,霍岩,林青,于向东,李永乐,徐绍鹏,王清
摘要(Abstract)：
目的观察相关因素对冠状动脉(冠脉)高度狭窄的冠心病患者侧支循环形成的影响。方法将111例经冠脉造影诊断1支或1支以上冠脉狭窄≥95%的冠心病患者(其中男性74例,女性37例,平均年龄63.8±9.9岁)按Werner等提出的侧支分级标准分为3组CC0组27例,CC1组45例,CC2组39例。于入院24h内采集晨起空腹(>6h)静脉血测血清脂蛋白,1周内完成超声心动图检查。结果(1)血清脂蛋白水平CC0和CC1组血清总胆固醇水平(4.81±0.88mmol/L和4.80±1.02mmol/L)均明显高于CC2组的4.23±0.71mmol/L(P<0.05;P<0.01);CC0组血清总胆固醇水平高于CC1组,但差异无统计学意义(P>0.05)。CC0组血清高密度脂蛋白胆固醇水平(1.22±0.28mmol/L)明显低于CC1组的1.38±0.34mmol/L和CC2组的1.40±0.24mmol/L(P<0.05和P<0.05);CC1和CC2组间差异无统计学意义。(2)冠脉病变程度①CC1组右冠脉闭塞率(62.2%)显著高于CC0组的33.3%和CC2组的43.6%(P<0.01);CC0与CC2组间差异无统计学意义。②CC1和CC2组无闭塞率(2.2%和10.3%)明显小于CC0组的25.9%(P<0.01);CC1和CC2组间差异无统计学意义。③CC0组多支闭塞率(11.1%)明显低于CC1组的26.6%和CC2组的38.5%(P<0.01);CC1与CC2组间多支闭塞率差异无统计学意义。④病变支数和优势冠脉三组间分布差异无统计学意义。(3)左心室射血分数两两组间比较CC2组(60.31%±12.73%)显著高于CC1组的53.38%±12.95%(P<0.05)。(4)等级回归模型随左心室射血分数、高密度脂蛋白胆固醇水平和闭塞支数的增加,以及总胆固醇水平减低,患者具有良好侧支循环的可能性增加。结论侧支循环等级增高的几率随闭塞支数而增加,而血清总胆固醇水平高和高密度脂蛋白胆固醇水平低则不利于良好侧支循环的建立。在血管病变程度相当时,良好的侧支循环可以有效地保护左心室功能。
关键词(KeyWords)： 冠状动脉狭窄;侧支循环;脂蛋白类
基金项目(Foundation):
作者(Author): 张文娟,万征,霍岩,林青,于向东,李永乐,徐绍鹏,王清
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