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紫绀型先天性心脏病体外循环对血小板膜受体的影响

隋波 尹格平 马永德 李训美

  【摘要】 目的 观察紫绀型先天性心脏病患儿心肺转流(CPB)期间血小板的灭活机制。方法 用流式细胞术测定33例紫绀型先天性心脏病患儿在CPB下行心内矫正术时的血小板膜受体CD62p和CD63的变化,同时与35例非紫绀型先天性心脏病患儿CPB 下行心内矫正术时的相同指标进行比较。结果 紫绀组与非紫绀组血小板计数分别由术前的(144.55± 39.76)×106/L、(272.46±59.96)×106/L降到术后的(132.65±89.2 5)×106/L,(180.37±44.93)×106/L。但紫绀组血小板膜受体CD62p和CD63 较非紫绀组增加明显,且两组主要指标比较有明显差异(P<0.05)。结论 CPB期间紫绀组的血小板膜受体CD62p和CD63大量被激活,但因血小板总数下降,出血倾向仍然明显。
  【关键词】 心脏缺损,先天性  心肺转流术  血小板  膜  受体

The Effect of Platelet Membrane Receptors During Cardiopulmonary Bypass in Patie nts with Cyanotic Congenital Heart Disease

 SUI Bo, YIN Geping, MA Yongde, et al.
Department of Anesthesia, Ji nan Military General Hospital, Jinan 250031

  【Abstract】 Objective To assess the effect of cardiopulmonary bypass(CPB) on platelet in patients with cyanotic congenital heart disease. Methods Platelet membrane receptors(PMR) CD62p and CD63 w ere measured with flow cytometry in 33 patients with cyanotic congenital heart d isease and 35 controls. Results Significant drop in platelet count was observed o n both groups after CPB. The platelet count dropped from pre-operative level of (144.55±39.76)×106/L to(132.65±89.25)×106/L post-operat ively in the cyanotic group and from(272.46±59.96)×106/L to(180.37 ±44.93)×106/L in the acyanotic group. Yet, the PMR CD62p and CD63 in t he cyanotic group increased significantly compared to the acyanotic group(P< 0.05). Conclusion PMR CD62p and CD63 are activated during CPB. Nevertheless, bleeding tendency still exists due to decrease in platelet count.
  【Key words】 Heart defects, congenital  Cardiopulmonary bypass  Blood platelets
Membranes  Receptors

  紫绀型先天性心脏病患儿心肺转流(CPB)体外循环中和其后出血的主要原因是血小板机能障碍,在CPB开始即出现出血时间延长、凝血机能缺陷。然而凝血机能缺陷的性质存在争论,有些研究提示血小板聚集减少[1],而有些研究提示血小板释放产生增加[2]。笔者用流式细胞术测定血小板膜受体CD62p和CD63在CPB中的变化过程,为临床治疗紫绀型先天性心脏病CPB术后出血倾

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