Changes of mean platelet volume, leukocyte and neutrophil counts in ST-segment elevation myocardial infarction patients treated with primary percutaneous coronary intervention and their relationship with coronary flow
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摘要: 目的:观察接受直接经皮冠状动脉(冠脉)介入(PPCI)治疗的ST段抬高性心肌梗死(STEMI)患者入院时平均血小板体积(MPV)、白细胞计数(LC)和中性粒细胞计数(NC)等的变化及其与冠脉血流的关系。方法:选择179例接受PPCI治疗的STEMI患者(STEMI组),入院时测定MPV、LC、NC和血生化等指标,阅读冠脉影像资料,评估梗死相关动脉行PPCI前后的TIMI血流分级,计算梗死相关动脉行PPCI后校正TIMI血流帧数计数(CTFC)。同期冠脉造影等确诊的107例稳定型心绞痛患者作为对照(稳定型心绞痛组)。另外,根据PPCI前梗死相关动脉是否有自发性开通,将STEMI组分为PPCI前梗死相关动脉血流自发性开通亚组(50例)和无自发性开通亚组(129例);根据梗死相关动脉行PPCI后的冠脉血流,将STEMI组分为TIMI 3级亚组(148例)和未达TIMI 3级亚组(31例)。结果:与稳定型心绞痛组比较,STEMI组MPV、LC和NC显著升高(均P<0.01),血小板压积显著降低(P<0.05)。STEMI组内各亚组间比较显示,与行PPCI前梗死相关动脉自发性开通亚组比较,无自发性开通亚组MPV、LC和NC显著升高,血小板计数显著降低(均P<0.05);与行PPCI后梗死相关动脉血流达TIMI 3级亚组比较,未达TIMI 3级亚组LC、NC和血小板分布宽度显著升高(均P<0.05),MPV亦明显升高(P<0.01)。多元线性回归分析显示,MPV和NC是梗死相关动脉行PPCI后CTFC的独立影响因素。结论:STEMI患者MPV、LC和NC显著增加,MPV、LC和NC与梗死相关动脉行PPCI前后血流的受损程度有密切关系。
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关键词:
- ST段抬高性心肌梗死 /
- 平均血小板体积 /
- 白细胞计数 /
- 中性粒细胞计数 /
- TIMI血流
Abstract: Objective: To assess the changes of mean platelet volume(MPV), leukocyte count(LC) and neutrophil count(NC) in ST-segment elevation myocardial infarction(STEMI) patients treated with primary percutaneous coronary intervention(PPCI) and their relationship with coronary flow. Method: A total of 179 STEMI patients undergoing PPCI were enrolled.MPV, LC, NC and biochemical parameters were measured on admission.The TIMI flow of the infarct-related artery was evaluated before and after PPCI, and the infarct-related artery's corrected thrombolysis in myocardial infarction frame count(CTFC) was also calculated.One hundred and seven in-hospital patients with stable angina pectoris were taken as control. Result: Compared with patients with stable angina pectoris, MPV, LC and NC in STEMI patients were increased significantly(all P<0.01) and plateletcrit was decreased markedly(P<0.05).If the infarct-related artery's coronary flow was TIMI grade 1 to 3 before PPCI, it was defined as spontaneous reperfusion.STEMI patients without spontaneous reperfusion had markedly increased MPV, LC and NC and dominantly decreased platelet counts than those with spontaneous reperfusion(all P<0.05).After PPCI, STEMI patients whose infarct-related artery's TIMI flow was less than grade 3 had significantly elevated LC, NC and platelet distribution width(all P<0.05) and MPV(P<0.01) than those with TIMI flow grade 3.Multiple regression analysis showed that MPV or NC was the independent predictor for the infarct-related artery's CTFC. Conclusion: MPV, LC and NC on admission are increased in patients with STEMI, and they are independently associated with coronary flow. -
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