Primary coronary revascularization by means of percutaneous coronary intervention(PCI)is a highly effective treatment of acute myocardial infarction re-establishing coronary perfusion and stopping the ongoing necrosis...Primary coronary revascularization by means of percutaneous coronary intervention(PCI)is a highly effective treatment of acute myocardial infarction re-establishing coronary perfusion and stopping the ongoing necrosis in the dependent myocardium.Single-photon emission computed tomography(SPECT)is the most widely used modality assessing myocardial salvage as the difference between the acute perfusion defect before intervention and the remaining scar size measured in a second scan several days after the event.SPECT allows quantification of area at risk(AAR)and final infarct size(FIS)by tracer injection prior to revascularization and after 1 month,respectively.SPECT provides the most validated measure of myocardial salvage and has been utilized in multiple randomizedclinical trials.However,SPECT is logistically challenging,expensive,and includes radiation exposure.More recently,a large number of studies have suggested that cardiac magnetic resonance(CMR)can determine salvage in a single examination by combining measures of myocardial oedema in the AAR exposed to ischaemia reperfusion with FIS quantification by late gadolinium enhancement.展开更多
目的观察并比较电针心包经和心经抗急性心肌缺血的作用。方法将SD大鼠随机分为正常对照组、伪手术组、模型组、肺经组、心经组、心包经组。采用冠状动脉左前降支结扎法复制大鼠急性心肌缺血模型。肺经组选取"太渊(LU9)—列缺(LU7)&...目的观察并比较电针心包经和心经抗急性心肌缺血的作用。方法将SD大鼠随机分为正常对照组、伪手术组、模型组、肺经组、心经组、心包经组。采用冠状动脉左前降支结扎法复制大鼠急性心肌缺血模型。肺经组选取"太渊(LU9)—列缺(LU7)"段,心包经组选取"大陵(PC7)—内关(PC6)"段,心经组选取"神门(HT7)—通里(HT5)"段。观察并比较各组大鼠心电图J点、T波振幅及心肌梗死面积。结果①与伪手术组比较,模型组结扎即刻,结扎72 h J点振幅、ΔJ,结扎72 h T波值、ΔT值均显著增大(P<0.01);与模型组、肺经组比较,心经组与心包经组结扎72 h J点值、ΔJ值、T波值、ΔT值均显著减小(P<0.05,或P<0.01)。②与伪手术组比较,模型组左心室梗死面积、梗死百分比显著增加(P<0.01)。与模型组、肺经组比较,心经组与心包经组左心室梗死面积、梗死百分比显著降低(P<0.01)。结论电针心经、心包经可明显改善急性心肌缺血大鼠心电图J点、T波的异常变化,减少心肌梗死面积,从而改善急性心肌缺血;两者在作用方向和作用程度上具有相似性。展开更多
文摘Primary coronary revascularization by means of percutaneous coronary intervention(PCI)is a highly effective treatment of acute myocardial infarction re-establishing coronary perfusion and stopping the ongoing necrosis in the dependent myocardium.Single-photon emission computed tomography(SPECT)is the most widely used modality assessing myocardial salvage as the difference between the acute perfusion defect before intervention and the remaining scar size measured in a second scan several days after the event.SPECT allows quantification of area at risk(AAR)and final infarct size(FIS)by tracer injection prior to revascularization and after 1 month,respectively.SPECT provides the most validated measure of myocardial salvage and has been utilized in multiple randomizedclinical trials.However,SPECT is logistically challenging,expensive,and includes radiation exposure.More recently,a large number of studies have suggested that cardiac magnetic resonance(CMR)can determine salvage in a single examination by combining measures of myocardial oedema in the AAR exposed to ischaemia reperfusion with FIS quantification by late gadolinium enhancement.
文摘目的观察并比较电针心包经和心经抗急性心肌缺血的作用。方法将SD大鼠随机分为正常对照组、伪手术组、模型组、肺经组、心经组、心包经组。采用冠状动脉左前降支结扎法复制大鼠急性心肌缺血模型。肺经组选取"太渊(LU9)—列缺(LU7)"段,心包经组选取"大陵(PC7)—内关(PC6)"段,心经组选取"神门(HT7)—通里(HT5)"段。观察并比较各组大鼠心电图J点、T波振幅及心肌梗死面积。结果①与伪手术组比较,模型组结扎即刻,结扎72 h J点振幅、ΔJ,结扎72 h T波值、ΔT值均显著增大(P<0.01);与模型组、肺经组比较,心经组与心包经组结扎72 h J点值、ΔJ值、T波值、ΔT值均显著减小(P<0.05,或P<0.01)。②与伪手术组比较,模型组左心室梗死面积、梗死百分比显著增加(P<0.01)。与模型组、肺经组比较,心经组与心包经组左心室梗死面积、梗死百分比显著降低(P<0.01)。结论电针心经、心包经可明显改善急性心肌缺血大鼠心电图J点、T波的异常变化,减少心肌梗死面积,从而改善急性心肌缺血;两者在作用方向和作用程度上具有相似性。
