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1、冠狀動脈病變嚴(yán)重程度、病變位置及冠心病介入治療對ＱＴ離散度的影響摘要：探討冠狀動脈病變嚴(yán)重程度、病變位置及冠心病介入治療對ＱＴ離散度(QTd)及校正ＱＴ離散度（QTcd）的影響。入選159例已行冠脈造影術(shù)且心電圖及臨床資料完整的病例，按如下進行分組：（1）按病變狹窄程度分組：①無狹窄組，冠脈造影示病變狹窄<50%，為31例；②輕度狹窄組，冠脈造影示病變狹窄≥50%且<70%，為54例；③重度狹窄組，冠脈造影示病變狹窄≥70%，為74例。（2）根據(jù)病變位置分組：①前降支組，為45例；②回旋支組，為
2、37例；③右冠脈組，為46例。（3）根據(jù)介入治療前后分組為：①術(shù)前組，為99例；②術(shù)后組，為99例。觀察冠狀動脈病變狹窄程度、病變位置及介入治療對QTd及QTcd的影響。結(jié)果：冠脈狹窄≥70%對QTd及QTcd影響明顯，p<0.05，而冠脈狹窄<70%對QTd及QTcd無明顯影響，p>0.05；冠脈病變所處位置對QTd及QTcd無明顯影響，p>0.05；介入治療前后QTd及QTcd變化明顯，p<0.05，介入治療術(shù)后與無狹窄組相比，QTd及QTcd無明顯差異，p>0.05
3、。結(jié)論：冠脈病變所出位置對QTd及QTcd無影響，病變嚴(yán)重程度及介入治療對QTd及QTcd影響明顯。關(guān)鍵詞：冠狀動脈造影心電圖QT離散度9YUANYi-qiangLIUHuai-lingMAYe-xin,etal.TheInfluenceofTheStenoses、LocationandInterventionofCoronaryArteryDisease(CAD)onQTDispersion（QTd）andcorrectedQTd(QTcd).Toinvestigatetheinfluenceofsten
4、osis、locationandinterventionofCADonQTdandQTcd.159patients,whowereperformedcoronaryangiography,withcompleteclinicalandECGdata,weredividedintogroupsasfollow:(1)Groupsdivivdedintoinaccordwithstenoses:①Nostenosesgroup,stenoses<50%,31cases;②Lightstenosesgoup
5、,stenoses≥50%and<70%,54cases;③Severestenosesgroup,stenoses≥70%,74cases.(2)GroupsdividedintoinaccordwiththelocationofCAD:①Leftanteriordescendinggroup,45cases;②Leftcircumflexgroup,37group;③Rightcoronarygroup,46cases.(3)Groupsdividedintoinaccordwithinterve
6、ntiontime:①Beforeinterventiongroup,99cases;②Afterinterventiongroup,99cases.Investigatedtheinfluenceofstenoses、locationandinterventionofCADonQTdandQTcd.Results:Severestenoses(≥70%)significantlyinfluencedQTdandQTcd,p<0.05,andlightstenoses(≥50%and<70%)d
7、idn’tsignificantlyinfluenceQTdandQTcd,p>0.05;ThelocationofCADdidn’9tsignificantlyinfluenceQTdandQTcd,p>0.05.InterventionsignificantlyinfluencedQTdandQTcd,contrastedbeforewithafteroperation,p<0.05,andcontrastedafteroperationwithnostenosesgroup,p>
8、;0.05.Conclusion:SeverestenosesandinterventionsignificantlyinfluencedQTdandQTcd,andthelocationhardlyinfluencedQTdandQTcd.KeywordsCoronaryAngiographyElectrocardiogramQTDispersionQT離散度(QTd)是近年來發(fā)展起來的一項預(yù)測心臟復(fù)極同步的新
