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探讨心电图QT间期与变异型心绞痛患者室性心律失常的相关性.[方法]回顾性分析本院收治的74例变异型心绞痛患者临床资料,根据发作时与不发作时的校正QT间期,将患者分为观察组(QT间期缩短,n=34)和对照组(QT间期正常,n=40).比较两组室性期前收缩负荷、发生室速比例、QT值及治疗疗效.[结果]观察组室性期前收缩负荷、室速比例高于对照组,QT值、LVEF均低于对照组,差异有统计学意义(P<0.05).观察组治疗有效率为52.94%(18/34)明显低于对照组的80.00%(32/40),差异有统计学意义(χ2=6.141, P=0 .013<0 .05 ).采用Pearson线性相关分析显示,Q T间期缩短与变异型心绞痛患者室性心律失常的发生有显著相关性(r=0.46,P=0.035<0.05).[结论]变异型心绞痛发生QT间期缩短的患者,其发生室性期前收缩负荷和室速比例明显上升,同时其抗心律失常治疗的效果较差,临床工作者应根据相关心电图检查结果尽早给予及时有效的治疗.“,”Toexplorethecorrelationbetweenelectrocardiogram QTintervalandventricularar-rhythmiainpatientswithvariantanginapectoris.[Methods]Theclinicaldataof74patientswithvariantangina pectorisinourhospitalwereretrospectivelyanalyzed.AccordingtothecorrectedQTintervalbetweenattackand non-attack,thepatientsweredividedintoobservationgroup (shortenedQTinterval,n=34)andcontrolgroup (normalQTinterval,n=40).Theventricularprematuresystolicload,theproportionofventriculartachycardia, thevalueofQTandthetherapeuticeffectwerecomparedbetweenthetwogroups.[Results]Theproportionofpre-matureventricularsystolicloadandventriculartachycardiaintheobservationgroupwashigherthanthatinthe controlgroup,whilethevalueofQTandLVEFwerelowerthanthoseinthecontrolgroup (P<0.05).Theef-fectiverateoftheobservationgroupwas52.94% (18/34),whichwassignificantlylowerthanthatofthecontrol group80.00% (32/40).Therewasasignificantdifferencebetweenthetwogroups(χ2=6.141,P=0.013<0.05). PearsonlinearcorrelationanalysisshowedthatshortenedQTintervalwassignificantlycorrelatedwithventricular arrhythmiainpatientswithvariantanginapectoris(r=0.46,P=0.035<0.05).[Conclusion]Theproportionof prematureventricularsystolicloadandventriculartachycardiaincreasesignificantlyinpatientswithvariantangina withshortenedQTinterval,andtheeffectofantiarrhythmictherapyispoor.Cliniciansshouldgivetimelyandef-fectivetreatmentassoonaspossibleaccordingtotheresultsofrelevantelectrocardiogramexamination.