欢迎来到天天文库
浏览记录
ID:37124215
大小:1.05 MB
页数:35页
时间:2019-05-18
《静息状态下应用组织多普勒评价冠心病患者心脏局部功能》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、·中文论著摘要·静息状态下应用组织多普勒评价冠心病患者心脏局部功能目的在静息状态下应用组织多普勒成像技术的多种测量指标评价冠心病患者的心脏局部功能,并探讨局部功能测定在冠心病诊断中的价值。方法对47名以胸痛为主要症状的住院患者进行组织多普勒超声检查,测定左室l6个节段的收缩峰速度(Sm)、舒张早期峰速度(Em)、舒张晚期峰速度(Am)、等容收缩时间(IVCT)和等容舒张时间(IVRT)。所有患者同时行冠状动脉造影检查,至少有一支直径狭窄≥50%的冠状动脉则诊断冠心病。规定直径狭窄≥50%且<90%的冠状动脉支配节段为轻度病变节段,
2、直径狭窄≥90%的冠状动脉支配节段为重度病变节段,其余节段为非病变节段。结果:日木冠脉病变对左室射血分数和E/A比值没有显著影响。与非病变节段相比,病变节段的速度指标Sm、Em和Em/Am下降,时间指标IVCT和IVRT延长。如果以至少存在三个节段的Sm<2.50cm/s且IVRT>87ms作为诊断冠心病的标准,则该标准诊断冠心病的敏感度为79.4%,特异度为84.6%,阳性预测值为93.1%,阴性预测值为61.1%。结论静息状态下,冠心病患者病变部位的心脏局部功能变化体现在收缩和舒张运动速度的下降和等容运动时间的延长,综合分析心
3、脏节段运动速度和运动时间有助于冠心病的诊断。关键词冠心病;组织多普勒;心功能;局部;静息2●英文论著摘要EvaluationofRegionalCardiacFunctionforPatientswithCoronaryHeartDiseasebyTissueDopplerImaginginRestStateObjectiveToevaluatetheregionalcardiacfunctionforpatientswithcoronaryheartdisease(CHD)withmultipletissmeDopplerima
4、ging(TDI)parametersinreststateandtodiscussthevalueofregionalcardiacfunctionindiagnosingCHD.MethodForty-seveninpatientswithchiefcomplaintofchestpainunderwentTDIexamination.Maximumsystolicvelocity(Sm),maximumearlydiastolicvelocity(Em),maximumlatediastolicvelocity(Am),is
5、ovoluminaleontractiontime(IVCT)andisovoluminalrelaxationtime(IVRT)ofsixteensegmentsofleftventricleweremeasured.Allthepatientsunderwentcoronaryangiography(CAG)atthesametime.CHDwasdiagnosedbyatleastonecoronaryarterywithnolessthanfiftypercent3diametricstenosis.Segmentsdo
6、minatedbycoronaryarterywithfiftytoninetyandmorethanninetypercentstenosisweremoderateandseverelesionsegmentsrespectively.Otherswerenon—lesionsegments.ResultsNoobviousinfluenceswereobservedinleftventricularejectionfraction(LVEF)andE/Aratioindifferentcoronarylesions.Comp
7、aredwithnon—lesionsegments,velocityparametersSm,EmandEra/Amoflesionsegmentsdecreased.andtimeparametersIVCTandIVRTprolonged.IfsettingacriterionthatnolessthanthreesegmentswithSm<2.50cm/sandIVRT>87msforCHDdiagnosis,thesensitivity,specificity,positivepredictivevalueandneg
8、ativepredictivevaluewere79.4%,84.6%,93.1%and61.1%.ConclusionsInreststate,regionalcardiacfunctionoflesionsegmentsinCHDpatient
此文档下载收益归作者所有