多巴酚丁胺心内膜自动检测技术对左室功能的研究

目的 探讨多巴酚丁胺心内膜自动检测技术（ＡＢＤ）测量左室功能的临床应用价值。方法 应用低剂量多巴酚丁胺心内膜超声自动检测技术对２３例二尖瓣病变虱和２７例心肌病患者的左室收缩和舒张功能进行了研究。结果 ＡＢＤ技术和二维超声测量的左室容积和射血分数无显著性差异;ＡＢＤ技术测量的Ａ组患者的左室收缩和舒张功能指标均低于Ｂ组患者。

Assessment of the Left Ventricular Function by Dobutamine Automatic Border Detection Technique

Purpose　To explore the value of clinicalapplication of dobutamine automatic border detection for measuring left ventricularfunction. Methods　The left ventricular systolic and diastolic functions werestudied by low-dose dobutamine echocardiography with automatic border detection(ABD)technique in 23 cases with mitral valvular diseases(group A)and 27 cases withcardiomyopathy(group B). Results　There were no significant difference in the leftventricular systolic or diastolic volume indexes,as well as ejection fractions between ABDand two-dimensional echocardiography(P>0.05).The parameters of left ventricular volumederived by ABD in group A were decreased than those in group B(P<0.05).After low-dosedobutamine infusion,EF peak filling rate(PFR),dv/dt were significantly increased in bothgroups(P<0.05),and rapid filling slop(RFS)and EDFV/LDFV were also increased in groupB(P<0.05). Conclusion　Dobutamine ABD technique can provide simple and accuratemethod for the estimation of left ventricular systolic and diastolic functions.