Objective To evaluate the effect of three-dimensional spot tracking technique on left ventricular systolic function in patients with severe aortic stenosis with normal ejection fraction.Methods A total of 80 patients with severe aortic stenosis diagnosed with normal ejection fraction between our hospital from July 2015 to May 2017 were selected as the case group,also selected in the same period in my hospital for physical examination of 80 patients as a control.The heart of the patient was scanned using a three-dimensional ultrasound spot technique,and the results were evaluated.Results The case group and the control group of patients with left ventricular end diastolic diameter[the case group(47.78±3.19)mm,the control group(47.73±2.59)mm],left ventricular end systolic diameter[the case group(27.05±2.15)mm,the control group(26.87±2.13)mm],left ventricular ejection fraction[the case group(60.49±1.96)％,the control group(60.57±2.02)％] data difference was not statistically significant (P＞0.05);Interventricular septal thickness [the case group (12.70±0.85)mm,the control group (7.83±0.84)mm],left ventricular posterior wall diastolic thickness [the case group (10.56±0.73)mm,the control group (7.17±0.69)mm] were higher than the control group;left ventricular global systolic strain patients [the case group(15.17±1.21)％,the control group (20.15± 1.17)％],left ventricular the overall radial strain [the case group (27.49±4.73)％,the control group(38.05±5.40)％],three-dimensional strain[the case group(32.55±4.77)％,the control group (41.97±4.50)％] were lower than the control group,left ventricular global circumferential strain[the case group (30.24±1.72)％,the control group (24.81±1.66)％] and left ventricular area strain [the case group (45.27 ± 1.91)％,the control group (41.47± 1.46)％] were higher than the control group (P＜0.05).The discriminant analysis of patients using conventional echocardiography and three-dimensional speckle tracking technique was 85.31％ and 100％.Conclusion Three-dimensional ultrasound spot tracking technology has a unique advantage in the normal ejection fraction of severe aortic stenosis in patients with left ventricular myocardial systolic function evaluation,you can distinguish between some patients and normal people,and the diagnosis and treatment of patients in this category is of great significance,it is worth to promote the clinical scope.%目的 探讨三维斑点追踪技术对射血分数正常的重度主动脉瓣狭窄患者左室心肌收缩功能的评价效果.方法 选择2015年7月到2017年5月在恩施州中心医院诊断为射血分数正常的重度主动脉瓣狭窄患者80例作为病例组,另外选择同时间段内在同院进行健康体检者80例作为对照,利用三维超声斑点技术对所有研究对象的心脏进行扫描并对结果进行评价.结果 病例组和对照组的左心室舒张末期内径[病例组(47.78±3.19)mm,对照组(47.73±2.59)mm]、左心室收缩末期内径[病例组(27.05±2.15)mm,对照组(26.87±2.13)mm]、左心室射血分数[病例组(60.49± 1.96)％,对照组(60.57±2.02)％]比较未见统计学差异(P＞0.05);室间隔厚度[病例组(12.70±0.85)mm,对照组(7.83±0.84)mm]、左室后壁舒张末期厚度[病例组(10.56±0.73)mm,对照组(7.17±0.69)mm]病例组高于对照组;病例组患者的左心室整体长轴应变[病例组(15.17±1.21)％,对照组(20.15±1.17)％]、左心室整体径向应变[病例组(27.49±4.73)％,对照组(38.05±5.40)％]、三维应变[病例组(32.55±4.77)％,对照组(41.97±4.50)％]低于对照组,左心室整体环向应变[病例组(30.24±1.72)％,对照组(24.81±1.66)％]、左心室整体面积应变[病例组(45.27±1.91)％,对照组(41.47±1.46)％]高于对照组,差异具有统计学意义(P＜0.05).利用常规心动图和三维斑点追踪技术数据进行判别分析,分类正确率分别为85.31％和100.00％.结论 三维超声斑点追踪技术对于射血分数正常的重度主动脉瓣狭窄患者左室心肌收缩功能的评价有独特的优势,可将这部分患者和健康人进行区分,对该类患者的诊治有着重大的意义,值得在临床范围内推广.
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