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目的:探讨利用多普勒超声检测心肌炎小儿左室舒张功能的心动图异常情况。方法:随即抽取56例小儿心肌炎患儿为观察组,并以54例健康儿童为对照组,比较两组心肌回声异常、室壁运动异常、心律失常、室壁厚度改变和心腔扩大发生率以及心动图影像图结果;采用多普勒超声检查所有儿童左室舒张功能,记录观察组二尖瓣AT/DT值、二尖瓣A峰值血流速度(PFVA)值、二尖瓣口血流频谱比值(A/E)以及左室等容舒张时间(IRT),并比较心动图结果。结果:观察组56例患儿中有21例心肌回声异常、13例室壁运动异常、26例心律失常、16例室壁厚度改变及24例心腔扩大,均显著高于对照组儿童(P<0.01),观察组AT、DT值和PFVA显著升高、PFVE平均值显著降低(P<0.01)、A/E显著增大(P<0.01)及IRT平均值显著延长(P<0.01)。结论:多普勒超声心动图检测左室舒张功能可应用于小儿心肌炎诊断,可在临床上大量应用。
Objective: To explore the use of Doppler echocardiography in children with left ventricular diastolic dysfunction cardiogram abnormalities. Methods: Fifty-six infants with pediatric myocarditis were randomly divided into observation group and 54 healthy children as control group. The changes of myocardial echocardiogram, ventricular wall motion, arrhythmia, ventricular wall thickness and the incidence of cardiac enlargement were compared between the two groups The left ventricular diastolic function was examined by Doppler echocardiography. The mitral AT / DT value, mitral A peak flow velocity (PFVA), mitral valve flow rate Ratio (A / E) and left ventricular isovolumic relaxation time (IRT), and compare the results of the cardiogram. Results: There were 21 cases of myocardial echo abnormality, 13 cases of wall motion abnormality, 26 cases of arrhythmia, 16 cases of wall thickness change and 24 cases of cardiac chamber enlargement in 56 cases of observation group, which were significantly higher than those of control group (P (P <0.01). AT, DT and PFVA in the observation group were significantly higher than those in the control group (P <0.01). The average value of PFVE was significantly lower (P <0.01). Conclusion: Doppler echocardiography to detect left ventricular diastolic function can be used in the diagnosis of pediatric myocarditis, which can be widely used clinically.