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目的探讨儿童风湿性心脏炎超声心动图价值。方法 6 5例风湿性心脏炎 ,采用彩色多普勒超声诊断仪测量 ,计算心博量 ( SV)、心输出量 ( CO)、射血分数 ( EF )、左室短轴缩短率 ( FS)等 ,并与对照组比较。结果 6 5例患儿中 92 .3%出现心脏扩大 ,阳性检出率高于临床及 X线 (分别为 81.5 %和 49.2 % ) ( P<0 .0 1)。 92 .3%的患儿有瓣膜改变 ,超声波检查对主动脉瓣返流的检出率较听诊提高 2 0 0 %( P<0 .0 1)。心功能 ～ 级组心输出量、射血分数、FS与正常组比较无差异 ( P>0 .0 5 ) ,而心博量有差异 ;( P<0 .0 5 )心功能 级组与正常组比较均有差异 ( P<0 .0 1)。结论 1发生心力衰竭后 ,心脏泵功能未发生改变时 ,左室收缩功能不低于正常 ,但心搏量降低。心功能 并出现二尖瓣狭窄时左室收缩功能受损。 2超声波对心脏扩大、瓣膜返流、心包积液等较临床及 X线具有较高检出率
Objective To investigate the value of echocardiography in children with rheumatic carditis. Methods Sixty-five patients with rheumatic carditis were enrolled in this study. Cardiac output (SV), cardiac output (CO), ejection fraction (EF), left ventricular fractional shortening (FS) Etc., and compared with the control group. Results 92.5% of the 65 cases had enlarged heart, the positive rate was higher than that of clinical and X-ray (81.5% and 49.2% respectively) (P <0.01). 92.3% of children had valve changes, and the detection rate of aortic valve regurgitation by ultrasound was 200% higher than that of auscultation (P <0.01). Heart function ~ grade group cardiac output, ejection fraction, FS and normal group no difference (P> 0.05), while there are differences in heart rate; (P <0. 05) Group differences (P <0. 01). Conclusion 1 After heart failure, cardiac pump function does not change, the left ventricular systolic function is not lower than normal, but the stroke volume decreased. Left ventricular systolic function impaired with cardiac function and mitral stenosis. 2 ultrasound on the expansion of the heart, valve regurgitation, pericardial effusion and other clinical and X-ray has a higher detection rate