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小儿先心病尤左室压力负荷过重者常临床无症状,体力活跃,能参加运动.用普通的运动试验(运动至心率170/分)或最大运动耐量试验均难以区分心动不全抑或训练较差.因而在运动时直接的无创性的测量左室功能是很有意义的.材料及方法:35例6～14岁儿童,女13,男22,主动脉瓣狭窄(瓣下及瓣)13例,主动脉瓣置换术后2例,主动脉缩窄9例,室缺7例,主动脉瓣回流2例,肥
Children with congenital heart disease particularly left ventricular pressure overload often clinically asymptomatic, physical activity, to participate in exercise with ordinary exercise test (exercise to heart rate 170 / min) or maximum exercise tolerance test are difficult to distinguish between poor heart or training . Therefore, direct noninvasive measurement of left ventricular function during exercise is of great significance.Materials and methods: Thirteen 35 children aged 6-14 years, 13 female, 22 male, aortic valve stenosis (flap and flap) , Aortic valve replacement in 2 cases, 9 cases of aortic stenosis, ventricular septal defect in 7 cases, aortic valve regurgitation in 2 cases, fat