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为了解少年儿童心脏发育指标及心功能的状况，我们应用M到超声心动图（M－ME）检查，对儿童心脏进行了检查及对照分析。1对象与方法1．1检查对象：于1992～1993年对临沂市4所学校的正常少年儿童6～17岁622名及沂水县的正常少年儿童3～5岁98名，采取随机抽样方法进行检查。1．2
To understand the cardiac development of children and cardiac function status, we use M to echocardiography (M-ME) examination, the heart of children were examined and controlled analysis. 1 Subjects and Methods 1.1 Check the object: In 1992 to 1993 in Linyi City, four schools of normal children 6 to 17 years old 622 and Yishui County normal children 3 to 5 years old 98, a random sampling method Check. 1.2