【摘要】 【目的】　了解单纯肥胖儿童心脏体积及其放大率K值与正常体重儿童的差异 ,建立三种预测肥胖儿童心脏体积的回归方程。　【方法】　比较肥胖儿童心脏体积及其放大率K值与正常儿童的差异。经回归分析建立预测心脏深径法、体重法、胸径法预计肥胖儿童心脏体积的回归方程 ,并进行三种方法精确性比较。　【结果】　肥胖儿童心脏体积显著地大于正常体重儿童 ;中、重度肥胖心脏体积大于轻度肥胖者 ;心脏体积放大系数K值显著地小于正常体重儿童 (P <0 .0 1)。建立了预测心脏深径法方程、体重法方程、胸径法方程。　【结论】　用X线评价肥胖儿童心脏大小必须使用其自身数值和计算方程。更多还原

【Abstract】 Objective To ascertain the difference between the heart volume,value K of simple obesity and that of the normal children and to establish the three kind’s regression equations that can predict the heart volume. The radiolucent heart volume of 464 children aged 3 to 7 years for simple obesity, the heart volume and value K of simple obesity were compared with that of normal children. The three different regression equations that could predict the heart volume of simple obesity were established by multiple lineal regression analysis and the accuracy of the regression equations in predicting the heart volume were compared. The heart volume of simple obesity was obviously larger than that of normal weight children and the value K was obviously smaller than that of normal weight children and the heart volume of middle and severe obese children was larger than that of light obese children(P<0.01). The three regression equations run as follows:the method of predicting the heart deep diameters,body weight method, thoracic diameters method. [Conclusion] The data of simple obesity themselves must be used when the heart size of simple obesity is evaluated by X-ray.更多还原