8～12岁单纯性肥胖儿童心功能研究

利用多导生理仪，同步记录心电图、心音图、颈动脉搏动图和心阻抗微分图，测试８～１２岁肥胖儿童９４名，对照组儿童７６名，分析比较有关心功能数据。结果显示肥胖儿童收缩压、舒张压、平均动脉压、左室射血时间和心搏出量高于对照组儿童，心输出量与对照组比较差异无显著性，心功能指数低于对照组儿童。提示肥胖儿童由于回心血量增加，血压增高，而使心脏前、后负荷加重，心肌收缩力代偿性增强，单位体表面积心输出量下降，部分心功能指标已受到影响。

Studies on Cardiac Function in Chil dren Aged 8-12 with Simple Obcsity

nety-four obses children and 74 normal controls ageds 8-12 were measured simultaneously by physiological polygraph,electrocardiograph,phonocardiograph, carotid arterial pulse contour and intrac- ardiac impedance differential graph to analyze their cardiac function. Results revealed systolic blood pres- sure,diastolic blood pressure,mean arterial pressure,left ventricular ejection time and stroke volume in obese children were higher than those in controls,no significant difference in cardiac output between them could be seen,and cardidac index in the former was lower than that in the latter.It suggested due to increase of venous return to the heart and rise of blood pressure in obese children,their preload and afterload of the heart increased,cardiac muscular contraction strengthened for compensation,cardiac output per unit body surface area declined,and part of their cardiac function indexes had been affected.