广州市区早产儿上臂围、上臂围/头围测定及其意义探讨

Measurment of MAC and of MAC/HC of Premature Infants in Guangzhou Area and Its Clinical Significance

本文测量出生后第三天早产儿171例上臂围、上臂围/头围比数值分别为8.35±0.61cm,0.27+0.017。与体重直线相关系数(r)分别是0.661,0.364,均有极显著性(P<0.01),呈线性增长。经主成分分析,提示早产儿主要因素是上臂围和体重的不足。

The MAC (Mid Circumference) and MAC/HC (the ratio of MAc and Head Circumference) of 171 prematureinfants were measured on the 3rd day after born. The mean MAC and MAC/HC were 8. 35±0.16 cm and 0.27 ± 0. 017, respectively. The regression anaysis of premature infant's weight vs. MAC and of premature infant's weight vs MAC/HC were calculated with SAS program. The linear coefficients (r) were 0. 661 (the former) and 0. 364 (the later) with linear increasing, and both were statistically signicant (a value at 0. 001 level). The MAC and MAC/HC in this report are different from those of others according to the results of Principal Compenent Analysis . It is shown that MAC and body weight are two main factors estimating for the premature infants.