Walther F J, Siassi B, King J, Wu P Y
Pediatr Cardiol. 1985;6(2):61-3. doi: 10.1007/BF02282739.
Aortic root diameter measurements were obtained during the first week of life by M-mode echocardiography using leading edge methodology during early diastole in 172 preterm and 228 term neonates. At least 40 newborns were included in each 500-g birth-weight subgroup from 750 to 4750 g. The aortic root diameter increased linearly from 0.63 +/- 0.04 cm in newborns with birth weights of 750-1249 g to 1.06 +/- 0.06 cm in newborns of 4250-4750 g.
在出生后第一周，对172例早产儿和228例足月儿采用M型超声心动图前缘测量法，于舒张早期测量主动脉根部直径。从750克至4750克的每个500克出生体重亚组中至少纳入40例新生儿。主动脉根部直径从出生体重750 - 1249克新生儿的0.63±0.04厘米呈线性增加至4250 - 4750克新生儿的1.06±0.06厘米。
