Echocardiograms were obtained from 245 newborn infants ranging from 1,400 to 4,200 gm in weight, utilizing a continuous recording technique with a 5 MHz transducer.

• 摘要以超音波心图检查本院245名新生儿，其中低体重组(1,400至2,450公克)计33名，足月儿组(2,500至4,200公克)计212名。