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研究贵州四民族胎儿宫内发育情况。方法：对汉、侗、布依、苗族中１３３５ 周正常胎儿及３６４１ 周正常新生儿共４０６０ 例测身长、体重、头围、胸围、腹围、上臂围、顶臀长、双顶径、足底长。１３３５ 周者加测右肱骨、股骨长。结果各族胎儿体格大小稍有差别，其共同规律为：身长、顶臀长、头围、双顶径２８ 周前增长快于２８ 周后。体重、腹围２６ 周后增长加快。３７ 周后各项指标增长减慢。各民族均有两次高峰增长期，分别在２６２８ 周（有顶臀长、体重、腹围增长快） 及３４３５ 周（ 有身长、体重、腹围、双顶径增长快，围产保健应掌握生长发育规律，加强高峰期监护。
Study on the Development of Fetal Uterus in Four Nationalities in Guizhou Province. Methods: A total of 4060 normal fetuses of 13-35 weeks and 36-41 weeks of normal newborns from Han, Dong, Buyi and Miao nationality were enrolled in this study. Body length, body weight, head circumference, bust, abdominal circumference, upper arm circumference, Diameter, plantar length. 13 35 weeks plus test right humerus, femur long. Results There was a slight difference in body size between fetuses of all ethnic groups. The common law was that their body length, top hip length, head circumference and biparietal diameter increased 28 weeks earlier than those before 28 weeks. Weight, abdominal circumference after 26 weeks to accelerate growth. After 37 weeks, the growth of all indicators slowed down. Each ethnic group had two peak growth periods of 26 to 28 weeks (top-to-bottom length, fast weight and fasting abdominal circumference) and 34 to 35 weeks (with fast growth in body weight, abdominal circumference and biparietal diameter, Health care should master the law of growth and development, strengthen peak guardianship.