深圳16 865例胎龄27~42周单胎新生儿维尔维克指数研究

目的 维尔维克指数（VI）主要反映人体的胸廓发育、体型和营养状况。该研究旨在调查胎龄27~42周新生儿出生时的VI值，制定其百分位曲线。方法 2013年4月至2015年9月采用横断面时间段整群抽样实况调查方法，在深圳两家医院完成了16 865例胎龄27~42周单胎新生儿体重、身长、胸围现场测量，用以计算VI值，并制定不同胎龄新生儿的VI百分位曲线。结果 获得了胎龄27~42周单胎新生儿（男、女、性别混合）三分组的VI均数，并制定了其3rd~97th百分位曲线。胎龄27周者VI的50th曲线值最低，随着胎龄增加，VI的50th曲线值不断增大，胎龄42周者50th曲线值最大。各胎龄组女性VI的50th百分位曲线数值均略高于男性。结论 新生儿出生时VI值伴随胎龄增加而增大。女性新生儿出生时胸廓发育、体型、营养状况可能略好于男性。该研究制定的胎龄27~42周单胎新生儿（男、女、性别混合）三分组的VI百分位曲线可为深圳新生儿出生时胸廓发育、体型和营养状况的评估提供参考。

A study of Ververck index in 16 865 singleton neonates with a gestational age of 27-42 weeks in Shenzhen, China

Objective Ververck index (VI) reflects thoracic development, body type, and nutritional status. This study aimed to investigate the VI of singleton neonates with a gestational age (GA) of 27-42 weeks at birth, and to establish percentile curves of VI of the neonates.Methods Cross-sectional cluster sampling was performed between April 2013 and September 2015. Body weight, body length, and chest circumference were measured for 16 865 singleton neonates with a GA of 27-42 weeks in two hospitals in Shenzhen, China. VI was calculated and the percentile curves of VI were plotted for the neonates.Results Mean VIs were obtained for singleton neonates with a gestational age of 27-42 weeks (in three groups of male, female, and both sexes), and related 3rd-97th percentile curves were plotted. As for the 50th percentile curve, the singleton neonates with a GA of 27 weeks had the lowest 50th percentile value of VI, which gradually increased with the increase in GA. The singleton neonates with a GA of 42 weeks had the highest 50th percentile value of VI. Girls had a slightly higher 50th percentile value of VI than boys in all GA groups.Conclusions VI of neonates increases with the increase in GA. Female neonates may have a slightly better thoracic development, body type, and nutritional status than male neonates at birth. The percentile curves of VI plotted for singleton neonates with a GA of 27-42 weeks (in three groups of male, female, and both sexes) can provide a basis for evaluating thoracic development, body type, and nutritional status of neonates at birth in Shenzhen, China.