Crosby David A, Collins Martha, O'Higgins Amy, Mullaney Laura, Farah Nadine, Turner Michael J
University College Dublin Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland.
Am J Perinatol. 2015 Feb;30(2):199-204. doi: 10.1055/s-0034-1381318. Epub 2014 Jun 10.
This longitudinal study compared changes in maternal weight and body mass index (BMI) in early pregnancy in the time interval between when a woman first attended for antenatal care with her first child and when she next attended for antenatal care.
We studied women with a singleton pregnancy who delivered their first baby weighing ≥ 500 g in 2009 and who attended again for antenatal care with an ongoing pregnancy before January 1, 2012. Maternal weight and height were measured before 18 weeks' gestation in both pregnancies and BMI was calculated.
Of the 3,284 primigravidas, the mean weight at the first visit in 2009 was 66.4 kg (standard deviation [SD] 12.7). The mean BMI was 24.5 kg/m(2) (SD 4.6), and 11.3% (n = 370) were obese. Of the 3,284 women, 1,220 (37.1%) re-attended for antenatal care before 2012 after sonographic confirmation of an ongoing pregnancy. Of the 1,220 women who re-attended, 788 (64.6%) had gained weight (mean 4.6 kg [SD 3.9]), 402 (33%) had lost weight (mean 3 kg [SD 2.9]), and 30 (2.4%) had maintained their weight.
The birth of a first baby was associated with an increase in maternal weight in two-thirds of women when they next attended for antenatal care.
本纵向研究比较了女性首次带着第一个孩子进行产前检查至下次进行产前检查期间，孕早期孕妇体重和体重指数（BMI）的变化情况。
我们研究了2009年分娩出体重≥500克的第一个婴儿、且在2012年1月1日前再次带着正在进行的妊娠进行产前检查的单胎妊娠女性。在两次妊娠中，均在妊娠18周前测量孕妇体重和身高，并计算BMI。
在3284名初产妇中，2009年首次就诊时的平均体重为66.4千克（标准差[SD]为12.7）。平均BMI为24.5千克/平方米（SD为4.6），11.3%（n = 370）为肥胖。在3284名女性中，1220名（37.1%）在超声确认妊娠仍在进行后于2012年前再次进行产前检查。在再次就诊的1220名女性中，788名（64.6%）体重增加（平均增加4.6千克[SD为3.9]），402名（33%）体重减轻（平均减轻3千克[SD为2.9]），30名（2.4%）体重维持不变。
三分之二的女性在下次进行产前检查时，第一个孩子的出生与孕妇体重增加有关。
