Gaudet Laura M, Gruslin Andrée, Magee Laura A
Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, University of Ottawa, Ottawa, ON.
J Obstet Gynaecol Can. 2011 Mar;33(3):227-34. doi: 10.1016/s1701-2163(16)34823-x.
Misclassification of body mass index (BMI) by pregnant women could be a significant barrier to minimizing weight-related adverse pregnancy outcomes and improving the short- and long-term health of mother and child. The primary objective in this study was to determine the proportion of a group of pregnant women who were able to correctly classify BMI. Secondary objectives included assessing the direction of BMI misclassification and maternal knowledge of target gestational weight gain and obesity-associated pregnancy complications.
We designed a cross-sectional survey to assess misclassification of BMI and knowledge of obesity and pregnancy outcomes, and to provide information regarding the participants' sources of knowledge, their perception of appropriate weight gain in pregnancy, and basic demographic information. The questionnaire was completed by participants awaiting routine ultrasound assessment at between 11 and 24 weeks' gestation.
Of 117 respondents, 30 (25.6%) were overweight (BMI 25 to 29.9) or obese (BMI ≥ 30.0). Obese or overweight women were significantly more likely to misclassify their BMI. Furthermore, they were significantly more likely to overestimate the minimum and maximum target gestational weight gains for their respective BMI classes. There were no differences between women in the various BMI categories with regard to their awareness of several common obesity-related pregnancy complications.
Misclassification of pre-pregnancy BMI is common, particularly among women carrying excess weight. Evaluation of pre-pregnancy BMI and education regarding appropriate gestational weight gain are logical initial steps for optimizing weight-related pregnancy outcomes.
孕妇对体重指数(BMI)的错误分类可能是将与体重相关的不良妊娠结局降至最低并改善母婴短期和长期健康的重大障碍。本研究的主要目的是确定一组能够正确分类BMI的孕妇比例。次要目标包括评估BMI错误分类的方向以及母亲对目标孕期体重增加和肥胖相关妊娠并发症的了解情况。
我们设计了一项横断面调查,以评估BMI的错误分类以及对肥胖和妊娠结局的了解情况,并提供有关参与者知识来源、他们对孕期适当体重增加的看法以及基本人口统计学信息。问卷由在妊娠11至24周期间等待常规超声评估的参与者完成。
在117名受访者中,30名(25.6%)超重(BMI为25至29.9)或肥胖(BMI≥30.0)。肥胖或超重女性更有可能错误分类她们的BMI。此外,她们更有可能高估各自BMI类别对应的孕期体重增加的最小值和最大值。不同BMI类别的女性对几种常见的肥胖相关妊娠并发症的知晓情况没有差异。
孕前BMI的错误分类很常见,尤其是在体重超重的女性中。评估孕前BMI并开展关于适当孕期体重增加的教育是优化与体重相关的妊娠结局的合理初步措施。