Xiong Anqi, Huang Yan, Ke Jingyuan, Luo Shiqi, Tong Yunxuan, Zhao Li, Luo Biru, Liao Shujuan
Department of Nursing, West China Second University Hospital, Sichuan University / West China School of Nursing, Sichuan University, Chengdu, Sichuan, China.
Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, Sichuan, China.
BMC Pregnancy Childbirth. 2025 May 10;25(1):557. doi: 10.1186/s12884-025-07643-8.
To explore the relationships between second-trimester anthropometric obesity indicators and cesarean section (CS).
A retrospective study was conducted at West China Second University Hospital, utilizing electronic health records from 15,304 pregnant women who received routine prenatal care and delivered between January 2021 and June 2022. Second-trimester anthropometric indicators, including body roundness index (BRI), body mass index (BMI), body fat percentage (BFP), and waist circumference (WC), were measured using bioelectrical impedance analysis (BIA). Logistic regression models were employed to assess the associations between these indicators and CS risk, with additional subgroup analyses based on maternal age and fetal sex.
The mean maternal age was 30.13 years. After adjusting for covariates, BRI (OR 1.22, 95%CI 1.15-1.30), BMI (OR 1.07, 95%CI 1.05-1.08), BFP (OR 1.03, 95%CI 1.02-1.04), and WC (OR 1.02, 95%CI 1.01-1.03) were all significantly associated with CS. Stratified analyses based on maternal age and fetal sex further confirmed these independent associations.
Second-trimester BRI, BMI, BFP, and WC were all significantly associated with CS risk, with BRI potentially demonstrating the strongest independent correlation. An integrated approach incorporating BMI and WC is recommended for CS risk, particularly in time-sensitive or resource-limited settings. The effect of anthropometric changes during pregnancy on CS may be explored in the future.
探讨孕中期人体测量肥胖指标与剖宫产（CS）之间的关系。
在华西第二医院进行了一项回顾性研究，利用2021年1月至2022年6月期间接受常规产前检查并分娩的15304名孕妇的电子健康记录。使用生物电阻抗分析（BIA）测量孕中期人体测量指标，包括身体圆润度指数（BRI）、体重指数（BMI）、体脂百分比（BFP）和腰围（WC）。采用逻辑回归模型评估这些指标与剖宫产风险之间的关联，并根据产妇年龄和胎儿性别进行额外的亚组分析。
产妇平均年龄为30.13岁。在调整协变量后，BRI（比值比1.22，95%置信区间1.15 - 1.30）、BMI（比值比1.07，95%置信区间1.05 - 1.08）、BFP（比值比1.03，95%置信区间1.02 - 1.04）和WC（比值比1.02，95%置信区间1.01 - 1.03）均与剖宫产显著相关。基于产妇年龄和胎儿性别的分层分析进一步证实了这些独立关联。
孕中期的BRI、BMI、BFP和WC均与剖宫产风险显著相关，其中BRI可能显示出最强的独立相关性。建议采用综合BMI和WC的方法来评估剖宫产风险，特别是在时间敏感或资源有限的情况下。未来可探讨孕期人体测量变化对剖宫产的影响。
