Enrico Ferrazzi1, Gloria Brembilla2, Sonia Cipriani3, Stefania Livio2, Andrea Paganelli2, Fabio Parazzini4. 1. Department of Obstetrics and Gynaecology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, EU, Italy; Dept of Clinical Sciences and Community Health, University of Milan, Milan, EU, Italy. 2. Dept of Woman Mother and Neonate, Buzzi Children's Hospital, University of Milan, EU, Italy. 3. Department of Obstetrics and Gynaecology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, EU, Italy. 4. Department of Obstetrics and Gynaecology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, EU, Italy; Dept of Clinical Sciences and Community Health, University of Milan, Milan, EU, Italy. Electronic address: Fabio.Parazzini@unimi.it.
Abstract
INTRODUCTION: We investigated the role of body mass index (BMI) and maternal age on the risk of late-term induction, prolonged induction time and caesarean section (CS) after induction. MATERIAL AND METHODS: This is a retrospective, observational study. All women without any fetal or maternal pathological condition, uterine scars or any other indication for an elective caesarean birth and had a singleton foetus in the cephalic position at term were included. RESULTS: A total of 4006 women had a spontaneous onset of labour and 612 were induced for a late-term pregnancy. Labour induction was significantly more common in overweight (Adj Odds Ratio (OR) 1.48 95%CI 1.22-1.78) and obese (Adj OR 1.63 95%CI 1.24-2.14) women. Among induced women, a BMI ≥ 30 was a risk factor for a prolonged induction time in both nulliparous (AdjOR 2.4, 95%CI 1.02-5.67) and multiparous women (AdjOR 4.24, 95%CI 1.02-17.6). A BMI > 25-29.9 was significantly associated with a prolonged induction time only in nulliparous women (AdjOR 1.86 95%CI 1.05-3.30). A CS was more frequent in overweight (AdjOR 1.74, 95% CI 1.052.89) and obese women (AdjOR 2.72, 95%CI 1.42-5.25). Nulliparous women ageed 30-34 years had an induction time longer than women <30 years (OR 2.04 95%CI 1.07-3.91). CONCLUSIONS: The results of this study suggest that a BMI > 25 kg/m2 at term of pregnancy is a risk factor for the induction of labour during a late-term pregnancy, a prolonged induction time and higher caesarean section rate.
INTRODUCTION: We investigated the role of body mass index (BMI) and maternal age on the risk of late-term induction, prolonged induction time and caesarean section (CS) after induction. MATERIAL AND METHODS: This is a retrospective, observational study. All women without any fetal or maternal pathological condition, uterine scars or any other indication for an elective caesarean birth and had a singleton foetus in the cephalic position at term were included. RESULTS: A total of 4006 women had a spontaneous onset of labour and 612 were induced for a late-term pregnancy. Labour induction was significantly more common in overweight (Adj Odds Ratio (OR) 1.48 95%CI 1.22-1.78) and obese (Adj OR 1.63 95%CI 1.24-2.14) women. Among induced women, a BMI ≥ 30 was a risk factor for a prolonged induction time in both nulliparous (AdjOR 2.4, 95%CI 1.02-5.67) and multiparous women (AdjOR 4.24, 95%CI 1.02-17.6). A BMI > 25-29.9 was significantly associated with a prolonged induction time only in nulliparous women (AdjOR 1.86 95%CI 1.05-3.30). A CS was more frequent in overweight (AdjOR 1.74, 95% CI 1.052.89) and obesewomen (AdjOR 2.72, 95%CI 1.42-5.25). Nulliparous women ageed 30-34 years had an induction time longer than women <30 years (OR 2.04 95%CI 1.07-3.91). CONCLUSIONS: The results of this study suggest that a BMI > 25 kg/m2 at term of pregnancy is a risk factor for the induction of labour during a late-term pregnancy, a prolonged induction time and higher caesarean section rate.
Authors: Noemí Rodríguez-Mesa; Paula Robles-Benayas; Yolanda Rodríguez-López; Eva María Pérez-Fernández; Ana Isabel Cobo-Cuenca Journal: Int J Environ Res Public Health Date: 2019-06-06 Impact factor: 3.390