Related Experiment Video
Updated: Feb 16, 2026

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Effect of pre-pregnancy maternal body mass index on pregnancy outcomes in nulliparous women in the Islamic Republic
Marzieh Sfandiary1, Shamsi Parvizi1, Afshin Almasi2
1Department of Midwifery, Nursing and Midwifery Faculty, Kermanshah University of Medical Sciences, Kermanshah, Islamic Republic of Iran.
This study was conducted to evaluate the effect of pre-pregnancy BMI on pregnancy outcomes. BMI was calculated measured in 360 nulliparous women. According to BMI, pregnant women were placed into three groups: group I (lean group BMI ≤ 19.8), group II (normal weight group BMI = 19.9-24.9), and group III (obese group BMI ≥ 25). Data were analyzed using SPSS 16. The mean duration of the first and the second stage of labour were significantly different between three groups (P < 0.001). Cesarean section ratio in group I was lower than group II (OR = 0.15; P = 0.013). Instrumental delivery in group III was more than group II (OR=4.6; P = 0.002). Risk of nonreactive non-stress test (NST) was significantly different between groups II and III (OR = 5.7; P = 0.009). Induction ratio in group I was lower than group II (OR=0.43; P = 0.002). Deviation of BMI from the normal level is associated with adverse outcomes of pregnancy and delivery.
This study was conducted to evaluate the effect of pre-pregnancy BMI on pregnancy outcomes. BMI was calculated measured in 360 nulliparous women. According to BMI, pregnant women were placed into three groups: group I (lean group BMI ≤ 19.8), group II (normal weight group BMI = 19.9-24.9), and group III (obese group BMI ≥ 25). Data were analyzed using SPSS 16. The mean duration of the first and the second stage of labour were significantly different between three groups (P < 0.001). Cesarean section ratio in group I was lower than group II (OR = 0.15; P = 0.013). Instrumental delivery in group III was more than group II (OR=4.6; P = 0.002). Risk of nonreactive non-stress test (NST) was significantly different between groups II and III (OR = 5.7; P = 0.009). Induction ratio in group I was lower than group II (OR=0.43; P = 0.002). Deviation of BMI from the normal level is associated with adverse outcomes of pregnancy and delivery.
More Related Videos
05:17Author Spotlight: Enhancing the Offspring Health in Rats with Maternal Exercise During Pregnancy
Published on: April 5, 2024
09:09Generating a Reproducible Model of Mid-Gestational Maternal Immune Activation using PolyI:C to Study Susceptibility and Resilience in Offspring
Published on: August 17, 2022
Related Concept Videos
Regression Toward the Mean
Obesity
Drug Dosing: Obese Patients
Pathophysiology of Diabetes
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Diabetes Mellitus: Type 2 and Gestational
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution