Birth complications, overweight, and physical inactivity.
OBJECTIVE
Maternal lifestyle factors are potential predictors of pregnancy complications. We examined relations between modifiable factors and delivery complications.


METHODS
Prospective cohort.


METHODS
University hospital antenatal clinic, Oslo, Norway.


METHODS
A cohort of 553 women followed through pregnancy and delivery.


METHODS
Pre-specified birth complications: cesarean section (CS), operative vaginal deliveries (VDs), third and fourth degree of perineal lacerations and hemorrhage (> or =1,000 ml).


METHODS
Univariate and multiple logistic regression analyses were performed. Besides high birthweight (> or =4,200 g), modifiable predictors (high body mass index (BMI), fasting glucose and physical inactivity) and non-modifiable predictors (parity, maternal age, gestational age, and gender) were considered.


RESULTS
Significant predictors for induction of labor were parity (odds ratio (OR): 2.1; 95% CI 1.3-3.5), maternal age (OR: 2.0; 1.2-3.4), gestational age (OR: 1.9; 1.1-3.1), and BMI > or =30 (OR: 4.2; 2.2-7.8, p<0.01). High birthweight and high BMI were overrepresented among CSs. Emergency CS was associated with birthweight (OR: 3.7; 1.7-8.1), parity (OR: 3.5; 1.7-7.2), maternal age (OR: 2.6; 1.3-5.3), and induction of labor (OR: 4.8; 2.6-9.1). After excluding CS, operative VD was associated with parity (OR: 8.7; 3.8-20) and gender (OR: 2.2; 1.2-14.1). Perineal laceration was associated with pre-gestational physical inactivity (OR: 6.1; 1.6-22.9) and operative VD (OR: 5.1; 1.5-17.6). Hemorrhage was associated with high birthweight (OR: 4.2; 1.2-4.7) and BMI > or =30 (OR: 4.6; 1.2-17.7).


CONCLUSIONS
Pre-gestational physical inactivity increased the risk of perineal lacerations and male infants were associated with higher risk of vaginal operative delivery.
Voldner
Nanna
N
Department of Obstetrics and Gynecology, Rikshospitalet University Hospital, University of Oslo, Oslo, Norway. nanna.voldner@rikshospitalet.no
Frøslie
Kathrine Frey
KF
Haakstad
Lene Anette Hagen
LA
Bø
Kari
K
Henriksen
Tore
T
D000328:Adult; D001003:Anal Canal / Q000293:injuries; D001786:Blood Glucose / Q000378:metabolism; D015992:Body Mass Index; D002585:Cesarean Section / Q000706:statistics & numerical data*; D015331:Cohort Studies; D036861:Delivery, Obstetric / Q000706:statistics & numerical data*; D015444:Exercise / Q000502:physiology*; D005260:Female; D005320:Fetal Macrosomia / Q000453:epidemiology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D015601:Injury Severity Score; D007751:Labor, Induced; D022125:Lacerations / Q000453:epidemiology*; D008019:Life Style; D016015:Logistic Models; D008297:Male; D008423:Maternal Age; D009765:Obesity / Q000150:complications*; D007744:Obstetric Labor Complications / Q000453:epidemiology*; D010298:Parity; D011247:Pregnancy; D011446:Prospective Studies; D012307:Risk Factors; D012737:Sex Factors
D001786:Blood Glucose