ATLANTIC DIP: The Impact of Obesity on Pregnancy Outcome in Glucose-Tolerant Women

  1. for the ATLANTIC DIP Collaborators
  1. 1Department of Medicine, National University of Ireland, Galway, Ireland;
  2. 2Department of Obstetrics and Gynecology, National University of Ireland, Galway, Ireland.
  1. Corresponding author: Fidelma Dunne, fidelma.dunne{at}


OBJECTIVE A prospective study of the impact of obesity on pregnancy outcome in glucose-tolerant women.

RESEARCH DESIGN AND METHODS The Irish Atlantic Diabetes in Pregnancy network advocates universal screening for gestational diabetes. Women with normoglycemia and a recorded booking BMI were included. Maternal and infant outcomes correlated with booking BMI are reported.

RESULTS A total of 2,329 women fulfilled the criteria. Caesarean deliveries increased in overweight (OW) (odds ratio 1.57 [95% CI 1.24–1.98]) and obese (OB) (2.65 [2.03–3.46]) women. Hypertensive disorders increased in OW (2.30 [1.55–3.40]) and OB (3.29 [2.14–5.05]) women. Reported miscarriages increased in OB (1.4 [1.11–1.77]) women. Mean birth weight was 3.46 kg in normal BMI (NBMI), 3.54 kg in OW, and 3.62 kg in OB (P < 0.01) mothers. Macrosomia occurred in 15.5, 21.4, and 27.8% of babies of NBMI, OW, and OB mothers, respectively (P < 0.01). Shoulder dystocia occur in 4% (>4 kg) compared with 0.2% (<4 kg) babies (P < 0.01). Congenital malformation risk increased for OB (2.47 [1.09–5.60]) women.

CONCLUSIONS OW and OB glucose-tolerant women have greater adverse pregnancy outcomes.


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    • Received May 19, 2009.
    • Accepted November 19, 2009.
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  1. Diabetes Care vol. 33 no. 3 577-579
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