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J Clin Endocrinol Metab. 2009 Nov;94(11):4284-91. doi: 10.1210/jc.2009-1231. Epub 2009 Oct 6.

Maternal and fetal outcome in women with type 2 versus type 1 diabetes mellitus: a systematic review and metaanalysis.

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  • 1Servei d'Endocrinologia i Nutrició, Hospital Mútua de Terrassa, Terrassa 08221, Spain. 23591mbc@comb.cat

Abstract

CONTEXT:

Glycemic disturbance is usually less severe in pregnant women with type 2 than in those with type 1 diabetes mellitus (DM). Nevertheless, a worse perinatal outcome in women with type 2 DM has been reported in some studies.

OBJECTIVE:

Our objective was to review maternal and fetal outcomes in pregnant women with type 2 vs. type 1 DM.

STUDY SELECTION:

We conducted a systematic review of papers providing original data on pregnancy outcomes in both type 2 and type 1 DM (Medline search of the period January 1, 1987, to June 30, 2008). Two independent investigators considered papers for eligibility, and a third one solved discrepancies.

DATA EXTRACTION:

Metaanalysis tools were used to compare four main outcomes (major congenital malformations, stillbirth, and neonatal and perinatal mortality) and 15 secondary ones (five maternal, 10 fetal). Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines were used to assess quality.

DATA SYNTHESIS:

Thirty-three studies qualified for inclusion of 3743 citations retrieved. Women with type 2 DM had lower glycated hemoglobin (HbA1c) at booking and throughout pregnancy but a higher risk of perinatal mortality [odds ratio (OR) 1.50, 95% confidence interval (CI) 1.15-1.96] without significant differences in the rates of major congenital malformations, stillbirth, and neonatal mortality. As to secondary outcomes, women with type 2 DM had less diabetic ketoacidosis (OR 0.09, 95% CI 0.02-0.34) and cesarean section (OR 0.80, 95% CI 0.59-0.94) without differences in other outcomes.

CONCLUSIONS:

Despite a milder glycemic disturbance, women with type 2 DM had no better perinatal outcomes than those with type 1, indicating that type 2 DM in pregnancy is a serious condition.

PMID:
19808847
[PubMed - indexed for MEDLINE]
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