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DIABETES IN
PREGNANCY - COMPLICATIONS - FETAL LOSS |
Obstet Gynecol. 2006 Sep;108(3 Pt 1):644-50.
Fetal and neonatal outcomes of diabetic pregnancies.
Yang J, Cummings EA, O'connell C, Jangaard K.
Department of Pediatrics, Izaak Walton Killam Health Centre and Dalhousie
University, Halifax, Nova Scotia, Canada.
Objectives:
To estimate whether the incidences of adverse fetal and neonatal
outcomes in infants of mothers with preexisting types 1 and 2 diabetes 1)
differ from infants of nondiabetic mothers in Nova Scotia (NS); and 2) have
changed between 1988 and 2002.
Methods:
Population-based cohort study using
the NS Atlee Perinatal Database, a well-validated source of standardized
clinical information.
Results:
A total of 516 infants of diabetic mothers
and 150,589 infants of nondiabetic mothers from singleton pregnancies were
studied. Infants of diabetic mothers had significantly higher rates of
perinatal mortality (17.4/1,000 compared with 5.9/1,000, relative risk [RR]
3.01, 95% confidence interval [CI] 1.55-5.84), major congenital anomaly
(9.1% compared with 3.1%, RR 2.97, 95% CI 2.25-3.90), and large for
gestational age birth (LGA, more than 90th percentile weight for gestational
age) (45.2% compared with 12.6%, RR 3.59, 95% CI 3.26-3.95) than infants of
nondiabetic mothers. In infants of diabetic mothers, there was no
improvement in perinatal mortality (23.4/1,000 in 1988-1995 compared with
11.5/1000 in 1996-2002, P = .340), incidence of LGA (48.0% in 1988-1995
compared with 42.3% in 1996-2002, P = .237), or rate of major congenital
anomaly (8.2% in 1988-1995 compared with 10.0% in 1996-2002, P = .560).
Diabetes remained an independent risk factor for LGA infants and major
congenital anomaly after adjusting for possible confounders.
Conclusion:
Rates of adverse neonatal outcomes are 3-9 times greater in infants of
diabetic mothers compared with those of nondiabetic mothers. There were no
significant improvements in rates of perinatal mortality, congenital
anomaly, or LGA birth in infants of diabetic mothers in 1996-2002 compared
with 1988-95.
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