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DIABETES IN
PREGNANCY - PRE-PREGNANCY PLANNING |
BMJ. 2004 Apr 17;328(7445):915.
Risk of complications of pregnancy in women with type 1 diabetes: nationwide
prospective study in the Netherlands.
Evers IM, de Valk HW, Visser GH.
Department of Obstetrics, University Medical Center Utrecht, PO Box 85090,
3508 AB, Utrecht, Netherlands. ingwil@worldonline.nl
Objectives:
To investigate maternal, perinatal, and neonatal outcomes of
pregnancies in women with type 1 diabetes in the Netherlands.
Design:
Nationwide prospective cohort study.
Setting:
All 118 hospitals in the
Netherlands. PARTICIPANTS: 323 women with type 1 diabetes who became
pregnant between 1 April 1999 and 1 April 2000.
Main Outcome Measures:
Maternal, perinatal, and neonatal outcomes of pregnancy.
Results:
84% (n =
271) of the pregnancies were planned. Glycaemic control early in pregnancy
was good in most women (HbA(1c) < or = 7.0% in 75% (n = 212) of the
population), and folic acid supplementation was adequate in 70% (n = 226).
314 pregnancies that went beyond 24 weeks' gestation resulted in 324
infants. The rates of pre-eclampsia (40; 12.7%), preterm delivery (101;
32.2%), caesarean section (139; 44.3%), maternal mortality (2; 0.6%),
congenital malformations (29; 8.8%), perinatal mortality (9; 2.8%), and
macrosomia (146; 45.1%) were considerably higher than in the general
population. Neonatal morbidity (one or more complications) was extremely
high (260; 80.2%). The incidence of major congenital malformations was
significantly lower in planned pregnancies than in unplanned pregnancies
(4.2% (n = 11) v 12.2% (n = 6); relative risk 0.34, 95% confidence interval
0.13 to 0.88).
Conclusion:
Despite a high frequency of planned pregnancies,
resulting in overall good glycaemic control (early) in pregnancy and a high
rate of adequate use of folic acid, maternal and perinatal complications
were still increased in women with type 1 diabetes. Neonatal morbidity,
especially hypoglycaemia, was also extremely high. Near optimal maternal
glycaemic control (HbA1c < or = 7.0%) apparently is not good enough.
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