Diabetes Care, Vol 11, Issue 10 761-768, Copyright © 1988 by American Diabetes Association
Prevention of perinatal morbidity by tight metabolic control in gestational diabetes mellitus
H Drexel, A Bichler, S Sailer, C Breier, HJ Lisch, H Braunsteiner and JR Patsch
Department of Medicine, University of Innsbruck, Austria.
In a prospective controlled trial, we studied the effect of tight metabolic
control on the outcomes of 102 gestational diabetes mellitus (GDM)
pregnancies compared with outcomes of 102 matched nondiabetic control
pregnancies. Women with GDM were treated to achieve and maintain a blood
glucose concentration of less than 130 mg/dl at 1 h after breakfast.
Treatment consisted of a diet low in oligosaccharides and fat and, if
necessary, once daily insulin. By the end of gestation, 88 of the 102 women
with GDM received insulin at a mean dose of 18 U/day. Duration of insulin
therapy ranged from 3 to 32 wk with a median of 11 wk. Perinatal outcome of
GDM pregnancies under this management equaled that of control pregnancies.
The full spectrum of excess morbidity from GDM was prevented, and normal
distribution of birth weight and normal rates of macrosomia, dystrophy,
hypoglycemia, hypocalcemia, hyperbilirubinemia, fetal acidosis, and low
Apgar scores were achieved. No mortality was observed. In addition to the
two main study groups, we also studied a third group of 24 women with GDM
whose treatment lasted less than or equal to 5 wk due to late diagnosis.
This suboptimally treated group demonstrated a significant (P less than
.05) increase of macrosomia and umbilical artery acidosis compared with the
well-treated GDM group. The study reported herein demonstrates that excess
mortality and morbidity typically observed in GDM can be prevented by early
institution of tight metabolic control, which required insulin in 86% of
our patients.