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Effects that gestational diatetes can have on the fetus include high birth weight for gestational age, neonatal hypogylcemia, premature delivery with respiratory distress syndrome, difficult delivery, and a higher incidence of fetal-neonatal mortality.
Previously only women with recognizable risk factors for gestational diatetes were screened for glucose intolerance; these included obese women, women who had a family history of diabetes, and those older than 35 years. Because a significant proportion of cases of gestational diabetes--up to 50 percent--were missed in this way, it is now recommended that all women between the 24th and 28th week of gestation be screened for glucose intolerance; those at high risk should be screened during their first prenatal visit. Controversy exists concerning the best glucose-tolerance screening procedure to use.
Treatment of gestational diatetes varies according to the individual case. Controlling diet is the first, conservative approach; insulin therapy is instituted when glucose levels cannot be managed in this way. Fetal monitoring of growth development is necessary to measure the effectiveness of treatment and to anticipate and prevent complications. An early delivery by cesarean section (incision through the abdominal and uterine walls for fetal delivery) was frequently recommended in the past. Today the procedure, which has its own risks, is selected less often, as long as the disease has been well controlled and fetal development is normal. (Ed.)