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Glyburide Effective for Managing Gestational Diabetes

Glyburide may control gestational diabetes unresponsive to diet therapy. According to a new report. "Glyburide is a reasonable alternative to insulin therapy for women diagnosed with gestational diabetes and who fulfill the criteria we used in our study," says,Dr. Gavin F. Jacobson.

Dr. Jacobson, from Kaiser Permanente Northern California, San Francisco, and colleagues compared glyburide and insulin treatment in nearly 600 women with singleton pregnancies who had gestational diabetes diagnosed by oral glucose tolerance test between 12 and 34 weeks gestation, a fasting plasma glucose of 140 mg/dL or less, and who failed diet therapy.

Women treated with glyburide had significantly lower mean fasting and postprandial blood sugar levels, the authors report in the July issue of the American Journal of Obstetrics and Gynecology. Maternal hypoglycemia was rare with both treatments but more common in the glyburide group (0.20%) than in the insulin group (0.08%).

Twenty-eight women (12%) in the glyburide group were switched to insulin, the report indicates, including 14 for poor control and 8 for side effects attributed to hypoglycemia.

Most maternal and neonatal outcomes were similar between treatments, the researchers note. Preeclampsia was more common in the glyburide group, and neonates in the glyburide group were more likely to receive phototherapy.

Neonates in the insulin group, however, were more likely to be admitted to the neonatal intensive care unit, the results indicate. There were no neonatal deaths, lethal anomalies, or exchange transfusions in either treatment group, the investigators report. Four infants in each group had congenital anomalies.

"Women should be switched to insulin if they are unable to achieve adequate glycemic control on glyburide," Dr. Jacobson advised.

Also, he emphasized, "It is important women (treated with glyburide) receive all the other standard prenatal, intrapartum, and postpartum care that would have been provided if they were on insulin, including frequency of visits, counseling, and antenatal surveillance."

The study findings show that "glyburide can be used to achieve good glycemic control in a large clinical setting in the majority of women with gestational diabetes unresponsive to dietary management," write Dr. Celeste Durnwald and Dr. Mark B. Landon from The Ohio State University Medical Center, Columbus, in a related editorial. "Larger trials will also be of benefit in describing clinical characteristics associated with glyburide failure."

Dr. Jacobson added: "We are currently looking at the use of glyburide to treat a subgroup of women diagnosed with gestational diabetes in a nontraditional manner, specifically women diagnosed by a very high 1 hour GLT (>200mg/dl) and an elevated fasting (>105 mg/dl),"
Am J Obstet Gynecol 2005;193:118-124,1-2.
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DID YOU KNOW:
Use of Electronic Medical Record Has Little Impact on Improved Diabetes Quality of Care: The data suggests that despite substantial cost and increasing technical sophistication of EMRs, EMR use failed to achieve desirable levels of clinical improvement. Analyzing data from a 5-year longitudinal study of 122 diabetic adults, researchers found that the use of electronic medical records (EMR) did not lead to improved clinical outcomes. While EMR use was associated with an increased frequency of testing for long-term blood glucose control and bad cholesterol levels, it did not improve glucose control among diabetic patients, which is a predictor of future risk of complications and increased health care costs. Impact of an Electronic Medical Record on Diabetes Quality of Care
By Patrick J. O’Connor, M.D., M.P.H., et al