Question

When is screening for gestational diabetes performed, and which test is used?

a) Screening is performed at 12-16 weeks of gestation with an oral glucose tolerance test (OGTT).
b) Screening is performed at 24-28 weeks of gestation with a fasting blood glucose test.
c) Screening is performed at 8-12 weeks of gestation with a hemoglobin A1c test.
d) Screening is not routinely performed during pregnancy.

Answer 1

Gestational diabetes screening occurs at 24-28 weeks using a GTT, where the expectant mother's ability to tolerate oral glucose is assessed to diagnose gestational diabetes.

Step-by-step explanation:

Screening for gestational diabetes is typically performed at 24-28 weeks of gestation with a glucose tolerance test (GTT). During this test, the expectant mother is kept on a carbohydrate-rich diet for three days prior to the test, then her fasting blood glucose is measured. Afterward, she is given an oral dose of glucose, and her blood glucose levels are estimated at intervals to assess her ability to tolerate glucose. The results help diagnose gestational diabetes by observing for hyperglycemia, which indicates the individual's glucose intolerance. If the results are positive, indicating gestational diabetes, further investigations may be required to manage the condition.