Question

A woman at 26 weeks' gestation is undergoing screening for diabetes with a 1-hour oral glucose challenge test. On the client's return visit, the nurse anticipates the need to schedule a 3-hour glucose challenge test based on which result of the previous test?

A) 130 mg/dL
B) 146 mg/dL
C) 100 mg/dL
D) 114 mg/dL

Answer 1

The correct result that would require a 3-hour glucose tolerance test after a 1-hour oral glucose challenge test in a pregnant woman at 26 weeks is 146 mg/dL because it exceeds the normal threshold of 130 mg/dL. Therefore, the correct option is b.

Step-by-step explanation:

A woman at 26 weeks' gestation who is undergoing screening for diabetes with a 1-hour oral glucose challenge test would need to schedule a 3-hour glucose tolerance test if her blood glucose level from the previous test was 146 mg/dL. This number is significant as normal blood glucose levels after a 1-hour glucose challenge test should not exceed 130 mg/dL. Blood glucose levels that rise above this threshold, as in the case of the result being 146 mg/dL, indicate potential gestational diabetes, requiring further testing to confirm the diagnosis. Therefore, the correct option is B) 146 mg/dL. In individuals without diabetes, blood glucose levels should return to normal within 2–2.5 hours after glucose ingestion, while in individuals with diabetes, blood glucose levels may not normalize even after this time.