A nurse is evaluating the blood glucose levels of a pregnant woman who has gestational diabetes after a glucose tolerance test.
Which of the following results indicates that the woman has impaired glucose tolerance?
Fasting blood glucose level of 95 mg/dL
One-hour blood glucose level of 185 mg/dL
Two-hour blood glucose level of 135 mg/dL
Three-hour blood glucose level of 105 mg/dL
The Correct Answer is B
The correct answer is choice B. One-hour blood glucose level of 185 mg/dL.
This indicates that the woman has impaired glucose tolerance, which is a risk factor for gestational diabetes. According to Mayo Clinic, a normal blood glucose level is lower than 140 mg/dL (7.8 mmol/L) after a glucose tolerance test.
A blood glucose level between 140 and 199 mg/dL (7.8 and 11 mmol/L) is considered impaired glucose tolerance,
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A. One hour.The nurse should check the newborn’s blood glucose level within one hour after birth because infants born to mothers with gestational diabetes are at risk of hypoglycemia due to increased insulin secretion in response to maternal-fetal hyperglycemia.Hypoglycemia can cause symptoms such as jitteriness, lethargy, poor feeding, cyanosis and apnea.
Checking the blood glucose level within one hour can help identify and treat hypoglycemia promptly.
Choice B. Two hours is wrong because it may delay the detection and treatment of hypoglycemia, which can have adverse effects on the newborn’s brain development.
Choice C. Three hours is wrong for the same reason as choice B. Choice D. Four hours is wrong for the same reason as choice B and C. Normal ranges for blood glucose levels in newborns vary depending on the method of measurement, but generally they are above 47 mg/dL.Some sources suggest a lower cutoff of 40 mg/dL.
Correct Answer is C
Explanation
The correct answer is choice C. Perform a glucose tolerance test.
A fasting blood glucose level of 100 mg/dL is considered borderline for gestational diabetes and indicates the need for further testing.
A glucose tolerance test measures how the body responds to a glucose load and can diagnose gestational diabetes.
Choice A is wrong because a fasting blood glucose level of 100 mg/dL is not normal for a pregnant woman and does not rule out gestational diabetes.
Choice B is wrong because repeating the test in one week will not provide any additional information and may delay the diagnosis and treatment of gestational diabetes.
Choice D is wrong because insulin is not prescribed unless the woman has confirmed gestational diabetes and fails to control her blood glucose levels with diet and exercise.
The normal range for fasting blood glucose in pregnancy is 70 to 95 mg/dL.
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