OGT Patient Preparation and Pre-Test Requirements 2 — Questions and Answers
Question 1: Why is it important that the glucose load for an OGTT is consumed within a specific time window?
- To reduce nausea risk
- To standardize absorption rate for accurate results (Correct answer)
- To prevent hypoglycemia
- To allow earlier discharge
Correct answer: To standardize absorption rate for accurate results
Consuming the glucose solution within 5 minutes standardizes the rate of absorption, ensuring consistent and comparable test results.
Question 2: Which of the following illnesses would warrant postponing an OGTT?
- Common cold with mild congestion
- Acute febrile illness (Correct answer)
- Controlled hypertension
- Seasonal allergies
Correct answer: Acute febrile illness
Acute illness can cause stress-related hyperglycemia, which would invalidate OGTT results; the test should be rescheduled.
Question 3: What is the standard glucose load given to a non-pregnant adult during an OGTT?
- 50 g
- 75 g (Correct answer)
- 100 g
- 150 g
Correct answer: 75 g
The standard OGTT for non-pregnant adults uses a 75 g oral glucose load dissolved in water.
Question 4: Which instruction regarding water intake during the OGTT fasting period is correct?
- No fluids of any kind are allowed
- Plain water is permitted (Correct answer)
- Sports drinks are permitted
- Coffee without sugar is permitted
Correct answer: Plain water is permitted
Plain water is allowed during the fasting period and throughout the test, as it does not affect glucose metabolism.
Question 5: For how long after glucose ingestion are blood draws typically taken in a standard 2-hour OGTT?
- 30 minutes
- 60 minutes
- 120 minutes (Correct answer)
- 180 minutes
Correct answer: 120 minutes
In the standard 2-hour OGTT, blood is drawn at fasting baseline and again at 120 minutes post-ingestion.
Question 6: A patient vomits 10 minutes after consuming the glucose solution during an OGTT. What is the correct action?
- Continue the test and note the vomiting
- Reschedule the test on another day (Correct answer)
- Repeat the glucose solution immediately
- Draw blood early and estimate results
Correct answer: Reschedule the test on another day
If the patient vomits within 30 minutes of glucose ingestion, the test is considered invalid and must be rescheduled.
OGT Patient Preparation and Pre-Test Requirements 2
Why is it important that the glucose load for an OGTT is consumed within a specific time window?