NORCET-11 Prelims
Biochemistry & Nutrition
Easy
Convert a patient's HbA1c value of 7% into estimated average glucose in mg/dL.
Appeared in: NORCET-11 Prelims
Explanation
- The formula for eAG is: eAG (mg/dL) = 28.7 × HbA1c (%) − 46.7.
- For HbA1c 7%, eAG = 28.7 × 7 − 46.7 = 155.2 mg/dL, which rounds to 154 mg/dL.
- Standard tables confirm 7% HbA1c equals 154 mg/dL eAG.
- This conversion helps patients understand their long-term glucose control.
Why Other Options Were Wrong
- Option A: 158 mg/dL is slightly higher than the calculated eAG for 7% HbA1c. This value does not match the standard conversion tables.
- Option C: 150 mg/dL underestimates the eAG for 7% HbA1c. It is lower than the value given in standard references.
- Option D: 145 mg/dL is too low for a 7% HbA1c. This value does not align with the standard conversion formula or tables.
Related Visual
Clinical Relevance
- Nursing practice connection: Use the key finding related to Conversion of HbA1c to estimated average glucose (eAG) to guide bedside assessment, documentation, and the next nursing action.
- Nurses use eAG to explain long-term glucose control to patients in familiar units (mg/dL).
- Helps in assessing the effectiveness of diabetes management plans.
- What if? If the patient's HbA1c was 8%, the eAG would be approximately 183 mg/dL, indicating poorer glycemic control and the need for intervention.
How to Approach the Question
- Recall the standard formula for converting HbA1c to eAG.
- Substitute the given HbA1c value into the formula.
- Calculate and match the result to the closest option.
- Use standard reference tables if available for confirmation.
Concept Tested & Keywords
- Concept Tested: Conversion of HbA1c to estimated average glucose (eAG)
- Stem keywords: HbA1c value, 7%, estimated average glucose, mg/dL
- Lead-in keywords: convert, calculate
- Clinical cues: HbA1c 7% is a common target for diabetes control
Question ID
QTmAkyStb3YPQfFRtG659C
Reference Book
E6 Textbook of Biochemistry for medical StudentsDM Vasudevan Part 1 (pp 26-370 of 370) p. 201-203
Practise the full NORCET-11 Prelims
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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