Glycosylated hemoglobin (HbA1C) test measures the average blood glucose control of an individual over the previous three months. Which of the following values is considered a diagnosis of pre-diabetes?

1. A

   6.5-7%

2. B

   5.7-6.4%

3. C

   5-5.6%

4. D

   5.6%

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2015

Explanation

• Glycosylated hemoglobin (HbA1c) reflects average blood glucose over the past 2-3 months.
• According to the American Diabetes Association (ADA), the diagnostic range for pre-diabetes is an HbA1c level between 5.7% and 6.4%.
• This range indicates that blood glucose levels are elevated above normal but have not yet reached the threshold for a diabetes diagnosis.
• Individuals in this pre-diabetic range are at a significantly higher risk of developing type 2 diabetes and cardiovascular disease in the future.

Why Other Options Were Wrong

• Option A: An HbA1c level of 6.5% or higher is the diagnostic criterion for diabetes mellitus, not pre-diabetes.
• Option C: An HbA1c range of 5.0% to 5.6% falls within the normal, non-diabetic range.
• Option D: An HbA1c value of 5.6% is at the upper end of the normal range (less than 5.7%). It does not meet the threshold for a pre-diabetes diagnosis, which starts at 5.7%.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to HbA1c diagnostic criteria for pre-diabetes to guide bedside assessment, documentation, and the next nursing action.
• Identifying pre-diabetes is a critical nursing function as it provides a window of opportunity for patient education on lifestyle modifications (diet, exercise) to prevent or delay the onset of type 2 diabetes.
• Nurses play a key role in explaining the meaning of the HbA1c result to patients, emphasizing that it reflects long-term control, not just a single day's blood sugar.
• What if? If a patient's HbA1c is 6.5%, the nursing priority shifts from prevention (pre-diabetes) to management (diabetes). The nurse would then focus on education about medication adherence, blood glucose self-monitoring, and recognizing signs of hypo/hyperglycemia.

How to Approach the Question

• First, identify the key concept in the question: the specific lab value range for 'pre-diabetes' using the 'HbA1c' test.
• Recall the standard diagnostic criteria for HbA1c. It's helpful to remember three key thresholds: the top of normal, the start of pre-diabetes, and the start of diabetes.
• The normal range is less than 5.7%.
• The pre-diabetes range starts at 5.7% and goes up to 6.4%.
• The diabetes diagnosis starts at 6.5%.
• Compare these recalled ranges with the given options to find the correct match for pre-diabetes.

Concept Tested & Keywords

• Concept Tested: HbA1c diagnostic criteria for pre-diabetes
• Stem keywords: Glycosylated hemoglobin, HbA1C, pre-diabetes, blood glucose control
• Lead-in keywords: Which of the following values
• Negative lead-in flag: false

Question ID

Q0ba0H81GsPDRdd7Ajznqb

Copy ID

Reference Book

E6 Pharmacology Katzung 16e p. 1173-1175

E6 PATHOLOGY QUICK REVIEWBased on Harsh Mohan Textbook of PATHOLOGY p. 251-253