PN Adult Medical Surgical Practice Exam

What is important for a client with diabetes when discussing HbA1c testing?

1. An HbA1c level below the expected range indicates ineffective glucose control

2. The expected range for HbA1c is 9.5% to 10%

3. HbA1c testing is used to diagnose diabetes mellitus

4. HbA1c results measure glucose control over the previous 3 months

The correct answer is: HbA1c results measure glucose control over the previous 3 months

The selected choice highlights a critical aspect of HbA1c testing in diabetes management. HbA1c, or glycated hemoglobin, reflects the average blood glucose levels over the previous two to three months. This test measures the percentage of hemoglobin molecules that have glucose attached to them, providing an overview of how well blood sugar has been controlled during that time period. This is especially important for clients with diabetes, as it helps healthcare providers assess long-term glucose control and make necessary adjustments to treatment plans. The other choices present inaccuracies or misconceptions. For example, stating that an HbA1c level below the expected range indicates ineffective glucose control misrepresents the goal of maintaining a lower HbA1c level, which is associated with better management of diabetes. Additionally, an expected range of 9.5% to 10% is not appropriate as most guidelines recommend a target of below 7% for many adults with diabetes. Lastly, while HbA1c can aid in diagnosing diabetes, it is not solely a diagnostic tool; its primary role is in monitoring long-term glucose management rather than initial diagnosis. Thus, the correct answer reinforces the importance of understanding HbA1c as a measure of glucose control over a significant period, which is