Blood Glucose Monitoring - NCLEX Pn

1. Which statement best describes the correct order for donning PPE for a fingerstick glucose test?

   Gloves are required before skin puncture and blood handling. Gloves protect against bloodborne pathogens, donned after hand hygiene but before any invasive procedure involving blood exposure.

2. What is the correct action to reduce pain during capillary blood glucose sampling?

   Use the side of the fingertip and appropriate lancet depth. This technique targets less sensitive areas and controls penetration to minimize tissue trauma and discomfort during sampling.

3. What is the safest action if the fingertip is still wet with alcohol when ready to lance?

   Wait until the site is fully dry. Residual alcohol can hemolyze red blood cells or dilute the sample, leading to inaccurate glucose measurements.

4. What is the primary purpose of bedside capillary blood glucose monitoring?

   To rapidly assess current glucose level for immediate clinical decisions. Bedside capillary monitoring provides quick, point-of-care results essential for timely management of hypo- or hyperglycemia in clinical settings.

5. Which patient identification practice is required before obtaining a bedside glucose reading?

   Use two patient identifiers per facility policy. Two identifiers prevent errors in patient care, ensuring the glucose reading is associated with the correct individual per safety standards.

6. What is the correct skin antisepsis for a fingerstick glucose test?

   Clean with alcohol and allow to air-dry completely. Alcohol reduces microbial load, and air-drying prevents dilution of the blood sample that could skew glucose readings.

7. What is the most important immediate nursing priority when glucose is low with symptoms present?

   Treat hypoglycemia promptly per protocol. Symptomatic low glucose poses immediate risks like seizures, necessitating rapid correction to stabilize the patient.

8. Which step is correct after lancing if the first drop of blood is contaminated by alcohol or lotion?

   Wipe away the first drop and use the next drop. The first drop may contain excess tissue fluid or contaminants, so discarding it ensures a purer capillary blood sample for testing.

9. Which disposal method is correct for a used lancet after a fingerstick glucose test?

   Immediately discard in an approved sharps container. Sharps containers prevent needlestick injuries and comply with biohazard waste regulations for safe disposal of contaminated items.

10. Which patient condition can make capillary fingerstick glucose less reliable than venous plasma glucose?

    Poor peripheral perfusion (for example, shock or severe dehydration). Reduced blood flow in such conditions can lead to discrepancies between capillary and venous glucose levels due to altered perfusion.

11. Which statement is correct regarding lancet use for blood glucose monitoring?

    Use a new single-use lancet for each puncture. Single-use lancets prevent cross-contamination and infection, aligning with infection control guidelines for each procedure.

12. What is the correct action if the patient has visible food or dirt on the hands before testing?

    Wash with soap and water, then dry thoroughly. Washing removes contaminants that could interfere with the glucometer's accuracy or cause false glucose level alterations.

13. What is the correct action if the glucometer displays an error or "HI/LO" reading?

    Repeat per device policy and notify provider; confirm with lab if indicated. Errors or extreme readings may indicate device malfunction or critical values, requiring retesting and escalation for patient safety.

14. What is the correct action if the test strip does not fully fill with blood on the first attempt?

    Discard the strip and repeat with a new strip. Incomplete filling may cause erroneous results, so a new strip ensures proper blood volume for accurate glucometer analysis.

15. Which patient site is preferred for routine capillary fingerstick glucose testing in adults?

    Lateral side of the fingertip pad. This site minimizes pain by avoiding central nerve-dense areas while ensuring adequate blood flow for accurate sampling.

16. Which documentation elements are essential after a bedside blood glucose check?

    Value, time, site, interventions, and patient response. Comprehensive documentation supports continuity of care, legal requirements, and evaluation of treatment effectiveness.

17. What is the correct action if a lancet accidentally sticks the nurse's finger after use on a patient?

    Wash the area and follow facility exposure protocol immediately. Immediate washing minimizes infection risk, and following protocol ensures proper reporting and post-exposure prophylaxis if needed.

18. Which clinical finding is most consistent with hypoglycemia rather than hyperglycemia?

    Diaphoresis with shakiness and confusion. These adrenergic symptoms result from the body's counter-regulatory response to low blood sugar, distinguishing it from hyperglycemic signs.

19. Which action is appropriate when a bedside glucose value is inconsistent with symptoms?

    Recheck and confirm with a laboratory plasma glucose if needed. Inconsistencies may indicate device error or physiological factors, requiring verification to guide appropriate clinical interventions.

20. Which finger should be avoided for routine capillary blood glucose checks when possible?

    Thumb (and index finger when possible). These fingers are more prone to calluses and sensitivity due to frequent use, potentially affecting sample quality and patient comfort.

21. What is the correct first action before performing any blood glucose check?

    Perform hand hygiene. Hand hygiene prevents cross-contamination and infection, adhering to standard infection control protocols before patient contact.

22. What technique should be avoided because it can falsely alter capillary glucose results?

    Excessive squeezing or "milking" of the finger. This can introduce interstitial fluid or cause hemolysis, leading to falsely low glucose readings in capillary samples.

23. Which action is correct if the patient's hands are cold and poorly perfused before a fingerstick?

    Warm the hand to improve perfusion before sampling. Warming enhances vasodilation and blood flow, improving sample quality and accuracy in capillary glucose testing.

24. Which action is appropriate if bleeding continues after the fingerstick is completed?

    Apply firm pressure with clean gauze until bleeding stops. Firm pressure promotes hemostasis without contaminating the site, preventing hematoma formation or prolonged bleeding.

25. Which clinical finding is most consistent with hyperglycemia rather than hypoglycemia?

    Polyuria with polydipsia and dry mucous membranes. These osmotic diuresis symptoms occur due to high glucose pulling fluid into urine, unlike the neuroglycopenic effects of low glucose.

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