Practice Quiz

NCLEX-RN

Category - Reduction of Risk

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Bailey May was recently diagnosed with diabetes mellitus type I. During client health teaching, the nurse explains the proper way of taking capillary blood glucose using a glucometer. Conditions that can alter the test result are also discussed. Which of the following should be done to prevent inaccurate results?
  1. Apply even pressure when expelling blood from the pinprick.
  2. Wipe the first drop of blood with cotton.
  3. Systematically select the site of the pinprick.
  4. Place the finger in a dependent position before pricking.
Explanation
Answer: B - An inaccurate result can be prevented by wiping the first drop of blood with cotton. The first drop of blood contains a greater amount of serous fluid compared with later blood. Option A is done to provide adequate amount of blood to the strip. Option C is done to prevent hematoma formation if the same site is used all the time. Option D increases blood flow to that area, ensuring an adequate amount of blood specimen.
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