Difficulty: Easy

Average Score: 83%

When a phlebotomist performs a heel stick for the purposes of obtaining a PKU test, it is important to

Rationale

Wipe away the first drop of blood.

Wiping away the first drop of blood is crucial during a heel stick for a PKU test because the initial drop may contain tissue fluid, which can dilute the sample and lead to inaccurate test results.

A (Wrap the site with a heel warmer for 30 min.) YOUR ANSWER

While warming the site can help with blood flow, wrapping the site with a heel warmer for 30 minutes is not a standard practice for PKU testing. The focus should be on obtaining a clean, accurate sample rather than prolonging the warming process.

C (Keep a pressure dressing on the site for the day.) YOUR ANSWER

Applying a pressure dressing for an extended period is unnecessary and could cause discomfort or complications. The main aim is to ensure the sample is collected correctly, and a pressure dressing is not required after the heel stick procedure.

D (Target the central arch area of the foot for the least amount of discomfort.) YOUR ANSWER

While targeting the correct area is important for minimizing discomfort, the central arch is not typically the recommended site for heel sticks. The medial or lateral aspect of the heel is preferred for safety and effectiveness in blood collection.

Conclusion

In summary, when performing a heel stick for a PKU test, it is essential to wipe away the first drop of blood to ensure sample integrity. Other practices, such as warming the site, applying pressure dressings, or targeting specific areas, do not directly address the primary concern of obtaining an accurate blood sample. Proper technique is paramount to ensure reliable PKU test results.

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