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Which of the following actions should a medical assistant take when performing a capillary puncture?

Rationale

Puncture parallel to the fingerprint.

When performing a capillary puncture, it is essential to puncture the skin parallel to the fingerprint lines to minimize tissue damage and ensure optimal blood flow. This technique helps reduce the risk of hemolysis and allows for a more efficient blood collection.

A (Wipe away the first five drops of blood after puncturing.) YOUR ANSWER

This choice is incorrect because while it is standard practice to wipe away the first drop of blood to remove contaminants, it is not necessary to wipe away five drops. In fact, excessive wiping can lead to loss of valuable sample and may introduce unnecessary complications.

B (Apply even pressure to the finger during the collection.) YOUR ANSWER

While it's important to apply consistent pressure during a capillary collection, this choice is misleading because applying pressure should be done before and during the puncture to promote blood flow, not as a standalone action during the collection itself. Proper technique involves puncturing and then allowing blood to flow freely without excessive pressure.

C (Puncture the index finger at the tip.) YOUR ANSWER

This option is incorrect as the tip of the finger is often too sensitive and can lead to excessive pain or discomfort for the patient. Instead, the puncture should be made slightly off-center on the side of the finger to enhance comfort and still allow for adequate blood collection.

Conclusion

In a capillary puncture, the correct technique involves puncturing parallel to the fingerprint to optimize blood flow and minimize complications. The other options either misrepresent best practices or overlook essential details necessary for effective blood collection. Understanding the correct methodology is crucial for medical assistants to ensure patient safety and the integrity of the blood sample.

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