Difficulty: Easy

Average Score: 94%

Which of the following areas should a phlebotomist use for a capillary collection from a 2-month-old infant?

Rationale

Lateral section of the plantar heel

Capillary blood collection in infants requires specific anatomical knowledge to ensure accuracy and minimize discomfort. The lateral section of the plantar heel provides an optimal site for capillary puncture in 2-month-old infants due to its rich capillary network, accessibility, and reduced nerve endings compared to other areas.

A (Lateral section of the plantar heel) CORRECT

The lateral section of the plantar heel is a recommended site for capillary collection in infants due to its sufficient blood supply, ease of access, and lower nerve density, which minimizes pain and potential complications during the procedure.

B (Central area of the heel) YOUR ANSWER

The central area of the heel is not typically recommended for capillary collection in infants as it may pose a higher risk of hitting bone or encountering a dense network of nerves, potentially causing discomfort or complications during the procedure.

C (Posterior curvature of the heel) YOUR ANSWER

The posterior curvature of the heel is not an ideal site for capillary blood collection in infants as it lacks the optimal capillary density found in the lateral section of the plantar heel, which may result in inadequate sample volume or increased difficulty during the collection process.

D (Palmer surface of the distal phalanx) YOUR ANSWER

The palmar surface of the distal phalanx is not a suitable site for capillary collection in infants as it is located on the hand rather than the foot, and the density of capillaries in this area is not as conducive to successful blood sampling as the plantar heel.

Conclusion

In summary, selecting the lateral section of the plantar heel for capillary blood collection in a 2-month-old infant is crucial for ensuring a successful and less invasive procedure. Understanding the anatomical nuances of different collection sites helps phlebotomists optimize sample quality and patient comfort, especially in pediatric populations where precise techniques are essential for accurate results.

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