Difficulty: Medium

Average Score: 67%

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

This area is recommended for capillary collection in infants due to its safety and accessibility. The lateral section of the plantar heel minimizes the risk of nerve damage and provides an adequate blood supply for testing.

A (Lateral section of the plantar heel) CORRECT

This is the preferred site for capillary blood collection in infants because it is safe and effective. The lateral area of the heel avoids major nerves and arteries, making it less likely to cause complications while ensuring a sufficient blood sample can be obtained.

B (Central area of the heel) YOUR ANSWER

The central area of the heel is not recommended for capillary collection due to the proximity of larger nerves and blood vessels, which increases the risk of injury during the procedure. This area may also provide less reliable blood flow for accurate testing.

C (Posterior curvature of the heel) YOUR ANSWER

Collecting blood from the posterior curvature of the heel is discouraged as it can lead to complications including pain or nerve damage. Additionally, this area may contain more adipose tissue, making it challenging to obtain an adequate sample.

D (Palmer surface of the distal phalanx) YOUR ANSWER

While the palm or fingers can be used for capillary collections in older children and adults, the distal phalanx is not ideal for infants, especially at 2 months old. This area may be too small and difficult to access, leading to inadequate sample size and increased risk of injury.

Conclusion

For capillary blood collection from a 2-month-old infant, the lateral section of the plantar heel is the safest and most effective choice. This site minimizes risks associated with nerve damage and ensures a sufficient blood supply, making it the optimal choice compared to the other options, which present higher risks or inadequate sample collection.

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