Question 23

Lateral section of the plantar heel

For capillary collection in a 2-month-old infant, the lateral section of the plantar heel is the recommended area due to its safety and effectiveness in avoiding damage to bone and nerves.

A) Lateral section of the plantar heel

This option is correct because the lateral section of the plantar heel is specifically designed for capillary blood collection in infants. It is the safest site that minimizes the risk of injury to deeper structures, making it ideal for this age group.

B) Central area of the heel

The central area of the heel is not recommended for capillary collection in infants because it is closer to the bones and nerves, thereby increasing the risk of injury. This area can lead to complications such as pain and infection.

C) Posterior curvature of the heel

The posterior curvature of the heel is also inappropriate for capillary collection as it poses a higher risk of hitting the calcaneus (heel bone) and can lead to complications. This area does not provide a safe or effective means of obtaining blood samples in infants.

D) Palmer surface of the distal phalanx

The palmer surface of the distal phalanx is not suitable for capillary collection in infants. This area is typically used for adults and older children, as it can be more difficult to access and poses a risk of injury in younger infants.

Conclusion

The lateral section of the plantar heel is definitively the safest and most effective site for capillary blood collection in a 2-month-old infant, as it avoids complications associated with deeper structures. All other options present higher risks of injury or are not appropriate for the infant population, confirming that option A is the best choice.