Which of the following techniques should a medical assistant use when bandaging a wound with a roller bandage?

When bandaging a wound with a roller bandage, the technique of wrapping from distal to proximal is essential for several reasons. Wrapping the wound in this manner helps promote venous return and circulation in the limb. By starting at the distal end (the part of the limb furthest from the heart) and moving towards the proximal end, the bandage assists in preventing swelling and encourages blood flow back towards the heart.

This technique is particularly important in areas such as the lower extremities, where there is a risk of venous stasis and pooling of blood if the bandage is applied in the opposite direction. Additionally, wrapping in a distal-to-proximal fashion allows the bandage to better support the wound while avoiding potential constriction that could occur if the bandage were applied too tightly or improperly.

In contrast, other techniques like wrapping from proximal to distal can hinder blood flow, potentially leading to complications such as decreased circulation. Wrapping horizontally around the limb does not provide adequate support or coverage for the wound. Similarly, wrapping only in a circular motion may not cover the wound sufficiently or securely, allowing for movement and possibly exposing the wound to contaminants.