Why is it important to push away loose clothing near a casualty's open wound before applying a dressing?

When managing a casualty's open wound, pushing away loose clothing is crucial primarily to assess the extent of the wound clearly. This step allows the responder to visually inspect the injury for size, depth, and any foreign objects that may be embedded in the wound. By having a clear view, the responder can better determine the necessary treatment, such as the appropriate type of dressing to apply and the urgency of further medical assistance.

Additionally, removing loose clothing helps to avoid unintended pressure on the wound area, which can cause further injury or discomfort. While keeping the area clean and minimizing the risk of infection are also important considerations in wound management, the ability to see the wound clearly is essential for effective and informed treatment decisions.