What position should a casualty with an abdominal wound be placed in immediately?

Placing a casualty with an abdominal wound on their back with their knees flexed is the correct approach because this position helps reduce tension on the abdominal muscles and can relieve pain. This positioning also aids in preventing further injury to the abdominal organs by keeping them in a more stable configuration. It can allow for a more passive state for the muscles of the abdomen, which may help in managing discomfort.

Additionally, positioning the casualty in this way can facilitate easier monitoring of their condition and readiness for medical evacuation or treatment. Generally, individuals with abdominal wounds should avoid positions that may increase stress on the abdomen, such as lying flat and straight or on their sides. Sitting upright might compromise their breathing and increase pressure on abdominal organs, while a face-down position is unsuitable due to the risk of further injury or obstruction.