Certified Nurses Operating Room (CNOR) Practice Exam

What is the recommended position for the arms in the prone position to best practice nerve protection?

1. Arms above head

2. Arms crossed over chest

3. Arms at sides

4. Arms tucked under the body

The correct answer is: Arms at sides

Positioning the arms at the sides when a patient is in the prone position is essential for ensuring nerve protection during surgical procedures. This method minimizes the risk of nerve compression or stretching, particularly of the brachial plexus, which can occur when the arms are placed improperly. When arms are by the sides, there is less tension and potential for injury to the nerves that run from the neck to the arm, as well as to the shoulders and upper back areas. In contrast, arms above the head could lead to upward stretching of nerves in the shoulder region, potentially causing strain or injury. Crossing the arms over the chest may also create pressure points and can risk compressing vital nerves in forearms and wrists. Tucking the arms under the body is similarly problematic, as it may subject them to pressure from the body weight, increasing the likelihood of nerve damage or circulation issues. Thus, maintaining the arms at the sides is recognized as the safest position for protecting nerve function in the prone position.