What should you do for an intoxicated patient who is responding by moaning and has vomit in his mouth?

Turning the patient on their side is the most appropriate action in this scenario. When an intoxicated patient is responding by moaning and has vomit in their mouth, there is a significant risk of aspiration, which can lead to serious respiratory complications. Placing the patient in a lateral position helps to keep the airway clear and allows any vomit to drain out, thus preventing it from being inhaled into the lungs.

This positioning is also beneficial because it reduces the likelihood of the patient choking if they continue to vomit. In emergency medical situations, maintaining airway patency is critical, especially for patients who are not fully conscious or alert.

Turning the patient onto their back would increase the risk of aspiration. An upright position, while it might seem to assist in airway management, could also lead to a higher likelihood of choking in an unresponsive patient. Starting CPR is not warranted unless there is an absence of breathing and circulation, which does not seem to be indicated here, given that the patient is still responsive with moaning. Therefore, placing the patient on their side is the best choice to ensure their safety while awaiting further medical assistance.