Final answer:
The correct response to the scenario of a man lying prone with shallow breathing is to log roll him to a supine position while maintaining spinal precautions and to open his airway, not initiating CPR unless he's unresponsive and not breathing normally.
Step-by-step explanation:
You have arrived on scene to a call of a man down, and after assessing the situation, you have a man lying prone on the sidewalk with shallow breathing and a pulse of 112. The proper course of action would be option B: While maintaining c-spine precautions, log roll to a supine position and open his airway.
Maintaining the cervical spine in a neutral alignment is crucial to prevent further injury in case of spinal damage. Opening the airway is a priority to facilitate better respiration, especially given the shallow breathing at about 8 breaths per minute, which is lower than the normal adult rate of 12 to 20 breaths per minute. Being outside of a bar, the likelihood of traumatic injury or intoxication is high, making spinal precautions necessary. Providing CPR should only be initiated if the person is unresponsive and not breathing or only gasping, as per current guidelines.