Final answer:
The nurse should prepare for a chest tube insertion to relieve a pneumothorax or hemothorax in a patient with a gunshot wound to the right side of the chest and severe shortness of breath.
Step-by-step explanation:
The nurse should immediately prepare for a chest tube insertion in a patient with a gunshot wound to the right side of the chest, severe shortness of breath, and decreased breath sounds on the right side of the chest. A chest tube insertion is necessary to relieve a pneumothorax or hemothorax, which can occur as a result of lung injury from the gunshot wound. Inserting a chest tube will help reexpand the lung and improve breathing.