Final answer:
To treat a client with right pleural effusion, a thoracentesis tray should be available for immediate use by the physician, as it contains the necessary tools for removing fluid from the pleural space.
Step-by-step explanation:
The nurse is caring for a client with right pleural effusion that needs to be treated. To assist the physician, the nurse should have a thoracentesis tray available for immediate use. A thoracentesis is a procedure where a needle is inserted into the pleural space to remove fluid, such as in the case of a pleural effusion. An ABG kit, or arterial blood gas kit, is used for measuring the amounts of oxygen and carbon dioxide in the blood and is not specifically required for a thoracentesis. An intubation kit would be necessary if the patient were in respiratory distress and needed mechanical ventilation, which is not indicated solely by the presence of a pleural effusion. A paracentesis tray is used for removing fluid from the peritoneal cavity, not the pleural space. Therefore, the correct item the nurse should have available is the thoracentesis tray.