The nurse is assisting the healthcare provider with a thoracentesis for a client who has emphysema. Which equipment should the nurse have at the bedside in the event the procedure is ineffective?

A. Chest tube insertion tray: Thoracentesis may lead to complications like pneumothorax, especially in clients with lung disease such as emphysema. If air or fluid reaccumulates or lung collapse occurs, a chest tube may be urgently required to re-expand the lung and drain air or fluid buildup. B. Intubation tray: While intubation may be needed in cases of severe respiratory failure, it is not the first-line equipment after an ineffective thoracentesis. It would only be used if the patient is unable to breathe adequately despite other interventions. C. Ventilator: Mechanical ventilation is not immediately needed for a failed thoracentesis unless the client develops respiratory failure. It is a secondary measure if oxygenation cannot be maintained with basic support. D. Crash cart: A crash cart is essential during cardiac arrest or life-threatening emergencies. It is not the most appropriate equipment to have specifically for an ineffective thoracentesis unless severe complications arise suddenly.