A patient is intubated and placed on continuous mechanical ventilation. Which equipment is most important for the nurse to keep at this patient's bedside?

Choice C rationale For any patient relying on continuous mechanical ventilation, the manual resuscitation bag, or bag-valve-mask, is the most critical piece of emergency equipment. In the event of a ventilator malfunction, power failure, or accidental extubation, the nurse must be able to provide immediate manual breaths to maintain oxygenation and ventilation. This tool bypasses the machine and ensures that the patient does not suffer from rapid hypoxia or hypercapnia during a crisis or equipment failure. Choice A rationale A pulse oximeter is a vital monitoring tool used to assess the peripheral oxygen saturation of a patient, with a normal range typically between 95. Choice B rationale A nasal cannula is a low-flow oxygen delivery device used for patients who are breathing spontaneously and require supplemental oxygen, typically delivering concentrations between 24. Choice D rationale A chest tube drainage set-up is used to manage pneumothorax or pleural effusions by restoring negative pressure to the pleural space. While mechanical ventilation carries a risk of barotrauma which could lead to a pneumothorax, it is not the most immediate bedside requirement for every intubated patient. The manual resuscitation bag takes priority because respiratory arrest from ventilator failure is a more immediate and universal threat to the intubated patient than the specific complication of a collapsed lung.