Which of the following may be used to facilitate a bronchoscopy while providing mechanical ventilatory support?

The Bodai adapter is a device that can facilitate bronchoscopy while a patient is on mechanical ventilatory support. It is specifically designed to allow access to the airway while minimizing interruptions in ventilation. This adapter connects between the ventilator and the endotracheal tube, creating a port that can be used for bronchoscopic procedures without significantly impacting the flow of gases to the patient.

In the context of mechanical ventilation during bronchoscopy, maintaining adequate ventilation is critical, and the Bodai adapter is engineered to accommodate this necessity.

Other devices listed, such as the King airway, fenestrated tracheostomy tube, and Combitube, each serve distinct functions and may not provide the same kind of uninterrupted access and ventilatory support during a bronchoscopy. The King airway is primarily used for airway management but does not facilitate bronchoscopy, while the fenestrated tracheostomy may allow airflow but can complicate the ventilation process during a procedure. The Combitube is an alternative airway device that can be used in emergencies but is not specifically designed for facilitating bronchoscopy in a mechanically ventilated patient. Therefore, the Bodai adapter is the most suitable option for this purpose.