In case of a ?Cannot Intubate ? Cannot mask Ventilate? (CI-CV) situation, where the end-game is to intubate the patient, the Ambu Aura-i can be used as conduit for direct endotracheal intubation assisted by a flexible scope (such as the Ambu aScope). The airway tube is designed to allow easy passage of an appropriately sized ET-tube. The recommended ET-tube size is indicated on the connector block of the mask.