Prospective Study to Evaluate Mapleson Circuit With Monitored Anesthesia Care During Endobronchial Ultrasound (EBUS) Bronchoscopy

The Mapleson Circuit is a breathing system used to deliver oxygen and remove carbon dioxide during anesthesia. It consists of fresh oxygen flow, a reservoir bag, an expiratory valve, tubing, and a connection to the patient. There are different types of Mapleson circuits depending on the different arrangements of its components. We plan to use a Mapleson D circuit attached to a nasal trumpet via a connector.