Intubation and Endotracheal Tubes Intubation is a medical procedure that involves inserting a tube into a patient's airway to ensure they can breathe properly. This process is commonly performed in emergencies, surgeries, or when a patient cannot breathe independently due to illness or injury. What is Intubation? Intubation involves placing a flexible tube, called an endotracheal tube (ET tube), through the mouth or nose and into the trachea (windpipe). This tube helps keep the airway open and d