Endotracheal intubation is a medical procedure that involves inserting a tube called an endotracheal tube into the trachea (windpipe). This is done to secure an airway, allowing for mechanical ventilation or to protect the airway from aspiration. It is typically performed in emergency situations, such as when a patient is unconscious or has difficulty breathing. The procedure involves visualizing the vocal cords using a laryngoscope, then inserting the endotracheal tube into the trachea and secu