A useful tube for anaesthesia during laryngeal microsurgery.

An endotracheal tube for use during anaesthesia for microsurgery of the larynx was made from a plastic endotracheal tube and an angiography connecting tube. It cannot be occluded, requires a minimum of space, and allows jet ventilation of the anaesthetized and paralysed patient. The value of a nitrous oxide-oxygen mixing valve in association with the tube is described.