[History of Tracheal Intubation: 4. Use for Cardiopulmonary Resuscitation-2].

In the mid 18th century, Monro, Kite, and others stared to perform tracheal intubation during cardiopul- monary resuscitation. In 1790's, it was found that tra- cheal intubation using Kite's device and method was technically difficult and, because of the design of the tube, an inserted tube might frequently obstruct the airway. During 1790's to 1820's, several people (Cole- man, Curry, Desgranges, Fine, De Sanctis, and Leroy) attempted to improve the design of a tracheal tube. In addition, Leroy invented a device to facilitate tracheal intubation. Despite these efforts, tracheal intubation during cardiopulmonary resuscitation was abandoned afterwards because of "unexpected" reasons.