The oesophageal detector device

Corrcsponu'ence as the first.was placed in the oesophagus.A further 5 ml air was injccted briskly into the tracheal tubc.with the oesophageal tube still deflated, and the front of the neck palpated.This cuff was then returned to its previous state and 5 ml air injected into the oesophageal tube, again while palpating thc front of thc neck.Finally, the cuff of the tracheal tube was deflated completely and the oesophageal tube tcstcd as before with 5 ml air.