<prompt> In infant full term diameter mm length cm of ETT used are3.5, 167,123.5, 127,10  <response>: C i.e. 3.5 mm, 12 cm Endotracheal Intubation Endotracheal tube is sterilized by boilingQ and cuffed E.T. tube is inflated at pressure 15-22 mmHg In neurosurgical operations Armoured Endotracheal tubeQ is used. For quick intubation, DOC is Suxamethonium.Q 