Regarding oesophagoscope true are
oesophagoscopy is of 3 types mainly, that is 1)rigid 2)flexible 3)transnasal it is performed under general anaesthesia with orotracheal intubation with a tube in the left corner of the mouth.The patient lies supine, the head is elevated by 10 -15 cm, neck flexed on the chest and head extended at the atlantooccipital joint.The purpose of this position is to attain the axis of mouth, pharynx, oesophagus, in a straight line to pass the tube easily.This position can be achieved with the help of special headrest.four basic steps include, 1)identification of arytenoids 2)passing the cricopharyngeal sphincter 3)crossing the aoic arch and left bronchus 4)passing the cardia ref: diseases of ear, nose and throat, PL Dhingra,6 th ed, pg no 427
Incisor acts as fulcrum
Compresses posterior tongue
Lifts epiglottis
Tip is in pyriform fossa
G.I.T