The art of anaesthesia . strils and prevent angulation of the catheters which areattached thereto. The catheters usually employed are French, velvet-eyed. Special catheters have been de-signed having open ends resembling a small rectal tube inconstruction. These, while efficient, are not entirely neces-sary. The length of the catheter to be used is equal to thedistance between the alas of the nose and the auditorymeatus. This distance carries the tube well into the pos-terior pharynx. If the tube is made too long it will enterthe oesophagus and dilate the stomach. It must be prop-erly lu
The art of anaesthesia . strils and prevent angulation of the catheters which areattached thereto. The catheters usually employed are French, velvet-eyed. Special catheters have been de-signed having open ends resembling a small rectal tube inconstruction. These, while efficient, are not entirely neces-sary. The length of the catheter to be used is equal to thedistance between the alas of the nose and the auditorymeatus. This distance carries the tube well into the pos-terior pharynx. If the tube is made too long it will enterthe oesophagus and dilate the stomach. It must be prop-erly lubricated or a nose bleed will result. The Administration.—The induction is usuallybrought about by the employment of a semi-open or closeddrop method. When the patient has entered the stage ofmaintenance, the vapor apparatus is started, the indicatorbeing placed at 60 or 70 mm. The catheters, well mois-tened with the patients saliva, are slipped gently into eachof the nostrils. If one is occluded, both catheters mav be. Fig. 78.—Intrapharyngeal inhalation with Fig. 79.—Intrapharyngeal inhalation withrebreathing, nasal method. rebreathing, oral method.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
