A text-book of the diseases of the ear and adjacent organs . is bound to observe, not only for theabsolute safety of the patient, but also to abolish any possiblefear of infection on the part of the patient. Doctors with asmall practice, who only have a limited number of instru-ments at their disposal, should invariably cleanse the instru-ments themselves. Directly after the use of the catheter, itshould be placed in a solution of corrosive sublimate (1: 1000),from which it should not be removed until the following day,when, in addition to being washed in warm water andthoroughly syringed out,


A text-book of the diseases of the ear and adjacent organs . is bound to observe, not only for theabsolute safety of the patient, but also to abolish any possiblefear of infection on the part of the patient. Doctors with asmall practice, who only have a limited number of instru-ments at their disposal, should invariably cleanse the instru-ments themselves. Directly after the use of the catheter, itshould be placed in a solution of corrosive sublimate (1: 1000),from which it should not be removed until the following day,when, in addition to being washed in warm water andthoroughly syringed out, the beak should be carefully wipedout with a piece of fine linen. Instruments which have beenused on persons well known to be infected must on noaccount be used again. 3. Method of Catheterizing the Eustachian Tube. Of the numerous methods which have been recom-mended for the performance of catheterization, twocakiti Cath- specially deserve a detailed description because in eter or Me- carrying them out fixed anatomical relations serve asdicm METHOD OF CATHETERIZIXG THE EUSTACHIAN TUBE. 93 guides for the introduction of the catheter into the tube, andbecause they have proved, from experience gained in practicalclasses, not only to be safest, but also to supplement oneanother. The anatomical guides in question are the posterior lipof the tube together with the rigidly extended plica-salpingo-pharyngea and the posterior margin of the septum of the nose. Catheterization of the Eustachian tube, in order to avoid painfulsensation to the patient, must be performed with the greatest is my opinion that the operation should be carried out in thesitting position. Patient and surgeon should be so placed that thetable, on which the necessary instruments are placed, is to the rightof the surgeon. It will be found as well to use a high-backed chairso that the patients head may not slip too far backwards during theoperation. To introduce the catheter with as little unple


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Keywords: ., bookcentury1800, bookdecade1890, booksubjecteardiseases, bookyear