A manual of diseases of the nose and throat . drogen dioxide. An excellent light is necessary in order that the pos-terior portion of the nasal cavities may be well illumi-nated. Those who are ambidextrous will find it mostconvenient to make the primary incision in that nasalcavity to which the convexity is directed—that is, ifthe convexity is directed into the right nasal cavity, theincision should be on the right side of the septum andrice versa. Those who are right-handed will find itmore convenient to make the primary incision on theleft side of the septum. The incision should be made with
A manual of diseases of the nose and throat . drogen dioxide. An excellent light is necessary in order that the pos-terior portion of the nasal cavities may be well illumi-nated. Those who are ambidextrous will find it mostconvenient to make the primary incision in that nasalcavity to which the convexity is directed—that is, ifthe convexity is directed into the right nasal cavity, theincision should be on the right side of the septum andrice versa. Those who are right-handed will find itmore convenient to make the primary incision on theleft side of the septum. The incision should be made with a narrow-bladed,very sharp knife; it is best begun at the junction ofthe mucous membrane and epithelium surfaces of the 132 DISEASES OF THE NOSE. septum at the floor of the nasal cavity and carriedupward, following the line of junction of the mucousmembrane and skin surfaces of the septum ; in otherwords, about an eighth of an inch within the vestibuleof the nose and terminating near the upper portion ofthe septum. (See Fig. 32.) Fig. Head tilted to left, retractor holding back ala. Line of primary incision onright side of septum. The incision should be deep enough to penetrate thelayers of the mucous membrane and just enter the carti-lage of the septum. Care must be taken that the inci-sion be not carried through the whole extent of cartilageand mucous membrane into the other nasal cavity. Ifthe incision is made nearer the anterior portion of thenose than indicated, it will be through the portion of theline of stratified epithelium by which cocain is notabsorbed, and be very painful. A Killian sharp ele-vator (Fig. 33) is next introduced and the mucous mem-brane lifted up from the cartilage in the upper this place it is least adherent and most easily lifting up the membrane posteriorly for a distance DEFORMITIES OF THE SEPTUM. 133 of a quarter of an inch the sharp elevator may be re-placed by a blunt one (Fig. 34), and it will be foundcomparativ
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherne, booksubjectnose
