Preparatory and after treatment in operative cases . wound (Fig. 216). This moistens thegauze and permits of its more easy removal. However, in someinstances the dry crust consisting of blood and antiseptic powderis rather tenacious, and the measure indicated is not these instances force should not be used, but a glass syringe isfilled with hydrogen peroxid and the latter injected under theedge of the adherent gauze. The effervescence which occurs asthe outcome of the contact of the secretions and the peroxid ofhydrogen will usually gently lift the gauze from the wound with-out gi
Preparatory and after treatment in operative cases . wound (Fig. 216). This moistens thegauze and permits of its more easy removal. However, in someinstances the dry crust consisting of blood and antiseptic powderis rather tenacious, and the measure indicated is not these instances force should not be used, but a glass syringe isfilled with hydrogen peroxid and the latter injected under theedge of the adherent gauze. The effervescence which occurs asthe outcome of the contact of the secretions and the peroxid ofhydrogen will usually gently lift the gauze from the wound with-out giving any pain to the patient. If necessary the injection EXPOSING THE WOUND 303 may be several times repeated if the first application Joes notsuffice. The habit of forcibly tearing the dressings from wounds is tobe deprecated, not alone on the ground that unnecessary pain isinflicted, but because the trauma, slight as it is, to the edges ofthe wound favors late infection and delay in repair. After the last piece of gauze has been removed the wound. Fig. ,216.—Gauze in Contact with Wound. and surrounding skin is cleansed with the carbolic acid or corro-sive sublimate solution, using for the purpose the gauze wipesor tabs of cotton. Care should be exercised in this connectionnot to wipe the wound with a sponge which has been used forcleansing of the surrounding skin or vice versa, , after thewound has been wiped the sponge is thrown aside and a fresh oneused. This also applies to sponges used on the neighboring rationale of this precaution is obvious. Too frequently willthe interne or nurse swab the skin and then apply the soiledsponge to the wound. This is a fair way to introduce infectioninto the wound. If the quantity of secretion be large, the cleansing of the partsmay be supplemented by irrigation with corrosive sublimate solu-tion. However, it is best not to employ this measure relying moreupon the former method. 304 CARE OF WOUNDS AFTER OPERATIONS REMOVAL O
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