. Electricity : its medical and surgical applications, including radiotherapy and phototherapy . ed to produce an alterative effect upon pathologicalconditions of the mucosa, to reduce redundant tissue and fibrous stric-tures, and to destroy tumors and malignant growths. It produceslittle or no inflammatory reaction and no bleeding. It is claimed forphoresis that medicinal salts are carried by diffusion into inaccessibleparts and that these nascent salts are more active than in their normalchemical condition. The disadvantages to electrolysis are that it isslow and not free from pain; that it
. Electricity : its medical and surgical applications, including radiotherapy and phototherapy . ed to produce an alterative effect upon pathologicalconditions of the mucosa, to reduce redundant tissue and fibrous stric-tures, and to destroy tumors and malignant growths. It produceslittle or no inflammatory reaction and no bleeding. It is claimed forphoresis that medicinal salts are carried by diffusion into inaccessibleparts and that these nascent salts are more active than in their normalchemical condition. The disadvantages to electrolysis are that it isslow and not free from pain; that it requires considerable apparatusand some experience, and that malignant disease beyond the reach ofthe knife and cautery is also beyond its reach. —As elsewhere, the galvanic current must be used. Theapparatus and general rules of application being the same as whenemployed in other localities (pp. 267 and 271). It is necessary to havea reliable rheostat and milliamperemeter to control and measure the cur-rent. Needles for use in throat and nose work are shown in Fig. 314 Fig. 314. Delavans electrolysis needles, unipolar and bipolar. (Kyle.) General TecJmique.—No anesthetic is required for currents below 3milliamperes; between 3 and 10 milliamperes cocaine, 4 per cent., shouldbe applied, and for strengths over 10 milliamperes a general anestheticis necessary. The current should start at nothing, be slowly increased,and then slowly diminished; the length of application varies from twoto twenty minutes, and for the lower strengths the endurance ofthe patient will indicate how much may be used. When destroyingtissues, a white foam appears as the current passes, but the size of thepart destroyed will not be evident until the second or third day, atwhich time the slough forms. The eschar comes away about the eighthor tenth day. After-treatment consists of the use of boric wash orpowder. For further rules to be observed in the employment of electro-lyses, see p. 267. Dis
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