A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . §18 THE EYE, EAR, NOSE, AND THROAT. 119 the operator may make use of copper intubation-cannulae forelectrodes, and where the patient requires tracheotomy oralready wears a cannula, a graduated set of laryngeal copperbougies is required. 175. The method is quite similar to that of the electrol-ysis of strictures elsewhere. Under illumination and inspec-tion the tube or bougie is introduced into the larynx andis made the cathode. The anode is placed on the back of theneck. A current of 5 to 20
A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . §18 THE EYE, EAR, NOSE, AND THROAT. 119 the operator may make use of copper intubation-cannulae forelectrodes, and where the patient requires tracheotomy oralready wears a cannula, a graduated set of laryngeal copperbougies is required. 175. The method is quite similar to that of the electrol-ysis of strictures elsewhere. Under illumination and inspec-tion the tube or bougie is introduced into the larynx andis made the cathode. The anode is placed on the back of theneck. A current of 5 to 20 milliamperes should be passedthrough the tissues for 5 minutes. Two days should intervenebetween sittings. When the caliber of the larynx has attaineda size that assures the permanency of the respiratory function, thetreatment may be suspended and the tracheotomy fistula, ifone exists, closed. MOTOR AFFECTIONS OF THE LARTTSTX 176. Motor affections of the larynx are benefited bydirect stimulation of the muscles by the interrupted current,using the cathode as the active electrode. The same treatment. Fig. 68HcKenzies Laryngeal Electrode is beneficial following, or as an adjunct to, the treatment ofneoplasms, tuberculosis, syphilis, etc. The instrument bestadapted for this purpose is McKenzies electrode, Fig. 68, orsome modification of it, as in Fig. 69. The electrode is intro-duced into the cocainized larynx by the aid of the laryngo-scope and brought as closely as possible in contact with themuscles. The strength of current and duration of applicationmust be governed by the patients subjective senses. Dailysittings are not too frequent. The anode is placed externallyover the thyroid cartilage. Methods that are inferior to this, butwhich may be utilized when, for any reason, it is unavailable, 120 ELECTRICITY IN DISEASES OF SIS consist in the external electrization with the interrupted current,placing an electrode on either side of the larynx; or electric
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