Practical electro-therapeutics and X-ray therapy - with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray (1912) (14570427050)

Identifier: practicalelectro00mart (find matches)
Title: Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray
Year: 1912 (1910s)
Authors: Martin, James Madison, 1866-1947
Subjects: Electrotherapeutics X-rays Diagnosis, Radioscopic Eye Electric Stimulation Therapy X-Ray Therapy Ophthalmologic Surgical Procedures
Publisher: St. Louis : C.V. Mosby
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School



Text Appearing Before Image:
mu-lating effect on animal tissue. The secondary coil or coils, being free from metallic contact withthe battery circuit, will depend wholly upon induction from theelectromagnetic field, and will consequently have a low amperage,with a high voltage, in proportion to the number of turns of wirein the secondary coil. Both primary and secondary coil currentscontract muscles. Indirect stimulation is greater than direct. Forthe purpose of muscular contraction, slow interruptions are betterthan fast, since rapid interruptions tetanize the muscle. Currents 168 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY from primaries and short secondary coils are stimulating andnutritive, while currents from long secondary coils, with rapidinterrupters, are tetanizing and markedly sedative. Induced cur-rents, slowly interrupted, produce a kind of electric massage in thetissues, with a stimulating and nutritional effect, while the samecurrent rapidly interrupted produces anemia, with destructivechanges.
Text Appearing After Image:
Fig. 87.—Wall plate. The faradic current is useful in the treatment of all functionalparalyses where there is no destructive lesion in the nerve tissues.In the treatment of female pelvic conditions it frequently serves adouble purpose by increasing nutritive processes and relieving painand irritation. It should be remembered that intrauterine applications of gal-vanism should always be followed by a few minutes use of the DISEASES OF THE NERVOUS SYSTEM 169 high-tension faradic current through the same electrodes for thepurpose of allaying any irritation that may have been caused bythe galvanic application. To illustrate and describe each galvanic battery or wall platenow on the market would fill a fair-sized volume. Unfortunatelyfor the physician and the cause of electro-therapeutics, the averagetable or wall plate seen in the physicians office is almost worthless;a few are good, but only occasionally do we find one that is first-class. The physician gets the idea that wall or table