. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. ters and brain unless promptly neutralizedby tetanus antitoxin. Its normal habitat is the intestinal tract ofherbivorous animals. Its spores are characterized by great has been found in the cultivated surface soil of all countries, but notbeyond the depth of 30 cm. It has also been found in the dust of streetsand in the woodwork of houses and furniture. It is frequently presentin the excrement of animals and man. The comparative infrequency oftetanus is in strong contr
. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. ters and brain unless promptly neutralizedby tetanus antitoxin. Its normal habitat is the intestinal tract ofherbivorous animals. Its spores are characterized by great has been found in the cultivated surface soil of all countries, but notbeyond the depth of 30 cm. It has also been found in the dust of streetsand in the woodwork of houses and furniture. It is frequently presentin the excrement of animals and man. The comparative infrequency oftetanus is in strong contrast with the wide distribution of its cause. Symptoms.— The period of incubation varies from three days tothree Aveeks. In a majority of the cases acute symptoms manifest them-selves between the fourth and the tenth day. In general the onset occursbetween the eighth and fourteenth days, rarely later than the fourth are infrequent. They consist of nausea, tenderness in thewound or scar, increased suppuration or spontaneous reopening of thewound, accompanied by restlessness and loss of Fig. 262.—Bacillus tetani and free spores. 160 MEDICAL DIAGNOSIS. The attack is occasionally marked by shivering or an actual characteristic symptoms are continuous tension of the voluntarymuscles, and the occurrence at irregular intervals of spasms of varyingintensity. The tension and the spasms are commonly relaxed duringsleep. In inoculated animals, these symptoms usually commence in theregion of the wound and extend to other parts of the body. In man theyoften first involve the muscles of the neck and suggest an ordinary torti-collis from cold. Tension and spasm of the masticatory muscles—trismus—soon occur and may be the earliest manifestations of the true is inability to open the mouth or protrude the tongue—lockjaw—and efforts to perform these actions provoke more or less persistentspasm of the facial muscles—risus sardonicus. Pr
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmedicine, bookyear192
