. Modern surgery, general and operative. a horde of embryos develop in the bowel, and leavethe alimentary canal by passing through the peritoneum or by means of theblood, and finally reach the connective tissue of the muscles. From the con-nective tissue the embryos migrate into the primitive muscle-fibers, where theydwell and enlarge. Myositis develops, and in the course of five or six weeksthe parasites become encapsulated and develop no further. The cyst-wallsmay calcify and the worms may become calcified, or may live for years. Theeating of infected meat is not inevitably followed by the d
. Modern surgery, general and operative. a horde of embryos develop in the bowel, and leavethe alimentary canal by passing through the peritoneum or by means of theblood, and finally reach the connective tissue of the muscles. From the con-nective tissue the embryos migrate into the primitive muscle-fibers, where theydwell and enlarge. Myositis develops, and in the course of five or six weeksthe parasites become encapsulated and develop no further. The cyst-wallsmay calcify and the worms may become calcified, or may live for years. Theeating of infected meat is not inevitably followed by the disease, and a fewembryos lodged in muscle may cause no symptoms. The symptoms of trichinosis often appear in a day or two after eating infectedmeat. The symptoms of acute gastro-intestinal catarrh or of cholera morbusare common, but in some cases no gastro-intestinal manifestations usher inthe disease. In from seven to fourteen, days after the infected meat is eatenthe migration of the parasites develops obvious symptoms. A chill may be. Fig. 507.—Trichinosis of right leg. Ischemic Myositis, or Volkmanns Contracture 8o,s noted; there is usually fever; muscular pain, tenderness, sweUing, and stiff-ness are complained of. This condition may be widespread. Involvement ofthe muscles of mastication interferes with chewing; of the larynx, with talkingand respiration; of the intercostals and diaphragm, with respiration. Skin-edema and itching are marked. In some cases delirium exists. The writersaw in the Philadelphia Hospital one fatal case which was mistaken for ery-sipelas because of the high fever, the dehrium, and the edematous redness ofthe face and neck. Dyspnea is frequent. Mild cases get well in a week ortwo; severe cases may last many weeks. The mortality varies in different epi-demics from I to 30 per cent. (Osier). The diagnosis is made by spearing outa piece of muscle, which is then examined for trichinae under a microscope; orthe worms may perhaps be detected in the fe
Size: 1353px × 1848px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidmodernsurger, bookyear1919
