Seven cases of paradoxical embolism due to canine filariae

犬糸状虫による奇異性塞栓症７例について

Seven cases of paradoxical embolism due to canine filariae

Creators Hayasaki Mineo

Creators 大石 勇

Creators 小林 茂雄

Creators 久米 清治

Creators 最上 義典

Creators 瀬島 孟

Seven dogs 3 to 8 years old manifested such clinical symptoms as a rise in body temperature, anorexia, depression, lameness, astasia, and paralysis or hyperesthesia of the hind quarters. Of them, two took an acute course of 2 and 7 days, respectively, and five a subacute course of 20 to 115 days. Four dogs were subjected to hematological examination, urinalysis, electrocardiography, phonocardiography, radiography, and determination of circulation time. As a result, they showed and increased leukocyte count and radiographic changes of embolism of arteries in the hing quarters, in addition to the ordinary findings of canine filariasis. The other three dogs were in so severe conditions that they could be examined by no tests, except one which demonstrated that they were positive for microfilariae in blood. From these results, all the dogs were diagnosed as paradoxical embolism induced by canine filariae. Autopsy revealed that an open condition of the ductus arteriosus (3.5 cm in diameter and 2.4 cm in length) was present in one dog and an open condition of the foramen ovale (from a pin-hole size to about 1 cm in diameter) in the other dogs. Embolism caused by canine filariae was observed in the femoral artery in all the dogs and in the abdominal or thracic aortaand the renal arterv in two dogs.

[ISSN]0446-6454

[NCID]AN00191857

[isVersionOf] [URI]http://nichiju.lin.go.jp/mag/index.html

[isVersionOf] Dirofilaria immitis infection and dirofilariosis : an animal model of human filariosis [URI]http://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2010010511