Serum thyroxine concentrations following fixed-dose radioactive iodine treatment in hyperthyroid cats: 62 cases (1986-1989).
The medical records of 62 hyperthyroid cats treated with a fixed dose of 4 mCi of radioactive iodine (131I) were reviewed. In 60 cats, serum thyroxine concentrations were determined after treatment, allowing evaluation of treatment success. Eighty-four percent of the cats had normal serum thyroxine concentrations after treatment. Five of the 60 cats (8%) remained hyperthyroxinemic after treatment. Five cats (8%) were hypothyroxinemic when evaluated within 60 days of treatment. Three of these cats had normal serum thyroxine concentrations 6 months after treatment, and none had clinical signs of hypothyroidism. The administration of a fixed dose of 4 mCi of 131I was determined to be an effective treatment for feline hyperthyroidism.
Department of Veterinary Internal Medicine, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.
S M
SM
Meric
S I
SI
Rubin
D000818:Animals; D002371:Cat Diseases / Q000188:drug therapy*; D002415:Cats; D005260:Female; D006980:Hyperthyroidism / Q000188:drug therapy / Q000662:veterinary*; D007457:Iodine Radioisotopes / Q000627:therapeutic use*; D008297:Male; D012189:Retrospective Studies; D013974:Thyroxine / Q000097:blood*
D007457:Iodine Radioisotopes; D013974:Thyroxine