title: Transient Horner's syndrome following routine intravenous injections in two horses.
abstract: Horner's syndrome developed in 2 horses after routine jugular venipuncture. Signs included unilateral sweating of the face in both horses and ptosis in 1 horse. The signs resolved within 14 hours. Signs of a perivascular injection did not develop in either horse. Although Horner's syndrome has been reported after perivascular jugular injections these cases illustrate that the syndrome may develop following routine intravenous injections.
mesh_terms: D000320:Adrenergic Fibers / Q000293:injuries*; D000818:Animals; D006732:Horner Syndrome / Q000209:etiology / Q000662:veterinary*; D006734:Horse Diseases / Q000209:etiology*; D006736:Horses; D007275:Injections, Intravenous / Q000009:adverse effects / Q000662:veterinary*; D007601:Jugular Veins; D008297:Male; D013546:Sweating; D014991:Xylazine / Q000008:administration & dosage
chemical_list: D014991:Xylazine