title: Concurrent retrograde ejaculation and hypothyroidism in a dog: case report.
abstract: Retrograde ejaculation and hypothyroidism were diagnosed in a 19-mo-old Labrador retriever. The retrograde ejaculation was reversed following the administration of the sympathomimetic agent, pseudoephedrine hydrochloride, at a dose of 4 mg/kg per os given 1 and 3 h before semen collection. Antegrade ejaculation failed to occur after normalization of serum thyroid hormone levels by thyroxine supplementation. The pathophysiology of retrograde ejaculation is reviewed.
authors.affiliation: Department of Small Animal Clinical Sciences, University of Minnesota, St. Paul, MN, USA.
authors.forename: M V
authors.initials: MV
authors.lastname: Root
authors.forename: S D
authors.initials: SD
authors.lastname: Johnston
authors.forename: P N
authors.initials: PN
authors.lastname: Olson