Perianesthetic development of diaphragmatic hernia in a horse with equine pituitary pars intermedia dysfunction (PPID)

A 21-year-old Thoroughbred gelding with a history of equine pituitary pars intermedia dysfunction (PPID) presented with priapism of 2 days' duration. The horse received a caudal morphine epidural and then underwent corpus cavernosum lavage and phallectomy under general anesthesia. The patient&#...

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Bibliographic Details
Published in:Canadian veterinary journal 2015-01, Vol.56 (1), p.48-52
Main Authors: Shepard, Molly K, Lee, Wesley L, Eggleston, Randy B
Format: Article
Language:English
Subjects:
Animals
Hernia, Diaphragmatic - etiology
Hernia, Diaphragmatic - veterinary
Horse Diseases - etiology
Horse Diseases - pathology
Horses
Male
Pituitary Diseases - complications
Pituitary Diseases - veterinary
Pituitary Gland, Intermediate - pathology
Scientific
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Summary:A 21-year-old Thoroughbred gelding with a history of equine pituitary pars intermedia dysfunction (PPID) presented with priapism of 2 days' duration. The horse received a caudal morphine epidural and then underwent corpus cavernosum lavage and phallectomy under general anesthesia. The patient's recovery featured multiple unsuccessful attempts to stand and his respiratory distress persisted for several hours until he acutely developed severe colic and was euthanized. Necropsy findings revealed a pituitary adenoma of the pars intermedia, bilateral adrenal cortical hyperplasia, and diaphragmatic herniation. This report suggests that horses with PPID may present a greater risk for diaphragmatic hernia under general anesthesia or during procedures placing stress on the diaphragm, including anesthetic recovery.
ISSN:0008-5286