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Exercise-induced hyperthermia syndrome (canine stress syndrome) in four related male English springer spaniels

Authors Thrift E, Wimpole JA, Child G, Brown N, Gandolfi B, Malik R

Received 4 October 2016

Accepted for publication 5 December 2016

Published 1 September 2017 Volume 2017:8 Pages 59—68


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Professor Young Lyoo

Elizabeth Thrift,1 Justin A Wimpole,2 Georgina Child,2 Narelle Brown,1 Barbara Gandolfi,3 Richard Malik4

1Animal Referral Hospital, 2Small Animal Specialist Hospital, Sydney, NSW, Australia; 3Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA; 4Centre for Veterinary Education, University of Sydney, Sydney, NSW, Australia

Objective: This retrospective study describes the signalment, clinical presentation, diagnostic findings, and mode of inheritance in four young male English springer spaniel dogs with presumptive canine stress syndrome.
Materials and methods: Appropriate cases were located through medical searches of medical records of two large private referral centers. Inclusion criteria comprised of English springer spaniel dogs with tachypnea and hyperthermia that subsequently developed weakness or collapse, with or without signs of hemorrhage, soon after a period of mild-to-moderate exercise. The pedigrees of the four affected dogs, as well as eleven related English springer spaniels, were then analyzed to determine a presumptive mode of genetic inheritance.
Results: Four dogs met the inclusion criteria. All four were male, suggesting the possibility of a recessive sex-linked heritable disorder. Pedigree analysis suggests that more dogs may be potentially affected, although these dogs may have never had the concurrent triggering drug/activity/event to precipitate the clinical syndrome. There was complete resolution of clinical signs in three of the four dogs with aggressive symptomatic and supportive therapy, with one dog dying during treatment.
Conclusion: Dogs with canine stress syndrome have the potential for rapid recovery if treated aggressively and the complications of the disease (eg, coagulopathy) are anticipated. All four dogs were male, suggesting the possibility of a recessive sex-linked mode of inheritance. Further genetic analyses should be strongly considered by those involved with the English springer spaniel breed, either with a genome-wide association study using canine single-nucleotide polymorphism arrays or whole-genome sequencing of affected and closely related dogs.

Keywords: malignant hyperthermia, canine stress syndrome, coagulopathy, dog, English springer spaniel

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