Objective—To identify non-dietary risk factors for
gastric dilatation-volvulus (GDV) in large breed and
giant breed dogs.
Design—Prospective cohort study.
Animals—1,637 dogs ≥ 6 months old of the following
breeds: Akita, Bloodhound, Collie, Great Dane, Irish
Setter, Irish Wolfhound, Newfoundland, Rottweiler,
Saint Bernard, Standard Poodle, and Weimaraner.
Procedure—Owners of dogs that did not have a history
of GDV were recruited at dog shows, and the
dog's length and height and the depth and width of
its thorax and abdomen were measured. Information
concerning the dog's medical history, genetic background,
personality, and diet was obtained from the
owners, and owners were contacted by mail and
telephone at approximately 1-year intervals to determine
whether dogs had developed GDV or died.
Incidence of GDV, calculated on the basis of dogyears
at risk for dogs that were or were not exposed
to potential risk factors, was used to calculate the relative
risk of GDV.
Results and Clinical Relevance—Cumulative incidence
of GDV during the study was 6% for large
breed and giant breed dogs. Factors significantly
associated with an increased risk of GDV were
increasing age, having a first-degree relative with a
history of GDV, having a faster speed of eating, and
having a raised feeding bowl. Approximately 20 and
52% of cases of GDV among the large breed and
giant breed dogs, respectively, were attributed to
having a raised feed bowl. (J Am Vet Med Assoc