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Retrospective study of 1050 dogs with respiratory symptoms in Japan (2005-2020)
Yuta Nakazawa1, Takafumi Ohshima1, Michio Fujita1
1Laboratory of Veterinary Radiology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan.
Background:
Few studies have investigated the incidence of respiratory diseases based on anatomical sites or the relationship between breed and these diseases.
Objective:
The objective of this study was to investigate the prevalence of canine respiratory diseases among dogs in Japan, with relationship to the breed.
Methods:
We retrospectively reviewed the medical records of dogs with respiratory symptoms and calculated the odds ratio (OR) to evaluate the relationship between breed and disease.
Results:
A total of 1050 dogs with respiratory symptoms were included in this study. Miniature dachshunds were the most common breed affected by respiratory diseases. Among tracheobronchial diseases, there was a significant association between some small breeds and tracheobronchial collapse, miniature dachshunds (OR: 4.44, 8.43, 95% confidence interval [CI]: 3.17-6.22, 4.33-16.0) and chronic bronchitis and bronchiectasis. Among nasal diseases, miniature dachshunds (OR: 27.2, 95% CI: 16.8-44.8) and golden retrievers (OR: 21.0, 95% CI: 6.43-69.3) were the most affected by non-infectious rhinitis and nasal aspergillosis, respectively. Brachycephalic obstructive airway syndrome was the most common disease among pharyngeal and laryngeal diseases, with a relationship with breed being found in some brachycephalic breeds, and Pomeranians (OR: 2.7, 95% CI: 1.42-5.17).
Conclusions:
Respiratory diseases in dogs are strongly correlated with popular breeds in Japan. Miniature dachshunds, in particular, are associated with many respiratory diseases, which may differ from international reports. Thus, this result may help in the early detection, prevention, treatment, and elucidation of the pathophysiology of canine respiratory diseases.
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