Predicting respiratory disorder mortality in dogs
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Predicting respiratory disorder mortality in dogs


Respiratory disorders in dogs can quickly become critical and are reported to be the second leading cause of cardiac arrest in canines. Therefore, it is necessary to take appropriate measures according to each patient’s condition. This, however, requires rapid and accurate disease severity assessments. In human medicine, scoring systems that incorporate physical examinations and blood tests results with respiratory function assessments exist, and enable more accurate severity assessments. In contrast, there are only a few reports on severity assessments that use tests other than respiratory function evaluations in veterinary medicine. Further, these evaluations usability remains unclear.

A research group led by Associate Professor Toshiyuki Tanaka and Dr. Muryo Miki at Osaka Metropolitan University’s Graduate School of Veterinary Medicine explored factors associated with the prognosis of respiratory disorders in dogs. The team examined medical records that included general physical examinations and blood test results of 133 dogs who visited an emergency veterinary hospital with respiratory disorders. A statistical analysis of 105 survivors and 28 non-survivors revealed significant differences in heart rate, body temperature, white blood count (WBC), glucose, blood urea nitrogen (BUN), lactate, and, most significantly, phosphate. Similar to human prognoses, non-survivor test results that showed elevated levels of phosphate indicated poor outcomes.

“As far as we know, this study is the first to report that phosphate may be a prognostic indicator in canine respiratory disorders. In addition, the indicators suggested by this study are generally easy to measure and therefore are widely applicable in various facilities,” stated Dr. Miki.

Professor Tanaka added, “Since this survey covers a broad range of diseases classified as respiratory disorders, we believe that it is necessary to conduct surveys targeting individual diseases. We will also continue to investigate the reasons for the increase in phosphate.”

The study was published in PLOS One.

Competing interests
The authors have declared that no competing interests exist.

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About OMU
Established in Osaka as one of the largest public universities in Japan, Osaka Metropolitan University is committed to shaping the future of society through “Convergence of Knowledge” and the promotion of world-class research. For more research news, visit https://www.omu.ac.jp/en/ and follow us on social media: X, Facebook, Instagram, LinkedIn.
Journal: PLOS One
Title: Predictive value of physical and blood examination findings for short-term mortality in dogs with respiratory disorders
DOI: 10.1371/journal.pone.0328797
Author(s): Muryo Miki, Keiichiro Mie, Hidetaka Nishida, Hideo Akiyoshi, Toshiyuki Tanaka
Publication date: 17 July 2025
URL: https://doi.org/10.1371/journal.pone.0328797
Attached files
  • Example of a common dog breed treated for respiratory disorders: Chihuahuas made up 35.4% of cases that visited the veterinary hospital with respiratory distress.
Regions: Asia, Japan, Europe, United Kingdom, North America, United States
Keywords: Science, Life Sciences, Health, Medical

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