Revealing Study Discovers Key Factors Contributing to Sleep Disorders in Dogs

A groundbreaking study has brought to light the key risk factors associated with sleep-disordered breathing (SDB) in dogs, shedding new insights into how brachycephalic (short-nosed) breeds struggle with sleep due to their physical characteristics. Conducted on 63 privately owned dogs, including 28 brachycephalic and 35 normocephalic (mesaticephalic or dolicocephalic) breeds, the research aimed to pinpoint the causes behind SDB, a condition that significantly impacts canine welfare.

This prospective observational cross-sectional study utilized convenience sampling and innovative neckband recording technology to monitor the dogs in their home environment for one night. The primary focus was on the obstructive respiratory event index (OREI), a measure of breathing disruption during sleep. Additionally, the researchers assessed each dog's body condition score (BCS) and graded the severity of brachycephalic obstructive airway syndrome (BOAS) in brachycephalic dogs.

The findings were revealing: brachycephaly itself emerged as a significant risk factor for a higher OREI, indicating a 5.6 times increase in the risk of SDB compared to normocephalic dogs. Contrary to the researchers' hypothesis, aging did not significantly affect the risk of SDB. However, excess weight, defined as a BCS over 5/9, was identified as another significant risk factor, tripling the likelihood of SDB. Moreover, in brachycephalic dogs, those showing moderate to severe signs of BOAS were twice as likely to experience SDB.

These results highlight the multifaceted ways in which brachycephaly can diminish a dog's quality of life, particularly by disrupting normal sleep patterns. The study underscores the importance of monitoring weight and managing BOAS symptoms in brachycephalic breeds to mitigate the risk of SDB. It calls attention to the need for pet owners and veterinarians to be vigilant about the health and well-being of brachycephalic dogs, ensuring they receive the appropriate care to lead comfortable and restful lives.

Read full story: https://onlinelibrary.wiley.com/doi/10.1111/jvim.17019