Finnish researchers have tested a new method of diagnosing sleep-disordered breathing in dogs using a neckband developed for human sleep apnoea diagnostics.
The study by a team at the University of Helsinki—and published in the Journal of Veterinary Internal Medicine—revealed that sleep-disordered breathing is more prevalent among short-snouted dogs than those with longer snouts.
French bulldogs, pugs and other brachycephalic dog breeds are popular pets. Brachycephalic dogs are shorter-nosed and flat-faced as a result of breeding, making them more susceptible to heat, overexertion and respiratory problems.
In addition, brachycephalic dogs have been found to suffer from recurring episodes of sleep-disordered breathing, resembling human obstructive sleep apnoea caused by upper airway obstruction. During such episodes, normal breathing is interrupted by obstructed airways as the muscles of the upper airways relax, resulting in sleep interruptions and daytime fatigue. Sleep apnoea can have a dramatic impact on both human and canine wellbeing.
“Sleep apnoea places people at considerable risk of conditions such as hypertension and cardiovascular disease,” doctoral researcher Iida Niinikoski said.
“Sleep affects the body’s immune system, hormone secretion and metabolism. Sufficient, sound sleep is vital for quality of life. For these reasons and others, we are interested in canine sleep too.
“Previous methods for investigating sleep apnoea have required dogs to sleep either while connected to all sorts of equipment or within a certain type of box in a lab. This has made research challenging and limited our knowledge of dog sleep apnoea.”
The research group investigated breathing during sleep in dogs using a neckband system developed originally for diagnosing human sleep apnoea.
They measured breathing during sleep using the screening device in the dogs’ home environment. Brachycephalic dogs recorded a much higher number of sleep-disordered breathing events than dogs with longer snouts. The short-nosed dogs also snored more than their long-nosed counterparts.
