Respiratory parameters measured by whole-body barometric plethysmography (WBBP).

Means (m) and standard deviations of the means (sd) of RR, Te/Ti, PEF/PIF, and MV/BW were calculated for 20 breaths collected from each dog.RR = respiratory rate (breath per minute); Te/Ti = expiratory time (s) /inspiratory time(s); PEF/PIF = peak expiratory flow rate (ml/s)/ peak inspiratory flow rate (ml/s); MV/BW = minute volume (ml)/ body weight(kg); m = mean of the parameter calculated from the 20 breaths of each dog; sd = standard deviation of the parameter calculated from the 20 breaths of each dog.a Breeds: English springer spaniel (n = 2), Border collie (n = 1), Jack Russell terrier (n = 1), Labrador retriever (n = 3), American bullterrier (n = 1), Beagles (n = 6), Dachshund (n = 1), Cairn terrier (n = 1), West Highland white terrier (n = 1), cross breeds (n = 3).b BOAS- FB = Grade 0/I FB; BOAS+ FB = Grade II/III FB. Functional grades, refer to Table 1.π The Kolmogorov-Smironov test was significant (i.e. data were not normal distributed); p* Significantly different from the non-brachycephalic control group, *pτ Significantly different from the BOAS- French bulldogs; τ pτ τ pτ τ τ pRespiratory parameters measured by whole-body barometric plethysmography (WBBP).