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Table 2 Demographic data of 51 pugs meeting criteria for establishing reference ranges

From: Reference ranges for standard-echocardiography in pugs and impact of clinical severity of Brachycephalic Obstructive Airway Syndrome (BOAS) on echocardiographic parameters

N = 51

mean ± SD

median

range (min - max)

age [years]

4.5 ± 2.2

4.3

2 - 10.5

BW [kg]

8.9 ± 1.3

8.8

6 - 12.4

BS [m²]

0.43 ± 0.04

0.43

0.33 - 0.54

HR [bpm]

110 ± 23

105

70 - 160

SAP [mmHg] (N = 50)

119.6 ± 11.8

117.5

100 - 146

sex

   

male (n/i)

24 (4/20)

  

female (n/i)

27 (10/17)

  

BOAS (N = 42)

   

Grade

Grade 0: 31% (N = 13)

} BOAS- (N = 21)

 

Grade 1: 19% (N = 8)

 

Grade 2: 35,7% (N = 15)

} BOAS+ (N = 21)

 

Grade 3: 14,3% (N = 6)

 
  1. bpm beats per minute, BOAS Brachycephalic Obstructive Airway Syndrome, BS body surface area, BW body weight, HR heart rate, i intact, max maximum, min minimum, N number of subjects, n neutered, SAP systolic arterial blood pressure, SD standard deviation
  2. Note: BOAS functional grading system according to Liu et al. 2015, modified to present study design