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Table 3 Pulmonary function tests before and after albuterol and saline

From: Tidal breathing flow-volume loops in bronchiolitis in infancy: the effect of albuterol [ISRCTN47364493]

 

Albuterol

Saline

Pre

Post

Pre

Post

PTEF (ml/s)

93.8 ± 28.4*

101.3 ± 28.5*

95.3 ± 25.1*

105.0 ± 30.5*

VT (ml/kg)

6.4 ± 1.5

6.8 ± 1.3

6.9 ± 2.3

7.4 ± 3.5

tPTEF/tE

0.16 ± 0.09

0.13 ± 0.05

0.16 ± 0.08

0.14 ± 0.08

VPTEF/VE

0.22 ± 0.11

0.20 ± 0.06

0.22 ± 0.08

0.21 ± 0.07

TEF10 (ml/s)

39 ± 13.0*

33 ± 13.2*

43 ± 17.7

39 ± 18.2

TEF25 (ml/s)

55 ± 16.0

48 ± 16.9

57 ± 21.7

56 ± 19.4

TEF50 (ml/s)

77 ± 22

78 ± 25

77 ± 24*

83 ± 23*

25/PT

0.59 ± 0.15*

0.48 ± 0.13*

0.60 ± 0.19

0.53 ± 0.15

  1. Data presented as mean ± standard deviation. PTEF, peak tidal expiratory flow; VT, tidal volume per kilogram of body weight; tPTEF/tE, ratio of time to peak expiratory flow to total expiratory time; VPTEF/VE, ratio of exhaled volume to peak expiratory flow to tidal volume; TEF10, TEF25, and TEF50, tidal expiratory flow rates at 10%, 25%, and 50% of the remaining tidal volume; 25/PT, ratio of TEF25 to the PTEF. *P < 0.05 between pre and post values.