PEFR (L/min)

Group-A

n = 35

Group-B

n = 35

p value

Pre-operative

205.43 ± 30.62

217.71 ± 39.86

0.153^ns

15 minutes after induction

190.29 ± 28.33

200.57 ± 34.12

0.175^ns

15 minutes after arrival at post-operative ward

179.71 ± 30.24

180.86 ± 37.05

0.887^ns