From: Effect of topical ropivacaine on the response to endotracheal tube during emergence from general anesthesia: a prospective randomized double-blind controlled study
Group R
Group C
P
The overall occurrence of cough
9(34.62%)
20(76.92%)
0.002a
Total number of patients according to cough grade
Grade 0
17
6
Grade 1
7
0.749
Grade 2
1
9
0.005a
Grade 3
2
4
0.358