Tracheal extubation in deeply anesthetized pediatric patients after tonsillectomy: a comparison of high-concentration sevoflurane alone and low-concentration sevoflurane in combination with dexmedetomidine pre-medication

Table 2 Extubation characteristics, use of oral airway

Study group	Group D₀	Group D₁	Group D₂
Study group	(n = 25)	(n = 25)	(n = 25)
Smooth extubation	25(100.0)	25(100.0)	25(100.0)
Extubation Quality Score
no coughing	23(92.0)	25(100.0)	25(100.0)
minimal coughing	2(8.0)	0	0
moderate coughing	0	0	0
severe coughing	0	0	0
poor extubation	0	0	0
Use of oral airway	9(36.0)	3(12.0)*	2(8.0)*

Data are expressed as number of patients (%) (Chi-Square test)
Group D₀ saline group, Group D₁ dexmedetomidine group (1 μg · kg⁻¹), Group D₂ dexmedetomidine group (2 μg · kg⁻¹)
*P < 0.05 vs. Group D₀