2.

3组患者气道评估情况及术前SpO₂比较

Comparison of airway assessment and preoperative SpO₂ amongthe 3 groups (n=30, Mean±SD or number of cases)

Group	Mallampati class (Ⅰ/Ⅱ)	Mouth opening (Ⅰ/Ⅱ/Ⅲ/Ⅳ)	Thyromental distance (Ⅰ/Ⅱ/Ⅲ)	OSAS [n (%)]	SpO2(%)
Mouth opening: Ⅰ>4.0 cm, Ⅱ: 2.5~3.0 cm, Ⅲ: 1.2~2.0 cm, and Ⅳ < 1.0 cm. Thyromental distance: Ⅰ>6.5 cm, Ⅱ: 6~6.5 cm, Ⅲ < 6 cm.
M	12/18	29/1/0/0	29/1/0	9(30)	95.9±1.7
T	11/19	30/0/0/0	26/4/0	8(27)	94.8±2.2
M+T	12/18	29/1/0/0	28/2/0	7(23)	95.1±2.0
F/χ2	0.094	1.023	2.169	0.341	2.435
P	0.954	0.600	0.338	0.843	0.094