Classic Face Mask Classic Face Mask Intraoral Mask Intraoral Mask
Mean ± SD Med(Min-Max) Mean ± SD Med (Min-Max) p
SpO2 99.46±0.88 100 (96-100) 99.44±0.93 100 (96-100) 0.572
EtCO2 33.81±4.32 34 (6-44) 33.59±4.35 33 (3-45) 0.175
TV 430.85±154.87 430 (100-850) 481.92±173.99 500 (50-910) 0.000*
LV 159.38±146.31 110 (0-720) 71.50±91.17 40 (0-470) 0.000*