Data are expressed as mean ± standard deviation or number (percentage). BMI, Body mass index ;NC, neck circumference; TMD, thyromental distance; SMD, sternomental distance; HMD, hyo-mental distance; IID, interincisor distance

Table 2: Comparison of the effectiveness of the ventilation between CFM and IOM in terms of SpO2%, EtCO2, TV and LV.