The Performance of the Intubation Difficulty Scale among Obese Parturients Undergoing Cesarean Section

Table 1

Demographic characteristics of parturients ().

Variables	Mean ± SD or number (%)
Age, years	29.2 ± 6.0
Body mass index, kg/m^2	33.9 ± 3.7
Prepregnancy body mass index, kg/m^2	27.8 ± 4.4
ASA classification
II, III, IV	297 (57.4), 216 (41.8), 4 (0.8)
Indication of surgery
Previous caesarean section	174 (33.7)
Cephalopelvic disproportion	189 (36.6)
Preeclampsia	57 (11.0)
Nonreassuring fetal status	15 (2.9)
Fetal macrosomia	10 (1.9)
Others	72 (13.9)
Airway assessment tests
Neck circumference in sitting position, cm.	37.2 ± 3.0
Neck circumference in supine position, cm.	38.0 ± 3.0
Sternomental distance, cm.	15.9 ± 1.9
Modified Mallampati Test
Classes I, II	65 (12.6), 288 (55.7)
Classes III, IV	155 (30.0), 9 (1.7)
Positions
Sniffing	506 (97.9)
Ramp	11 (2.1)