The evaluation of maximum condyle-tragus distance can predict difficult airway management without exposing upper respiratory tract; a prospective observational study

Table 1 Comparison between the difficult and the non-difficult laryngoscopy group

Variable	Difficult laryngoscopy	Non-difficult laryngoscopy	P value
Variable	n = 39	n = 265	P value
Sex (male/female, n)	26/13	111/154	0.003
Age (y)	57 ± 13	49 ± 16	< 0.001
Height (cm)	163 ± 7	165 ± 8	0.32
weight (kg)	62 ± 11	64 ± 12	0.52
Body mass index (kg/m²)	23.4 ± 3.7	23.4 ± 3.5	0.94
Mallampati classification (<3/>2grade, n)	5/34	128/137	< 0.001
ULBT (> 1/1grade, n)	33/6	148/117	< 0.001
IID<3 finger width (yes/no, n)	31/8	92/173	< 0.001
C-TMD < 1 finger width (yes/no, n)	35/4	81/184	< 0.001

Data are shown as the means±standard deviation or numbers. Difficult laryngoscopy was defined as a Cormack and Lehane grade > 2
All patient characteristics were compared using Mann-Whitney U test for continuous variables and χ²or Fisher exact test for categorical variables
Abbreviations: ULBT Upper lip bite test, IID interincisor distance, C-TMD condyle-tragus maximal distance

ISSN: 1471-2253