Ultrasound measurement of laryngeal structures in the parasagittal plane for the prediction of difficult laryngoscopies in Chinese adults

Table 1 Descriptive data of the patients and the airway assessment results

Variable	Easy Laryngoscopy (n = 167)	Difficult Laryngoscopy (n = 44)	p-value
Sex
Male	65 (38.92)	27 (61.36)	0.008
Female	102 (61.08)	17 (38.64)	0.008
Age (y)	51.55 ± 14.60	54.48 ± 12.29	0.236
Weight (Kg)	63.23 ± 9.89	65.91 ± 12.29	0.131
Height (cm)	162.38 ± 7.55	164.86 ± 8.33	0.059
BMI (kg.cm²)	23.94 ± 3.16	24.21 ± 3.48	0.629
TMD < 4 cm	36 (21.56)	12 (27.27)	0.421
CM < 80°	38 (22.75)	6 (13.64)	0.981
IID < 4 cm	40 (23.95)	4 (9.09)	0.830
MMT ≥ III	11 (6.59)	33 (75.00)	< 0.001
DSE (cm)	2.05 ± 0.31	2.59 ± 0.41	< 0.001
DTE (cm)	0.99 ± 0.32	1.30 ± 0.39	< 0.001
DST (cm)	1.07 ± 0.28	1.28 ± 0.30	< 0.001

The results for continuous variables are represented by the mean ± standard deviation (SD). The categorical variables are in the form of numbers (percentages). Abbreviations: BMI Body mass index, MMT Modified mallampatia test, TMD Thyromental distance, CM Cervical mobility, IID Inter-incisor distance, DSE The distance between skin and epiglottis, DST The distance between skin and thyroid cartilage, DTE The distance between thyroid cartilage and epiglottis

ISSN: 1471-2253