Difficult airway
Conditions
Interventions
Gold Standard:Cormack-Lehane grading of glottis exposure on direct laryngoscopic views
The classification of mask ventilation
Index test:The height of the mandibular body
The height of the mandibular body-molars
Sponsors
the Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine
Eligibility
Sex/Gender
All
Age
18 Years to 90 Years
Inclusion criteria
Inclusion criteria: 1.ASA Class I to III patients requiring general anesthesia with endotracheal intubation 2.Age >18 years, BMI = 35kg/m2 3.No abnormality in respiratory tract, maxillofacial region and neck anatomy 4.Patient can cooperate with airway ultrasound 5.Anesthesia requires the use of muscle relaxants and muscle relaxants monitoring 6.Direct laryngoscope was used for endotracheal intubation
Exclusion criteria
Exclusion criteria: 1.Anatomical abnormalities were found in respiratory tract, maxillofacial region and neck after inclusion 2.Risk of reflux and aspiration was detected
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The height of the mandibular body;The height of the mandibular body-molars; | — |
Secondary
| Measure | Time frame |
|---|---|
| Minimal distance from the skin to the hyoid bone;Distance from the skin to the epiglottis;The distance from the skin to the anterior commissure;The distance from the skin to the arytenoids;Tongue thickness;The stiffness of the tongue root;Hyoid-mental distance;Depressed tongue thickness with direct laryngoscope;Depressed tongue thickness with video laryngoscope;Modified Mallampati scores;Thyromental distance;Interincisor gap;Length of Mandibular body;Distance between mandibular Angle;Length of Mandibular; | — |
Countries
China
Contacts
Public ContactLi Dewei
Department of Anesthesiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine
Outcome results
None listed