difficult airway
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: (1) Age <= 12 years (2) Children intended for general anesthesia with tracheal intubation; (3) ASA classification of grade I-III;
Exclusion criteria
Exclusion criteria: (1) The child's parents have speech communication and cooperation difficulties; (2) Patients with open trauma to the head and neck (3) Patients with cervical fractures, neck surgery, or a history of cervical spine disease (4) Emergency surgery; (5) Patients who are allergic to relevant medications.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| tracheal tube diameter; | — |
Secondary
| Measure | Time frame |
|---|---|
| ultrasound image;Baseline Data; | — |
Countries
China
Contacts
Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine