None
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Age 18-64 years old, regardless of gender; 2. Patients undergoing thyroid surgery under general anesthesia; 3.ASA Grade I - III; 4. Obese patients with BMI=28.0kg/m2 (WHO standard);
Exclusion criteria
Exclusion criteria: 1. Cervical spondylosis, loose or missing incisor teeth, hoarseness before surgery, bronchial asthma, history of airway hyperresponsiveness, hypertension, abnormal heart, brain, liver, lung, kidney and coagulation function. 2. Patients with history of hypersensitivity or allergy to related anesthetic drugs and contraindications, severe sleep apnea syndrome, bronchial asthma attack, upper respiratory tract obstruction and predictive mask ventilation difficulties, central nervous system diseases or mental disorders, contraindications of general anesthesia. 3. Poor compliance.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Success rate of intubation; | — |
Secondary
| Measure | Time frame |
|---|---|
| Tracheal intubation time;Modified Cormack-Lehane laryngoscope exposure grading;Incidence of relatively difficult mask ventilation;Number of tracheal intubation attempts.;Incidence of hypoxemia;The time when the vocal cords are fully exposed; | — |
Countries
China
Contacts
The Affiliated Sheng Jing Hospital of China Medical University