Supraglottic Airway Devices Position
Conditions
Keywords
supraglottic device, video laryngeal mask, fiberoptic bronchoscopy
Brief summary
A comparison of SaCo VLMTM video laryngeal mask airway with the I-gel supraglottic airway during airway management in patients undergoing elective surgery.
Detailed description
The position of the supraglottic airway is checked using a fiberoptic endoscope: The bronchoscope is placed at the opening of the laryngeal mask, and assessed using the following grading system: Grade 1: Vocal cords not visible. Grade 2: Vocal cords and anterior epiglottis visible. Grade 3: Vocal cords and posterior epiglottis visible. Grade 4: Only vocal cords visible.
Interventions
The visualization of the glottic structures through the SaCoVLM™ imaging system is graded as follows: Grade1: Visibility of the lateral portion of the right epiglottic fold and part of the laryngeal inlet. Grade 2: Visibility of both epiglottic folds and part of the laryngeal inlet. Grade 3: Visibility of the laryngeal inlet and part of the vocal cords. Grade 4: Visibility of the entire vocal cords.
The position of the i-Gel is checked using a fiberoptic endoscope
Sponsors
Study design
Eligibility
Inclusion criteria
* ASA classification I\ III, age 18\ 65 y/o, BMI 18\ 30kg/m2, elective surgery, surgery duration \< 2 hours, supine position, general anesthesia with laryngeal mask airway insertion
Exclusion criteria
* Smoking, betel nuts use, any known anatomical variation or disease of facial or airway structure, anticipated difficult airway, limited mouth opening distance or neck motility, loosening teeth, gastroesophageal reflux history, ongoing upper airway infection or inflammation symptoms
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| glottic visualization grades by fiberoptic exam assessment | From anesthesia induction to the end of surgery | Grade 1: vocal cords were not visualizedGrade 2: vocal cords and anterior epiglottis were visualizedGrade 3: vocal cords and posterior epiglottis were visualized Grade 4: vocal cords only were visualized |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Intra-operative effectiveness | From anesthesia induction to the end of surgery | Secondary outcomes were evaluated by oropharyngeal sealing pressure, first attempt success rate, insertion time |