Laryngeal Masks, Urinary Bladder Neoplasms
Conditions
Brief summary
The purpose of this study is to compare the first attempt success rate of laryngeal mask airway insertion according to the degree of head elevation.
Detailed description
The purpose of this study is to compare the first attempt success rate of laryngeal mask airway insertion between 7 cm head elevation and 14 cm head elevation in patients who undergoing transurethral bladder tumor resection.
Interventions
PROCEDURELaryngeal mask airway insertion
Laryngeal mask airway insertion in patients who undergoing transurethral bladder tumor resection
Sponsors
Asan Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
20 Years to 79 Years
Healthy volunteers
No
Inclusion criteria
* Patients who are scheduled transurethral bladder tumor resection under general anesthesia * 20-79 years of age * American Society of Anesthesiologists physical status ≤3 * Patients who are voluntarily agreed to this clinical study
Exclusion criteria
* History of difficult airway * Expected difficult airway by physical examination * Unstable teeth or teeth loss * Obesity (body mass index ≥ 30) * Recent history of upper respiratory infection * Patients who are not fasted or who are at risk of aspiration
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| First attempt success rate | Immediately after mask airway insertion | The rate of success at the first attempt of laryngeal mask airway insertion |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Laryngeal mask airway insertion-related patient satisfaction | At postoperative 6 hours | A seven-point Likert scale |
| Second attempt success rate | Immediately after mask airway insertion | The rate of success at the second attempt of laryngeal mask airway insertion |
| Third attempt success rate | Immediately after mask airway insertion | The rate of success at the third attempt of laryngeal mask airway insertion |
| The percentage of glottic opening score | Immediately after mask airway insertion | The percentage of glottic opening by fiberoptic view |
| Reposition rate | After mask airway insertion (up to end of surgery) | The rate of reposition after laryngeal mask airway insertion when ventilation is ineffective or air leaks |
| Complications associated with laryngeal mask airway insertion | Up to postoperative 3 days | Complications related with laryngeal mask airway insertion such as cough, vomit, aspiration, regurgitation, bleeding, laryngospasm, and bronchospasm |
| Oropharyngeal leak pressure | Immediately after mask airway insertion | Oropharyngeal leak pressure is measured as follows: After setting the expiratory valve to 30 cmH2O at a fixed gas flow rate of 3 L/min, the maximum inflation pressure is measured when a noise of gas leakage is heard in the oropharynx via a stethoscope. |
Countries
South Korea
Outcome results
None listed