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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Evaluation with 14 cm high pillow | Experimental | When inserting laryngeal mask airway, head elevation is performed using a 14 cm high pillow. |
|
| Evaluation with 7 cm high pillow | Active Comparator | When inserting laryngeal mask airway, head elevation is performed using a 7 cm high pillow. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Laryngeal mask airway insertion | Procedure | Laryngeal mask airway insertion in patients who undergoing transurethral bladder tumor resection |
|
| Measure | Description | Time Frame |
|---|---|---|
| First attempt success rate | The rate of success at the first attempt of laryngeal mask airway insertion | Immediately after mask airway insertion |
| Measure | Description | Time Frame |
|---|---|---|
| The percentage of glottic opening score | The percentage of glottic opening by fiberoptic view | Immediately after mask airway insertion |
| Laryngeal mask airway insertion-related patient satisfaction |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Young-Kug Kim, MD, PhD | Asan Medical Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Asan Medical Center | Seoul | 05505 | South Korea |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 30104838 | Background | Mohta M. Head elevation beyond sniffing position - An aid to airway management. J Anaesthesiol Clin Pharmacol. 2018 Apr-Jun;34(2):247-248. doi: 10.4103/joacp.JOACP_173_17. No abstract available. | |
| 26401265 | Background | Katsiampoura AD, Killoran PV, Corso RM, Cai C, Hagberg CA, Cattano D. Laryngeal mask placement in a teaching institution: analysis of difficult placements. F1000Res. 2015 Apr 29;4:102. doi: 10.12688/f1000research.6415.1. eCollection 2015. |
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| ID | Term |
|---|---|
| D001749 | Urinary Bladder Neoplasms |
| ID | Term |
|---|---|
| D014571 | Urologic Neoplasms |
| D014565 | Urogenital Neoplasms |
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
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A seven-point Likert scale
| At postoperative 6 hours |
| Second attempt success rate | The rate of success at the second attempt of laryngeal mask airway insertion | Immediately after mask airway insertion |
| Third attempt success rate | The rate of success at the third attempt of laryngeal mask airway insertion | Immediately after mask airway insertion |
| Oropharyngeal leak pressure | 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. | Immediately after mask airway insertion |
| Reposition rate | The rate of reposition after laryngeal mask airway insertion when ventilation is ineffective or air leaks | After mask airway insertion (up to end of surgery) |
| Complications associated with laryngeal mask airway insertion | Complications related with laryngeal mask airway insertion such as cough, vomit, aspiration, regurgitation, bleeding, laryngospasm, and bronchospasm | Up to postoperative 3 days |
| 2917111 | Background | Horton WA, Fahy L, Charters P. Defining a standard intubating position using "angle finder". Br J Anaesth. 1989 Jan;62(1):6-12. doi: 10.1093/bja/62.1.6. |
| 17272252 | Background | Takenaka I, Aoyama K, Iwagaki T, Ishimura H, Kadoya T. The sniffing position provides greater occipito-atlanto-axial angulation than simple head extension: a radiological study. Can J Anaesth. 2007 Feb;54(2):129-33. doi: 10.1007/BF03022009. |
| 21602973 | Background | Jun JH, Baik HJ, Kim JH, Kim YJ, Chang RN. Comparison of the ease of laryngeal mask airway ProSeal insertion and the fiberoptic scoring according to the head position and the presence of a difficult airway. Korean J Anesthesiol. 2011 Apr;60(4):244-9. doi: 10.4097/kjae.2011.60.4.244. Epub 2011 Apr 26. |
| 33174199 | Derived | Park JY, Yu J, Hong JH, Hwang JH, Kim YK. Head elevation and laryngeal mask airway Supreme insertion: A randomized controlled trial. Acta Anaesthesiol Scand. 2021 Mar;65(3):343-350. doi: 10.1111/aas.13742. Epub 2020 Nov 28. |
| D052776 |
| Female Urogenital Diseases |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
| D000091642 | Urogenital Diseases |
| D001745 | Urinary Bladder Diseases |
| D014570 | Urologic Diseases |
| D052801 | Male Urogenital Diseases |