Clinical trial · Interventional
Effect of Head Elevation on LMA Insertion
Effect of Head Elevation on LMA Supreme Insertion in Patients Undergoing Transurethral Resection of Bladder Tumor: a Randomized Controlled Trial
NCT04229862CI-TRIAL-00045317completedN/AClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
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.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Laryngeal Masks | — | UNRESOLVED | — |
| Urinary Bladder Neoplasms | Bladder Neoplasm | ALIAS | 0.90 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Laryngeal mask airway insertion | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- Evaluation with 14 cm high pillow
- description
- When inserting laryngeal mask airway, head elevation is performed using a 14 cm high pillow.
- interventionNames
- Procedure: Laryngeal mask airway insertion
- type
- ACTIVE_COMPARATOR
- label
- Evaluation with 7 cm high pillow
- description
- When inserting laryngeal mask airway, head elevation is performed using a 7 cm high pillow.
- interventionNames
- Procedure: Laryngeal mask airway insertion
Primary outcomes (1)
- measure
- First attempt success rate
- timeFrame
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 20 Years
- Maximum age
- 79 Years
Show eligibility criteria text
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
References
Publications (6)
- BACKGROUNDMohta 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. PMID 30104838
- BACKGROUNDKatsiampoura 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. PMID 26401265
- BACKGROUNDHorton 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. PMID 2917111
- BACKGROUNDTakenaka 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. PMID 17272252
- BACKGROUNDJun 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. PMID 21602973
- DERIVEDPark 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. PMID 33174199