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When inserting laryngeal mask airway, head elevation is performed using a 14 cm high pillow.

When inserting laryngeal mask airway, head elevation is performed using a 7 cm high pillow.

Laryngeal mask airway insertion in patients who undergoing transurethral bladder tumor resection

Laryngeal mask airway insertion

Young-Kug Kim, MD, PhD

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.

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

The rate of success at the first attempt of laryngeal mask airway insertion

The percentage of glottic opening by fiberoptic view

The rate of success at the second attempt of laryngeal mask airway insertion

The rate of success at the third attempt of laryngeal 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.

The rate of reposition after laryngeal mask airway insertion when ventilation is ineffective or air leaks

Complications related with laryngeal mask airway insertion such as cough, vomit, aspiration, regurgitation, bleeding, laryngospasm, and bronchospasm

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Effect of Head Elevation on LMA Insertion	NCT04229862	Laryngeal Masks Urinary Bladder...	Laryngeal mask ...	20 Years - 79 Years	Asan Medical Center
Effect of Head Elevation on LMA Insertion	NCT04229862	Laryngeal Masks Urinary Bladder...	Laryngeal mask ...	20 Years - 79 Years	Asan Medical Center

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