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Comparison of 2 cuff inflation methods before insertion of laryngeal mask airway for safe use without cuff manometer in children

 Min-Soo Kim ; Sun-Joon Bai ; Jeong-Rim Lee ; Seung-Mok Youm ; Jung-Tak Oh 
 American Journal of Emergency Medicine, Vol.31(2) : 346~352, 2013 
Journal Title
 American Journal of Emergency Medicine 
Issue Date
PURPOSE: This prospective, randomized trial was conducted to establish whether the pediatric laryngeal mask airway (LMA) could be used without any concerns for abnormally high intra-cuff pressure when a cuff of the LMA was inflated with half the maximum recommended inflation volume or the resting volume before insertion. BASIC PROCEDURES: Eighty children 0 to 9 years of age and weighing of 5 to 30 kg scheduled for general anesthesia were included. Before insertion, the cuff of the LMA was filled with half the maximum recommended inflation volume in the Half volume group, or the resting volume by opening the pilot balloon valve to atmospheric pressure in the Resting volume group. After insertion of the LMA, intra-cuff pressure, oropharyngeal leak pressure, and leakage volume were investigated. MAJOR FINDINGS: The Half volume group showed lower mean intra-cuff pressure than the Resting volume group (49.6 ± 12.1 cm H(2)O vs 58.1 ± 13.8 cm H(2)O, P = .005). There was no difference in oropharyngeal leak pressure (22.1 ± 5.8 vs 21.7 ± 5.1 cm H(2)O, P = .757) or leakage volume between the Half volume group and the Resting volume group (0.13 ± 0.13 ml/kg vs 0.11 ± 0.12 ml/kg, P = .494) under spontaneous respiration. CONCLUSIONS: Both methods of the LMA cuff inflation before insertion provided an acceptable range of intra-cuff pressure with adequate pharyngeal sealing without any intervention after insertion.
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Anesthesiology and Pain Medicine
1. 연구논문 > 1. College of Medicine > Dept. of Surgery
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