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Optimal conditions for Laryngeal Mask Airway insertion in children can be determined by the trapezius squeezing test.

 Chul Ho Chang  ;  Yon Hee Shim  ;  Yang-Sik Shin  ;  Ki-Young Lee 
 Journal of Clinical Anesthesia, Vol.20(2) : 99-102, 2008 
Journal Title
 Journal of Clinical Anesthesia 
Issue Date
STUDY OBJECTIVE: To evaluate the trapezius squeezing test as a criterion of adequate anesthetic depth for Laryngeal Mask Airway (LMA) insertion in children without neuromuscular blocking agents. DESIGN: Prospective, randomized clinical trial. SETTING: Operating room of a university hospital. PATIENTS: 45 ASA physical status I and II children, aged one to 6 years, undergoing minor surgical procedures. INTERVENTIONS: An LMA was inserted in each child after the trapezius squeezing test turned to be negative. MEASUREMENTS: Presence of coughing, gagging, gross purposeful movements, breath holding, laryngospasm, or desaturation during or within one minute of LMA insertion were recorded. Elapsed time of LMA insertion, end-tidal sevoflurane concentration, blood pressure, and heart rate values were also noted. MAIN RESULTS: LMA insertion was successful in 41 patients. Elapsed time to complete insertion was 5.7 +/- 1.9 minutes, and end-tidal sevoflurane concentration was 3.6 +/- 1.1 vol%. No marked hemodynamic changes occurred in any child. CONCLUSIONS: The trapezius squeezing test is a reliable clinical indicator to assess adequate anesthetic depth for LMA insertion in children without neuromuscular blocking agents.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
신양식(Shin, Yang Sik)
심연희(Shim, Yon Hee) ORCID logo https://orcid.org/0000-0003-1921-3391
이기영(Lee, Ki Young) ORCID logo https://orcid.org/0000-0003-4893-3195
장철호(Chang, Chul Ho) ORCID logo https://orcid.org/0000-0001-5647-8298
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