Document Detail

Routine use of the intubating laryngeal mask airway results in increased upper airway morbidity.
MedLine Citation:
PMID:  11444458     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The classic laryngeal mask airway (LMA) has a soft, silicone tube and the intubating laryngeal mask airway (ILM) has a rigid, silicone-coated steel tube. We compare postoperative pharyngolaryngeal morbidity in patients randomised to receive either device. METHODS: Sixty-five female patients (ASA physical status class I or II, aged 18-80 yr) undergoing balanced regional anesthesia for gynecological laparotomy expected to last one to two hours were randomly assigned for airway management with the LMA or ILM. Intracuff pressure was maintained at 60 cm H20. Postoperative pharyngolaryngeal morbidity (sore throat, difficulty swallowing, sore mouth, sore neck/jaw, hoarseness) was assessed at two, 24 and 48 hr by blinded investigators. RESULTS: The number of insertion attempts and duration of anesthesia was similar between groups. Sore throat was more common for the ILM at two hours (44 vs 15%, P=0.01), 24 hr (59 vs 21%, P=0.008) and 48 hr (34 vs 3%, P=0.005). Sore mouth was more common for the ILM at two hours (16 vs 0%, P=0.02) and 24 hr (12 vs 0%, P=0.04), but not at 48 hr (6 vs 3%). Difficulty swallowing was more common for the ILM at two hours (25 vs 0%, P=0.04), but not at 24 hr (31 vs 3%) and 48 hr (12 vs 9%). There were no differences in the incidence of sore jaw/neck (ILM, 3-12%; LMA, 0-3%) and hoarseness (ILM, 12-31%; LMA, 16-18%). There was no correlation between postoperative pharyngolaryngeal morbidity and duration of anesthesia. CONCLUSION: Pharyngolaryngeal morbidity is more common with the ILM than the LMA following anesthesia lasting one to two hours.
S Kihara; Y Yaguchi; J Brimacombe; S Watanabe; N Taguchi
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Canadian journal of anaesthesia = Journal canadien d'anesthésie     Volume:  48     ISSN:  0832-610X     ISO Abbreviation:  Can J Anaesth     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-07-10     Completed Date:  2001-12-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8701709     Medline TA:  Can J Anaesth     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  604-8     Citation Subset:  IM    
Department of Anaesthesia, Mito Saiseikai General Hospital, Ibaraki, Japan.
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MeSH Terms
Gynecologic Surgical Procedures
Intubation, Intratracheal / adverse effects*,  methods*
Laryngeal Masks / adverse effects*
Larynx / injuries*
Middle Aged
Pharyngitis / epidemiology
Pharynx / injuries*

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