Indian Journal of Respiratory Care

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VOLUME 1 , ISSUE 2 ( July-December, 2012 ) > List of Articles

Original Article

Comparison of two techniques of laryngeal mask airway insertion – is reverse technique better than standard?

KN Prasad, Prabhu Manjunath, Shailza Khara

Keywords : LMA, standard technique, reverse technique, fibreoptic view, sore throat

Citation Information : Prasad K, Manjunath P, Khara S. Comparison of two techniques of laryngeal mask airway insertion – is reverse technique better than standard?. Indian J Respir Care 2012; 1 (2):149-155.

DOI: 10.5005/ijrc-1-1-149

License: NA

Published Online: 01-12-2022

Copyright Statement:  NA


Background: Standard technique of Laryngeal Mask Airway (LMA) insertion has been routinely and successfully employed in adults. This technique has failed in certain instances prompting evaluation of alternative techniques. ‘Reverse technique’ is one which is studied and employed successfully in paediatric population. However, this has not been widely studied in adults. Materials and methods: In this randomised, prospective, single blinded study, we compared the standard technique and reverse technique of LMA insertion with respect to success rate, time taken for successful insertion, confirming the final position of LMA by performing a fibreoptic evaluation of the glottic view and incidence of postoperative sore throat in 60 adult patients undergoing surgery under general anaesthesia. Statistical analysis used: Using SPSS 11.5TM software, Independent samples’ test and Chi-square test was applied to the results where appropriate. A p value of < 0.05 was considered as statistically significant. Results: LMA insertion was successful in all patients using standard technique and all but one patient using reverse technique. Insertion was complete with in 30 seconds with the longest being 24.08 seconds in reverse technique group. Grade 1 or 2 glottic view on fibrescopy was obtained in 90.3% patients in the standard technique group as against 100% patients in reverse technique group. There was no significant difference in immediate or delayed incidence of sore throat. Conclusions: Reverse technique of LMA insertion has a comparable success rate with the standard technique in adult patients undergoing general anaesthesia.

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