A comparison of the disposable Ambu^® AuraOnce^™ Laryngeal Mask with the reusable LMA Classic^™ laryngeal mask airway

Authors: Sudhir, G.¹; Redfern, D.²; Hall, J. E.³; Wilkes, A. R.⁴; Cann, C.⁵

Source: Anaesthesia, Volume 62, Number 7, July 2007 , pp. 719-722(4)

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Abstract:

Summary

Single-use supraglottic airway devices are now available and are intended to be comparable with the reusable LMA Classic^™ laryngeal mask airway. We performed a randomised cross-over study comparing the Ambu^® AuraOnce^™ Laryngeal Mask with the LMA Classic. Fifty patients participated in the trial. Success rates for insertion at the first attempt were similar (92% with the Ambu and 84% with the LMA Classic; p = 0.22). The volumes of air required to inflate the cuff to produce a seal were similar, but the cuff pressure was lower for the Ambu Laryngeal Mask (median (IQR [range]) 18 (10-31 [0-100] cmH₂O) than the LMA Classic 27 (17-50 [4-90] cmH₂O; p = 0.007). Visual analogue scores for ease of insertion were 87 (73-93 [26-97]) mm for the Ambu and 84 (60-89 [18-96]) for the LMA Classic (p = 0.017). Complications were similar in both groups. We suggest that the disposable Ambu Laryngeal Mask is an acceptable alternative to the reusable LMA Classic.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1365-2044.2007.05067.x

Affiliations: 1: Locum Consultant Anaesthetist 2: Specialist Registrar 3: Reader 4: Senior Research Fellow 5: Research Co-ordinator, Department of Anaesthetics and Intensive Care Medicine, Wales College of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK

Publication date: 2007-07-01