• Br J Anaesth · Mar 2005

    Use of three-dimensional animation for regional anaesthesia teaching: application to interscalene brachial plexus blockade.

    • M W Lim, G Burt, and S V Rutter.
    • Nuffield Department of Anaesthetics, John Radcliffe Hospital, Headley Way, Headington, Oxford OX3 9DU, UK. michael.lim@ntlworld.com
    • Br J Anaesth. 2005 Mar 1;94(3):372-7.

    BackgroundUsing commercial computer graphics software (TrueSpace), we constructed a virtual-reality model for teaching interscalene brachial plexus block. This tool combines the clarity of schematic drawings and the clinical relevance of video clips and live demonstrations. The aim is to accelerate learning and aid retention of relevant information.MethodWe made a series of continuous short virtual-reality animations demonstrating the steps to perform an interscalene block. Superficial structures were made transparent to show the anatomical relevance of landmarking and needle manipulation. The clips were presented to delegates at a training course in Oxford. Delegates were surveyed to ascertain whether or not the presentation enhanced their understanding of anatomy and regional block technique. Before and after the presentation, delegates indicated surface landmarking, needle angulation, and movement on photographs of the lateral and anterolateral neck views of two volunteers. The markings were analysed by two independent assessors and rated as 'good', 'bad', or 'ungradeable'. The percentage improvement for each skill group was calculated and McNemar's test applied.ResultsOf 24 respondents, the majority thought that the presentation enhanced their understanding of the anatomical (87.5%) and technical principles (79.2%) of interscalene blocks. Analysis of the marked photographs showed an overall 24.1% improvement in landmarking skills after the teaching presentation (P<0.001). Changes were significant in moderately experienced skill groups (P<0.001) but not for the very experienced (P>0.5) and the inexperienced skill groups (P<0.1). There was 76.3% concordance in scoring between the two assessors.ConclusionThree-dimensional animation is a promising new tool to accelerate the learning of regional anaesthetic techniques.

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