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Anaesthesia. 2016 Aug;71(8):921-9. doi: 10.1111/anae.13446. Epub 2016 Mar 19.

A randomised controlled trial comparing meat-based with human cadaveric models for teaching ultrasound-guided regional anaesthesia.

Author information

1
Liverpool Hospital, Sydney, New South Wales, Australia.
2
Changi General Hospital, Singapore.
3
Sir Charles Gairdner Hospital, Perth, Western Australia, Australia.
4
Macquarie University, Sydney, New South Wales, Australia.
5
Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia.

Abstract

The aim of this prospective, blinded, randomised controlled study was to compare novices' acquisition of the technical skills of ultrasound-guided regional anaesthesia using either a meat phantom model or fresh-frozen human cadavers. The primary outcome was the time taken to successfully perform an ultrasound-guided sciatic nerve block on a cadaver; secondary outcomes were the cumulative score of errors, and best image quality of the sciatic nerve achieved. After training, the median (IQR [range]) time taken to perform the block was 311(164-390 [68-600]) s in the meat model trained group and 210 (174-354 [85-600]) s in the fresh-frozen cadaver trained group (p = 0.24). Participants made a median (IQR [range]) of 18 (14-33 [8-55]) and 15 (12-22 [8-44]) errors in the two groups respectively (p = 0.39). The image quality score was also not different, with a median (IQR [range]) of 62.5 (59.4-65.6 [25.0-100.0])% vs 62.5 (62.5-75.0 [25.0-87.5])% respectively (p = 0.58). The training and deliberate feedback improved all participants' block performance, the median (IQR [range]) times being 310 (206-532 [110-600]) s before and 240 (174-354 [85-600]) s after training (p = 0.02). We conclude that novices taught ultrasound scanning and needle guidance skills using an inexpensive and easily constructed meat model perform similarly to those trained on a cadaveric model.

KEYWORDS:

education; training; ultrasound-guided regional anaesthesia

PMID:
26993374
DOI:
10.1111/anae.13446
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