• J Clin Monit Comput · Feb 1998

    TWITCHER: a device to stimulate thumb twitch response to ulnar nerve stimulation.

    • S Lampotang, M L Good, P M Heijnen, and J S Gravenstein.
    • Department of Anesthesiology, University of Florida College of Medicine, University of Florida Brain Institute, Gainesville 32610-0254, USA. sem@anest4.anest.ufl.edu
    • J Clin Monit Comput. 1998 Feb 1; 14 (2): 135-40.

    ObjectiveTo design and fabricate a device to simulate evoked thumb adduction in response to ulnar nerve stimulation.MethodsWe implemented a computer-controlled, motorized thumb (TWITCHER) that responds to ulnar nerve stimulation by an unmodified peripheral nerve stimulator. Clinically realistic response patterns are generated for both depolarizing and non-depolarizing muscle relaxants and three modes of stimulation (single twitch, train-of-four, tetanus).ResultsThe device has been used in a full-scale patient simulator for the last six years.DiscussionTWITCHER has been well received by participants in simulation exercises including the use of neuromuscular blocking drugs.

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