TOF-tube.

Anesth Analg

Published: January 2000

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http://dx.doi.org/10.1097/00000539-200001000-00060DOI Listing

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The variability or inaccuracy of acceleromyographic measurements could interfere with the interpretation of the train-of-four (TOF) ratio during neuromuscular block (NMB) recovery. This study evaluated the precision and performance of the Philips Intellivue NMT module (NMT) before (part 1) and after (part 2) several technical upgrades (i.e.

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Performance of acceleromyography with a short and light TOF-tube compared with mechanomyography: a clinical comparison.

Eur J Anaesthesiol

August 2014

From the Department of Anaesthesiology, University of Louvain, CHU UCL Mont-Godinne-Dinant, Yvoir (PED, JM, MG, CD), MDB Engineering, Spin-off University of Brussels ULB, Brussels (MDB), Scientific Support Unit, University of Louvain, CHU UCL Mont-Godinne-Dinant, Yvoir, Belgium (JJ), and Department of Anaesthesiology, University Hospital, Geneva, Switzerland (AH).

Background: Disturbances in the thumb's movement interfere with the functioning of acceleromyography in many clinical settings. The short and light (SL) train-of-four (TOF)-Tube is a new version of a rigid tubular device that was designed to protect the thumb from external disturbances during surgery, even when the hand is not accessible by the anaesthesiologist.

Objective: To compare the precision and performance of acceleromyography performed with the aid of the SL TOF-Tube (AMGTT) with standard isometric mechanomyography (MMG).

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Acceleromyography is commonly used to monitor perioperative neuromuscular blockade and to prevent residual neuromuscular blockade at the time of tracheal extubation. However, there are problems associated with this method, such as obtaining stable values, particularly beneath the surgical fields. We compared TOF ratios obtained on both hands simultaneously using on one side mechanomyography and on the other acceleromyography, installed in four different ways: the hand simply lying on a board, fingers fixed with tape, use of the hand adaptor or the TOF-tube.

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Neuromuscular blockade monitoring at the adductor pollicis has become easier using acceleromyography. In order to guarantee a reliable analysis of its acceleration, the thumb movement has to be free and protected from external influences. To this end, we describe here-in two hand fixation- and protection-devices for use with acceleromyography.

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