At a glance
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Comparison of Mechanomyographic 100 Versus 200 Hz 5 Second Tetanic Fade Ratios During Neuromuscular Block Recovery
In Brief
A clinical study evaluating Isometric Thumb Force (isometric mechanomyography) compared to TOF-Watch SX (acceleromyography) for Neuromuscular Blockade. Completed, enrolled 20 participants across 1 site.
Detailed Summary
Two recent pilot studies suggested the potential interest of 100 and 200 Hz tetanic stimulations to detect with mechanomyography (MMG) very low levels of residual neuromuscular blockade (NMB). The Tetanic Fade Ratio (TFR, residual force after 5 seconds / maximal force) measured quantitatively by MMG during tetanic stimulation at 100 or 200 Hz could provide today a more consistent response than the train-of-four (TOF) ratio provided by acceleromyography (AMG) to this search for detection of low levels of residual NMB. This study was designed to evaluate for the first time in anesthetized patients the evolution of NMB spontaneous recovery with 5-second 100 and 200 Hz tetanic stimulations compared to TOF, and to test the hypothesis that a 200 Hz TFR would better and longer detect low levels of residual paralysis than AMG TOF ratio and 100 Hz TFR.
Study Details
Timeline
Interventions
Comparison of mechanomyographic measurements of thumb adduction's force induced by 100 versus 200 Hz 5 seconds tetanic ulnar nerve stimulation during neuromuscular block spontaneous recovery monitored by acceleromyography on the controlateral arm.