Hemifacial Spasm Clinical Trial
Official title:
Determination of Target of Adequate Partial Neuromuscular Blockade for Electrophysiologic Monitoring During Microvascular Decompression Surgery
There have been reports of monitoring LSR during MVD surgery helps predicting the clinical outcome of MVD.However, there have been no evidence of which degree of partial neuromuscular blockade should be performed or no neuromuscular blockade could be performed during LSR monitoring. Therefore, we performed a randomized controlled trial to evaluate the effect of different degree of partial neuromuscular blockade, including no neuromuscular blockade on the LSR monitoring for MVD surgery.
Hemifacial spasm develops by vascular compression of facial nerve at the root exit zone from
brain stem. Microvascular decompression (MVD) is known for its curative treatment. Lateral
spread response (LSR) is a kind of pathologic electromyographic (EMG) wave form which
develops when facial nerve is compressed by vessel. There have been reports of monitoring
LSR during MVD surgery helps predicting the clinical outcome of MVD.
As neuromuscular blockade during LSR monitoring decreases the amplitude of EMG, partial
neuromuscular blockade is usually maintained during general anesthesia for MVD. However,
there have been no evidence of which degree of partial neuromuscular blockade should be
performed or no neuromuscular blockade could be performed during LSR monitoring. Therefore,
we performed a randomized controlled trial to evaluate the effect of different degree of
partial neuromuscular blockade, including no neuromuscular blockade on the LSR monitoring
for MVD surgery.
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Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor)
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