The effect of neuromuscular blockade on pedicle screw stimulation thresholds

Nerve root stimulation thresholds were studied relative to the level of neuromuscular blockade in patients undergoing lumbar decompression surgery. To determine what levels of intraoperative neuromuscular blockade can be used during pedicle screw stimulation. Previous studies of intraoperative pedic...

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Bibliographic Details
Published in:Spine (Philadelphia, Pa. 1976) Pa. 1976), 2000-10, Vol.25 (19), p.2526-2529
Main Authors: MINAHAN, Robert E, RILEY, Lee H, LUKACZYK, Tamara, COHEN, David B, KOSTUIK, John P
Format: Article
Language:English
Subjects:
Biological and medical sciences
Bone Screws
Decompression, Surgical
Electric Stimulation - methods
Humans
Lumbar Vertebrae - surgery
Medical sciences
Monitoring, Intraoperative
Nerve Compression Syndromes - physiopathology
Nerve Compression Syndromes - surgery
Neuromuscular Blockade
Orthopedic Procedures
Orthopedic surgery
Pain, Postoperative - etiology
Pain, Postoperative - physiopathology
Pain, Postoperative - prevention & control
Radiculopathy - complications
Radiculopathy - physiopathology
Radiculopathy - prevention & control
Sensory Thresholds - physiology
Spinal Nerve Roots - physiopathology
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
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Summary:Nerve root stimulation thresholds were studied relative to the level of neuromuscular blockade in patients undergoing lumbar decompression surgery. To determine what levels of intraoperative neuromuscular blockade can be used during pedicle screw stimulation. Previous studies of intraoperative pedicle screw stimulation thresholds have failed to determine the effect of neuromuscular blockade on the stimulation threshold. Twenty-one roots in 10 patients undergoing lumbar decompression surgery were studied at different levels of neuromuscular blockade. Ninety-five nerve root thresholds were determined relative to level of blockade. Neuromuscular blockade below 80% provides nerve root thresholds similar to thresholds without blockade. Neuromuscular blockade should be less than 80% when using pedicle screw electrical stimulation testing.
ISSN:0362-2436
1528-1159
DOI:10.1097/00007632-200010010-00016