conduction block


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con·duc·tion block

failure of impulse transmission at some point along a nerve fiber, although conduction along the segments proximal and distal to it are unaffected; clinically, most often the result of an area of focal demyelination or, less often, transient ischemia; when caused by focal trauma involving the periperal nervous system, called neurapraxia.

con·duc·tion block

(kŏn-dŭkshŭn blok)
Failure of impulse transmission at some point along a nerve fiber, although conduction along the segments proximal and distal to it are unaffected; clinically, most often the result of an area of focal demyelination or, less often, transient ischemia.
References in periodicals archive ?
Acute motor conduction block neuropathy followed by axonal degeneration and poor recovery.
8 CB: conduction block, NA: not avaible, 2nd F-W: second finger-wrist, 5thF-W: fifth finger-wrist, EDB: extansor digitorum brevis, AHB: abductor hallusis brevis, CMAP: Compound muscle action potential, SNAP: Sensory nerve action potential
Schauf and Davis further suggested that altering sodium and potassium channels might help to produce increased current density in demyelinated fibers, thereby minimizing the degree of conduction block.
This may result in "myasthenic phenomenon," causing weakness and muscle fatigue in distal muscles after repeated contractions, eventually leading to conduction block.
La Meir commented in his presentation, "Transmurality equals conduction block, and conduction block must be measured during all surgical ablation procedures as a Standard of Care, thus enhancing the ability to achieve a cure for our Patients.
With the issuance of the '457 patent, which claims a method for forming the circumferential conduction block using a balloon or other expandable member with any of a wide variety of ablation sources, the company is in a position to protect our pioneering technology for pulmonary vein isolation," says Dr.
The induction of AF under autonomic nervous influence is usually attributed to inhomogeneities and dispersion of refractory periods, the occurrence of conduction blocks and the appearance of reentrant circuits (8).
to treat right-sided AF, and now the REVELATION Helix for left-sided pulmonary vein treatment, Cardima in on track to have the tools approved to allow physicians to effectively treat patients suffering from AF on both the right and left side of the heart, creating any combination of linear and circumferential conduction blocks.