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sensory nerve action potential

   Also found in: Acronyms 0.01 sec.
sensory nerve action potential (SNAP),
n the electrical impulse that carries information along a sensory neuron.


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In addition, reduced sensory nerve action potentials in the median and ulnar nerves alone, without documentation of neuropathy in additional nerves, cannot be used as evidence of a diffuse axonal polyneuropathy, since both of these nerves are commonly prone to entrapment neuropathies.
After cerebrospinal fluid and blood chemistry were found to be normal, the patient underwent nerve conduction studies, which revealed absent sural sensory nerve action potentials bilaterally, increased bilateral F-wave latency along the distal portion of the tibial nerves, and moderate slowing of nerve conduction velocity in the peroneal nerves and tib ial nerves bilaterally.
Electrodiagnostic studies showed widespread but variable denervation, reduced compound muscle action potentials (CMAPs), and normal sensory nerve action potentials (SNAPs), consistent with a severe, asymmetric process affecting anterior horn cells or motor axons.
 
 
 
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