SNAP Neurology Abbreviation

Sensory Nerve Action Potential

The Sensory Nerve Action Potential (SNAP) is a critical measurement in neurology, reflecting the electrical activity generated by sensory nerves in response to stimulation. This potential is pivotal for diagnosing various neuropathies and understanding the functional integrity of sensory pathways. It is obtained through electrophysiological studies, where electrodes are placed on the skin overlying a sensory nerve, and the response to electrical stimulation is recorded. The amplitude and latency of the SNAP provide valuable insights into the health and functionality of sensory nerves, aiding in the identification of conditions such as peripheral neuropathy, carpal tunnel syndrome, and other sensory nerve disorders.

The interpretation of SNAP results requires a comprehensive understanding of neurophysiology and the anatomical distribution of sensory nerves. Abnormalities in the SNAP can indicate damage or disease affecting the sensory nerve fibers, either at the level of the axon or the myelin sheath. Clinicians rely on these findings to differentiate between axonal and demyelinating neuropathies, which is essential for determining the appropriate treatment strategy. The SNAP is thus a cornerstone in the electrophysiological assessment of sensory nerve function, offering a window into the complex workings of the nervous system.