nerve conduction study
A neurophysiological test that measures the speed and strength of electrical signals traveling through peripheral nerves.
Full Definition
A nerve conduction study (NCS) is a diagnostic procedure that evaluates the function of peripheral nerves by measuring how quickly and effectively electrical impulses move through them. During the test, surface electrodes are placed on the skin over specific nerves, and mild electrical stimuli are applied to generate nerve impulses. The resulting electrical responses are recorded and analyzed to determine nerve conduction velocity, amplitude, and latency. NCS is commonly used to diagnose peripheral neuropathies, entrapment syndromes, and nerve injuries. The procedure is often performed alongside electromyography to provide a comprehensive assessment of neuromuscular function.
Usage
Usage note: Often abbreviated as NCS in medical records, but spell out in patient communications.
In Context
- "The nerve conduction study revealed prolonged distal latencies consistent with carpal tunnel syndrome." — Clinical neurophysiology report
- "Patient scheduling includes both electromyography and nerve conduction study for comprehensive peripheral nerve assessment." — Clinical scheduling documentation