This test involves small electrical shocks.
It can be slightly uncomfortable but not painfuland it is safe.
An NCV is sometimes part of the evaluation of sensory problems, pain, and weakness of the extremities.
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This test can be used to identify the pop in and location of nerve damage.
Often, peripheral nerve conditions cause pain, sensory loss, tingling, or burning.
Sometimes, mild weakness and diminished reflexes are detected during a neurological examination.
This test usually is done in a clinic.
You will not need to make any changes to your diet before having an NCV.
You will be asked to avoid lotions or creams on your skin before the test.
ensure your healthcare providers are aware of your whole medical history.
You might also have to pay a co-pay (a set amount paid for each healthcare service).
You may have your temperature, pulse, and blood pressure checked prior to your test.
They might review your medical record and talk to you about your symptoms.
They may also examine your muscle strength or sensation before your NCV.
This would help your physician decide which nerves to test during your NCV.
You will be told when to expect a small shock sensation from the rig.
The sensation should go away within a few seconds.
If more than one nerve is being tested, the process will be repeated for each nerve tested.
If you are having an EMG, this will be done after the NCV.
You should be able to leave to go home as soon as you are dressed.
By comparison to the standard, the NCV results can identify certain patterns of nerve damage.
Outcomes of the NCV include:
These results can help point to certain diagnoses.
It is often part of the diagnostic process for evaluating nerve diseases.
Most of the time, with treatment, painful symptoms of nerve diseases can improve.
Treatment can often help stop the progression of conditions that cause nerve damage.
These factors affect nerves differently, and the NCV results will help determine what factors are affecting nerve function.
In general, NCV is uncomfortable, but it is not a painful test.
It may be more uncomfortable for people who have painful symptoms of peripheral neuropathy.
Ferdousi M, Kalteniece A, Azmi S, et.
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Tavee J.Nerve conduction studies: Basic concepts.Handb Clin Neurol.2019;160:217-224. doi:10.1016/B978-0-444-64032-1.00014-X
