What To Expect: Nerve conduction studies are usually done before an
EMG. NCS testing may take from 15 minutes to hour or more, depending upon how
many ares of the body are studied.
You will feel a brief, burning pain, a
tingling sensation and a twitching of the muscle each time the electrical pulse
is applied. It feels similar to the kind of tingling you feel when your rub your
feet on the carpet and then touch a metal object.
Preprocedure: Several flat metal disc electrodes are attached to
your skin with tape. A shock emitting electrode is placed directly over the
nerve to be studied and a recording electrode is placed over the muscles
supplied by that nerve. Repeated, brief electrical pulses are administered to
the nerve, and the time it takes for the muscle to contract in response to the
electrical pulse is recorded.
Postprocedure: There are no risks associated with NCS. Nothing is
inserted into the skin, so there is no risk of infection.