EMG is a diagnostic procedure to access the health of muscles and the nerve cells that control them (motor neurons). Muscles move when nerve signals from the brain tell them to get to work, EMG measures how well these muscles respond to those signals. EMG help reveal nerve dysfunction, muscle dysfunction or disorders with nerve-to-muscle signal transmission. Motor neurons transmit electrical signals that cause muscles to contract. An EMG uses tiny devices called electrodes to translate these signals into graphs, sounds or numerical values.
NCVS is a diagnostic procedure that evaluate the electrical potentials from peripheral nerves. Nerve signals are electrical impulses that travel quickly throughout the nervous system. Its helps to access the physiological status of a nerve fiber. Sometimes, problems with the electrical activity in nerves can cause pain, tingling or weakness of muscles. NCS measures how fast and how strong the electrical activity is in a nerve.
This diagnostic procedure helps to identify a largely benign disorder and, indirectly, exclude other possibly life threatening conditions. Also help to see how well a patient is recovering from a nerve injury.
Some of the Indications for EMG/NCVS include the following
Preparing a patient for EMG/NCVS
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