What is an emg and nerve conduction test for?

Nerves & muscles. Emg and nerve conduction studies are used to detect abnormalities of nerves and muscles. The test evaluates nerve roots as they exit your spine, the nerve plexus, peripheral nerves, the nerve-muscle junction, and muscle itself. It can detect pinched/compressed nerves (sciatica, carpal tunnel, and others), muscle disorders, neuropathy, and many other neuromuscular conditions.
Nerve & muscle dis. An EMG is used to evaluate muscle fuction, and neuromuscular transmission. It can differentiate inflammatory, post inflammatory disorders etc. From the more chronic degenerative myopathies. Ncs evaluates nerve transmission. It is used to localize sites of compression/trauma, can assist in the determination of types of neuropathy, and provides prognosis in disorders such as bell's palsy & gbs.

Related Questions

What does a normal emg/nerve conduction test tell you?

No pinched nerves. A normal test would tell you that the nerves tested are not pinched or slow. The normal EMG (the needle part of the test) would tell you that the muscle are not showing signs of damage (to either the muscle itself or the nerves). Read more...
Interpretation. Assuming the test was comprehensive and technically competent, this can eliminate large fiber neuropathy, and most muscle diseases. But does not eliminate small fibre neuropathy, or disease of brain and/or spinal cord. Symptoms due to intermittent nerve compression are not fully excluded either. Read more...

What can I expect from an emg, or nerve conduction test?

Diagnosis. Using small needles and mild electrical shocks, the EMG can test normal vrs abnormal nerve and muscle function, and show muscle, nerve, or neuromuscular connection problems. Diagnosis of a pinched nerve in neck or back or leg or arm can be documented. Based on this test, appropriate treatment can be initiated. Read more...
Tolerable discomfort. There are two parts to an EMG test: nerve conduction studies and electromyography. Nerve conduction studies feel like a short, electrical impulse and are, in a word, annoying. Emg uses a fine wire electrode to record from muscles and feels like an insect bite. It is not as bad as a shot or IV or blood draw. Several muscles and several nerves are usually checked. Read more...

Two part? Whats the difference bettween an EMG and nerve conduction test AND is it more painful or less if you have nerve damage?

Emg. As far as I know EMG and nerve conduction study are one in the same . There is some pain and yes if you have a nerve injury and the area is already inflamed it could hurt more. The test is important to help figure out what's the source of your pain. :) Read more...
There are two parts. Nerve conduction study: Electrodes are put on skin over a nerve. Mild electric shocks (not painful) cause axons to transmit action potentials (nerve impulses). Velocity & amplitude (speed & strength) of impulses are measured. This measures nerve's function. Electromyogram: Needle electrodes are stuck in muscles innervated by a nerve. Electrical activity of muscle => data on nerve function. Read more...

What does denervation in calf area on EMG mean? Also nerve conduction test showed differences in ankles. Bad signs?

Peripheralneuropathy. What you are describing is not normal. Do you diabetes or any type disease that can cause a peripheral neuropathy? Should discuss with your physician and or a neurologist. Without any other symptoms, unlikely to be from spinal source. Read more...

I was diagnosed with polyneruopathy after a nerve conduction test and I think a emg. Now my knee is swollen and hurting. What happens now?

Find out why. Swollen knee is not directly related to peripheral neuropathy. You need to work up why you have peripheral neuropathy (? Diabetes, vitamin def, autoimmune dz, etc). The underlying cause may be related to your swollen knee. Read more...
Could be something. Serious. If you did not injure it, possibilities are gout, pseudogout, or infection. If you had an injury, it is probably bleeding from meniscus or ligament. Or it could be thrombophlebitis. Go see your doctor immediately. Read more...

Foot pain for past 1.5 years. Foot tingling started couple months ago. EMG & Nerve conduction done results came back normal. How accurate are the test?

Generally accurate. These tests are generally pretty accurate however this accuracy depends on the equipment and the skill of the person performing the tests. It is important to remember that even though the test results may show the nerves to have normal function, it is entirely possible to still feel pain. Read more...

What could be the cause of tingling/burning in lower legs that only sets in in the evening. MRI, emg, nerve conduction tests all normal. B12 normal.

? Diabetes Mellitus. which is one of the most common basis for paresthesias/neuropathy & sometimes becomes a problem well before DM is recognized. Look up neuropathy on Google, study: https://www.healthtap.com/#user_questions/130706 & https://www.healthtap.com/#user_questions/1510334 for background & get HbA1c; optimal HbA1c <5.0%. Go HFLC, study: DietDoctor.com, my answers, optimize NMR lipoproteins, get SBP <120mmHg. Read more...

What is a electromyogram (emg) and nerve conduction studies most commonly used to diagnosis?

EMG/NCS. These are neurophysiological tests that are useful in diagnosing peripheral nerve and muscle disorders. Read more...
Nerve ; muscle test. Emg/ncs is a test that uses small electric shocks along nerve tracts, and needles into muscles.. While small nerve fibers cannot be accurately tested, middle and large nerves will demonstrate changes in transmission times and rhythm. Muscle, will demonstrate changes in wave form, and resting potential. Neuropathy, polio, myopathy, radiculopathy, entrapped nerves, carpal, cubital/ carpal tunnel, . Read more...