What are electromyography (EMG) and nerve conduction studies ?
Electromyography (EMG) and nerve conduction studies Test to determine the electronic force of a muscle. and nerves The nerves in the field send electronic signals to make the muscles react in a particular way. When the muscle responds, it gives these signals, which can then be measured.
- The EMG test evaluates the electronic signals your muscles make when they are at rest and when they are tightened.
- A nerve conduction study It measures how quickly and how well the electronic signals from your body move through your body. nerves .
EMG tests and nerve conduction studies It can help you recognize if you have enormous muscular anal power , nerves or both. These tests can be performed individually, but are usually performed simultaneously.
Other names: electrodiagnostics. study EMG test, Eletromygram, NCS, nerve conduction velocity, NCV
What are they used for?
EMG and nerve conduction studies They are used to diagnose all kinds of muscle disorders and diseases. and nerve Disease. EMG analysis helps us to know if our muscles respond properly to to nerve signals. Nerve conduction studies help diagnose nerve about an injury or disease.EMG testing is used by and nerve conduction studies care providers are executed together can determine if symptoms are caused by a muscle disorder or a muscle disease. a nerve problem.
Why is an EMG analysis needed? a nerve conduction study ?
These tests may be necessary if there are signs of muscle disorders. or nerve These signs include
- muscle weakness
- Tingling or numbness in the arms, legs, hands, feet, and/or face
- Muscle cramps, spasms, or spasms
- Paralysis of all muscles
What Happens During the EMG Test and nerve conduction study ?
During the EMG test:
- You lie down on a creek or bed.
- Your doctor will remove skin from the muscle to be tested.
- Your doctor places a needle in the muscle. The needle electrode is a special wire that runs a smooth electronic current. When the electrode is inserted, you will feel little pain or discomfort.
- The device records the strength of the muscle and the muscle is still calm.
- The muscle is then asked to tighten slowly and steadily (contract). The device registers this promotion.
- Electrodes can be transmitted to register power to different muscles.
- The electrical force is recorded and displayed on the video screen. The work is displayed in the form of wavy and stinging columns. The exercises can continue to be admitted and transmitted to the audio recorder. You can listen to the popping sound while tightening your own muscles.
For a nerve conduction study :
- You lie down on a creek or bed.
- The supplier will check one or more electrodes against specific electrodes. nerve or nerves With the help of tape or pasta. The electrodes, called stimulating electrodes, give equal electronic pulses.
- The supplier attaches all different kinds of electrodes to the muscle or muscles controlled by the data nerves . These electrodes record the response to electronic stimulation. the nerve .
- The physician sends small electronic pulses through the stimulating electrodes to stimulate the muscles. the nerve The signal is sent to the muscle.
- This may cause a slight tingling sensation.
- The physician records the time the muscle needs to respond to the stimulation. the nerve signal.
- The speed of the response is. the conduction velocity.
If both tests are performed, the nerve conduction study will be done first.
Do I need to make anything to prepare for these tests?
Tell your doctor if you have a pacemaker or cardiac defibrillator. If you have one of these devices, you will need to take special steps to prepare for the test.
Wear loose, comfortable clothing that can easily be done in the testing area or take off if you must change clothes in hospital garb.
Make sure your skin is clean. Do not use lotions, creams or perfumes for one or two days of testing.
Was there any danger in the test?
You may feel slight pain or cramps during EMG. As with mild electric shock, you may experience a sickening sensation at work. a nerve conduction study .
What do the results mean?
If the total is not normal, this may indicate a number of different disorders. It depends on which muscles are or nerves affected, it could mean one of the following things
- Carpal tunnel syndrome, a muscle condition nerves poor with the hands. It is usually not serious but can be painful.
- Hernia – a stand that occurs when the S o-Called Disk, which is part of the spine, is damaged. This puts pressure on the spine, causing pain and numbness.
- Guillain-Barré syndrome is an autoimmune disease the nerves . It can cause numbness, tingling, and paralysis. The majority of people recover from the condition after treatment.
- Myasthenia is a rare disorder that causes muscle fatigue and impotence.
- Muscular dystrophy is a genetic disorder that severely affects muscle structure and function.
- Diseases of the charcot-marie-tooth are, nerve Injuries occur primarily in the arms and legs.
- Amyotrophic lateral sclerosis (ALS), also known as Lou’s disease. It is an increasingly frequent and ultimately fatal disease of the nerve cells in the brain and spinal cord. It affects all the muscles you use to drive, talk, eat, and breathe.
If you have questions about your results, consult your own physician
With permission of MedlinePlus from the National Library of Medicine.
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