It is commonly performed by a physiatrist or neurologist with special training for this procedure. In most cases, your doctor will perform both elements, but in some situations, only one or the other may be done. EMG testing usually takes anywhere from 30 to 90 minutes, depending on the condition being tested and findings of the study. A report that includes the results and an interpretation will be sent to your doctor.
EMG testing may result in some discomfort, but it is usually well tolerated without any need for pain medication. EMG testing is extremely safe, but talk with your doctor if you take blood thinners, have a pacemaker or implanted defibrillator before having the test. What do the results mean? Depending on which muscles or nerves are affected, it may mean one of the following: Carpal tunnel syndrome , a condition that affects nerves in the hand and arm. It's usually not serious, but can be painful.
Herniated disc , a condition that happens when a part of your spine, called a disc, is damaged. It can lead to numbness, tingling, and paralysis. Most people recover from the disorder after treatment Myasthenia gravis , a rare disorder that causes muscle fatigue and weakness. Muscular dystrophy , an inherited disease that seriously affects muscle structure and function. Charcot-Marie-Tooth disease , an inherited disorder that causes nerve damage, mostly in the arms and legs.
This is a progressive, ultimately fatal, disorder that attacks nerve cells in your brain and spinal cord. It affects all the muscles you use to move, speak, eat, and breathe.
If you have questions about your results, talk to your health care provider. References Cleveland Clinic [Internet]. Cleveland OH : Cleveland Clinic; c Electromyograms; [cited Dec 17]; [about 3 screens]. Electromyography; p. Mayo Clinic [Internet]. Mayo Foundation for Medical Education and Research; c— Amyotrophic lateral sclerosis: Symptoms and causes; Aug 6 [cited Dec 17]; [about 3 screens]. In very rare cases, a person may experience swelling of the soft tissues lymphedema or a skin infection near the puncture site after a needle EMG test.
However, if a different healthcare professional administers the test, the person will not get to see their results until they schedule a follow-up appointment with their neurologist. If the muscles are healthy, an EMG test should detect little electrical activity when the muscle is relaxed. EMG and NCV tests provide valuable information that doctors can use to diagnose muscle and nerve conditions.
Once they make a diagnosis, a doctor can recommend different treatment options. Anyone who has concerns or questions about their test result or treatment plan should speak with their doctor. An EMG test is a minimally invasive procedure that health professionals use to diagnose and monitor muscle dysfunction. Neurologists and trained technicians can administer EMG tests. During the procedure, a neurologist will insert thin, needle-shaped electrodes into a muscle.
These electrodes record the electrical activity of relaxed and contracted muscles. Neurologists tend to perform an EMG test after an NCV test, which measures how fast electrical impulses travel through motor nerves. Both EMG and NCV tests provide useful information that helps doctors determine the location and extent of muscle and nerve damage. Lymphedema is a long-term condition in which fluid collects in tissues, causing swelling.
Lymphedema most commonly affects one or both of the arms or…. Many factors can cause a muscle twitch, including exercise, nutrient deficiencies, and health conditions that affect the nervous system.
Carpal tunnel syndrome causes tingling, burning, itching, or numbness in the hand, when the median nerve of the wrist becomes compressed. Health Home Treatments, Tests and Therapies.
About the procedure EMG Before the procedure: Your doctor will explain the procedure to you and offer you the opportunity to ask any questions that you might have about the procedure. Generally, fasting is not required before the test. In some cases, cigarettes and caffeinated beverages, such as coffee, tea, and cola may be restricted two to three hours before testing.
Notify your doctor of all medications prescribed and over-the-counter and herbal supplements that you are taking. Notify your doctor if you have a pacemaker. Dress in clothes that permit access to the area to be tested or that are easily removed.
Stop using lotions or oils on your skin for a few days before your procedure, or at least stop using them on the day of the exam. Based on your medical condition, your doctor may request otherspecific preparation. During the procedure: An EMG procedure may be performed on an outpatient basis or as part of your stay in a hospital. Generally, an EMG procedure follows this process: You will be asked to remove any clothing, jewelry, hairpins, eyeglasses, hearing aids, or other metal objects that may interfere with the procedure.
If you are asked to remove clothing, you will be given a gown to wear. A neurologist will locate the muscle s to be studied. The skin will be cleansed with an antiseptic solution.
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