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Try not to use lotions on the day of the test. You may resume all normal activity after the test, and have no restrictions for activity prior to the examination.

Also, let them know if you have a pacemaker or any other electrical device. These risks are increased if you take blood thinners or have a bleeding disorder, please inform you physician at the beginning of the consultation if you are on those types of medications or have a bleeding disorder. The physicians take precaution to reduce these risks by cleaning the areas with alcohol and placing pressure over the sites. The risks include bleeding, infection and lung collapse (only if muscles closer to the neck/chest wall are examined with the needle). This is a relatively safe test that poses minimal risks with rare complications. This test does not cause prolonged pain, however if you get home and you are still experiencing soreness, you may try ice on the sites for 20 minutes on then 20 minutes off. The needle portion can also be uncomfortable. The physician may have to do these at multiple locations, some more sensitive than others. The nerve conduction studies involve quick shocks that some describe as static electric shocks when you walk on carpet and touch a door knob. Typically, these tests are performed when a patient complains of the following symptoms:Įveryone responds to these tests differently. The needle acts as a microphone to record sounds produced by muscles at rest and when activated. Needle electromyography (EMG) involves a small needle (the size of an acupuncture needle) in muscles.

These signals are recorded in graph format, and the information provided (speed, size) are compared to normal values. This part of the study involves electrodes that are taped to the patient’s skin to record signals through stimulations (or shocks).

Typically, these studies (combined) can be referred to as “EMG.” Electrodiagnostic studies often include both nerve conduction studies and needle electromyography. Often times, people use the same titles to refer to the same diagnostic study. Are electrodiagnostics (EDX) or nerve conduction studies (NCS) or electromyography (EMG) the same test?