EMG/electromyography/electromyographic examination

It is a supportive diagnostic method used to evaluate various neuromuscular disorders (conditions affecting the function of nerves, muscles, and neuromuscular transmission). EMG examination consists of nerve conduction studies and, in selected cases, needle electrode examination.

Nerve conduction studies are performed by applying small electrical impulses through special electrodes placed on the limbs. By recording the responses, the physician can determine whether there is damage to a peripheral nerve or nerve root (most commonly used to confirm carpal tunnel syndrome and assess the need for surgery), or damage to the peripheral nervous system (frequently seen in diabetic polyneuropathy), as well as nerve injury after trauma.

The application of electrical impulses may be uncomfortable or mildly painful for some patients, and muscle twitching may occur during stimulation.

Needle EMG is a diagnostic method in which a thin needle electrode is inserted into a muscle to record the bioelectrical signals generated by the muscle fibers. This part of the examination may be uncomfortable due to the insertion of the thin needle electrode.

Preparation before the examination:

• Do not apply any cream or other products to your limbs on the morning of the examination (to minimize skin resistance).

• Inform the nurse or physician if you have an implanted pacemaker, cochlear implant, or if you are taking blood‑thinning medication (to assess possible contraindications or the necessary extent of the examination).

• If you tend to faint during blood draws, please let us know as well.

The EMG examination is performed jointly by a nurse and a physician. The findings are evaluated by the physician.