Trust in our first-class neurophysiologists to provide a range of clinical services. Serving clients throughout Yorkshire, we provide services to those with suspected disorders/diseases of the peripheral nerves or muscles. These often include electrical tests which assess their function. Termed nerve conduction studies or electromyography (EMG), the tests are performed by our consultant clinical neurophysiologist.
Our team use nerve conduction studies to assess the electrical conduction of impulses travelling along your nerves. To measure this, a special recording electrode is placed onto your skin (usually on your hand, arm, or leg) and then another electrode is used to stimulate the skin. The stimulator produces small electrical pulses which feel like a sharp tapping sensation. It’s repeated for several different nerves. There are no side effects, although some find it uncomfortable. We usually use this method to examine nerves in your arms or legs. If the nerve is trapped, damaged, or diseased, the signals show differently.
Electromyography (EMG) is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons). Motor neurons transmit electrical signals that cause muscles to contract. An EMG translates these signals into graphs, sounds, or numerical values that a specialist interprets. During a needle EMG, a needle electrode is inserted directly into a muscle. It then records the electrical activity in that muscle.
EMG results reveal nerve dysfunction, muscle dysfunction, or problems with nerve-to-muscle signal transmission.
Your doctor may order an EMG if you have signs or symptoms that may indicate a nerve or muscle disorder. Such symptoms may include:
EMG results are often necessary to help diagnose or rule out several conditions. These include the following:
The doctor specialising in nervous system investigations (Clinical Neurophysiologist) will need to know if you have certain medical conditions. Please bring the list of your medication with you and tell your doctor and other EMG lab personnel if you:
EMG and NCS tests have few side effects. Occasionally, the needle examination causes a small bruise. This is more common in patients on blood thinners or anti-inflammatory drugs (Ibuprofen or Aspirin). Infection at the needle sites is rare, given the skin’s natural defences and the small needle size. You may feel some soreness for a day or two following the test. There are no activity restrictions, and you can drive home afterwards. The tests are safe and can be performed on those with pacemakers or defibrillators.
The consultant Neurophysiologist interpret the results of your test and prepares a report. Your GP, or the doctor who requested the EMG, will discuss the report with you at a follow-up appointment.