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Neurophysiological examination

Neurophysiological examination

In the nerve conduction test (i.e. elektroneurography, ENG and repetitive nerve stimulation test, RNS), the individual muscles and nerves are stimulated by superfluous direct current (in special cases with needle electrodes), and the response is recorded and analyzed by a machine.

The purpose of the study is to investigate the functioning of the peripheral nervous system.
It is possible to test both the sensory, the motor and the mixed nerves and the nerve-muscle transition.

The examination takes place lying down after removing grease from the surface of the skin. We then place the electrodes and begin pacing with direct current and very low current.
The current is then gradually increased, along the line where the nerve thread runs. The deeper the nerve, the stronger the current can be.

During repetitive nerve stimulation, electric stimulation occurs in a series of sequences. The study is described as a pins and needles sensation, for some patients it is an unpleasant experience.
Please inform the person conducting the examination about any discomfort you may feel during the examination! The examination lasts for half an hour to an hour, depending on the number of nerves to be examined.

Most frequent questions, referral diagnoses:
– Is the nerve squeezed (e.g. wrist joint with carpal tunnel syndrome, cubital tunnel syndrome, etc.)?
– Do you suffer from sensory or motor nerve disease (e.g. diabetes or thyroid disease complications)?
– Are there any diseases of the transition of the nerve-muscle (e.g. Myasthenia gravis)?

The examination does not require any special preparations on the patient’s part, they can eat and take their medicine the usual way.
EXCEPT if you are taking Mestinon or Mytelase pills. You should take them 6 hours prior to the examination the latest, otherwise they may influence the results of the examination.

Please inform the examiner if you have any electrical devices (pacemakers, implantable defibrillators, deep stimulators, dopamine pumps, transcutaneous electrical nerve stimulators) in your body!
When registering at the check-in, you need to provide a written statements regarding the above.
You can download the statements from here (pdf)

EMG_patient information_NOE_2016.09.07

ENG_RNS_patient information_NOE_2016.09.07