ACTA FAC MED NAISS 2009; 26 (1): 3-9

 

Review article

 

ELECTRONEUROGRAPHICAL FINDINGS IN PATIENTS WITH ESSENTIAL TREMOR

 

 

Zoran Perić1,2

Vojislav Cvetković3

Irina Stojanović2

 

1Department of  Neurology, Faculty of Medicine University of Niš

2Clinic for Mental Health Protection, Clinical Centre Niš

3Dispensary for Railroad Employee Health Protection Niš

 

  SUMMARY

 

The aim of the paper was to consider the characteristics of electroneurographical finding in patients with essential tremor and to compare them with the findings of healthy subjects. We analysed 34 patients with essential tremor, 18 females and 16 males, mean age 47.3 (X±SD=47.3±8.9) years; the values of nervus medianus and nervus peroneus motor and sensory conduction velocities (in m/s) were deter mined as well as the values od NM and NP M-potential amplitude (in mV) registered with surface electrode over opponens pollicis and extensor digitorum brevis muscles, respectively. The control group (CG) consisted of 34 agematched healthy subjects.The Student t-test was used for statistical analysis. In patients with essential tremor we registered statistically significantly (p<0.01) lower nervus peroneus M-potential amplitude values (6.7±1.4 mV) compared to CG (8.9±1.7 mV). Other electroneurographical parameter values were not statistically different (p>0 05) in patients with essential tremor and subjects in the control group. Essential tremor may have influence on some electroneurographical parameter values, but most of the electroneurographical parameter values in patients with essential tremor are within normal ranges. Reduction of nervus peroneus M-potential amplitude value in patients with essenetial tremor may be associated with chronic muscle fatique and/or change of motor units function during tremorand other factors.

 

Key words: essential tremor, electroneurographical finding