Evaluation of neuromuscular transmission by using monopolar needle electrode


TUTKAVUL K., Baslo M. B. , ERTAS M., TIRELI H.

ACTA NEUROLOGICA SCANDINAVICA, cilt.114, ss.340-345, 2006 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 114 Konu: 5
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1111/j.1600-0404.2006.00634.x
  • Dergi Adı: ACTA NEUROLOGICA SCANDINAVICA
  • Sayfa Sayıları: ss.340-345

Özet

Objective: To evaluate the value of single-fibre electromyography (SFEMG) with monopolar electrode (MNPE) in revealing neuromuscular transmission dysfunction. Material and methods: We examined the extensor digitorum communis muscle by using single-fibre electrode (SFE) and MNPE sequentially, in randomly assigned 20 healthy volunteers and in 17 patients with known myasthenia gravis (MG). The high-pass filter setting was 3 kHz for MNPE. Ten individual jitter values were calculated for each electrode in every muscle. Repetitive nerve stimulation (RNS) test on trapezius muscle was performed on 15 patients. Results: In controls, the mean jitter values were 27 +/- 9 (10-59) mu s with SFE, and 21 +/- 7.2 (9-56) mu s with MNPE (P = 0.001). In the MG group, the mean jitter values were 52.4 +/- 38 (12-221) mu s with SFE, and 51.8 +/- 34.7 (12-179) mu s with MNPE. Both electrodes identified junction dysfunction in 14 patients. RNS revealed decrement in four patients but 11. Conclusion: SFEMG with SFE is still the gold standard; however, SFEMG with MNPE is superior to RNS like SFEMG with SFE.