Single-fibre electromyography SFEMG at different firing rates in myasthenia with and without thymoma

• Authors: Barbara Emeryk-Szajewska , Katarzyna Rowinska , Teresa Michalska , Halina Strugalska
• Languages of publication: EN

Abstracts

EN

The single fibre EMG differences during motor axonal stimulation at different firing rates were studied in myasthenic patients:15 with, and 15 without thymoma. 10 healthy volunteers were also examined. Conventional repetitive stimulation EMG as well as SFEMG during weak voluntary contraction and on 10 and 20Hz stimulation was performed in every patient. The mean jitter in the control group was 30 ?s on voluntary contraction and about 22 ?s at 10 as well as at 20 Hz stimulation. In both groups of myasthenic patients under consideration SFEMG on voluntary contraction detected neuromuscular transmission disturbances of various degree. The results obtained at motor axonal stimulation (10 and 20 Hz) were unhomogeneous. In both groups jitter seemed to be slightly shorter at higher (20 HZ) frequency stimulation, probably due to facilitation but differences were significant.

Keywords

EN

AXONAL STIMULATION; MYASTHENIA GRAVIS; NEUROMUSCULAR TRANSMISSION; SINGLE FIBRE EMG; THYMOMA

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Marceli Nencki Institute of Experimental Biology, Polish Academy of Sciences
• Journal: Acta Neurobiologiae Experimentalis
• Year: 1993
• Volume: 53
• Issue: 1
• Pages: 305-311

Contributors

author

Barbara Emeryk-Szajewska

author

Katarzyna Rowinska

author

Teresa Michalska

author

Halina Strugalska

• Document Type: paper