Tags

Type your tag names separated by a space and hit enter

[Electromyography using needle electrodes to analyze the structure and functional state of motor units in neuromuscular diseases].

Abstract

Results of electromyographic examinations of over 1,000 patients with various forms of acute and chronic neuromuscular diseases and progressing myodystrophies are analyzed. The examinations were carried out with the use of needle electrodes. On comparing the electromyographic findings with the clinical ones and with the results of examining muscle biopsy specimens 5 electromyographic stages of motor unit changes occurring in the course of the development and compensation of the pathological process were differentiated. Stage I was characterized by a shortening of the duration of the activity potentials in some motor units, with the average duration of the motor unit activity potentials remaining unchanged. In Stage II the average duration of the motor unit activity potentials, due to a considerable shortening of most of them, diminishes by more than 20%. In Stage III, along with the short-duration potentials there appear much longer potentials with a duration exceeding the normal ones. Characteristic for Stages IV and V was prevalence of long motor unit activity potentials the average duration of which was by 20 to 40% greater than that of the normal ones. Data characterizing the degree of the spontaneous activity of muscular fibres (potentials of fibrillations and positive acute waves), as well as the spontaneous activity of the motor units (fasciculations) in various stages of their impairment are presented. The importance of evaluating the motor unit activity potentials and the spontaneous activity of the muscular fibres for diagnosing and studying the mechanisms of the development of neuromuscular diseases is discussed.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

rus

PubMed ID

7415703

Citation

Gekht, B M., et al. "[Electromyography Using Needle Electrodes to Analyze the Structure and Functional State of Motor Units in Neuromuscular Diseases]." Zhurnal Nevropatologii I Psikhiatrii Imeni S.S. Korsakova (Moscow, Russia : 1952), vol. 80, no. 6, 1980, pp. 822-9.
Gekht BM, Kasatkina LF, Kevish AV. [Electromyography using needle electrodes to analyze the structure and functional state of motor units in neuromuscular diseases]. Zh Nevropatol Psikhiatr Im S S Korsakova. 1980;80(6):822-9.
Gekht, B. M., Kasatkina, L. F., & Kevish, A. V. (1980). [Electromyography using needle electrodes to analyze the structure and functional state of motor units in neuromuscular diseases]. Zhurnal Nevropatologii I Psikhiatrii Imeni S.S. Korsakova (Moscow, Russia : 1952), 80(6), 822-9.
Gekht BM, Kasatkina LF, Kevish AV. [Electromyography Using Needle Electrodes to Analyze the Structure and Functional State of Motor Units in Neuromuscular Diseases]. Zh Nevropatol Psikhiatr Im S S Korsakova. 1980;80(6):822-9. PubMed PMID: 7415703.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Electromyography using needle electrodes to analyze the structure and functional state of motor units in neuromuscular diseases]. AU - Gekht,B M, AU - Kasatkina,L F, AU - Kevish,A V, PY - 1980/1/1/pubmed PY - 1980/1/1/medline PY - 1980/1/1/entrez SP - 822 EP - 9 JF - Zhurnal nevropatologii i psikhiatrii imeni S.S. Korsakova (Moscow, Russia : 1952) JO - Zh Nevropatol Psikhiatr Im S S Korsakova VL - 80 IS - 6 N2 - Results of electromyographic examinations of over 1,000 patients with various forms of acute and chronic neuromuscular diseases and progressing myodystrophies are analyzed. The examinations were carried out with the use of needle electrodes. On comparing the electromyographic findings with the clinical ones and with the results of examining muscle biopsy specimens 5 electromyographic stages of motor unit changes occurring in the course of the development and compensation of the pathological process were differentiated. Stage I was characterized by a shortening of the duration of the activity potentials in some motor units, with the average duration of the motor unit activity potentials remaining unchanged. In Stage II the average duration of the motor unit activity potentials, due to a considerable shortening of most of them, diminishes by more than 20%. In Stage III, along with the short-duration potentials there appear much longer potentials with a duration exceeding the normal ones. Characteristic for Stages IV and V was prevalence of long motor unit activity potentials the average duration of which was by 20 to 40% greater than that of the normal ones. Data characterizing the degree of the spontaneous activity of muscular fibres (potentials of fibrillations and positive acute waves), as well as the spontaneous activity of the motor units (fasciculations) in various stages of their impairment are presented. The importance of evaluating the motor unit activity potentials and the spontaneous activity of the muscular fibres for diagnosing and studying the mechanisms of the development of neuromuscular diseases is discussed. SN - 0044-4588 UR - https://www.unboundmedicine.com/medline/citation/7415703/[Electromyography_using_needle_electrodes_to_analyze_the_structure_and_functional_state_of_motor_units_in_neuromuscular_diseases]_ L2 - https://medlineplus.gov/neuromusculardisorders.html DB - PRIME DP - Unbound Medicine ER -