• Title/Summary/Keyword: Electromyography

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Basic concepts of needle electromyography

  • Kim, Jee-Eun;Seok, Jin Myoung;Ahn, Suk-Won;Yoon, Byung-Nam;Lim, Young-Min;Kim, Kwang-Kuk;Kwon, Ki-Han;Park, Kee Duk;Suh, Bum Chun;Korean Society of Clinical Neurophysiology Education Committee
    • Annals of Clinical Neurophysiology
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    • v.21 no.1
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    • pp.7-15
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    • 2019
  • Clinical evaluations, nerve conduction studies, and electromyography play major complementary roles in electrophysiologic diagnoses. Electromyography can be used to assess pathologic changes and localize lesions occurring in locations ranging from motor units to anterior-horn cells. Successfully performing electromyography requires knowledge of the anatomy, physiology, and pathology of the peripheral nervous system as well as sufficient skill and interpretation ability. Electromyography techniques include acquiring data from visual/auditory signals and performing needle positioning, semiquantitation, and interpretation. Here we introduce the basic concepts of electromyography to guide clinicians in performing electromyography appropriately.

Clinical Application of Electromyography and Nerve Conduction Study (근전도와 신경전도 검사의 임상적 응용)

  • Kim Ho-Bong;Park Young-Han;Bae Sung-Soo
    • The Journal of Korean Physical Therapy
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    • v.10 no.1
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    • pp.199-212
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    • 1998
  • The purpose of this article is to summary about the application of electromyography and nerve conduction study. Electrodiagnostic studies, which include nerve conduction studies, electromyography, repetitive nerve stimulation, single fiber EMG, late response tests and evoked potential tests are a critical component of the neuromuscular evaluation.

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A Case of Pneumothorax after Needle Electromyography of Cervical Paraspinal Muscles (경추부 척추옆근육의 침근전도 검사 후 발생한 기흉 1예)

  • Lee, Jee-Young;Hong, Yoon Ho
    • Annals of Clinical Neurophysiology
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    • v.8 no.1
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    • pp.88-90
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    • 2006
  • Pneumothorax after needle electromyography is a rare complication, which usually associated with examination of diaphragmatic and intercostal muscles. However, by the literatures, it can also occur with supraspinatus, serratus anterior and paraspinal muscles. We experienced a case of pneumothorax after cervical paraspinal muscle needle electromyography. From the anatomical vulnerability of pneumothorax during needle insertion, we emphasized the importance of avoiding this complication.

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Clinical Application of Electromyography and Nerve Conduction Study (근전도와 신경전도 검사의 임상적 응용)

  • Kim, Ho-Bong;Bae, Sung-Soo
    • Journal of Korean Physical Therapy Science
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    • v.5 no.2
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    • pp.603-616
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    • 1998
  • The purpose of this article is to summary about the application of electromyography and nerve conduction study. Electrodiagnostic studies, which include nerve conduction studies, electromyography, repetitive nerve stimulation, single fiber EMG, late response tests and evoked potential tests are a critical component of the neuromuscular evaluation.

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A Study of Correlation between Electromyography(EMG) and the Heart Rate Variability(HRV) Test, and Their Role as Predicting Factors for Peripheral Facial Palsy Prognosis (말초성 안면신경마비 환자에서 EMG(Electromyography)와 HRV(Heart Rate Variability)의 임상적 예후인자로서의 유용성 및 상관성 연구)

  • Kim, Chan-Young;Kim, Jong-In;Lee, Sang-Hoon;Park, Dong-Suk;Koh, Hyung-Kyun
    • Journal of Acupuncture Research
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    • v.25 no.2
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    • pp.189-197
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    • 2008
  • Objectives : This study was performed in order to investigate the effectiveness of electromyography and the Heart Rate Variability(HRV) test as prognosis factors, and to clarify correlation between Electromyography and the Heart Rate Variability test. Methods : 44 Bell's palsy patients who were graded V on the House-Brackmann scale and underwent HRV and EMG testing were retrospectively reviewed based on medical records. Results from both tests were analyzed via simple linear regression, and bivariate correlation analysis was performed to investigate the correlation between results from the two tests. The severity of the facial palsy at onset and at 2 weeks after treatment were evaluated with the H-B grade and Yanagihara grading system, and was converted into improvement scores. Results : Mean axonal loss according to electromyography showed a statistically significant correlation in predicting peripheral facial palsy improvement(p<0.01). HR, SDNN, TP, LF, HF, VLF, and LF/HF ratio on the Heart Rate Variability test showed no significant correlation in predicting peripheral facial palsy improvement. Mean axonal loss determined by electromyography, and HR, SDNN, TP, LF, HF, VLF, and LF/HF ratio recorded with the Heart Rate Variability test was analyzed with the bivariate correlation analysis method. Mean axonal loss and SDNN showed a statistically significant correlation(p<0.01) Conclusions : The Heart Rate Variability test has no statistical significance in predicting peripheral facial palsy improvement. SDNN has a statistically significant correlation with mean axonal loss as determined by electromyography.

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A Review of Studies Comparing of Surface Electromyography Values between the Low-back Pain Group and Healthy Controls (요통환자군과 정상대조군 사이의 표면근전도값 비교에 관한 연구문헌 고찰)

  • Yoo, Duk-Joo;Cho, Jae-Heung;Chung, Seok-Hee
    • Journal of Korean Medicine Rehabilitation
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    • v.23 no.4
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    • pp.83-93
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    • 2013
  • Objectives To present reviews of studies comparing surface-electromyography (SEMG) values between low back pain group and control group. Methods We searched 8 databases including KoreaMed, Google, KISS (Korean studies Information Service System), RISS (Research Information Sharing Service), OASIS (Oriental medicine Advanced Searching Integrated System), Pubmed, Ovid-MEDLINE and EMBASE. After searching, we conducted study selection by using inclusion and exclusion criteria and quality-assessment. We reviewed the selected studies concerning about the subject's measuring position, findings, sensitivities and specificities. Results 27 Studies were searched and reviewed. In static surface electromyography, more muscle activities observed in low back pain subjects than in controls. In dynamic surface electromyography, the low back pain subjects showed more muscle activites during flexion, while the control group showed more muscle activities during extension. Faster muscle fatigue observed in isometric muscle analysis. Conclusions Surface electromyography values will be able to be objective marker for evaluating low back pain. Further research is needed to determine additional unified protocol such as the type of SEMG and its directions.

Study on the Reliability of Electromygraphic Examine according to the Measurement Timing in a Day (근전도 측정시 검사시간에 따른 신뢰도 연구)

  • Woo-Cheon Kee;Byung-Guk Kim;Sook-Hee Choi
    • Journal of Oral Medicine and Pain
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    • v.14 no.1
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    • pp.19-24
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    • 1989
  • The purpose of this study was to investigate the reliability of electromyographic examination in a day and detect the objective measurement timing of electromyography. 18 normal students who were in dental collage of C national university were selected for this study. They had no symptoms on temporomandibular joint area, no restorations and missing tooth on dentition. Their molar relationship was normal or class I of Angle's classification. Electromyography had been taken every one hour from 9:00 A.M. to 5:00 P.M. in the state of clenching and rest by using Bioelectric processor EM2 interfaced with mandibular kinesiograph K-6 diagnostic system. We compared and analyzed the variances of electromyography values of each subjects. The obtained results were as follows : There were no significant differences on variability of electromyography values in each state clenching and rest. In the aspect of this circumstances, the use of electromyography could be a good objective procedure to diagnose the temporomandibular disorders and to detect the effect to the treatment of temporomandibular disorders at any time in a day from 9:00 A.M. to 5:00 P.M.

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