{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T14:17:23Z","timestamp":1787840243237,"version":"build-2784847793"},"reference-count":32,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>After the stroke, the development of the second motor neuron degeneration can reduce muscle strength and functional capacity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The aim of this study was to describe the electro-myographic findings in the acute phase of stroke and to correlate them with the severity and muscle strength.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods:<\/jats:title>\n                    <jats:p>Twenty patients were studied in the first 72 hours after stroke. The severity of the lesion was assessed using the National Institutes of Health Stroke Scale (NIHSS), and muscle strength was assessed using the Medical Research Council Scale (MRC). Sensory conduction and motor conduction were studied to exclude peripheral polyneuropathy, radiculopathies, or other neuro-muscular diseases, and electro-myography (EMG) was performed with co-axial needle electrodes in the deltoid, carpal radial extensor, vastus lateralis, and anterior tibialis at rest, slight effort and maximum effort. The associations between qualitative and quantitative variables were studied using the Chi-square test and Fisher's exact test.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Among the patients, 40% had abnormal EMG [positive sharp waves (PSWs), fibrillation, fasciculations, and abnormal patterns in maximum effort]. Positive correlations were found between NIHSS and PSW (p = 0.005; r = 0.65) and abnormal EMG (p = 0.017; r = 0.72), and negative correlations were found between MRC and PSW (p = 0.041; r = -0.83) and abnormal EMG (p = 0.027; r = -0.81).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>It was concluded that the main EMG findings in the acute phase of stroke were the presence of the denervation process and polyphasic motor unit potentials. These changes in EMG were correlated with stroke severity and lower muscle strength.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/0028-3886.349656","type":"journal-article","created":{"date-parts":[[2023,8,24]],"date-time":"2023-08-24T03:55:57Z","timestamp":1692849357000},"page":"1170-1175","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":1,"title":["Needle Electromyography in the Acute Phase of Stroke"],"prefix":"10.4103","volume":"70","author":[{"given":"Ana Carolina","family":"Silva Bitencourt","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thiago Dias","family":"Fernandes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rodrigo","family":"Bazan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gustavo Jos\u00e9","family":"Luvizutto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"R1-54-20241013","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1161\/CIR.0b013e318282ab8f","article-title":"Executive summary: Heart disease and stroke statistics--2013 update: A report from the American Heart Association","volume":"127","author":"Go","year":"2013","journal-title":"Circulation"},{"key":"R2-54-20241013","doi-asserted-by":"crossref","first-page":"1326","DOI":"10.1016\/j.jstrokecerebrovasdis.2017.12.021","article-title":"Effects of early mobilization after acute stroke: A meta-analysis of randomized control trials","volume":"27","author":"Li","year":"2018","journal-title":"J Stroke Cerebrovasc Dis"},{"key":"R3-54-20241013","doi-asserted-by":"crossref","first-page":"14","DOI":"10.2340\/16501977-0018","article-title":"Muscle strength and muscle training after stroke","volume":"39","author":"Bohannon","year":"2007","journal-title":"J Rehabil Med"},{"key":"R4-54-20241013","first-page":"528","article-title":"Diagnosis of acute stroke","volume":"91","author":"Yew","year":"2015","journal-title":"Am Fam Physician"},{"key":"R5-54-20241013","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1016\/j.jstrokecerebrovasdis.2012.03.011","article-title":"Stroke size correlates with functional outcome on the simplified modified Rankin Scale questionnaire","volume":"22","author":"Bruno","year":"2013","journal-title":"J Stroke Cerebrovasc Dis"},{"key":"R6-54-20241013","doi-asserted-by":"crossref","first-page":"e46","DOI":"10.1161\/STR.0000000000000158","article-title":"Guidelines for the early management of patients with acute ischemic stroke: A Guideline for Healthcare Professionals from the American Heart Association\/American Stroke Association","volume":"49","author":"Powers","year":"2018","journal-title":"Stroke"},{"key":"R7-54-20241013","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1161\/01.STR.32.1.47","article-title":"Bone mineral density in acute stroke patients: Low bone mineral density may predict first stroke in women","volume":"32","author":"J\u00f8rgensen","year":"2001","journal-title":"Stroke"},{"key":"R8-54-20241013","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1053\/apmr.2001.22338","article-title":"Myoelectric manifestations of muscle changes in stroke patients","volume":"82","author":"Toffola","year":"2001","journal-title":"Arch Phys Med Rehabil"},{"key":"R9-54-20241013","doi-asserted-by":"crossref","first-page":"515","DOI":"10.1093\/brain\/121.3.515","article-title":"Relationships between timing of muscle excitation and impaired motor performance during cyclical lower extremity movement in post-stroke hemiplegia","volume":"121","author":"Kautz","year":"1998","journal-title":"Brain"},{"key":"R10-54-20241013","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1111\/j.1475-097X.2008.00802.x","article-title":"Intrinsic muscle strength and voluntary activation of both lower limbs and functional performance after stroke","volume":"28","author":"Horstman","year":"2008","journal-title":"Clin Physiol Funct Imaging"},{"key":"R11-54-20241013","doi-asserted-by":"crossref","first-page":"e1761","DOI":"10.1002\/pri.1761","article-title":"Use of electromyographic signals for characterization of voluntary coughing in humans with and without spinal cord injury-A systematic review","volume":"24","author":"Macedo","year":"2019","journal-title":"Physiother Res Int"},{"key":"R12-54-20241013","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/S0891-8422(23)00370-1","article-title":"Clinical electromyography. 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