{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T16:54:38Z","timestamp":1789232078667,"version":"build-2803163510"},"reference-count":7,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2014,9,24]],"date-time":"2014-09-24T00:00:00Z","timestamp":1411516800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Muscle and Nerve"],"published-print":{"date-parts":[[2014,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p><jats:italic>Introduction<\/jats:italic>: Small\u2010amplitude, short\u2010duration motor unit action potentials are non\u2010specific findings seen in myopathies and neuromuscular junction (NMJ) disorders. NMJ studies (repetitive nerve stimulation and single\u2010fiber electromyography) can determine if such findings are related to NMJ abnormalities but are not considered routinely in atypical cases. <jats:italic>Methods<\/jats:italic>: Medical records of 338 patients with confirmed NMJ disorders were reviewed to identify cases with a clinical or electrodiagnostic impression of myopathy during initial evaluation. A history of muscle biopsy with findings that did not support a myopathic process was required for inclusion. <jats:italic>Results<\/jats:italic>: Four patients met the inclusion criteria. NMJ studies were abnormal in all cases. One patient had elevated acetylcholine receptor antibodies. Three patients were antibody negative: 2 demonstrated immunotherapy responsiveness, and 1 had a Rapsyn mutation. <jats:italic>Conclusions<\/jats:italic>: NMJ disorders may mimic myopathies, and NMJ studies should be performed to clarify so\u2010called \u201cmyopathic\u201d electromyographic findings to avoid unnecessary testing and delayed diagnosis. <jats:italic>Muscle Nerve<\/jats:italic> <jats:bold>50<\/jats:bold>: 854\u2013856, 2014<\/jats:p>","DOI":"10.1002\/mus.24300","type":"journal-article","created":{"date-parts":[[2014,5,27]],"date-time":"2014-05-27T06:24:42Z","timestamp":1401171882000},"page":"854-856","source":"Crossref","is-referenced-by-count":22,"title":["Neuromuscular junction disorders mimicking myopathy"],"prefix":"10.1002","volume":"50","author":[{"given":"Phillip C.","family":"Mongiovi","sequence":"first","affiliation":[{"name":"The Ohio State University College of Medicine Columbus Ohio USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bakri","family":"Elsheikh","sequence":"additional","affiliation":[{"name":"Division of Neuromuscular Disorders, Department of Neurology Wexner Medical Center, The Ohio State University 395 West 12th Avenue Columbus Ohio 43210 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victoria H.","family":"Lawson","sequence":"additional","affiliation":[{"name":"Division of Neuromuscular Disorders, Department of Neurology Wexner Medical Center, The Ohio State University 395 West 12th Avenue Columbus Ohio 43210 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John T.","family":"Kissel","sequence":"additional","affiliation":[{"name":"Division of Neuromuscular Disorders, Department of Neurology Wexner Medical Center, The Ohio State University 395 West 12th Avenue Columbus Ohio 43210 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W. David","family":"Arnold","sequence":"additional","affiliation":[{"name":"Division of Neuromuscular Disorders, Department of Neurology Wexner Medical Center, The Ohio State University 395 West 12th Avenue Columbus Ohio 43210 USA"},{"name":"Department of Physical Medicine and Rehabilitation Wexner Medical Center, The Ohio State University Columbus Ohio USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,9,24]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.58.8.1253"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jneuroim.2008.06.026"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.1979.00500430036004"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/mus.880171003"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.25.2.173"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.28.7.623"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.73.6.766"}],"container-title":["Muscle &amp; Nerve"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmus.24300","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmus.24300","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/mus.24300","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,4]],"date-time":"2023-10-04T07:32:58Z","timestamp":1696404778000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/mus.24300"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,9,24]]},"references-count":7,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2014,11]]}},"alternative-id":["10.1002\/mus.24300"],"URL":"https:\/\/doi.org\/10.1002\/mus.24300","archive":["Portico"],"relation":{},"ISSN":["0148-639X","1097-4598"],"issn-type":[{"value":"0148-639X","type":"print"},{"value":"1097-4598","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,9,24]]}}}