{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T00:45:38Z","timestamp":1785804338084,"version":"3.56.0"},"reference-count":0,"publisher":"Georg Thieme Verlag KG","issue":"06","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Neurol Surg B"],"published-print":{"date-parts":[[2019,12]]},"abstract":"<jats:p>\n            Introduction\u2003Facial weakness can result from surgical manipulation of the facial nerve. Intraoperative neuromonitoring reduces functional impairment but no clear guidelines exist regarding interpretation of intraoperative electrophysiological results. Most studies describe subjects with facial nerves encumbered by tumors or those with various grades of facial nerve weakness. We sought to obtain the neurophysiological parameters and stimulation threshold following intraoperative facial nerve triggered electromyography (t-EMG) stimulation during microvascular decompression for trigeminal neuralgia to characterize the response of normal facial nerves via t-EMG.<\/jats:p><jats:p>\n            Methods\u2003Facial nerve t-EMG stimulation was performed in seven patients undergoing microvascular decompression for trigeminal neuralgia. Using constant current stimulation, single stimulation pulses of 0.025 to 0.2\u2009mA intensity were applied to the proximal facial nerve. Compound muscle action potentials, duration to onset, and termination of t-EMG responses were recorded for the orbicularis oculi and mentalis muscles. Patients were evaluated for facial weakness following the surgical procedure.<\/jats:p><jats:p>\n            Results\u2003Quantifiable t-EMG responses were generated in response to all tested stimulation currents of 0.025, 0.05, 0.1, and 0.2\u2009mA in both muscles, indicating effective nerve conduction. No patients developed facial weakness postoperatively.<\/jats:p><jats:p>\n            Conclusions\u2003The presence of t-EMG amplitudes in response to 0.025\u2009mA suggests that facial nerve conduction can take place at lower stimulation intensities than previously reported in patients with tumor burden. Proximal facial nerve stimulation that yields responses with thresholds less than 0.05\u2009mA may be a preferred reference baseline for surgical procedures within the cerebellopontine angle to prevent iatrogenic injury.<\/jats:p>","DOI":"10.1055\/s-0038-1677538","type":"journal-article","created":{"date-parts":[[2019,1,30]],"date-time":"2019-01-30T00:37:45Z","timestamp":1548808665000},"page":"599-603","source":"Crossref","is-referenced-by-count":6,"title":["Estimation of Intraoperative Stimulation Threshold of the Facial Nerve in Patients Undergoing Microvascular Decompression"],"prefix":"10.1055","volume":"80","author":[{"given":"Rafey A.","family":"Feroze","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael M.","family":"McDowell","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey","family":"Balzer","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Donald J.","family":"Crammond","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Partha","family":"Thirumala","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"Jr.","given":"Raymond F.","family":"Sekula","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2019,1,29]]},"container-title":["Journal of Neurological Surgery Part B: Skull Base"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0038-1677538.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,11,20]],"date-time":"2019-11-20T09:27:39Z","timestamp":1574242059000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0038-1677538"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,1,29]]},"references-count":0,"journal-issue":{"issue":"06","published-online":{"date-parts":[[2019,11,19]]},"published-print":{"date-parts":[[2019,12]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0038-1677538","relation":{},"ISSN":["2193-6331","2193-634X"],"issn-type":[{"value":"2193-6331","type":"print"},{"value":"2193-634X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,1,29]]}}}