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Development of a nerve conduction technique for the recurrent laryngeal nerve

2014; Wiley; Volume: 124; Issue: 12 Linguagem: Inglês

10.1002/lary.24831

1531-4995

Sang J. Kim, Dae G. Lee, Jeong-Yi Kwon,

Tracheal and airway disorders

The LaryngoscopeVolume 124, Issue 12 p. 2779-2784 Laryngology Development of a nerve conduction technique for the recurrent laryngeal nerve Sang J. Kim MD, PhD, Corresponding Author Sang J. Kim MD, PhD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSend correspondence to Sang Jun Kim, MD, Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Gangnam-Gu, Irwon-ro, 50th, Seoul, South Korea 135-710. E-mail: catedral.sjk@gmail.comSearch for more papers by this authorDae G. Lee MD, Dae G. Lee MD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSearch for more papers by this authorJeong-Yi Kwon MD, PhD, Jeong-Yi Kwon MD, PhD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSearch for more papers by this author Sang J. Kim MD, PhD, Corresponding Author Sang J. Kim MD, PhD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSend correspondence to Sang Jun Kim, MD, Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Gangnam-Gu, Irwon-ro, 50th, Seoul, South Korea 135-710. E-mail: catedral.sjk@gmail.comSearch for more papers by this authorDae G. Lee MD, Dae G. Lee MD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSearch for more papers by this authorJeong-Yi Kwon MD, PhD, Jeong-Yi Kwon MD, PhD Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Seoul, South KoreaSearch for more papers by this author First published: 14 July 2014 https://doi.org/10.1002/lary.24831Citations: 9 This study was supported by a Samsung Medical Center intramural grant (grant no. SMR112041). The authors have no other funding, financial relationships, or conflicts of interest to disclose. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Objectives/Hypothesis To develop a reliable and safe laryngeal nerve conduction technique and to obtain consistent parameters as normal reference values. Study Design A prospective single-arm study. Methods A nerve conduction test was performed on the contralateral normal side in 42 patients with unilateral vocal fold palsy. The recording was performed in the intact thyroarytenoid muscle using a monopolar needle. The electrical stimulation using a 37-mm monopolar needle was applied 3 cm below the lower margin of the cricoid cartilage, just lateral to the trachea and medial to the carotid artery, and its intensity was gradually increased until the amplitude of the electrical response reached the maximum level. The latency of the evoked muscle response was acquired at the first evoked waveform deflection from the baseline. Results The average latency of the recurrent laryngeal nerves was 1.98 ± 0.26 ms. The latencies showed normal distribution according to the quantile-quantile plot and Kolmogorov-Smirnov test (P = .098). There was no significant difference in latencies between the right and left recurrent laryngeal nerves. Anthropometric factors including height and weight did not show any correlation with the latencies. Conclusions We developed a reliable and safe laryngeal nerve conduction technique and obtained normal reference values for the recurrent laryngeal nerve conduction study. This laryngeal nerve conduction study can be an additional tool for detecting recurrent laryngeal nerve injury if it is performed in combination with the conventional laryngeal electromyography. Level of Evidence 4. Laryngoscope, 124:2779–2784, 2014 Citing Literature Supporting Information Additional Supporting Information may be found in the online version of this article. Filename Description lary24831-sup-0001-suppmovie1.mov48.4 MB Supplementary Information Movie 1. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume124, Issue12December 2014Pages 2779-2784 RelatedInformation