scholarly journals Latencies longer than 3.5 ms after vagus nerve stimulation does not exclude a nonrecurrent inferior laryngeal nerve

BMC Surgery ◽  
2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Michael Brauckhoff ◽  
Helle Naterstad ◽  
Katrin Brauckhoff ◽  
Martin Biermann ◽  
Turid Aas
Keyword(s):  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Vagus Nerve Stimulation ◽  
Laryngeal Nerve ◽  
Inferior Laryngeal Nerve ◽  
Nonrecurrent Inferior Laryngeal Nerve

Latencies Shorter than 3.5 ms After Vagus Nerve Stimulation Signify a Nonrecurrent Inferior Laryngeal Nerve Before Dissection

2011 ◽  
Vol 253 (6) ◽  
pp. 1172-1177 ◽  
Author(s):  
Michael Brauckhoff ◽  
Andreas Machens ◽  
Carsten Sekulla ◽  
Kerstin Lorenz ◽  
Henning Dralle
Keyword(s):  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Vagus Nerve Stimulation ◽  
Laryngeal Nerve ◽  
Inferior Laryngeal Nerve ◽  
Nonrecurrent Inferior Laryngeal Nerve

Continuous intraoperative vagus nerve stimulation for identification of imminent recurrent laryngeal nerve injury

Head & Neck ◽  
2012 ◽  
Vol 35 (11) ◽  
pp. 1591-1598 ◽  
Author(s):  
Rick Schneider ◽  
Gregory W. Randolph ◽  
Carsten Sekulla ◽  
Eimear Phelan ◽  
Phuong Nguyen Thanh ◽  
...  
Keyword(s):  
Vagus Nerve ◽  
Recurrent Laryngeal Nerve ◽  
Nerve Injury ◽  
Nerve Stimulation ◽  
Vagus Nerve Stimulation ◽  
Recurrent Laryngeal Nerve Injury ◽  
Laryngeal Nerve ◽  
Laryngeal Nerve Injury

scholarly journals The Nonrecurrent Laryngeal Nerve Without Abnormal Subclavian Artery: Report of Two Cases and Review of the Literature

2021 ◽  
pp. 014556132110565
Author(s):  
Ying Lu ◽  
ChengHui Deng ◽  
Ning Lan ◽  
PinXiu Wang ◽  
HuaZe Xi ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Vagus Nerve ◽  
Subclavian Artery ◽  
Thyroid Surgery ◽  
Laryngeal Nerve ◽  
Inferior Laryngeal Nerve ◽  
Review Of The Literature ◽  
Nonrecurrent Inferior Laryngeal Nerve ◽  
Nonrecurrent Laryngeal Nerve ◽  
Neural Monitoring

As a variant of recurrent inferior laryngeal nerve (RILN), the nonrecurrent inferior laryngeal nerve (NRILN) is closely related to the occurrence of abnormal subclavian artery (ASA). The nonrecurrent inferior laryngeal nerve has been found in patients without arterial abnormalities, which is seen in the coexistence of NRILN and RILN, but it is easily confused with sympathetic-inferior laryngeal anastomosis branch (SILAB). We encountered 2 right NRILN patients without ASA during thyroid surgery. This article summarizes the characteristics of these cases and proposes methods to distinguish the coexistence of NRILN and RILN from SILAB. So far, 11 articles have reported 16 cases of NRILN without arterial abnormalities. In patients without artery abnormality, the vagus nerve could send out a descending branch NRILN at the bifurcation of the carotid artery and enter the larynx after anastomosis with RILN. Adequate dissection of the carotid sheath may avoid confusion with SILAB, and neural monitoring is also expected to provide a reference for the identification.

scholarly journals Non-invasive, Spatiotemporal Characterization of Muscle Activation Patterns from Vagus Nerve Stimulation in Human Subjects

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Maria Feucht ◽  
Matthew Ward
Keyword(s):  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Treatment Efficacy ◽  
Vagus Nerve Stimulation ◽  
Muscle Activation ◽  
Laryngeal Nerve ◽  
Activation Patterns ◽  
Inflammatory Disorders ◽  
Muscle Activation Patterns ◽  
Custom Made

Background and Hypothesis: Vagus nerve stimulation (VNS) is used for treatment of epilepsy in over 100,000 patients worldwide and is a potential treatment for many inflammatory disorders. VNS-evoked compound nerve action potentials (CNAPs) may have applications as a biomarker of VNS treatment efficacy, but transcutaneous measurement of this activity is obscured by muscle artifacts. A more precise understanding of muscle activation patterns could improve recording and analysis protocols for isolating the vagus nerve (VN) CNAP. We hypothesize that analyzing multi-electrode array (MEA) surface recordings overlying the VN will allow us to characterize this muscle artifact.  Project Methods: Five patients undergoing VNS therapy for epilepsy were enrolled in a clinical study at Indiana University School of Medicine (IRB #2006075899). A custom-made MEA with a grid of 32 soft foam electrodes was placed on the skin overlying the VN on each side of the neck. Surface potentials were recorded for approximately 20 minutes at the patient’s established device settings. Results: VNS-evoked potentials were visualized in all five patients. Two probable muscle artifacts were identified, defined as non-propagating features in the mean response to n > 600 pulses of VNS. The first had an onset latency of ~1-3 ms, and the second had a latency of ~7-10 ms. Both artifacts appeared primarily in the electrodes overlying the laryngeal muscles. Conclusion and Potential Impact: The short latency of the first muscle artifact suggests stimulus signal leakage activating the superior laryngeal nerve. The second artifact with longer latency is likely caused by the recurrent laryngeal nerve. Previous analyses may have mischaracterized the first muscle artifact as nerve activity. The use of MEA-based recordings clarifies our understanding of the VN’s response to VNS, which may lead to better treatment efficacy and the eventual development of personalized VNS therapies for epilepsy and a range of inflammatory disorders.

scholarly journals Two Cases of Nonrecurrent Inferior Laryngeal Nerve －Different Branching Levels from Vagus Nerve－

2005 ◽  
Vol 27 (1) ◽  
pp. 89-95
Author(s):  
Tetsumi KONISHI ◽  
Asami FUKUSHIMA ◽  
Shu WATANABE ◽  
Kentaro MATSUMOTO ◽  
Koji KADOWAKI ◽  
...  
Keyword(s):  
Vagus Nerve ◽  
Laryngeal Nerve ◽  
Inferior Laryngeal Nerve ◽  
Nonrecurrent Inferior Laryngeal Nerve

Effect of Transcutaneous Vagus Nerve Stimulation in Dysphagia After Lateral Medullary Infarction: A Case Report

2019 ◽  
Vol 28 (4) ◽  
pp. 1381-1387
Author(s):  
Ying Yuan ◽  
Jie Wang ◽  
Dongyu Wu ◽  
Dahua Zhang ◽  
Weiqun Song
Keyword(s):  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Vagus Nerve Stimulation ◽  
Rating Scale ◽  
Tube Feeding ◽  
Nasogastric Feeding ◽  
Lateral Medullary Infarction ◽  
Severe Dysphagia ◽  
Transcutaneous Vagus Nerve Stimulation ◽  
Medullary Infarction

Purpose Severe dysphagia with weak pharyngeal peristalsis after dorsal lateral medullary infarction (LMI) requires long-term tube feeding. However, no study is currently available on therapeutic effectiveness in severe dysphagia caused by nuclear damage of vagus nerve after dorsal LMI. The purpose of the present investigation was to explore the potential of transcutaneous vagus nerve stimulation (tVNS) to improve severe dysphagia with weak pharyngeal peristalsis after dorsal LMI. Method We assessed the efficacy of 6-week tVNS in a 28-year-old woman presented with persisting severe dysphagia after dorsal LMI who had been on nasogastric feeding for 6 months. tVNS was applied for 20 min twice a day, 5 days a week, for 6 weeks. The outcome measures included saliva spitted, Swallow Function Scoring System, Functional Oral Intake Scale, Clinical Assessment of Dysphagia With Wallenberg Syndrome, Yale Pharyngeal Residue Severity Rating Scale, and upper esophagus X-ray examination. Results After tVNS, the patient was advanced to a full oral diet without head rotation or spitting. No saliva residue was found in the valleculae and pyriform sinuses. Contrast medium freely passed through the upper esophageal sphincter. Conclusion Our findings suggest that tVNS might provide a useful means for recovery of severe dysphagia with weak pharyngeal peristalsis after dorsal LMI. Supplemental Material https://doi.org/10.23641/asha.9755438

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