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Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm

Hemifacial spasm (HFS) is a rare disorder characterized by involuntary facial muscle contractions. The primary cause is mechanical compression of the facial nerve by nearby structures. Lateral spread response (LSR) is an abnormal muscle response observed during electromyogram (EMG) testing and is as...

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Autores principales: Cho, Kyung Rae, Park, Sang Ku, Park, Kwan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532564/
https://www.ncbi.nlm.nih.gov/pubmed/37763229
http://dx.doi.org/10.3390/life13091825
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author Cho, Kyung Rae
Park, Sang Ku
Park, Kwan
author_facet Cho, Kyung Rae
Park, Sang Ku
Park, Kwan
author_sort Cho, Kyung Rae
collection PubMed
description Hemifacial spasm (HFS) is a rare disorder characterized by involuntary facial muscle contractions. The primary cause is mechanical compression of the facial nerve by nearby structures. Lateral spread response (LSR) is an abnormal muscle response observed during electromyogram (EMG) testing and is associated with HFS. Intraoperative monitoring of LSR is crucial during surgery to confirm successful decompression. Proper anesthesia and electrode positioning are important for accurate LSR monitoring. Stimulation parameters should be carefully adjusted to avoid artifacts. The disappearance of LSR during surgery is associated with short-term outcomes, but its persistence does not necessarily indicate poor long-term outcomes. LSR monitoring has both positive and negative prognostic value, and its predictive ability varies across studies. Early disappearance of LSR can occur before decompression and may indicate better clinical outcomes. Further research is needed to fully understand the implications of LSR monitoring in HFS surgery.
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spelling pubmed-105325642023-09-28 Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm Cho, Kyung Rae Park, Sang Ku Park, Kwan Life (Basel) Review Hemifacial spasm (HFS) is a rare disorder characterized by involuntary facial muscle contractions. The primary cause is mechanical compression of the facial nerve by nearby structures. Lateral spread response (LSR) is an abnormal muscle response observed during electromyogram (EMG) testing and is associated with HFS. Intraoperative monitoring of LSR is crucial during surgery to confirm successful decompression. Proper anesthesia and electrode positioning are important for accurate LSR monitoring. Stimulation parameters should be carefully adjusted to avoid artifacts. The disappearance of LSR during surgery is associated with short-term outcomes, but its persistence does not necessarily indicate poor long-term outcomes. LSR monitoring has both positive and negative prognostic value, and its predictive ability varies across studies. Early disappearance of LSR can occur before decompression and may indicate better clinical outcomes. Further research is needed to fully understand the implications of LSR monitoring in HFS surgery. MDPI 2023-08-29 /pmc/articles/PMC10532564/ /pubmed/37763229 http://dx.doi.org/10.3390/life13091825 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Cho, Kyung Rae
Park, Sang Ku
Park, Kwan
Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title_full Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title_fullStr Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title_full_unstemmed Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title_short Lateral Spread Response: Unveiling the Smoking Gun for Cured Hemifacial Spasm
title_sort lateral spread response: unveiling the smoking gun for cured hemifacial spasm
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532564/
https://www.ncbi.nlm.nih.gov/pubmed/37763229
http://dx.doi.org/10.3390/life13091825
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