Electrophysiological evaluation of efficacy of clipping in thoracic sympathectomy: An experimental cadaveric study.
Clipping
electrophysiology
thoracic sympathectomy
Journal
Turk gogus kalp damar cerrahisi dergisi
ISSN: 1301-5680
Titre abrégé: Turk Gogus Kalp Damar Cerrahisi Derg
Pays: Turkey
ID NLM: 100887967
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
27
01
2020
accepted:
03
03
2020
entrez:
6
1
2021
pubmed:
7
1
2021
medline:
7
1
2021
Statut:
epublish
Résumé
This study aims to examine the efficacy of clipping in thoracic sympathectomy based on electrophysiological evaluation and to investigate whether nerve conduction can be formed by collateral nerve extensions as a result of the clipping procedure to different levels of sympathetic nerve. Newly sacrificed six sheep hemithoraces were studied between August 2016 and October 2016. Thoracic sympathectomy was performed by clipping at T2, T3, T4, and T5 sympathetic chain levels and their branches. Electrophysiological studies were performed with an electromyography device and the filter range was 1 Hz with 20 μV/D amplification. Signals were processed digitally; bipolar subdermal needle electrodes were used as stimulation and recording electrodes (Ø 0.75 mm); and the ground electrode was placed in the intercostal muscle where the thoracic sympathectomy procedure would be performed. Electrophysiological evaluations showed that clips placed on the main sympathetic chain branches and sympathetic nerve trunk prevented collateral impulse conduction and stimulated potentials were not recorded. However, sympathetic conduction continued at the same intensity after removal of the clips. Clipping of different regions of the sympathetic nerve provides electrophysiological blockage of the sympathetic nerve, and conduction continues after removal of the clips. However, the shortand long-term postoperative electrophysiological results after removal of the clips over the sympathetic nerve is still a question mark.
Sections du résumé
BACKGROUND
BACKGROUND
This study aims to examine the efficacy of clipping in thoracic sympathectomy based on electrophysiological evaluation and to investigate whether nerve conduction can be formed by collateral nerve extensions as a result of the clipping procedure to different levels of sympathetic nerve.
METHODS
METHODS
Newly sacrificed six sheep hemithoraces were studied between August 2016 and October 2016. Thoracic sympathectomy was performed by clipping at T2, T3, T4, and T5 sympathetic chain levels and their branches. Electrophysiological studies were performed with an electromyography device and the filter range was 1 Hz with 20 μV/D amplification. Signals were processed digitally; bipolar subdermal needle electrodes were used as stimulation and recording electrodes (Ø 0.75 mm); and the ground electrode was placed in the intercostal muscle where the thoracic sympathectomy procedure would be performed.
RESULTS
RESULTS
Electrophysiological evaluations showed that clips placed on the main sympathetic chain branches and sympathetic nerve trunk prevented collateral impulse conduction and stimulated potentials were not recorded. However, sympathetic conduction continued at the same intensity after removal of the clips.
CONCLUSION
CONCLUSIONS
Clipping of different regions of the sympathetic nerve provides electrophysiological blockage of the sympathetic nerve, and conduction continues after removal of the clips. However, the shortand long-term postoperative electrophysiological results after removal of the clips over the sympathetic nerve is still a question mark.
Identifiants
pubmed: 33403141
doi: 10.5606/tgkdc.dergisi.2020.19412
pmc: PMC7759042
doi:
Types de publication
Journal Article
Langues
eng
Pagination
669-673Informations de copyright
Copyright © 2020, Turkish Society of Cardiovascular Surgery.
Déclaration de conflit d'intérêts
Conflict of Interest: The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.
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