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ABSTRACT: Unlabelled
Total laryngectomy is a surgical procedure that can change swallowing biomechanics, including muscle activity of the masseter; this muscle stabilizes the mandible.Aim
To characterize the electrical activity of the masseter muscle during swallowing after total laryngectomy. Series study.Material and methods
An electromyographic evaluation of swallowing was carried out; three different volumes of water (14.5 ml, 20 ml and 100 ml) were swallowed, and there was a rest condition. The electromyographic signal was normalized by Maximum Resisted Voluntary Activity - considered as 100% of electrical activity of muscles. All other values were calculated as a percentage of this parameter.Results
There is moderate electrical activity of the masseter during swallowing with higher averages on the left. There was no difference between swallowing 14.5 ml or 20 ml. Natural swallowing of 100ml had the lowest average. Electromyographic signals were recorded at rest on both sides, indicating the existence of electric activity in this situation.Conclusion
Patients submitted to total laryngectomy present electrical activity of the masseter muscles during swallowing and at rest. This activity is influenced by the volume of swallowed liquid, and showed significant differences among the tasks. Clinical Trials: NCT01095289.
SUBMITTER: Pernambuco Lde A
PROVIDER: S-EPMC9443755 | biostudies-literature | 2011 Sep-Oct
REPOSITORIES: biostudies-literature
Pernambuco Leandro de Araújo Lde A Silva Hilton Justino da HJ Nascimento Gerlane Karla Bezerra Oliveira GK Silva Elthon Gomes Fernandes da EG Balata Patrícia Maria Mendes PM Santos Veridiana da Silva Vda S Leão Jair Carneiro JC
Brazilian journal of otorhinolaryngology 20110901 5
<h4>Unlabelled</h4>Total laryngectomy is a surgical procedure that can change swallowing biomechanics, including muscle activity of the masseter; this muscle stabilizes the mandible.<h4>Aim</h4>To characterize the electrical activity of the masseter muscle during swallowing after total laryngectomy. Series study.<h4>Material and methods</h4>An electromyographic evaluation of swallowing was carried out; three different volumes of water (14.5 ml, 20 ml and 100 ml) were swallowed, and there was a r ...[more]