Post-Stroke Dysphagia: Evaluating myoelectric alterations in swallowing muscles
Dysphagia is a potentially hazardous under-diagnosed swallowing impairment that still lacks a simple quantitative assessment system. To help solve this issue, this article proposes new surface electromyography (sEMG) biomarkers that characterize its amplitude, timing, spectrum, and complexity. Measu...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Católica de Valencia San Vicente Mártir |
| Repositorio: | RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártir |
| Idioma: | inglés |
| OAI Identifier: | oai:riucv.ucv.es:20.500.12466/7368 |
| Acceso en línea: | https://hdl.handle.net/20.500.12466/7368 |
| Access Level: | acceso abierto |
| Palabra clave: | Neurogenic Dysphagia Surface Electromyography Stroke Neurophysiology 32 Ciencias Médicas 61 Psicología |
| Sumario: | Dysphagia is a potentially hazardous under-diagnosed swallowing impairment that still lacks a simple quantitative assessment system. To help solve this issue, this article proposes new surface electromyography (sEMG) biomarkers that characterize its amplitude, timing, spectrum, and complexity. Measurements were made in 21 healthy volunteers, 50 patients with post-stroke dysphagia, and 32 S patients without dysphagia (controls). The dysphagic group exhibited higher variability of onset swallowing reaction time, longer onset-to-peak time, and higher complexity of sEMG signals than both healthy and control groups. Mild dysphagic patients presented inconsistent swallowing onset times, while severe cases had abnormal muscle signal sequencing, lower strength, and higher complexity than the healthy group. Right stroke lateralization presented greater sEMG alterations, and different sEMG profiles were observed according to the stroke lesion location (brainstem, cortical, subcortical). These results could help with dysphagia diagnosis and patient follow-up during the rehabilitation process. |
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