Abstract
Introduction. Dysphagia is defined as the difficulty to transport food and liquids from the mouth to the stomach. The reference diagnostic method is the Videofluoroscopic Swallowing Study (VFSS); however, it is highly invasive since it exposes the patient to ionizing radiation. The surface electromyography (sEMG) records the electrical activity of the muscles in a non-invasive manner, so it may offer an alternative strategy for swallowing and dysphagia evaluation. Objetive. To evaluate the relationship between relative activation times in muscles involved in the oral and pharyngeal phase of swallowing, and kinematic events detected in the VFSS. Materials and methods. Surface electromyography signals from 10 neurological patients with dysphagia symptoms were analyzed and acquired simultaneously with VFSS. Five and 10 ml of yogurt and water, as well as 3 g of cracker were provided. Masseter, suprahyoid, and infrahyoid muscle groups were studied bilaterally. The passage of the bolus through the mandibular line, vallecula, and cricopharyngeal sphincter was analyzed in relation to the onset and offset times of each muscle activation. Results. The average time of the pharyngeal phase was 0.89 +/- 0.12 s. Mostly there is activation prior to the passage through the mandibular line and vallecula. The end of the muscular activity suggests being close to the end of the passage of food through the cricopharyngeal sphincter. Conclusion. The time of muscle activity, the duration of the pharyngeal phase and the sequence of muscle groups involved in swallowing were revealed using sEMG validated with VFSS.
Translated title of the contribution | Sincronización entre videodeglución y electromiografía de superficie en pacientes neurológicos con síntomas de disfagia |
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Original language | English |
Journal | Biomedica |
Volume | 42 |
Issue number | 4 |
DOIs | |
State | Published - 2022 |
Bibliographical note
Publisher Copyright:© 2022, Biomedica. All Rights Reserved.
Keywords
- Computer-assisted
- Deglutition disorders
- Electromyography
- Multiple sclerosis
- Neurologic manifestations
- Parkinson disease
- Signal processing
Types Minciencias
- Artículos de investigación con calidad Q3