Effect of Chronic Electrical Stimulation of Laryngeal Muscle on Voice
| Autor: | David L. Zealear, Cheryl R. Billante, James L. Netterville, Mark S. Courey |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Larynx
Time Factors Voice Quality Electric Stimulation Therapy Electromyography 03 medical and health sciences 0302 clinical medicine medicine Humans Vocal cord paralysis Botulinum Toxins Type A 030223 otorhinolaryngology medicine.diagnostic_test business.industry Endoscopy General Medicine medicine.disease medicine.anatomical_structure Neuromuscular Agents Otorhinolaryngology Posterior cricoarytenoid muscle Laryngeal paralysis 030220 oncology & carcinogenesis Laryngeal Muscle Anesthesia Voice Breathing Female Laryngeal Muscles Airway business Vocal Cord Paralysis |
| Zdroj: | Annals of Otology, Rhinology & Laryngology. 111:328-332 |
| ISSN: | 1943-572X 0003-4894 |
| DOI: | 10.1177/000348940211100408 |
| Popis: | Conventional surgical therapies for bilateral laryngeal paralysis sacrifice voice to enlarge the airway. Electrical pacing of the posterior cricoarytenoid (PCA) muscle to restore glottal opening and allow ventilation offers a new treatment approach. The purpose of this investigation was to determine whether long-term stimulation of the PCA muscle altered perceptual, acoustic, and aerodynamic parameters of voice. Two patients underwent implantation of a Medtronic Itrel II laryngeal pacemaker. Voice evaluation was performed before surgery and at monthly postoperative sessions with the pacemaker off. Months of PCA stimulation did not change perceptual descriptors of voice quality. Measures of fundamental frequency and intensity, upper and lower limits of the dynamic frequency and intensity range, and phonatory flow rates were largely unaltered. The results indicated that there was no effect of laryngeal pacing on voice. |
| Databáze: | OpenAIRE |
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