Journal article
Comparison of concentric needle versus hooked-wire electrodes in the canine larynx
Otolaryngology--head and neck surgery, Vol.118(5), pp.655-662
1998
DOI: 10.1016/S0194-5998(98)70236-0
PMID: 9591865
Abstract
BACKGROUND:
The use of a specific electrode type in laryngeal electromyography has not been standardized. Laryngeal electromyography is usually performed with hooked-wire electrodes or concentric needle electrodes. Hooked-wire electrodes have the advantage of allowing laryngeal movement with ease and comfort, whereas the concentric needle electrodes have benefits from a technical aspect and may be advanced, withdrawn, or redirected during attempts to appropriately place the electrode.
OBJECTIVES:
This study examines whether hooked-wire electrodes permit more stable recordings than standard concentric needle electrodes at rest and after large-scale movements of the larynx and surrounding structures. A histologic comparison of tissue injury resulting from placement and removal of the two electrode types is also made by evaluation of the vocal folds.
METHODS:
Electrodes were percutaneously placed into the thyroarytenoid muscles of 10 adult canines. Amplitude of electromyographic activity was measured and compared during vagal stimulation before and after large-scale laryngeal movements. Signal consistency over time was examined. Animals were killed and vocal fold injury was graded and compared histologically.
RESULTS:
Waveform morphology did not consistently differ between electrode types. The variability of electromyographic amplitude was greater for the hooked-wire electrode (
p < 0.05), whereas the mean amplitude measures before and after large-scale laryngeal movements did not differ (
p > 0.05). Inflammatory responses and hematoma formation were also similar.
CONCLUSIONS:
Waveform morphology of electromyographic signals registered from both electrode types show similar complex action potentials. There is no difference between the hooked-wire electrode and the concentric needle electrode in terms of electrode stability or vocal fold injury in the thyroarytenoid muscle after large-scale laryngeal movements. (Otolaryngol Head Neck Surg 1998;118:655-62.)
Details
- Title: Subtitle
- Comparison of concentric needle versus hooked-wire electrodes in the canine larynx
- Creators
- DEBRA M JAFFENANCY P SOLOMONROBERT A ROBINSONHENRY T HOFFMANERICH S LUSCHEI
- Resource Type
- Journal article
- Publication Details
- Otolaryngology--head and neck surgery, Vol.118(5), pp.655-662
- Publisher
- Mosby, Inc
- DOI
- 10.1016/S0194-5998(98)70236-0
- PMID
- 9591865
- ISSN
- 0194-5998
- eISSN
- 1097-6817
- Language
- English
- Date published
- 1998
- Academic Unit
- Communication Sciences and Disorders; Oral Pathology, Radiology and Medicine; Pathology; Radiation Oncology; Otolaryngology
- Record Identifier
- 9984007199802771
Metrics
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