0 148

Cited 17 times in

Protective Glottic Closure: Biomechanical Effects of Selective Laryngeal Denervation

Authors
 Young-Ho Kim  ;  Jagdeep S. Hundal  ;  Clarence T. Sasaki 
Citation
 Annals of Otology, Rhinology & Laryngology Supplement, Vol.114(4) : 271-275, 2005 
Journal Title
 Annals of Otology, Rhinology & Laryngology Supplement 
ISSN
 0096-8056 
Issue Date
2005
MeSH
Animals ; Biomechanical Phenomena ; Denervation* ; Electric Stimulation ; Electromyography ; Glottis/innervation* ; Glottis/physiopathology* ; Laryngeal Muscles/innervation ; Laryngeal Muscles/physiology ; Laryngeal Nerves/physiology* ; Male ; Pneumonia, Aspiration/physiopathology ; Pneumonia, Aspiration/prevention & control ; Reflex/physiology ; Sensory Thresholds/physiology ; Swine ; Transducers ; Vocal Cord Paralysis/physiopathology
Keywords
aspiration ; glottic closing force ; vocal cord paralysis
Abstract
Glottic closure constitutes the primary mechanism for prevention of intradeglutitive and postdeglutitive aspiration. Laryngeal paralysis therefore exerts a considerable impact on deglutition, yet little is understood regarding the biomechanical effects of selective denervation on the laryngeal protective function. We measured the glottic closing force (GCF) in each of 6 male, 40-kg Yorkshire pigs 1) after selective unilateral superior laryngeal nerve (SLN) section; 2) after selective unilateral recurrent laryngeal nerve (RLN) section; and/or 3) after combined SLN-RLN section as both right and left SLNs were simultaneously stimulated to evoke the glottic closure response. Stimulation was provided through an oscilloscope with bipolar platinum-iridium electrodes, and the GCF was measured with a pressure transducer positioned between the vocal cords. Six repetitive measures of GCF were obtained before nerve section, and 6 after nerve section, in each subject. Unilateral SLN section reduced the GCF to 54.14% of control, RLN section reduced the GCF to 23.39% of control, and combined SLN-RLN section reduced the GCF to 22.67% of control. These findings underscore the profound differential effects exerted by isolated lesions on the glottic closure function.
Full Text
http://aor.sagepub.com/content/114/4/271
DOI
10.1177/000348940511400404
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Young Ho(김영호)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/151209
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links