In vitro evaluation of the effect of a prototype dynamic laryngoplasty system on arytenoid abduction.
Vet Surg
; 47(6): 837-842, 2018 Aug.
Article
em En
| MEDLINE
| ID: mdl-30084499
ABSTRACT
OBJECTIVE:
To determine the effect of a prototype dynamic laryngoplasty system (DLPS) on arytenoid abduction. STUDYDESIGN:
In vitro experimental. STUDY POPULATION Ten equine larynges.METHODS:
Dissected larynges were mounted, and the right arytenoid was maximally abducted for testing. A left-sided laryngoplasty (LP) was performed by using a strand of No. 2 FiberWire and a FASTakII anchor. Phase 1 involved tightening the suture, without the DLPS device in place, in 1-mm increments and acquiring a digital image of the rima glottidis at each increment. Phase 2 involved tying the suture with the DLPS in place at a left to right quotient (LRQ) of 0.7. Digital images were subsequently taken at 3 stages of DLPS activation (0, 25, and 50 or maximal psi) and analysed to calculate LRQ.RESULTS:
All tests were completed for 9 larynges. In phase 1, a total shortening of 25.89 ± 1.27 mm was possible, which increased the LRQ from 0.59 ± 0.02 to 1.07 ± 0.12. In phase 2, activation of the DLPS increased the LRQ from 0.70 ± 0.05 to 0.97 ± 0.09. This change in LRQ equated to 18.7 mm of shortening on the basis of phase 1 results. The maximum psi of the DLPS achieved was 37.33 ± 5.96.CONCLUSION:
The DLPS increased the degree of arytenoid abduction in vitro. This change in LRQ equated to 18.7 mm of shortening of the LP suture based on phase 1 results. CLINICAL IMPACT These results support further evaluation of the DLPS to determine the effect of changes in DLPS on airway resistance.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cartilagem Aritenoide
/
Laringoplastia
/
Glote
/
Cavalos
Limite:
Animals
Idioma:
En
Revista:
Vet Surg
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Austrália