In vitro evaluation of the effect of a prototype dynamic laryngoplasty system on arytenoid abduction.
Abstract: To determine the effect of a prototype dynamic laryngoplasty system (DLPS) on arytenoid abduction. Methods: In vitro experimental. Methods: 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. Conclusions: 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. Conclusions: These results support further evaluation of the DLPS to determine the effect of changes in DLPS on airway resistance.
© 2018 The American College of Veterinary Surgeons.
Publication Date: 2018-08-07 PubMed ID: 30084499DOI: 10.1111/vsu.12933Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Journal Article
Summary
This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.
The research investigates the effect of a prototype dynamic laryngoplasty system (DLPS) on arytenoid abduction in horses, with results indicating a promising increase in the degree of abduction. This suggests a potential improvement in airway resistance during exertion and warrants further investigation of the DLPS.
Research Methodology
- The study used an in vitro experimental approach involving ten equine larynges. These were dissected and mounted with the right arytenoid in a maximally abducted position to test.
- A left-sided laryngoplasty, a surgical procedure to adjust airway blockages, was performed using a particular type of suture and anchor.
- The experiment was done in two phases. Phase one involved tightening the suture in 1-mm increments without the DLPS device, gathering a digital image at each stage. Phase two involved tying the suture with the DLPS in place and gathering digital images at three stages of DLPS activation.
Results and Findings
- The tests completed successfully for nine of the larynges. In phase one, a total shortening of approximately 25.89mm was possible, increasing the left to right quotient (LRQ), a measure indicating the difference between the left and right sides of the larynx, from 0.59 to 1.07.
- In phase two, activation of the DLPS further increased the LRQ to 0.97. This change equates to about 18.7 mm of shortening, based on the results from phase one.
- The maximum pressure achieved by the DLPS was around 37.33 psi.
Conclusions and Further Work
- The DLPS led to an increase in the degree of arytenoid abduction in the in vitro tests. There was an effective shortening of laryngoplasty sutures by about 18.7 mm, based on the initial phase’s results.
- These promising findings support additional probing to better understand potential changes in DLPS influence on airway resistance. This potentially opens a path towards novel procedures for treatment of equine airway obstructions.
Cite This Article
APA
Ahern BJ, Lim YW, van Eps A, Franklin S.
(2018).
In vitro evaluation of the effect of a prototype dynamic laryngoplasty system on arytenoid abduction.
Vet Surg, 47(6), 837-842.
https://doi.org/10.1111/vsu.12933 Publication
Researcher Affiliations
- Equine Specialist Hospital, University of Queensland, Gatton Campus, Gatton, Queensland, Australia.
- Equine Specialist Hospital, University of Queensland, Gatton Campus, Gatton, Queensland, Australia.
- Equine Specialist Hospital, University of Queensland, Gatton Campus, Gatton, Queensland, Australia.
- Equine Health and Performance Centre, University of Adelaide, Roseworthy, South Australia, Australia.
MeSH Terms
- Animals
- Arytenoid Cartilage / surgery
- Glottis / surgery
- Horses / surgery
- Laryngoplasty / veterinary
- Sutures / veterinary
Citations
This article has been cited 0 times.Use Nutrition Calculator
Check if your horse's diet meets their nutrition requirements with our easy-to-use tool Check your horse's diet with our easy-to-use tool
Talk to a Nutritionist
Discuss your horse's feeding plan with our experts over a free phone consultation Discuss your horse's diet over a phone consultation
Submit Diet Evaluation
Get a customized feeding plan for your horse formulated by our equine nutritionists Get a custom feeding plan formulated by our nutritionists
