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Home / Equine Research Bank / Vet Surg / Dynamic laryngeal collapse associated with poll flexion as a...
Veterinary surgery : VS2019; 49(3); 600-606; doi: 10.1111/vsu.13351

Dynamic laryngeal collapse associated with poll flexion as a complication of laryngeal tie-forward surgery in three harness racehorses.

Abstract: To report dynamic laryngeal collapse (DLC) associated with poll flexion as a potential complication of the laryngeal tie-forward procedure (LTFP) in harness racehorses. Methods: Short case series. Methods: Three harness racehorses. Methods: Preoperative and postoperative medical records of all harness racehorses that underwent the LTFP were reviewed, as were high-speed treadmill videoendoscopy recordings of 35 horses that returned for upper airway evaluation postoperatively. Results: One standardbred and two Norwegian coldblooded trotters in which dorsal displacement of the soft palate had been initially diagnosed were found to have bilateral arytenoid cartilage and vocal fold collapse associated with poll flexion after the LTFP. These three horses were otherwise clinically normal when exercised in free head carriage. Conclusions: Dynamic laryngeal collapse associated with poll flexion can occur as a complication after the LTFP in harness racehorses and should be considered as a differential in horses with persistence of airway problems after surgery. Conclusions: Postoperative DLC may be underdiagnosed in harness racehorses because this complication is obvious only when horses are driven with bit and reins during high speed treadmill or overground videoendoscopy.
© 2019 The Authors. Veterinary Surgery published by Wiley Periodicals, Inc. on behalf of American College of Veterinary Surgeons.
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Publication Date: 2019-11-21 PubMed ID: 31750568DOI: 10.1111/vsu.13351Google Scholar: Lookup
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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 mentioned research discusses complications that arise from laryngeal tie-forward procedures (LTFP), implicating it in creating a condition called dynamic laryngeal collapse (DLC) associated with poll flexion. This condition was discovered in three harness racehorses following surgery.

Study Methodology

  • The study took into account a short case series involving three harness racehorses that underwent the LTFP surgical procedure.
  • The researchers conducted a comprehensive review of both preoperative and postoperative medical records belonging to all the horses which went through LTFP.
  • The researchers also reviewed high-speed treadmill videoendoscopy recordings of the 35 horses that reported back for an upper airway evaluation after the surgery.

Study Findings

  • The results of the study revealed that one standardbred and two Norwegian coldblooded trotters that initially suffered from dorsal displacement of the soft palate were observed to have developed a collapse in the arytenoid cartilage and vocal fold. This change was only apparent when the horses flexed their polls, a condition occurring after LTFP surgery.
  • These three horses did not exhibit any other clinical anomalies when allowed to exercise with their heads free – a condition known as free head carriage.

Conclusions and Implications

  • The findings suggest that DLC associated with poll flexion might happen as a complication post-LTFP surgery and should be considered while assessing persistent airway problems in horses post-surgery.
  • The study hints that postoperative DLC could potentially be underdiagnosed in harness racehorses because this complication is only noticeably manifest when the horses are guided using bit and reins during high-speed treadmill or overground videoendoscopy testing.
  • The findings have reverberating implications on the veterinary management of racehorses, as it emphasizes the need for precise postoperative assessments to diagnose and address the potential occurrence of DLC.

Cite This Article

APA
Vermedal H, Strand E. (2019). Dynamic laryngeal collapse associated with poll flexion as a complication of laryngeal tie-forward surgery in three harness racehorses. Vet Surg, 49(3), 600-606. https://doi.org/10.1111/vsu.13351

Publication

Veterinary surgery : VS
ISSN: 1532-950X
NlmUniqueID: 8113214
Country: United States
Language: English
Volume: 49
Issue: 3
Pages: 600-606

Researcher Affiliations

Vermedal, Hanna
  • Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway.
Strand, Eric
  • Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway.

MeSH Terms

  • Animals
  • Female
  • Horse Diseases / surgery
  • Horses
  • Laryngeal Diseases / surgery
  • Laryngeal Diseases / veterinary
  • Larynx / pathology
  • Larynx / surgery
  • Male
  • Vocal Cords / pathology

References

This article includes 23 references
  1. Strand E, Hanche-Olsen S, Grønvold AMR, Mellum CN. Dynamic bilateral arytenoid and vocal fold collapse associated with head flexion in 5 Norwegian Coldblooded Trotter racehorses.. Equine Vet Educ 2004;16:242-250.
  2. Fjordbakk CT, Strand E, Hanche-Olsen S. Surgical and conservative management of bilateral dynamic laryngeal collapse associated with poll flexion in harness race horses.. Vet Surg 2008;37:501-507.
  3. Strand E, Fjordbakk CT, Sundberg K, Spangen L, Lunde H, Hanche-Olsen S. Relative prevalence of upper respiratory tract obstructive disorders in two breeds of harness racehorses (185 cases: 1998-2006).. Equine Vet J 2012;44:518-523.
  4. Strand E, Fjordbakk CT, Holcombe SJ, Risberg A, Chalmers HJ. Effect of poll flexion and dynamic laryngeal collapse on tracheal pressure in Norwegian Coldblooded Trotter racehorses.. Equine Vet J 2009;41:59-64.
  5. Hanche-Olsen S, Rannem L, Strand E. Bilateral dynamic laryngeal collapse associated with collection in “high poll flexion” in a gaited Icelandic horse.. Pferdeheilkunde 2010;26:810-813.
  6. Allen KJ, Terron-Canedo N, Hillyer MH, Franklin SH. Equitation and exercise factors affecting dynamic upper respiratory tract function: a review illustrated by case reports.. Equine Vet Educ 2011;23:361-368.
  7. Hackett ES, Leise BS. Exercising upper respiratory videoendoscopic findings of 50 competition draught horses with abnormal respiratory noise and/or poor performance.. Equine Vet J 2018;51:370-374.
  8. McCarrel TM, Woodie JB. Update on laryngeal disorders and treatment.. Vet Clin North Am Equine Pract 2015;31:13-26.
  9. Fjordbakk CT, Holcombe S, Fintl C, Chalmers H, Strand E. A novel treatment for dynamic laryngeal collapse associated with poll flexion: the modified checkrein.. Equine Vet J 2012;44:207-213.
  10. Fjordbakk CT, Chalmers HJ, Holcombe SJ, Strand E. Results of upper airway radiography and ultrasonography predict dynamic laryngeal collapse in affected horses.. Equine Vet J 2013;45:705-710.
  11. Lane JG, Bladon B, Little DR, Naylor JR, Franklin SH. Dynamic obstructions of the equine upper respiratory tract. Part 1: observations during high-speed treadmill endoscopy of 600 Thoroughbred racehorses.. Equine Vet J 2006;38:393-399.
  12. Cheetham J, Pigott JH, Thorson LM, Mohammed HO, Ducharme NG. Racing performance following the laryngeal tie-forward procedure: a case-controlled study.. Equine Vet J 2008;40:501-507.
  13. Woodie JB, Ducharme NG, Kanter P, Hackett RP, Erb HN. Surgical advancement of the larynx (laryngeal tie-forward) as a treatment for dorsal displacement of the soft palate in horses: a prospective study 2001-2004.. Equine Vet J 2005;37:418-423.
  14. King DS, Tulleners E, Martin BB Jr, Parente EJ, Boston R. Clinical experiences with axial deviation of the aryepiglottic folds in 52 racehorses.. Vet Surg 2001;30:151-160.
  15. Hawe C, Dixon PM, Mayhew IG. A study of an electrodiagnostic technique for the evaluation of equine recurrent laryngeal neuropathy.. Equine Vet J 2001;33:459-465.
  16. Chalmers HJ, Yeager AE, Cheetham J, Ducharme N. Diagnostic sensitivity of subjective and quantitative laryngeal ultrasonography for recurrent laryngeal neuropathy in horses.. Vet Radiol Ultrasound 2012;53:660-666.
  17. Fjordbakk CT, Revold T, Goodwin D, Piercy RJ. Histopathological assessment of intrinsic laryngeal musculature in horses with dynamic laryngeal collapse.. Equine Vet J 2015;47:603-608.
  18. Petsche VM, Derksen FJ, Berney CE, Robinson NE. Effect of head position on upper airway function in exercising horses.. Equine Vet J 1995;27:18-22.
  19. McCluskie LK, Franklin SH, Lane JG, Tremaine WH, Allen KJ. Effect of head position on radiographic assessment of laryngeal tie-forward procedure in horses.. Vet Surg 2008;37:608-612.
  20. Cehak A, Rohn K, Barton AK, Stadler P, Ohnesorge B. Effect of head and neck position on pharyngeal diameter in horses.. Vet Radiol Ultrasound 2010;51:491-497.
  21. Ducharme NG. Update on laryngeal tie-forward operation.. In: Proceedings from the Equine Upper Airway Symposium; September 19-22, 2013; Lexington, Kentucky. p 1-3.
  22. Dart AJ. Vocal fold collapse after laryngeal tie-forward correction of dorsal displacement of the soft palate in a horse.. Vet Surg 2006;35:584-585.
  23. Holcombe SJ, Rodriguez K, Lane J, Caron JP. Cricothyroid muscle function and vocal fold stability in exercising horses.. Vet Surg 2006;35:495-500.

Citations

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