Document Detail

Epiglottic augmentation by use of polytetrafluoroethylene to correct dorsal displacement of the soft palate in a standardbred horse.
MedLine Citation:
PMID:  1429186     Owner:  NLM     Status:  MEDLINE    
A 2-year-old 400-kg Standardbred colt with a history of exercise intolerance was determined to have dorsal displacement of the soft palate (DDSP). Standing endoscopy revealed a soft, flaccid, and hypoplastic epiglottis and arytenoid cartilages that moved symmetrically and abducted fully. Lateral laryngeal radiography was used to calculate a corrected thyroepiglottic length of 6.48 cm. Videoendoscopy during exercise on a high-speed treadmill at standardized treadmill speeds was performed weekly for 3 consecutive weeks. The soft palate dorsally displaced at each examination. A sternohyoideus/sternothyroideus myectomy was followed by 2 weeks of stall rest and 2 weeks of treadmill training. Because endoscopy during exercise at standardized treadmill speeds caused the horse to dorsally displace the soft palate once a week for 3 weeks after the myectomy, this surgery was deemed ineffective in this horse. Epiglottic augmentation was performed by injecting 7 ml of polytetrafluoroethylene into the ventral submucosal space of the epiglottis. After 21 days of stall rest and 5 weeks of pasture rest, the horse was placed on a 2-month treadmill conditioning program. Using endoscopy at standardized treadmill speeds, exercise efforts to encourage DDSP were unsuccessful, which suggested that epiglottic augmentation by use of polytetrafluoroethylene was an effective surgical treatment to correct dorsal displacement of the soft palate in this horse. It is believed that polytetrafluoroethylene increases the rigidity of the epiglottis, allowing it to maintain the ventral position of the soft palate.
J G Peloso; J A Stick; F A Nickels; J M Lumsden; F J Derksen
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of the American Veterinary Medical Association     Volume:  201     ISSN:  0003-1488     ISO Abbreviation:  J. Am. Vet. Med. Assoc.     Publication Date:  1992 Nov 
Date Detail:
Created Date:  1992-12-23     Completed Date:  1992-12-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7503067     Medline TA:  J Am Vet Med Assoc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1393-5     Citation Subset:  IM    
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824-1314.
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MeSH Terms
Exercise Test / veterinary
Horse Diseases / surgery*
Laryngoscopy / veterinary
Mouth Diseases / surgery,  veterinary*
Neck Muscles / surgery
Palate, Soft
Physical Exertion
Prostheses and Implants / veterinary*
Reg. No./Substance:

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