Document Detail


Effects of unilateral laser-assisted ventriculocordectomy in horses with laryngeal hemiplegia.
MedLine Citation:
PMID:  17124837     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
REASONS FOR PERFORMING STUDY: Recent studies have evaluated surgical techniques aimed at reducing noise and improving airway function in horses with recurrent laryngeal neuropathy (RLN). These techniques require general anaesthesia and are invasive. A minimally invasive transnasal surgical technique for treatment of RLN that may be employed in the standing, sedated horse would be advantageous. OBJECTIVE: To determine whether unilateral laser-assisted ventriculocordectomy (LVC) improves upper airway function and reduces noise during inhalation in exercising horses with laryngeal hemiplegia (LH). METHODS: Six Standardbred horses were used; respiratory sound and inspiratory transupper airway pressure (Pui) measured before and after induction of LH, and 60, 90 and 120 days after LVC. Inspiratory sound level (SL) and the sound intensities of formants 1, 2 and 3 (Fl, F2 and F3, respectively), were measured using computer-based sound analysis programmes. In addition, upper airway endoscopy was performed at each time interval, at rest and during treadmill exercise. RESULTS: In LH-affected horses, Pui, SL and the sound intensity of F2 and F3 were increased significantly from baseline values. At 60 days after LVC, Pui and SL had returned to baseline, and F2 and F3 values had improved partially compared to LH values. At 90 and 120 days, however, SL increased again to LH levels. CONCLUSIONS: LVC decreases LH-associated airway obstruction by 60 days after surgery, and reduces inspiratory noise but not as effectively as bilateral ventriculocordectomy. POTENTIAL RELEVANCE: LVC may be recommended as a treatment of LH, where reduction of upper airway obstruction and respiratory noise is desired and the owner wishes to avoid risks associated with a laryngotomy incision or general anaesthesia.
Authors:
P Robinson; F J Derksen; J A Stick; K E Sullins; P G DeTolve; N E Robinson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Equine veterinary journal     Volume:  38     ISSN:  0425-1644     ISO Abbreviation:  Equine Vet. J.     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-11-27     Completed Date:  2006-12-21     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0173320     Medline TA:  Equine Vet J     Country:  England    
Other Details:
Languages:  eng     Pagination:  491-6     Citation Subset:  IM    
Affiliation:
Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan 48824.
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Hemiplegia / surgery,  veterinary*
Horse Diseases / surgery*
Horses
Laryngectomy / methods,  veterinary*
Laser Therapy / methods,  veterinary*
Male
Physical Conditioning, Animal / physiology
Pressure
Respiratory Sounds / veterinary*
Risk Factors
Surgical Procedures, Minimally Invasive / methods,  veterinary
Time Factors
Treatment Outcome
Vocal Cord Paralysis / surgery,  veterinary*
Vocal Cords / surgery

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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