Arytenoid lateralization for treatment of laryngeal paralysis in 10 cats.
OBJECTIVE
To describe the signalment, history, clinical signs, surgical technique, and outcome for cats with laryngeal paralysis that had arytenoid lateralization.


METHODS
Case series.


METHODS
Cats with laryngeal paralysis (n=10).


METHODS
Medical records (1996-2002) for cats with laryngeal paralysis that had arytenoid lateralization were reviewed for signalment, history, clinical signs, degree of paralysis, cause, concurrent medical conditions, surgical technique, and outcome. Follow-up information was obtained from owners or referring veterinarians.


RESULTS
Of 10 cats, 9 had bilateral and 1 had unilateral laryngeal paralysis. Arytenoid lateralization were unilateral (n=7), bilateral (1), and staged bilateral procedures (2), 10 days and 3 years apart, respectively. Postoperatively, 1 cat had persistent inspiratory noise because of minimal enlargement of the rima glottidis and 2 cats required a temporary tracheostomy for management of laryngeal swelling. Three cats developed aspiration pneumonia and died 4, 7, and 150 days after surgery; all 3 had bilateral (simultaneous or staged) procedures. Of the 7 remaining cats, 4 were alive at follow-up and 3 had died of causes unrelated to arytenoid lateralization. The calculated mean survival time for all 10 cats was 406 days (median, 150 days; range, 4-1825 days).


CONCLUSIONS
Arytenoid lateralization was effective at enlarging the rima glottidis and reducing signs of airway obstruction in most cats.


CONCLUSIONS
Unilateral arytenoid lateralization is a feasible option for the surgical management of cats with marked clinical signs; however, bilateral procedures should be avoided or at least performed with considerable caution because of the apparent risk for aspiration pneumonia.
Hardie
Robert J
RJ
Department of Surgical Sciences, School of Veterinary Medicine, The University of Wisconsin, Madison, WI 53706, USA. hardier@svm.vetmed.wisc.edu
Gunby
Jessica
J
Bjorling
Dale E
DE
D000818:Animals; D001193:Arytenoid Cartilage / Q000601:surgery*; D002371:Cat Diseases / Q000601:surgery*; D002415:Cats; D005260:Female; D008297:Male; D011183:Postoperative Complications / Q000662:veterinary; D012189:Retrospective Studies; D013514:Surgical Procedures, Operative / Q000009:adverse effects / Q000379:methods / Q000662:veterinary*; D014826:Vocal Cord Paralysis / Q000601:surgery / Q000662:veterinary*