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Upper Airway Function during Maximal Exercise in Horses with Obstructive Upper Airway Lesions Effect of Surgical Treatment
Author(s) -
WILLIAMS J. WESLEY,
MEAGHER DENNIS M.,
PASCOE JOHN R.,
HORNOF WILLIAM J.
Publication year - 1990
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1990.tb01156.x
Subject(s) - medicine , airway , airway obstruction , arytenoid cartilage , hyperplasia , anesthesia , surgery , larynx
Upper airway pressure was measured during maximal exercise in 10 Thoroughbred racehorses with naturally occurring upper airway obstruction. Left laryngeal hemiplegia and arytenoid chondropathy resulted in substantial increases (30–40 cm H 2 O) in inspiratory upper airway pressure (P 1 ), whereas complicated aryepiglottic entrapment and subepiglottic cysts produced only modest increases (15 cm H 2 O) in P. Uncomplicated aryepiglottic entrapment and grade IV pharyngeal lymphoid hyperplasia produced only slight increases (3–5 cm H 2 O). In general, surgical procedures restored airway pressures to within normal limits. Subtotal arytenoidectomy improved but did not normalize airway pressures in horses with arytenoid chondropathy. Pharyngeal lymphoid hyperplasia appeared to have little effect on upper airway function.