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Respiratory stridor associated with polymyopathy suspected to be hyperkalemic periodic paralysis in four quarter horse foals.

Abstract
Four Quarter Horse foals ranging in age from 6 days to 2 months were determined to have upper airway stridor secondary to polymyopathy suspected to be hyperkalemic periodic paralysis. Electromyography revealed spontaneous muscle activity in all muscles examined. Electromyographic findings were similar in the dams of 3 foals (No. 1, 3 and 4). Hyperkalemia was found in foals 1 and 4. Endoscopically, the upper airway stridor in foals 1 and 3 was confirmed to be attributable to laryngeal and pharyngeal collapse or spasm. Foals 1, 2, and 3 were treated with acetazolamide. Foal 4 was not treated, at the owner's request. Foals 2 and 3 improved with treatment, foal 4's condition was static, and foal 1 required a tracheostomy and laryngeal surgery to manage its upper airway stridor.
AuthorsJ L Traub-Dargatz, J T Ingram, T S Stashak, M L Kiper, S Tarr, G Child, C G MacAllister
JournalJournal of the American Veterinary Medical Association (J Am Vet Med Assoc) Vol. 201 Issue 1 Pg. 85-9 (Jul 01 1992) ISSN: 0003-1488 [Print] United States
PMID1644652 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Acetazolamide
  • Calcium
Topics
  • Acetazolamide (therapeutic use)
  • Animals
  • Arytenoid Cartilage (surgery)
  • Calcium (therapeutic use)
  • Electromyography (veterinary)
  • Fluid Therapy (veterinary)
  • Horse Diseases (etiology, therapy)
  • Horses
  • Hyperkalemia (complications, therapy, veterinary)
  • Male
  • Muscular Diseases (complications, etiology, therapy, veterinary)
  • Pharyngeal Diseases (complications, etiology, veterinary)
  • Respiratory Sounds (etiology, veterinary)
  • Tracheostomy (veterinary)
  • Vocal Cord Paralysis (complications, etiology, veterinary)

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