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Use of phenytoin to treat digitalis-induced cardiac arrhythmias in a miniature Shetland pony
  1. D. Wijnberg, DVM1,
  2. J. H. van der Kolk, DVM, PhD1 and
  3. E. G. Hiddink, PharmD2
  1. 1 Department of Large Animal Medicine and Nutrition
  2. 2 Veterinary Pharmacy, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.152,3508 TD Utrecht, The Netherlands


Two miniature Shetland ponies showing clinical signs of Digitalis purpurea (foxglove) poisoning were examined. One animal died shortly afterwards, but the second was treated successfully with the antiarrhythmic agent, phenytoin, and was discharged after 16 days.

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