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  • 1 Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843.
  • | 2 Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843.
  • | 3 Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843.

A 5-year-old 28.9-kg (63.6-lb) neutered male Boxer was referred to the Veterinary Medical Teaching Hospital at Texas A&M University for evaluation of an arrhythmia that was ausculted during routine physical examination. Two episodes of syncope had occurred 2 days prior to the evaluation. Additionally, occasional instances of cough were reported. The dog was successfully treated for heartworm infection 4 years earlier and had been given monthly heartworm preventative regularly since that time. The owner reported that the dog had a history of extreme anxiety during each visit to a veterinary hospital.

At the evaluation, the dog was bright and alert.

Contributor Notes

Address correspondence to Dr. Saunders (asaunders@cvm.tamu.edu).