• 1. Bahr R. The heart and pulmonary vessels. In: Thrall DE, ed. Textbook of veterinary diagnostic radiology. 6th ed. St Louis: Elsevier, 2013;585607.

    • Search Google Scholar
    • Export Citation
  • 2. Schrope DP. Prevalence of congenital heart disease in 76,301 mixed-breed dogs and 57,025 mixed-breed cats. J Vet Cardiol 2015;17:192202.

    • Search Google Scholar
    • Export Citation
  • 3. Bonagura JD, Lehmkuhl LB. Congenital disease. In: Fox PR, Sisson D, Moïse NS, eds. Textbook of canine and feline cardiology. 2nd ed. Philadelphia: WB Saunders Co, 1999;505.

    • Search Google Scholar
    • Export Citation
  • 4. Coté E, Ettinger SJ. Long-term clinical management of right-to-left (“reversed”) patent ductus arteriosus in 3 dogs. J Vet Intern Med 2001;15:3942.

    • Search Google Scholar
    • Export Citation
  • 5. Ware WA. Congenital cardiovascular disease. In: Cardiovascular disease in small animal medicine. Boca Raton, Fla: CRC Press, 2011; 228262.

    • Search Google Scholar
    • Export Citation
  • 6. Seibert RL, Maisenbacher HW III, Prosek R, et al. Successful closure of left-to-right patent ductus arteriosus in three dogs with concurrent pulmonary hypertension. J Vet Cardiol 2010;12:6773.

    • Search Google Scholar
    • Export Citation
  • 7. Gordon SG, Estrada AH. Patent ductus arteriosus. In: Gordon SG, Estrada AH, eds. The ABCDs of small animal cardiology: a practical manual. Guelph, ON, Canada: LifeLearn Inc, 2013; 364370.

    • Search Google Scholar
    • Export Citation
  • 8. Nakamura K, Yamasaki M, Ohta H, et al. Effects of sildenafil citrate on five dogs with Eisenmeger's syndrome. J Small Anim Pract 2011;52:595598.

    • Search Google Scholar
    • Export Citation
  • 9. Brown AJ, Davidson E, Sleeper MM. Clinical efficacy of sildenafil in treatment of pulmonary arterial hypertension in dogs. J Vet Intern Med 2010;24:850854.

    • Search Google Scholar
    • Export Citation

Advertisement

What Is Your Diagnosis?

View More View Less
  • 1 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849.
  • | 2 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849.
  • | 3 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849.
  • | 4 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849.
  • | 5 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849.
History

A 5.0-kg (11.0-lb) 3-year-old sexually intact male Shih Tzu was referred for investigation of an enlarged heart that had been observed on routine thoracic radiographs by the referring veterinarian. When the patient was a puppy, medical records from the referring veterinarian indicated that a loud left-sided heart murmur was auscultated (murmur timing was not documented). This heart murmur decreased in intensity and was no longer present by 6 months of age. The patient had a recent history of gastrointestinal upset, but had been otherwise apparently healthy.

On physical examination, the patient was bright, alert, and responsive, with a heart

Contributor Notes

Address correspondence to Dr. Winter (rlw0041@auburn.edu).