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Related Experiment Video

Updated: Feb 9, 2026

The Other End of the Leash: An Experimental Test to Analyze How Owners Interact with Their Pet Dogs
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Persistent Truncus Arteriosus in a Dog.

H C Chen1, P Bussian1, J E Whitehead1

  • 1Departments of Pathology and Medicine, Henry Bergh Memorial Hospital, American Society for Prevention of Cruelty to Animals, New York, N.Y.

Veterinary Pathology
|June 10, 2018
PubMed
Summary
This summary is machine-generated.

A young mixed terrier presented with persistent truncus arteriosus, a severe congenital heart defect. Necropsy revealed this defect, along with a ventricular septal defect and a hypoplastic pulmonary artery.

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Area of Science:

  • Veterinary Cardiology
  • Congenital Cardiovascular Anomalies
  • Canine Pathology

Background:

  • Persistent truncus arteriosus (PTA) is a rare congenital heart defect where the aorta and pulmonary artery do not separate.
  • This condition leads to mixing of oxygenated and deoxygenated blood, causing significant hemodynamic stress.

Purpose of the Study:

  • To describe a case of complete persistent truncus arteriosus in a 5-week-old mixed terrier.
  • To detail the cardiovascular anomalies identified at necropsy.
  • To compare the canine case with human classifications of PTA.

Main Methods:

  • Case report of a 5-week-old male mixed terrier with a grade IV cardiac murmur.
  • Necropsy examination to identify cardiovascular anomalies.
  • Anatomical classification based on established criteria.

Main Results:

  • Complete persistent truncus arteriosus originating from the right ventricle was identified.
  • A ventricular septal defect was also present.
  • The malformation was classified as type I PTA due to a patent, small, hypoplastic pulmonary artery, despite resemblance to human type IV PTA.

Conclusions:

  • This case highlights a rare congenital heart defect in a canine patient.
  • The anatomical classification of persistent truncus arteriosus in this dog differed from its resemblance to human type IV PTA.
  • Accurate classification is crucial for understanding and potentially managing such complex cardiac malformations in veterinary medicine.