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Updated: Jun 24, 2025

Dissection Techniques and Histological Sampling of the Heart in Large Animal Models for Cardiovascular Diseases

Dissection Techniques and Histological Sampling of the Heart in Large Animal Models for Cardiovascular Diseases

Published on: June 16, 2022

Double outlet right atrium in a dog.

F Sarcinella¹, B Pedro¹, S Sudunagunta¹

¹Willows Veterinary Centre & Referral Service, Highlands Road, West Midlands, B90 4NH, UK.

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology

|June 8, 2024

Summary

Double outlet right atrium, a rare congenital heart defect, was identified in a puppy for the first time. This condition involves the right atrium draining into both ventricles, previously unreported in dogs.

Area of Science:

Veterinary Cardiology
Congenital Cardiac Abnormalities

Background:

Double outlet right atrium (DORA) is a rare congenital cardiac abnormality.

Keywords:

Atrioventricular canal Canine congenital cardiac defect Endocardial cushion defect Interatrial septum deviation Ventriculo-atrial malalignment defect

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It has been documented in humans and felines but not previously in canines.

DORA typically presents with a leftward deviation of the interatrial septum and an atrial septal defect, leading to the right atrium draining into both ventricles.