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Case Reports
. 2023 Oct 25;8(1):36-40.
doi: 10.1016/j.case.2023.09.001. eCollection 2024 Jan.

Double-Outlet Right Atrium in a Young Cat

Fabio Sarcinella  1   2 , Brigite Pedro  2 , Elizabeth F Bode  2 , Richard Blundell  3 , Joanna Dukes-McEwan  2
Affiliations
Case Reports

Double-Outlet Right Atrium in a Young Cat

Fabio Sarcinella et al. CASE (Phila). .
No abstract available

Keywords: Endocardial cushion defect; Feline congenital cardiac defect; Feline echocardiography; Interatrial septum deviation.

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Figures

None
Graphical abstract
Figure 1
Figure 1
Two-dimensional TTE, right parasternal long-axis 4-chamber view, demonstrates leftward deviation of the IAS (arrow) that appears as a shelf on the dorsal aspect of the mitral valve. The RA communicates with both ventricles, and there is a small ostium primum septal defect (∗) resulting in obstruction to the left atrial outflow.
Figure 2
Figure 2
Two-dimensional TTE, left apical 4-chamber view (aligned for assessment of LA outflow), pulsed-wave spectral Doppler, demonstrates increased blood flow velocity (∼1.7 m/sec) due to the leftward deviation of the IAS and the small ostium primum septal defect.
Figure 3
Figure 3
Two-dimensional TTE, left apical 4-chamber view without (left) and with (right) color-flow Doppler, demonstrates the flow obstruction to LA outflow caused by the leftward deviation of the IAS (arrow) and ostium primum defect (∗). MV, Mitral valve.
Figure 4
Figure 4
Dorsoventral (DV, A) and right lateral (RL, B) radiographic views of the thorax demonstrate a focal area of increased soft tissue opacity with an extrapleural sign between the cranial and caudal parts of the left cranial lung lobe (DV view) and a thin interlobar fissure between the cranial and caudal lung field (RL view). There is also a diffuse, mild interstitial lung pattern throughout the rest of the pulmonary parenchyma, and the pulmonary veins are dilated and taper peripherally. The cardiac silhouette is enlarged (vertebral heart size = 9 [reference interval, 6.7-8.1]).
Figure 5
Figure 5
Gross pathology image of a sagittal plane of the heart with a metallic probe (red arrow) passing from the LA into the LV through a small ostium primum defect and part of the extended RA. The IAS (white arrow) deviates leftward and dorsal to the mitral valve. AVC, AV canal.
See this image and copyright information in PMC

References

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    1. Durham J., Maisenbacher H. Double-outlet right atrium in a 9 year-old cat. J Vet Cardiol. 2014;16:127–131. - PubMed
    1. Van Mierop L.H.S. In: Second Henry Ford Hospital International Symposium on Cardiac Surgery. Davila J.C., editor. Appleton-Century-Crofts; New York, NY: 1977. Pathology and pathogenesis of endocardial cushion defects. Surgical implications; pp. 201–207.

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