Total anomalous pulmonary venous connection in a mature dog

Abstract

A 2-year 10-month, male neutered, crossbreed dog presented for evaluation of cyanosis and exercise intolerance. Doppler echocardiography revealed severe dilation of the right atrium and right ventricle with moderate pulmonary hypertension. Right-to-left shunting across a large ostium secundum atrial septal defect was confirmed by contrast echocardiography. Thoracic radiography revealed a vascular pattern together with cardiomegaly. Computed tomography angiography identified an anomalous pulmonary venous connection in which all pulmonary veins, apart from the right middle vein, coalesced into a single, large aneurysmal vein that then drained into the right atrium via the cranial vena cava. The distal opening of the right middle pulmonary vein could not be determined. A presumptive diagnosis of partial anomalous pulmonary venous connection was made. The dog was medically managed with sildenafil (1.5 mg/kg by mouth [PO] every 8 h) and remained clinically stable for 2 months before euthanasia due to worsening exercise intolerance. On postmortem examination, all pulmonary veins, including the right middle vein, were shown to communicate with a single, large central vein. This large vein then connected with the right atrium via the cranial vena cava, consistent with a total anomalous pulmonary venous connection. This case report describes a rare congenital abnormality which has not been previously reported in a mature dog.


EPub: Journal of Veterinary Cardiology 2019 Feb;21:10-17
DOI: 10.1016/j.jvc.2018.11.003
PMID: 30797440
RGID: 329449868
Full Text: article.pdf


Authors: Longo Maurizio, Bode Elizabeth, Breheny Craig R , Del Pozo Jorge, Culshaw Geoff J, Pereira Yolanda Martinez.

CTO VET
CTO VET

Il Centro Traumatologico Ortopedico Veterinario di Arenzano è una Clinica Veterinaria attiva 24 h su 24 per problemi ortopedici e neurologici degli animali da affezione.

Fornisce un servizio altamente specialistico e coordinato nell'ambito della chirurgia ortopedica, della neurochirurgia, della diagnostica per immagini, della fisioterapia e riabilitazione veterinaria affiancando il medico referente nel pieno rispetto delle sue competenze e della sua professionalità.