Common arterial trunk in a cat: a high-resolution morphological analysis with micro-computed tomography

Area of Science:

• Veterinary Cardiology
• Congenital Heart Disease
• Advanced Imaging Techniques

Background:

• Congenital heart defects are critical in veterinary cardiology.
• Early diagnosis and understanding of complex cardiac anomalies are vital for prognosis.

Observation:

• A 6-month-old cat presented with respiratory distress and a severe heart murmur.
• Echocardiography revealed ventricular hypertrophy, a dilated aorta, ventricular septal defect, and absent pulmonary arteries.
• Progressive cardiac decompensation led to congestive heart failure and death.

Findings:

• Postmortem micro-computed tomography (CT) confirmed a common arterial trunk, an aortic-dominant type, with absence of the pulmonary trunk.
• The common trunk bifurcated into the aorta and pulmonary arteries distally.
• This detailed imaging elucidated the complex cardiac anatomy.

Implications:

• Micro-computed tomography (CT) is a powerful tool for definitive postmortem diagnosis of complex congenital cardiac anomalies in animals.
• Understanding these defects aids in veterinary diagnostics and research.
• CT angiography may be preferred for in-vivo diagnosis of similar conditions.