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[Truncus arteriosus communis and interrupted aortic arch]
Insights
Persistent truncus arteriosus and interrupted aortic arch is a rare congenital heart defect. Early diagnosis via echocardiography is crucial for managing heart failure and cyanosis in affected infants.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease
- Medical Imaging in Pediatrics
Background:
- Persistent truncus arteriosus (PTA) and interrupted aortic arch (IAA) are rare congenital cardiac malformations.
- This combined condition presents unique clinical and therapeutic challenges.
Observation:
- This study presents three cases of PTA with IAA.
- Clinical presentation includes symptoms similar to isolated PTA, such as heart failure and cyanosis from birth.
- Physical findings may include a protosystolic click and ejection murmur, with cardiac enlargement and biventricular hypertrophy.
Findings:
- Asymmetric pulses in upper and lower limbs suggest IAA, but this is only evident when the arterial duct is restrictive.
- Echocardiography is the primary diagnostic tool, with angiography serving a secondary role.
- Analysis includes echocardiographic findings and angiocardiographic anatomy.
Implications:
- Accurate diagnosis through echocardiography and angiography is vital for effective management.
- Understanding the pathophysiology is essential for guiding therapeutic strategies.
- Early identification and intervention can improve outcomes for infants with this complex defect.
Abstract:
The association between persistent truncus arteriosus and interrupted aortic arch is a rare but important condition since it has special clinical and therapeutic implications. In this article we present three cases with this malformation. The clinical characteristics are similar to patients with isolated truncus such as heart failure and cyanosis since birth, a protosystolic click, an ejection murmur over the left parasternal line, heart enlargement, increased pulmonary vascular markings and biventricular hypertrophy. The clinical suspicion of interrupted aortic arch is bases on the presence of asymmetric pulses in the upper and lower limbs, but this difference is present only when the arterial duct is restrictive. Because of that, the echocardiographic analysis, mainly, and the angiocardiogram, secondarily, are very important diagnostic tools. We analyze the echocardiographic diagnostic findings, as well as the angiocardiographic anatomy. Also, some important pathophysiological aspects are discussed.