Related Experiment Videos
Aortic valve commissural tear mimicking type A aortic dissection
Andrew C Kupersmith1, Robert N Belkin, John A McClung
1Division of Cardiology Surgery, Westchester Medical Center and New York Medical College, Valhalla, USA.
Summary
A rare aortic valve commissural tear can mimic type A aortic dissection on transesophageal echocardiography, leading to misdiagnosis. Surgical findings revealed a torn commissure, not a dissection, in a patient with severe aortic regurgitation.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Medical Imaging
Background:
- Aortic dissection is a life-threatening condition requiring prompt diagnosis and treatment.
- Transesophageal echocardiography (TEE) is a crucial imaging modality for diagnosing aortic pathologies.
- Accurate differentiation between aortic dissection and other conditions causing aortic regurgitation is critical.
Observation:
- A 52-year-old male presented with heart failure and chest pain, exhibiting severe aortic regurgitation and a dilated ascending aorta on echocardiography.
- TEE suggested a type A aortic dissection with a mobile flap, but surgery revealed no dissection.
- The actual finding was a torn commissure between the right and left aortic valve cusps, detached from the aortic wall.
Findings:
- Histopathology confirmed cystic medial necrosis of the aorta.
- The detached aortic valve commissure mimicked a dissection flap on TEE due to its motion during the cardiac cycle.
- Severe aortic regurgitation was present, attributed to the aortic valve commissural tear.
Implications:
- Aortic valve commissural tear is a rare cause of severe aortic regurgitation.
- This condition can lead to false-positive diagnoses of type A aortic dissection on TEE.
- Awareness of this rare entity is essential for accurate echocardiographic interpretation and appropriate clinical management.