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Paradoxical embolism and aortic occlusion: a case report
Summary
A woman experienced arterial embolism, requiring multiple surgeries. Diagnosis revealed a heart defect and leg deep vein thrombosis, highlighting the risk of paradoxical embolization in unexplained arterial occlusions.
Area of Science:
- Vascular Surgery
- Cardiology
- Radiology
Background:
- Arterial embolism can lead to severe limb ischemia and systemic complications.
- Popliteal artery embolism is a significant cause of acute limb ischemia.
- Unexplained arterial occlusions warrant investigation into potential paradoxical embolism.
Observation:
- A 45-year-old woman presented with left popliteal artery embolism, treated with embolectomy.
- Ten days post-procedure, she developed acute distal aortic occlusion, requiring bifemoral embolectomy.
- Diagnostic imaging revealed an atrial septal aneurysm and defect with a right-to-left shunt, alongside deep venous thrombosis in the right leg.
Findings:
- The patient's atrial septal defect facilitated paradoxical embolization, where venous thrombi bypassed the lungs to enter systemic arterial circulation.
- Deep venous thrombosis in the right leg was identified as the likely source of the emboli.
- The combination of a cardiac septal defect and venous thrombosis created a pathway for recurrent arterial occlusion.
Implications:
- This case underscores the critical need to consider paradoxical embolism in unexplained arterial occlusive events, particularly in younger individuals.
- Identifying and managing underlying conditions like atrial septal defects and deep venous thrombosis is crucial for preventing recurrent embolic phenomena.
- Enhanced diagnostic strategies, including echocardiography and venography, are vital for elucidating the etiology of paradoxical embolization.