What is acute aortic occlusion?

• Acute occlusion in the distal abdominal aorta constitutes a medical emergency because it threatens the viability of the lower extremities; it usually results from an occlusive (saddle) embolus that almost always originates from the heart. • Diagnosis should be established rapidly by MRI， CT， or aortography. • Emergency thrombectomy or revascularization is indicated.