Treatment for Aortic Dissection Extending to the Left Lower Extremity

Classification and Initial Assessment

• The European Society of Cardiology recommends classifying aortic dissections using either the Stanford or DeBakey system, with Stanford Type A involving the ascending aorta and requiring immediate surgery, and Stanford Type B not involving the ascending aorta and requiring medical management for uncomplicated cases and intervention for complicated cases 3, 4
• Aortic dissection extending to the lower extremity represents a malperfusion syndrome requiring urgent intervention, according to the European Heart Journal 1, 2
• Initial assessment should include ECG-gated CT angiography from neck to pelvis to evaluate the extent of dissection and identify complications, as recommended by medical guidelines 5

Management Based on Dissection Type

Type A Dissection with Lower Extremity Malperfusion

• Immediate aortic surgery is recommended as the primary intervention for Type A dissection with lower extremity malperfusion, as stated by the European Heart Journal 1, 6
• Direct admission to a hybrid operating room with an onsite aortic team is recommended for Type A dissection with lower extremity malperfusion, according to the European Heart Journal 2
• Consider invasive diagnostics and/or percutaneous malperfusion repair before or after aortic surgery for Type A dissection with lower extremity malperfusion, as recommended by the European Heart Journal 1, 2

Type B Dissection with Lower Extremity Malperfusion

• TEVAR or EVAR with or without percutaneous malperfusion repair is the first-line treatment for complicated Type B dissection, as stated by the European Heart Journal 1, 2
• If malperfusion persists after TEVAR/EVAR, perform angiographic control and/or additional percutaneous malperfusion repair, as recommended by the European Heart Journal 2

Medical Management

• Administer intravenous beta-blockers as first-line therapy for aortic dissection, with a target heart rate ≤60 beats per minute and systolic blood pressure between 100-120 mmHg, as recommended by medical guidelines 8
• If beta-blockers are contraindicated, non-dihydropyridine calcium channel blockers should be considered, according to the European Heart Journal 6

Post-Intervention Management

• Regular imaging follow-up is recommended to monitor for complications such as false lumen expansion or aneurysm formation, as stated by medical guidelines 8
• Target long-term blood pressure <135/80 mmHg, as recommended by medical guidelines 8