Recent outcomes of surgery for chronic type B aortic dissection

Area of Science:

• Cardiovascular Surgery
• Vascular Surgery
• Thoracic Surgery

Background:

• Chronic type B aortic dissection remains a complex condition with controversial treatment options.
• The advent of stent grafts has not fully resolved optimal management strategies.
• Novel surgical techniques are being explored to improve outcomes.

Purpose of the Study:

• To analyze the results of a novel surgical strategy for chronic type B aortic dissection.
• To compare outcomes with existing literature.
• To evaluate the efficacy of left axillary artery perfusion in this patient cohort.

Main Methods:

• A cohort of 39 patients with chronic type B aortic dissection underwent graft replacement between 2004 and 2009.
• A novel technique utilized left axillary artery for perfusion inflow at approximately 23°C.
• Graft anastomosis to the distal true lumen was prioritized.

Main Results:

• Open proximal anastomosis was performed in 56% of patients.
• Grafts were anastomosed to the true lumen in 62% of cases.
• Early mortality was 3%, with low rates of permanent cerebral infarction (5%) and paraparesis (3%).
• Kaplan-Meier survival estimates were 91% at 2 years and 88% at 5 years.

Conclusions:

• The described surgical strategy demonstrates excellent short-term and midterm outcomes.
• Left axillary perfusion appears to be a safe and effective method for managing chronic type B aortic dissection.
• Further research is warranted, but this technique shows promise for patient treatment.