Autograft Root Dilation After the Ross Procedure Is Not Benign

Area of Science:

• Cardiovascular Surgery
• Aortic Valve Disease
• Biomaterials Science

Background:

• Autograft root dilation is a frequent complication following the unsupported Ross procedure.
• Expectant management is common for autograft aneurysms without valvar incompetence, assuming dissection is rare.
• Bicuspid aortic valves are linked to pulmonary arteriopathy, potentially increasing autograft dilation and dissection risk.

Purpose of the Study:

• To evaluate the incidence and implications of autograft root dilation and dissection after the Ross procedure.
• To assess the role of bicuspid aortic valves in autograft complications.
• To inform management strategies for unsupported Ross autografts.

Main Methods:

• Review of accrued case reports detailing autograft dissection requiring urgent intervention.
• Analysis of the association between bicuspid aortic valves and autograft complications.
• Evaluation of existing evidence on external support for Ross autografts.

Main Results:

• Seven case reports of autograft dissection requiring urgent surgery have emerged, all in patients with bicuspid aortic valves.
• Autograft root dilation is not benign, particularly in patients with bicuspid aortic valves.
• Histologically demonstrated pulmonary arteriopathy in bicuspid aortic valves may contribute to dilation and dissection.

Conclusions:

• Autograft dissection may be more common than previously perceived, especially in bicuspid aortic valve patients.
• External support for Ross autografts is increasingly validated by mounting evidence.
• Earlier intervention for autograft root dilation and aneurysm in unsupported Ross procedures may be warranted.