Aneurysms complicating pulmonary autograft procedure for aortic valve replacement

Area of Science:

• Cardiovascular Surgery
• Cardiac Surgery Outcomes
• Aortic Valve Repair

Background:

• The Ross procedure involves using a patient's own pulmonary valve (autograft) to replace a diseased aortic valve.
• Late complications of the Ross procedure can impact long-term outcomes.
• Aneurysm formation in the left ventricular outflow tract (LVOT) is a potential, though uncommon, late complication.

Observation:

• Two patients developed aneurysms at the proximal anastomosis of the pulmonary autograft in the LVOT.
• These aneurysms occurred late after the initial Ross procedure.
• Both cases were associated with autograft leaflet prolapse and significant aortic regurgitation.

Findings:

• Surgical repair of the LVOT aneurysms was successfully performed in both patients without immediate complications.
• No evidence of infection was found at the time of surgery.
• The study discusses potential mechanisms for aneurysm development and strategies for prevention.

Implications:

• Understanding the etiology of LVOT aneurysms post-Ross procedure is crucial for improving surgical techniques.
• This finding emphasizes the importance of long-term surveillance for patients who have undergone the Ross procedure.
• Developing preventative strategies may reduce the incidence of this serious complication.