Early onset of prosthesis failure after aortic valve replacement

Area of Science:

• Cardiology
• Cardiac Surgery
• Biomedical Engineering

Background:

• Aortic stenosis is a common valvular heart disease requiring valve replacement.
• Tissue valves, such as porcine valves, are frequently used for aortic valve replacement.
• Early prosthetic valve dysfunction can lead to significant morbidity and mortality.

Observation:

• A 78-year-old male patient underwent aortic valve replacement with a 21 mm Labcor tissue porcine aortic valve.
• Postoperatively, the patient had an uncomplicated course for 3 months.
• Transthoracic echocardiography revealed restrictive motion of the non-coronary cusp, incomplete coaptation, and severe aortic regurgitation.

Findings:

• The Labcor tissue porcine aortic valve demonstrated early structural dysfunction.
• The observed dysfunction led to severe aortic regurgitation, necessitating reoperation.
• Exploitation of the prosthetic valve and implantation of an alternative model were performed.

Implications:

• This case highlights the potential for early structural valve deterioration in tissue prostheses.
• It underscores the importance of vigilant echocardiographic monitoring after aortic valve replacement.
• Further research into the long-term durability and failure modes of specific tissue valve models is warranted.