Valvular Hemolysis Masquerading as Prosthetic Valve Stenosis

Area of Science:

• Cardiology
• Biomedical Engineering
• Hematology

Background:

• Prosthetic valve evaluation presents unique clinical challenges.
• High transvalvular pressure gradients can indicate stenosis or other conditions.
• Starr-Edwards mechanical valves are commonly used prosthetic devices.

Observation:

• A 69-year-old male with a Starr-Edwards prosthetic aortic valve presented with heart failure symptoms.
• Elevated transvalvular pressure gradients were measured across the prosthetic valve.
• Laboratory findings suggested hemolysis, consistent with valve-related complications.

Findings:

• The patient's symptoms and elevated gradients were attributed to severe anemia.
• Resolution of anemia led to symptom improvement.
• Follow-up measurements showed a significant decrease in the transvalvular pressure gradient.

Implications:

• High-output states, such as anemia, must be considered in the differential diagnosis of elevated prosthetic valve gradients.
• Accurate diagnosis is crucial for appropriate management of prosthetic valve dysfunction.
• This case highlights the importance of a comprehensive evaluation beyond the prosthetic valve itself.