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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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Hemolytic Anemia: Sneaky Cause, Leaky Valve.

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Summary

Severe hemolytic anemia and hyperbilirubinemia in a patient with a mechanical mitral valve prosthesis were successfully treated by re-replacement surgery. This case highlights paravalvular leaks as a rare cause of hemolysis in prosthetic heart valves.

Keywords:
anemia and hyperbilirubinemiahemolytic anemiamechanical mitral valve complicationsparavalvular leaks

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Area of Science:

  • Cardiology
  • Hematology
  • Medical Case Reports

Background:

  • Intravascular hemolysis is a recognized complication of prosthetic heart valves.
  • Severe hemolysis is uncommon (<1%) with newer mechanical valves, often linked to paravalvular leaks (PVLs).

Observation:

  • A 49-year-old female with a history of rheumatic heart disease and prior mitral valve replacements presented with fatigue, epigastric pain, nausea, and vomiting.
  • Physical examination revealed scleral icterus, and laboratory tests showed elevated total bilirubin and signs of hemolytic anemia (low hemoglobin, elevated lactate dehydrogenase, low haptoglobin, elevated reticulocyte count).
  • Transesophageal echocardiography identified a significant paravalvular leak with moderate mitral regurgitation in her mechanical mitral valve prosthesis.

Findings:

  • The patient's symptoms and laboratory findings were consistent with hemolytic anemia and hyperbilirubinemia secondary to a paravalvular leak.
  • Surgical re-replacement of the mechanical mitral valve prosthesis successfully eliminated the paravalvular leak.

Implications:

  • This case highlights the importance of considering paravalvular leaks in patients with prosthetic heart valves presenting with unexplained hemolysis and hyperbilirubinemia.
  • Timely diagnosis and surgical intervention, such as valve re-replacement, are crucial for managing severe hemolysis caused by prosthetic valve paravalvular leaks.