[Cardiac involvement in hemochromatosis]

Area of Science:

• Cardiology
• Genetics
• Hematology

Background:

• Hemochromatosis is a genetic disorder characterized by excessive iron absorption and storage.
• Cardiac involvement, primarily affecting the myocardium, is a significant complication leading to heart failure.
• Iron overload in myocytes reduces left ventricular distensibility, a key factor in cardiac dysfunction.

Purpose of the Study:

• To summarize the cardiac manifestations of hemochromatosis.
• To outline diagnostic approaches for cardiac involvement.
• To discuss current treatment strategies and their impact on prognosis.

Main Methods:

• Diagnosis relies on Doppler echocardiography to assess left ventricular filling and function.
• Magnetic resonance imaging (MRI) quantifies intrahepatic and intramyocardial iron levels.
• Genetic analysis helps determine mutation type, influencing symptom onset and organ involvement.

Main Results:

• Heart failure is the most common cardiac manifestation.
• Echocardiography reveals abnormal left ventricular filling and systolic dysfunction.
• MRI provides accurate quantification of iron burden in the liver and heart.

Conclusions:

• Early diagnosis and iron depletion (phlebotomy for primary, chelation for secondary hemochromatosis) are crucial for improving survival.
• Management strategies guided by recent guidelines help identify risks, stage disease, and tailor treatment.
• Reducing organ iron overload, particularly in the liver and myocardium, enhances patient outcomes.