Cardiac involvement in hypereosinophilia

Area of Science:

• Cardiology
• Hematology

Background:

• Hypereosinophilia can lead to rare cardiac abnormalities, often triggered by allergies or infections.
• Cardiac involvement progresses through three stages: inflammation, thrombosis, and irreversible endomyocardial fibrosis, a cause of restrictive cardiomyopathy.

Purpose of the Study:

• To summarize the pathophysiology, diagnosis, and management of cardiac abnormalities in hypereosinophilia.
• To highlight the importance of identifying the underlying cause for effective treatment.

Main Methods:

• Review of literature on hypereosinophilic cardiac disease.
• Discussion of diagnostic tools including echocardiography, cardiac MRI, PET-CT, and endomyocardial biopsy.
• Emphasis on blood eosinophil counts, though not always elevated initially.

Main Results:

• Cardiac involvement in hypereosinophilia is characterized by distinct stages.
• Diagnosis relies on a combination of clinical presentation, imaging, and biopsy.
• Elevated eosinophil levels are common but may be absent in early disease.

Conclusions:

• Early diagnosis and identification of the cause of hypereosinophilia are essential for managing cardiac complications.
• Treatment strategies depend on the underlying etiology of hypereosinophilia.