Cardiovascular Features of 11 Patients with Eosinophilic Endomyocardial Disease

This report describes the clinical features, cardiac investigations and treatment of eleven patients with biventricular eosinophilic endomyocardial disease, who were followed up for a mean of 3.2 years. Three patients died. Five patients presented with heart disease and hypereosinophilia. Six other patients presented with hypereosinophilia and developed cardiac disease later. Histological studies showed early acute necrotic lesions in five patients, later thrombotic lesions in one and late fibrotic lesions in three patients. Endomyocardial biopsy was the method of choice for diagnosing early acute necrotic and thrombotic lesions. Late fibrotic lesions were best shown by amplitude processed 2D echocardiography and angiocardiography. Episodes of heart failure responded well to treatment with prednisolone which appeared to inhibit progression of heart disease in two patients. Three patients with severe ventricular disease and valvular regurgitation responded well to surgical treatment. This longitudinal study has shown that eosinophilic endomyocardial disease can now be investigated and treated effectively at each stage from early sub-clinical lesions to late incapacitating endomyocardial fibrosis.