alexa Postpartum onset of acute heart failure possibly due to postpartum autoimmune myocarditis. A report of three cases.
Pathology

Pathology

Journal of Medical & Surgical Pathology

Author(s): Yagoro A, Tada H, Hidaka Y, Ohnishi Y, Nagata S,

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Abstract Autoimmune diseases, especially autoimmune thyroid disease, frequently develop after delivery due to the immune rebound mechanism. Most cases have transient dysfunction of affected organs. Cardiac dysfunction developed after delivery is called postpartum or peripartum cardiomyopathy. However, the aetiology of the disease is not clarified yet. Here we report three cases that developed acute heart failure in the postpartum period. One was complicated with an atrioventricular block and postpartum autoimmune thyroiditis. All patients recovered to normal cardiac function or pre-attack condition after 1 month of therapy with conventional drugs and bed rest. All three had positive antiheart antibody detected by indirect immunofluorescence assay, and one had antibody to heart myosin detected by enzyme-linked immunosorbent assay. Moreover, one of two patients examined revealed lymphocytic infiltration by endomyocardial biopsy. Antibodies to 26 viruses were not elevated significantly during the first 2 weeks after admission in any case. It is strongly suggested that heart failure is induced by postpartum autoimmune myocarditis, and thus clinicians should be aware of this disease.
This article was published in J Intern Med and referenced in Journal of Medical & Surgical Pathology

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