Key result
A large interatrial deposit of IgA myeloma involving the sinoatrial node caused digoxin-resistant atrial fibrillation.
This case report describes a novel presentation of IgA myeloma involving the sinoatrial node, leading to digoxin-resistant atrial fibrillation.
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May expand differential for digoxin-resistant AF to include IgA myeloma infiltration; hypothesis-generating and requires confirmation.
A case of IgA myeloma is presented in which one of the main clinical problems was digoxin-resistant atrial fibrillation. This was due to a large interatrial deposit of myeloma involving the site of the sinoatrial node. This has not previously been described.
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Atkinson et al. (1974) studied this question. A large interatrial deposit of IgA myeloma involving the sinoatrial node caused digoxin-resistant atrial fibrillation.
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