Isolated atrial amyloidosis

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| specialty = cardiology

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Isolated atrial amyloidosis is a form of amyloidosis affecting the atria of the heart.{{cn|date=October 2021}}

It is associated with accumulation of the protein atrial natriuretic factor.{{cite book|author1=Eric J. Topol|author2=Robert M. Califf|title=Textbook of cardiovascular medicine|url=https://books.google.com/books?id=35zSLWyEWbcC&pg=PA433|accessdate=17 November 2010|year=2007|publisher=Lippincott Williams & Wilkins|isbn=978-0-7817-7012-5|pages=433–}} It may cause abnormal heart rhythms.