Isolated atrial amyloidosis is a condition where abnormal proteins, known as amyloid, build up in the walls of the heart's upper chambers. This can cause issues with heart function such as arrhythmias and heart failure. Synonyms for isolated atrial amyloidosis include atrial amyloidosis, amyloid heart disease, and cardiac amyloidosis. These terms all refer to the same condition and can be used interchangeably. It is important for doctors and patients to be familiar with these synonyms as early diagnosis and treatment of isolated atrial amyloidosis can help prevent further damage to the heart and improve quality of life.