Cardiac Amyloidosis Wild Type (ATTR-CAwt) and Associated Cardiac Arrhythmias: A Case Report and Literature Review

Cardiac amyloidosis wild type (ATTR-CAwt) is often the underdiagnosed cause of heart failure with preserved ejection fraction (HFpEF) and has a high mortality rate. There is usually a long delay between the appearance of clinical signs and the diagnosis of ATTR-CAwt but a short duration between diagnosis and death. ATTR-CAwt was associated with significant clinical arrhythmias. We report a case of ATTR-CAwt, the process of its diagnosis, and the associated clinical arrhythmias and their management. We also reviewed the literature of this underdiagnosed and potentially fatal condition and the current existing therapies.