High output heart failure as a result of an ilio-caval fistula with a negative shunt series.

Congestive heart failure (CHF) with high cardiac output is an uncommon, yet attributable result of non-hemodialysis arteriovenous malformations. While the prevalence of high output heart failure has yet to be determined, it is observably low - specifically when looking at cases of high output heart failure as a result of ruptured abdominal aortic aneurysms (AAA) with fistula formation, an entity that carries a reported incidence of <1% of all complications of AAA. In this report, we present a 64-year-old male with high output heart failure secondary to a ruptured right common iliac aneurysm causing right ilio-iliac and ilio-caval fistulas.