High-output heart failure occurs when the normally functioning heart cannot keep up with the dramatically increased demand for blood flow by one or more organs, usually peripheral tissues, in the body. There are number of conditions can cause the increased demand for blood and oxygen that result in high-output heart failure.

The high-output failure overall is not a common cause of heart failure.
There are many reasons of high output heart failure. These include severe anemia, Hyperthyroidism, Arteriovenous fistula, Beriberi and Paget’s disease. All these problems create the reasons to create the demand of more blood supply by the peripheral tissues exceeding the level and capacity of the heart to supply.

The treatment of high output heart failure depends on the cause. The careful diagnoses are made before to start treatment.