Causes of high-output heart failure  High-output heart failure
occurs when the normally functioning heart cannot keep up with
the dramatically increased demand for blood flow to one or more
organs in the body. Although a number of conditions can cause
the increased demand for blood and oxygen that results in high-
output heart failure, overall, high-output failure is not a
common cause of heart failure. The table below outlines the
causes.  Causes of high-output heart failure   What is it?  How
does it cause high-output heart failure?  Severe anemia Blood
contains too few oxygen-carrying red blood cells Requires the
heart to pump more blood each minute to deliver enough oxygen to
the tissues of the body Hyperthyroidism Thyroid gland produces
too much thyroid hormone Increases the body’s overall
metabolism, thus increasing the demand for blood flow
Deficiency of thiamine (vitamin B1)  Leads to increased
metabolic demand and increased need for blood flow  Last
Updated: August 25, 2008  related physicians  relat