High-Output Heart Failure High-output heart failure happens when
the body's need for blood is unusually high, so heart failure
symptoms happen even though the heart is working well. This type
of heart failure happens to a very small number of people with
heart failure. What happens to the heart? High-output heart
failure occurs when the normally functioning heart cannot keep
up with an unusually high demand for blood to one or more organs
in the body. The heart may be working well otherwise, but it
cannot pump out enough blood to keep up with this extra need.
What causes it? There are a variety of conditions that can
significantly increase the body's need for blood and oxygen,
resulting in high-output heart failure. These conditions include
anemia, hyperthyroidism, and pregnancy. Although the causes of
high-output heart failure are different from the cause of other
types of heart failure, the end result is the same: Your heart
isn't supplying enough blood to meet your body's needs. High-
output heart failure r