. Well, I have your answer. Congestive heart failure (CHF) is a condition in which the heart’s function as a pump is inadequate to meet the body’s needs. A poor blood supply resulting from CHF may cause the body’s organ systems to fail. When the heart’s pumping action is inadequate as a result of CHF, the blood “backs up” (becomes congested) behind the heart. This congestion can lead to fluid accumulation in the lungs and body tissues. CHF is a grouping of clinical findings rather than a specific diagnosis or a single disease. CHF can be considered a symptom of impairment of the pumping action of the heart that is caused by an underlying disease. CHF can be broadly divided into categories depending on the underlying heart condition present. The strength (forward pumping function) of the heart may be impaired (so called systolic dysfunction) due to illnesses that cause heart muscle weakness or the ability of the heart to relax and fill may be impaired. Additionally, in some cases, although the pumping action of the heart may be intact, other factors due to abnormal demands by the body’s tissues may make it difficult for the heart to supply an adequate blood flow (called high output heart failure).
This is a 3D medical animation that describes and shows the causes of congestive heart failure.