NCIt definition : Failure of the heart to pump a sufficient amount of blood to meet the needs of the
body tissues, resulting in tissue congestion and edema. Signs and symptoms include
shortness of breath, pitting edema, enlarged tender liver, engorged neck veins, and
pulmonary rales.;
Alternative definition : NCI-GLOSS: Weakness of the heart muscle that leads to a buildup of fluid in body tissues.; FDA: Inability of the heart to pump blood adequately to fill tissue metabolic requirements
or the ability to do so only at an elevated filling pressure.;