heart failure

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Cessation of normal heart function.
• noun A condition marked by congestion in the lungs, shortness of breath, edema in the lower extremities, and enlargement of the liver, caused by the inability of the heart to pump blood at an adequate rate to the peripheral tissues and the lungs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun cardiology, pathology The chronic inability of the heart to pump a sufficient amount of blood throughout the body, leading to a pooling of blood and shortness of breath.
• noun cardiology, pathology The cessation of the heartbeat; cardiac arrest.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun inability of the heart to pump enough blood to sustain normal bodily functions