Which condition occurs when the heart cannot pump all the blood returning to it, leading to blood backup?

Congestive heart failure (CHF) occurs when the heart's ability to pump blood is compromised. This condition is characterized by the heart not being able to meet the body's demands for blood flow, leading to a subsequent backup of blood in the veins. In CHF, the heart struggles to effectively pump all the blood returning to it, which can result in fluid accumulation in the lungs, liver, and other tissues. The symptoms of this condition often include shortness of breath, extreme fatigue, and swelling in the extremities.

The other conditions listed do not directly describe the scenario of blood backup due to the heart's inability to pump effectively. Coronary artery disease refers to the narrowing or blockage of coronary arteries due to plaque buildup, which can lead to heart complications, but it does not describe the specific failure of the heart's pumping ability. Coronary occlusion can lead to a heart attack by blocking blood flow to the heart muscle, but it does not encompass the larger systemic issue of heart failure and blood backup. A coronary artery anomaly refers to an abnormality in the structure of the coronary arteries, which can lead to its own complications but is not the same as the failure to pump blood effectively. Thus, CHF is the accurate term for the condition where