What is Congestive Heart Failure? Congestive heart failure (CHF), sometimes called congestive cardiac failure, occurs when the heart muscle is unable to pump strongly enough to supply blood to the rest of the body. CHF causes blood to back up in the lungs and other parts of the body. This is why it is also called congestive heart failure -- it means the heart becomes too congested or... https://logcla.com/blogs/535125/Congestive-Heart-Failure-Symptoms-Causes-Diagnosis-and-Treatment-Options