Congestive heart failure is a serious, chronic condition in which there is a deficiency in the heart’s ability to pump oxygen-rich blood. The condition usually occurs from a weakening of the heart over a long period of time. The first symptoms of congestive heart failure typically include fatigue, shortness of breath, or wheezing. Other noticeable symptoms include heart palpitations, swollen ankles and legs, and weight gain due to fluid build-up. This article provides in-depth information on congestive heart failure symptoms, prevention, diagnosis, treatment, and patient monitoring.