Answer:
CHF or Congestive heart failure is defined as a chronic condition in which fluid builds up around the heart and causes it to pump inefficiently. this affects the pumping power of heart muscles. CHF arises when ventricles are unable to pump enough blood volume to body, then blood fills back to lungs, liver, abdomen or other lower body parts.
Most common cause of CHF can be hypertension, valve conditions and coronary artery disease. It can be treated by angiotensin-converting enzyme inhibitors (ACE inhibitors).
Pulmonary edema is defined as a condition in which fluid collects in the air sacs in lungs that makes breathing difficult due to excess fluid in the lungs. One of the cause of Pulmonary edema can be CHF (Congestive heart failure).