Heart failure is a condition caused by the heart failing to pump enough blood around the body at the right pressure :
It usually occurs because the heart muscle has become too weak or stiff to work properly.
If you have heart failure, it does not mean your heart is about to stop working. It means your heart needs some support to do its job, usually in the form of medicines.
Breathlessness, feeling very tired and ankle swelling are the main symptoms of heart failure. But all of these symptoms can have other causes, only some of which are serious.
Dr Atul Chowdhury