a sign of congestive heart failure
Yep.
There is no doubt about it. I saw this thousands of times during my career. She almost certainly taking heavy doses of prednisone or some other powerful synthetic corticosteroid which would explain the coughing fits. Prednisone turns your insides to mush in fairly short order. Anyone who is on it for a few years starts falling to pieces.
It is past time for Hillary to face up to the fact that she is not fit to be president. Health wise it is obvious that she is toast. Dr. Drew didn't reveal anything that any medical professional couldn't tell you by looking at those feet and ankles along with a cursory look at what we already know about her health problems. She should be sitting back and enjoying the fruits of her ill-gotten gain. My guess would be that her handlers are not only keeping her propped up but feeding her delusion that she even going to be able to finish her term. It is all about protecting the people who have made major investments through the Clinton Foundation and other illicit means so they can keep pulling the strings.