It’s called a PulseOx, and yes it’s quite handy!
You can see what Trump’s treatment was in my post #7 on this thread.
As you can see, he received monoclonal antibodies, which really did work like a charm but not yet available to us “little people” and he seemed to give the most credit to this element of his treatment. I recall him saying it was “like a miracle” in one interview.
Also see:
https://www.cnn.com/2020/10/10/health/trump-coronavirus-fox-doctor-interview/index.html
My take on ivermectin with and without zinc here, FWIW
https://freerepublic.com/focus/chat/4142674/posts?page=28#28
Oops, sorry. I didn’t realize this was another Remdesevir thread. My #7 here:
https://freerepublic.com/focus/f-bloggers/4171594/posts?page=7#7