This reminds me of a great interview with two ER doctors on Amanpour (PBS) two weeks ago. Pulse oximeters can be used to help detect which patients need hospitalization before they themselves notice, with astounding results.

I really recommend the episode: https://www.pbs.org/wnet/amanpour-and-company/video/how-earl...

Here's another article on a hospital implementing the early monitoring program https://www.nny360.com/news/publicservicenews/samaritan-util....

> With the oximeter, Samaritan is asking patients to keep track of its measurements twice a day and to write the readings down. Then Home Health follows up with telehealth visits, either over the phone or via Zoom on days two and four, as well as days seven and 10.