Our topic for today: diagnosis using a broad constellation of indicators, not a single red flag.
To mix things up, rather than read about it, let’s talk about it.
http://www.youtube.com/watch?v=3pHAulBvZ48
Here’s the quote I mentioned, from TOTWTYTR at the CCC blog.

I love your stuff, Brandon.
The only thing I think pulse oximetry is even marginally good for is to evaluate the effect of interventions- do things get better?
The more I learn about it, the more interesting I find capnography, as a much better tool.
Even so, you’re right that a poor general impression trumps most anything.