Hi. So I'm in the hospital for the first time and I asked the resp lady if she was going to have me do a walking oximetry or arterial blood gas. She said they don't really do the abg anymore, that it's been replaced basically by newer breathing tests or diagnostics. Is that true? I also haven't done a walking oximetry, although I've done plenty of inhaling & exhaling into measuring devices.

Should I be making a noise about these tests?
If applicable, what about the abg can't be replaced by other respiration tests?

Thanks, you guys.
This board offers so much support & information. I sure am thankful you're here.