Great question - The threshold of 94% for blood oxygen saturation is relevant when deciding whether to administer Remdesivir in a patient with #COVID19.

We can learn A LOT about Trump’s condition by looking at the research into Remdesivir.

the study: https://jamanetwork.com/journals/jama/fullarticle/2769871
/1 https://twitter.com/jacoker2/status/1313527406196649984

“Moderate" COVID-19 *pneumonia* in the latest trial is defined as:
patchy lungs on chest Xray *or* fuzzy lungs on chest CT
AND
oxygen saturation *above* 94% on *room air*

/2

What do we mean by “patchy” lungs on chest x-ray (CXR)?

Here are examples taken from @UCLAHealth’s outstanding #COVID19 radiology guide: https://www.uclahealth.org/radiology/workfiles/pdf/UCLA-covid19-chest-radiographic-findings.pdf

/3

The key thing is that the chest X-ray findings shown are from early in the disease’s course.

The other thing to note is that, for Trump, the chest CT findings would be most obvious right around now (6-13 days).

*This* is why I want to know what the CT scan showed at WR.

/4

If we were to obtain Trump’s chest CT — and the timeline is even remotely accurate — then we would expect to see “fuzziness” on the image (aka “ground glass opacities”).

You can scroll through images from real #COVID19 cases here:
https://radiopaedia.org/cases/covid-19-pneumonia-4?lang=us

/5

Putting it all together — we know that Trump
Definitively has #COVID19 (but we’ve known that for days).
He met the criteria for “moderate” disease as of *FRIDAY*, so chest imaging (CXR +/- CT) exists
Without evidence to the contrary, dexa indicates disease progression
/end