I think the basic readings on them are reasonably accurate.
The issue is that certain finger archetypes in seniors are really hard to get a reading on. Nodular joints from arthritis or thick fingernails from clubbing make the portal devices not really read anything at all.
If you can detect any hypoxia at all in an otherwise healthy finger, it's probably real. Blood is pretty good at maintaining oxygenation even in stressful circumstances in people with normal physiology and no underling conditions.
A bigger question is what to do with the info. A reading of 95-96% in a healthy person is notable, but probably just something to keep an eye on.
Readings dipping to 90-92% probably warrant going back to the doc ASAP.
Probably left over from the rona hysteria.
I think the basic readings on them are reasonably accurate.
The issue is that certain finger archetypes in seniors are really hard to get a reading on. Nodular joints from arthritis or thick fingernails from clubbing make the portal devices not really read anything at all.
If you can detect any hypoxia at all in an otherwise healthy finger, it's probably real. Blood is pretty good at maintaining oxygenation even in stressful circumstances in people with normal physiology and no underling conditions.
A bigger question is what to do with the info. A reading of 95-96% in a healthy person is notable, but probably just something to keep an eye on.
Readings dipping to 90-92% probably warrant going back to the doc ASAP.