3 ms·
This device monitors pressure needed to cause transient digital arteriolar occlusion using MEMs sensors. It then uses an algorithm that uses this data along wit
by Ice_cream_suit 6y ago
This device monitors pressure needed to cause transient digital arteriolar occlusion using MEMs sensors.
It then uses an algorithm that uses this data along with pulse oximetry data to estimate the brachial arterial blood pressure.
In situations where it actually matters ( patients with abnormally low or high BP, patients with low peripheral perfusion, patients with peripheral vasoconstriction, critically ill patients ) this will be measuring something with little or no correlation with the brachial BP.
Theranos made similar promises...
- thaeli 6y agoI can't tell for sure from this article, but is this still doing an oscillatory method measurement of MAP?
- oliwarner 6y agoExactly my thoughts. It'll work well in well people, and mild outliers, but it's probably [harmful] junk for anybody with any serious conditions. I guess it might have value if you calibrate it against a good measurement in both arms and then only compare it to historical measurements with the same device. That's to say, it can show you change, which isn't unimportant.
- CapriciousCptl 6y agoOh! Skepticism is good. And this type of tech is very good for goal-directed management of fluid resuscitation! Severe peripheral vasoconstriction, not so much, as you mentioned. Really, in my first-hand experience most clinicians use the tech to follow trends in the ICU or surgery. I wouldn't call the claims Theranos-level, but at the same time I don't see how this is any more useful for the general population than the standard automated blood pressure cuffs. Maybe that will change as things evolve! This article has a nice review of the history-- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312947/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312947/.