As a beginner in medical sciences I found a fact that was seemingly interesting to me.
When I was doing some simulations with patient monitors and advanced cardiac life support cases, I found that the way form between post oximetry PLETH and a BP waveforms looks surprisingly similar.
I understand that post oximetry is a representation of blood flow over peripheral limbs, however its almost exact representation of ABP waveforms got me thinking if dynamic blood pressure can be achieved by monitoring SPO2 only, rather than invasive monitoring which may cause a amount of discomfort.
I tried searching on the Internet, but found no devices articles whatever documenting using SPO2 to measure blood pressure. Are there actually limitations which caused this hypothetical technology to not work, or is it under development in someway where is the evidence of such development, should it exist, was not discovered by me.
I would appreciate any information.