How to Measure Your Pulse Oxygen Saturation

One thing that I've very occasionally seen is venous pulsation. If a patient has terrible tricuspid regurgitation and a really low systolic blood pressure, then the venous pulsations backwards from their heart can become the dominant factor in their pulse ox waveform. It's almost like just cardiac failure more than, you know, necessarily lung failure. So hopefully this problem will go away in the near future. But, Cavid for now, like you said, is have a lower threshold to do more invasive testing. And I'm on board with that. Oh, wait. Before we move on to VBGs, can you tell me some other rare and things