Had some surprise CE today in the ED when a patient came in SOB and 77% "on oxygen", supposedly 2L. Get him back, 6L puts him at 98% within a minute. Scaled it down and found 2L is a good fit.
But wait. That's how we started. No, apparently he was set to 2L "pulsed", which I read releases a puff of O2 a fraction of a second after inspiration. Surely there is a difference in pulsed vs. continous because of the physiology behind passive oxygenation.
So, 2 questions.
1. I read ads for these regulators and they brag about their numbers and being better, but do not explain pulsed vs continous. How can they do that..?
2. How does the device work, releasing on inspiration? Is it pressure change? If so, where is that detected?
Just curious. Thanks guys!
But wait. That's how we started. No, apparently he was set to 2L "pulsed", which I read releases a puff of O2 a fraction of a second after inspiration. Surely there is a difference in pulsed vs. continous because of the physiology behind passive oxygenation.
So, 2 questions.
1. I read ads for these regulators and they brag about their numbers and being better, but do not explain pulsed vs continous. How can they do that..?
2. How does the device work, releasing on inspiration? Is it pressure change? If so, where is that detected?
Just curious. Thanks guys!