Are CRNAs in your shop running ≤1 L/min fresh gas during maintenance since the 2023 trials showing comparable gas exchange and roughly 25–35% volatile savings? I’m looking at implementation steps — absorbent choice to limit CO/compound A risk, O2 analyzer calibration, and any policy or training updates that made the switch practical.
In our shop, low-flow stuck once we switched to Amsorb Plus and slapped a big timestamp sticker on the absorber so before going “≤1 L/min” you can confirm it’s fresh at a glance. Small caveat: we did catch FiO2 drift once from an aging O2 cell, so I still calibrate it first case of the day. Do you have a quick visual for absorbent age, @OP?
One thing that made it stick for me was a hard “leak test <[redacted]/min” rule before dropping to ≤1 L/min; if the machine doesn’t pass, I stay 1.5–2 until it’s fixed because small leaks wipe out the savings and make EtO2/agent drift. I also set a tight EtO2 low alarm so any creep is obvious once uptake settles. Do you have a standardized leak threshold, @OP?