By this point my memory is more ambiguous than not about whether I have ever used R with a pump. I am pretty sure I either did this when I started or that at some point I failed to get a script and ended up buying R over the counter & using it to tide myself over.
Whatever the reason for it, I do have a … belief (?) that R in a pump is not as bad as we all seem to fear these days. I keep wondering, how bad could it be? I’m half tempted to spin off a separate thread asking about this to see if anyone else has clearer memories than I do.
I would expect the biggest problem with R would be that the boluses would be frustratingly wonky. It takes longer to begin to take effect and persists longer than the analogs. But if you have a CGM and patience, you could pre-bolus and stay on top of your BG that way.
I think one could do “well enough”. Certainly people did use it in pumps before the faster versions were available, no?
Basal would also, of course, need watching especially at the beginning. But I am not sure how noticeable the difference between faster insulin and R would be for doses a fraction of a tenth of a unit which a pump’s basal is delivered in these days.
I would also expect there would be a “pipeline” effect for basal. There might be a noticeable lag at first, but once the initial basal delivery started infusing, any delivery lag should be diminished for the rest of the basal. Aside from possible delivery rate changes, basal with R might not be that different from “whatever-log”? Maybe? Perhaps?
A part of me actually wants to try it so I can find out.
<sigh /> How crazy is that, eh?