[apple1417]

>> the Tandem tslim X2 requires the user to "prime" the pump tubing with 10 units of insulin every time the pump shuts down or the cartridge is replaced.

> This happens with every pump in one way or another to avoid getting air instead of insulin

The tandem doesn't allow you to finish priming before it's used 10u. Even if you know it's fine, and can see drops of insulin coming out immediately, you've got to wait until it reaches 10u first. I took the author's complaint to be more about that.

I've only had my battery die a couple of times, and I use a fresh line every cartridge, so I've only found it mildy annoying. If you're American and often reusing them, I could see it being more grating.

[jrflowers]

I guess if somebody is on humalog and is swapping out cartridges every 48 hours like the manufacturer suggests that could be a bit annoying. If somebody is on novolog (and takes less than a hundred units/day) it’s generally pretty easy to match cartridge duration to infusion set duration 1:1, in which case that 10u of wasted insulin gets thrown away when you discard your infusion set, just like any other pump with tubing.