Well, I just tried my first Sof-Set QR set, 6mm, sans inserter since it was a sample, and got my first confirmed bent cannula! After an evening with this thing in, I just couldn’t come down, was awake all night (being high keeps me awake), bolused myself several times and I had worked my way up to over 400 and rising! What the heck?
So I gave myself a couple of needle injections and removed the set, and what do you know, the cannula was bent at over a 90 degree angle, and looked like it had been inserted probably not more than 3mm. Son-of-a-biscuit…
So here’s my confusion - why DIDN’T I get a no delivery alarm? I had attempted to bolus over 30 units (kept giving myself corrections and hoping they’d kick in) over the course of 7 hours, and never received any indication of a delivery problem, only figuring this out because no matter how much I bolused myself, I was going up, not down, after not having eaten anything in many hours, and taking too much insulin for it to be plausibly working normally.
Is it normal not to get a No Delivery alarm sometimes when you have a badly bent cannula? Was the thing delivering insulin into my skin and therefore not blocked, or what? (There was nothing on the surface of the skin or under the tape, so where did the 40 units of bolus + basal over 8 hours go?)