Re: 2/9 FRED AM=250 (.8);+6=92
Fred has had some really nice cycles the last couple days! Pre-shot numbers can be affected by a lot of things. Sometimes the insulin has worn off by the time pre-shot rolls around, so the number will basically reflect Fred's BG with no insulin, sometimes a lower pre-shot number reflects that the insulin from the last shot is still at work, and sometimes a higher than normal pre-shot number reflects a "bounce."
I can only echo what Sue said about bounces. There really isn't a "percentage." It's definitely an ECID thing.
Knowing the physiology behind a bounce can help you recognize them. Basically, a lower BG number than Fred is used to can trigger his liver and pancreas to release glucose and counter-regulatory hormones into his system. A huge blast up after a low number, in my view, reflects when the liver has dumped a bunch of glucose into the system, which reads the same way as regular glucose on your meter. The counter-regulatory hormones that are released, from what I've read, have the effect of basically making the next dose of insulin less effective - basically the hormones can produce some insulin resistance as a "protective measure." This can be reflected as a high flat cycle after a low number the previous cycle. For Eddie, he has bouncy pre-shot numbers occasionally, but he also has cycles where he stays higher than normal during the cycle, and in my opinion, that's the result of some circulating counter-regulatory hormones.
Assuming that your cat isn't going below 50 at nadir, bounces can pretty much be ignored. Bounces can be a warning that numbers are going too low, but they can also be the result of "unwarranted" liver panic, meaning that the body reacts to numbers that are not too low. That said, there are some cats that do better with the dose slightly reduced if the swings are really dramatic.
In Fred's case, it looks like lately, he's bouncing far less than he was. His pre-shots and his nadirs are looking really great the last few cycles! I wouldn't change a thing that you're doing for now.
