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- 4,685
- Type of diabetes
- Type 1
- Treatment type
- Pump
On the Vibe you can only have one Combo ("wave"/"extended") bolus running at once. This is a pain if you eat something else that requires an extended bolus, while the first extended bolus is still running.
As an approximation, what you can do is cancel the running extended bolus, after taking a note of the amount remaining. You then start a new extended bolus, calculate the new amount required, then add on the amount remaining from the previous extended bolus. In theory you can repeat this "rollover" process indefinitely. OK it's not pinpoint accurate but it's close enough for horseshoes and glucose meters. (Note - so far we are not at the "Stupid Pump Trick" stage).
In the Vibe you can get the amount of extended bolus remaining by going to the Combo Bolus menu screen. If an extended bolus is running, instead of getting an option to bolus, you get a status display on the currently running extended bolus.
The status screen looks something like this:
Crystal clear right? Not really. The left hand number is the amount delivered, but is the right hand number the amount remaining or the total amount that was to be delivered? To me the colon says "remaining", somehow, where a slash (/), or the word "of", would say "of". Anyway turns out I got it wrong and the amount on the right is not the amount remaining, it is the total original amount ("of"). Hence the Stupid Pump Trick - you can see that this type of rollover, using the wrong quantity, is NOT repeatable indefinitely, and builds up a bigger and bigger extended bolus dose with every rollover. I did this three times in a row and I got a hypo for my troubles.
Incidentally there is another way to check the extended bolus quantity remaining on the Vibe, which is to go to the History menu. This is a few more steps and doesn't allow you to proceed directly to Cancel and then enter the new extended bolus, but it does quite clearly say "of". What a difference one or two characters can make eh? Luckily we had teams of FDA assessors teeming over every screen for years in order to declare the Vibe safe as a consumer medical appliance... :-/
As an approximation, what you can do is cancel the running extended bolus, after taking a note of the amount remaining. You then start a new extended bolus, calculate the new amount required, then add on the amount remaining from the previous extended bolus. In theory you can repeat this "rollover" process indefinitely. OK it's not pinpoint accurate but it's close enough for horseshoes and glucose meters. (Note - so far we are not at the "Stupid Pump Trick" stage).
In the Vibe you can get the amount of extended bolus remaining by going to the Combo Bolus menu screen. If an extended bolus is running, instead of getting an option to bolus, you get a status display on the currently running extended bolus.
The status screen looks something like this:
Delivered
0.30u: 0.45u
0.30u: 0.45u
Crystal clear right? Not really. The left hand number is the amount delivered, but is the right hand number the amount remaining or the total amount that was to be delivered? To me the colon says "remaining", somehow, where a slash (/), or the word "of", would say "of". Anyway turns out I got it wrong and the amount on the right is not the amount remaining, it is the total original amount ("of"). Hence the Stupid Pump Trick - you can see that this type of rollover, using the wrong quantity, is NOT repeatable indefinitely, and builds up a bigger and bigger extended bolus dose with every rollover. I did this three times in a row and I got a hypo for my troubles.
Incidentally there is another way to check the extended bolus quantity remaining on the Vibe, which is to go to the History menu. This is a few more steps and doesn't allow you to proceed directly to Cancel and then enter the new extended bolus, but it does quite clearly say "of". What a difference one or two characters can make eh? Luckily we had teams of FDA assessors teeming over every screen for years in order to declare the Vibe safe as a consumer medical appliance... :-/