Fiasp.. yay or nae

[helli]

No you can't! - any bolus or correction dose, goes in immediately. Only the basal dose drips into you bit by bit.

Once the dose has been given, as you say, it there and active. However, most pumps allow you to spread a bolus over a longer period of time. Different pump manufacturers seem to call it different things like "square wave", "combo" or "extended".
The challenge is deciding when you dose the duration and ratio of the bolus.

 

[Type1derful]

Oh really I thought I would still be able to do something to prevent hypo if I couldn’t get to my break in time !

 

[helli]

Oh really I thought I would still be able to do something to prevent hypo if I couldn’t get to my break in time !

This *may* be possible by suspending your basal.
But, like with the bolus (which is the same insulin), once the basal has been dosed, it cannot be taken out.
For example, if you find you need to pre-bolus 30 minutes before eating, suspending your basal 30 minutes before a hypo is predicted could ward it off.
I only basal suspension to avoid hypos if my Libre shows my blood sugars falling fast and is under 5.5mmol/l. This only works for me if I have little or no "bolus on board". It would be of no use if my lunch break was delayed after I had bolused for it.

So, back to the original topic of this thread - Fiasp - the speed at which is starts reacting allows you to pre-bolus a shorter time before eating.

There is/soon will be an alternative to Fiasp - Ultra Rapid Lispro (URLi) from Lispo. I am not sure if it is approved in the UK yet.

Have you thought about dealing with the potentially postponed breaks a different way - by dosing later and eating food which absorbs slower such as something higher in fat and/or lower in carbs?

(FYI, I often use the basal suspend function before doing rigorous cardio exercise so I really have no insulin on board when exercising.)

 

[Type1derful]

Ok thanks for the info. I haven’t really I tend to either have to bolus just before I eat and deal with a spike. I may try this method and see how I get on. Interesting about the exercise as it’s something that I struggle with getting the right balance with

 

[Pumper_Sue]

@Type1derful may I suggest you invest in the pumpers Bible (pumping insulin by John Walsh) it can be found on amazon and will be the best investment you will ever make.

 

[Type1derful]

Thank you il have a look into it 🙂

 

[Greys]

Because I was spiking despite pre bolusing with Humalog, particularly breakfast and lunch, I'm quite happily switching to Fiasp via pens. I'll report on any pros and cons as soon as I've acclimatised. I would have thought it was fairly pointless in a pump, as a fast acting basal is a daft concept.

Hi, yes I'm exactly the same. I've been using freestyle libre for a week and it showed spiking after breakfast and lunch so I was advised to try Fiask. I started it today so I am hoping it will help with the spiking and reduce my hbac1.