early preview of the MiniMed 640G insulin pump, I have been invited by the fine folks at Medtronic to spend 64 days with their new box of tricks, and to share my experiences through the slightly scary and unfamiliar medium of video blogging.
It's what all the cool kids are up to (apparently).
For this first installment I have tried to do a little compare and contrast between the Medtronic Veo and the new MiniMed 640G. Just a few things that have struck me during my first couple of weeks of use really. I'm not yet going to mention Smartguard and compare that feature to the Veo's Low Glucose Suspend, partly because I think that Smartguard deserves a vlog all of its own, but mostly because I have never used sensors with my Veo so have nothing to usefully compare.
I am hoping to post a video every week or so over the 64 day period, but I have quickly come to realise that this video blogging lark is nothing like as easy as everyone makes it look, so you may have to bear with me on timings. I'll announce any new episodes here and on Twitter, naturally, but if you are really keen I suppose you could always subscribe to what is now laughably described as my YouTube Channel.
In the meantime you can find some more, rather more coherent information on the MiniMed 640G here.
And please do check out the video blogs of other MM640G users too.
Leave any comments or questions here or on YouTube and I'll do my best to answer them.
Watch this video on YouTube.
Posted by Mike K on Friday, 3 July 2015
Posted by Mike K on Thursday, 4 June 2015
|My diabetes, yesterday.|
They reminded me more than a little of my diabetes.
Except that my diabetes doesn't often wear a little wooden backpack-style platform of Orcs throwing rocks. Although some days...
I think it was the thick-headed stagger of them that made me draw the comparison. The turgid movement. The stupidity and utter disregard for anyone or anything around them. Yup, my diabetes can be all of those things. Slow, stubborn and very hard to work around.
The heroes of the film, by contrast, are tiny, fleet of foot and scamper around very nimbly. Dancing and chasing in and out, between legs and around corners, while the grunting Diabetes Troll laboriously lifts its impossibly-heavy hammer for another ill-aimed swipe.
But there is obvious peril here. Running rings around the hapless troll is all very well, but unless you keep your wits about you, and ideally keep your distance from the 'complications' hammer sooner or later you run the risk of getting squashed.
Mercifully, diabetes complications are pretty slow moving for the most part. And an occasional out-of-range reading here or there does not necessarily mean that our kidneys pack up immediately or our eyes are instantly fried [Good job too looking at my BG results this week!]. But there is a danger in that. It is all too easy to become a little complacent. Doing something now that (you hope) will reduce the chances of *something* not happening 5, 10 or 20 years from now is not a brilliant action-reward feedback loop. What someone once described as, "We work hard so that nothing happens... We hope that all of that "something" we do leads to nothing - Nothing is a pretty lousy reward".
All that effort and nothing to show for it. Are we doing enough? Do we need to do more? And we can't rely on our feelings to measure these things. There are no pain-measuring nerve endings in many of the places that our Diabetes Troll might be taking a swing at. And the swing itself might be so slow as to be almost unnoticeable until it's right there upon you.
And that is why the 15 Healthcare Essentials recommended by Diabetes UK are SO important. The first 9 or 10 represent really important annual checks which allow you to keep an eye on your Diabetes Troll. And if you discover that you are straying a little too close for comfort, having these checks done every year allows you to take action early to reduce your risk of getting squished. Between 10 and 15 there are really important parts of your care package which will allow you to improve your hammer-dodging skills, brush up on your swordplay and make sure your mind, as well as your body are ready for the fight.
Around 80% of the budget spent on treating diabetes in the UK goes on sorting out complications. Just think about that for a moment. 80p out of every pound. All the cost of medications, test strips and fancy diabetes gadgetry are utterly Hobbit-like when set against the monstrous scale of the cost of helping those for whom things have not worked out so well.
The vast majority (around 90%) of people living with either type 1 or type 2 diabetes have never been offered or have never attended a structured education course which could give them the skills to live better with diabetes every day.
Way less than half of the people living with Type 1 in the UK are getting the checks that they should every year. The actual figure, according to the National Diabetes Audit is just over 40%.
People are not finding out early enough that their eyes, kidneys or nerves are starting to show a little wear and tear. It is never too late to make improvements to your own diabetes management, or get the right treatment and support. Many, many people have used information from their 15 Essential Healthcare checks to dodge the hammer-blow and nimbly dart out of reach of the troll's swing. Early warnings are just that. Improve your diabetes management and in many cases those early signs can be stopped in their tracks - sometimes they can disappear altogether.
If you live with diabetes, or know someone who does - make sure you read that list and make those appointments. Being told, 'It's all looking fine' does not make these visits a complete waste of time. It's an important annual opportunity to make sure you are staying one step ahead of the trolls.
See also: 15 checks, diabetes audits and prawns
Posted by Mike K on Wednesday, 20 May 2015
|It is. Is it? Isn't it?|
HCP: How many hypos are you having?
Me: Well... erm... that kinda depends on what you mean
Me: On how you define 'hypo'. What you mean by it. What number or experience you use.
HCP: Erm... well... I... er...
You might think that it is a fairly simple question. Anything below 4.0mmol/L right? "Four is the floor" and all that.
Except that in the US it would be below 70mg/dl (3.9mmol/L) not below 72mg/dl (4.0mmol/L) - so suddenly there are a whole bunch of results that don't 'count' if you live over the pond just to make the US version a round number.
The matter is even more complicated by inherent meter inaccuracy. I have to say I trust my current Contour Next USB more than any other I have ever owned. Previously if I wasn't sure of a result I would immediately retest and could get a new result perhaps a mmol/L or two different in either direction. With my Contour Next USB, double checked results are more often than not *exactly* the same, or at most within a few decimal places. But this aside, ALL blood glucose meters are only legally required to work to within +/- 20% of a lab value. As I have pointed out before this can mean that your 4.0 (72) reads anywhere between 3.2 (58) and 4.8 (86). So which of those sub-4s would you count if some of them might be over 4 with a different strip or from a different finger? I can't spend my whole life (and all my test strips) triple-checking everything and taking the mean value...
But even if we set aside the imperfections in the data feed and assume that all the numbers are the actual numbers, it still isn't that simple. Particularly if, like me, you have ever experienced a degree of hypoglycaemia unawareness. Because you, dear non-diabetic reader, could be quite happily pottering along right now with a plamsa glucose concentration of 3.8mmol/L and no warning signs, and no one would care a hoot. For me and rest of the pancreatically-challenged horde though... things are different. If we don't get clanging warning signs at every 3.9 there is a breed of healthcare professional that will believe you are a danger to yourself, society at large and will be lucky to make it down the stairs without collapsing into a coma.
Don't get me wrong. I do not underestimate the severity of Impaired Awareness of Hypoglycaemia. Far from it. I have lived with it, and through it, and (particularly if associated with Severe Hypoglycaemia as it so often is) it is miserable for you, your family and everyone you are close to.
But if people without diabetes can be 3.8 and not hypo... then... well... er... Are we pancreas impersonators supposed to perform better than a fully-functioning non-D?!
Added to this - some guidance describes treating levels below 4.0mmol/L to avoid hypoglycaemia. From this standpoint 3.x-3.9mmol/L could be seen as offering a sort of 'buffer zone', a tiny whisker of breathing room before things might start getting messy. But 3.what?
This study suggests that most non-diabetic people will begin to experience some early warning signs in the region of 3.6-3.9mmol/L
While this study puts the level at which the brain begins to malfunction as 3.0mmol/L. And this, after all, is what we are actually trying to avoid at the end of the day.
But you don't have to have lived with diabetes for very long before you realise that the more 3.7's you have, the harder they are to spot. And the more likely you are to start getting 3.2s. And so on... and so on...
Plus ca change
And so it goes... I have some sub-4s, I try to have fewer. Some months it works. Other months it doesn't. Sometimes people are advised to 'run a bit higher' for a while (though there is little evidence that this relaxing of targets actually works to be honest). And I'm always caught by not really knowing how important a handful of readings between 3.5 and 4.0mmol/L are in the absence of Severe Hypoglycaemia and with relatively reliable warning signs that usually kick-in around 3.0-3.5mmol/L. And yet some clinic appointments make me feel like an abject failure for missing a 3.8 here or there. And the lower your HbA1c, the more twitchy your clinic tends to be about how many 'hypos' you are having - the very people who will be asked about your fitness to drive, for example. It's a quandary.
New strategy... Gimme 5
So as of this month, I have decided to try something new. I have been treating 5.0 as if it were 4.0. Any reading below 5.0 I have been treating as if hypo with fast-acting carbs (I have never been a follow-up carb person). And anything below 5.5 I have been treating more moderately with a smaller amount of fast carbs and/or a short sharp TBR - say 30-60 minutes dropped down to 10%.
Results so far are fairly encouraging. As an approach it certainly hasn't resulted in the general hike in BG averages that I have seen previously when trying to get rid of a few more of those pesky dips below 4. Hard to be sure and I'd have to run the system for a few more months but my best guess is that I might have lost perhaps 25-40% of sub-4 readings so far.
What do you think? Am I the only one who drives themselves nuts over this? How do you go about hypo-busting?
Posted by Mike K on Sunday, 19 April 2015
I don't know why you are looking so surprised - you must have known this was coming after how things have been between us over the last few weeks.
We've been inseparable for so long now. Hardly a day has gone by in the last 5 years when I've been apart from you. All those times we've shared. All those adventures. All those scrapes we have got through together. And now it's come to this.
I know the polite thing to say is that this is down to me, but we both know that isn't the case here. It's not me, it's you. You've changed - and not in a good way. It's not just me that thinks so. Our friends have noticed the change in you too. And I'm afraid I can't go on living with you like this. You have let me down, when I needed you most. And then when I forgave you and tried to go on as before - you just went and let me down again, and again. And now I hardly even recognise you. I just don't know who you are any more.
Maybe you are looking for someone else? Someone with deeper pockets maybe? I hope you'll find someone for your future, but I know for certain that it isn't me - not while you are behaving like this.
And it breaks my heart, because we have been in this together for so long. Perhaps I came to rely on you too much? There were times when I thought I could accomplish anything as long as you were by my side. But now? Now I'm just waiting to be let down. Waiting to be abandoned. I can't trust you - and I can't be with someone that I can't trust.
I'm not angry I'm disappointed. And angry.
So I'm sorry, but I've found someone else.
For those who have *no* idea what I am going on about... after many years of faithful togetherness it seems that Fruit Pastilles (my pocket-based hypo remedy of choice) have changed their formulation. Over the last fortnight I've had to ditch large parts of several packets which became an unusable gooey mess covered in irremovable tinfoil, occasionally plastered to the inside of my jeans pocket. Nice. The worst discovery was during a training run for my forthcoming 10km road race in support of INPUT. Feeling a bit low and discovering half the remaining pastilles rendered useless 5km from home put me in a pretty tight spot for my run back.
Posted by Mike K on Thursday, 2 April 2015
|My blood glucose readings, yesterday.|
Last night we had a smallish portion of spaghetti as our evening meal. This I realise for many would be a complete no-no, but pasta has typically not been the nightmare for me that it is for many. After little experimentation and tweaking I have managed to work out a reasonably successful strategy so it no longer fills me with dread - we eat it maybe once a month.
My approach (depending on recent results) usually involves a 2.5 hour dual/combo bolus at 60:40 for the calculated dose plus an extra 1u. Previously I'd also needed an extra unit up front too, but had dropped that about 9 months ago following some post-meal dips.
More recently my previously solid post-meal performance has been *slightly* marred by a smallish rise something like 4-5 hours after eating (when the majority of the bolus was waning) so yesterday I decided to rejig my approach a little since I have a Libre sensor in at the moment and can watch what's happening. So last night I went for the calculated dose+1u as 40:60 over 3.5 hours and added the extra unit up front and watched and waited.
Annoyingly I was starting from 8.3, but spaghetti often takes a while to get going for me so I wasn't unduly worried. Stayed pretty steady for the first hour then rose gradually by about 1.5mmol/L towards hour 2. Stupidly during this time I decided to confuse matters by bolusing and nibbling on some snacks that were circulating. By about 3hrs after eating I was 5.2 with vertical down arrows (and DW still chugging away) so I gulped some precautionary Lucozade. Headed off the hypo fine, but then my BG rose and flattened at 8.5-9.5 for an hour and a half (presumably spaghetti kicking in at this point). Then inexplicably at 4.5hrs post-prandial (10.30pm) I had another unexpected BG 'kick' up to something like 11.5 so, getting a little frustrated, I whacked in another unit despite considerable IOB (insulin on board). Sat and waited until midnight and the Libre trace was pretty flat in the 10s-11s - no sign of the 1u or IOB making any impact. Just after midnight I topped-up my IOB to make it the 2u I had intended to go to bed on to counteract the remaining spaghetti fallout.
Just to recap: Spaghetti is usually pretty predictable and not a problem. Added complication of snacking/bolusing/dose stacking/dipping/(over)treating *and* trying a new system all at the same time.
But we've STILL not got to the stupid thing...
The stupid thing
One of the great things about the Libre for me is the ability to see what's going on overnight. And also that if I happen to wake, even for a moment, I can scan and check levels in a way that I simply *do not* do if it requires me to fingerstick test.
I checked at 4am and had been pretty much flatlining around 9.5 since 1am. No insulin left on board. I consulted Artoo who suggested a correction of just over a unit, but I wanted to err on the side of caution so I went for a manual bolus of 0.9u (about two thirds of the recommendation).
I woke three hours later a little groggy and scanned for the Libre to read 'LO'. Artoo showed nearly 2 units of insulin on board.
Checked downstairs via BG meter which confirmed BG was 2.2mmol/L. Bewildered and glugging Lucozade I tried to make sense of the situation...
Checking my bolus history I read that at 4am I had bolused not a cautious 0.9u, but 6.0u. Six units. SIX! My BGs had, not surprisingly, dropped off a cliff around 5.30am.
I simply cannot understand how I managed to do that. Even though one figure is very like an upside-down version of the other, I can't believe I could have made that error as all the buttons etc would be on the wrong side of my robot counterpart if I was holding the pump upside down.
But however it was that I managed to construct that error, there seems no denying that I did it.
And it's not one I'm wanting to repeat any time soon!