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Diabetes Medication and Supplies Discuss diabetes medication and diabetes supplies here. Talk about experiences you have with certain medication and diabetes supplies, or with certain diabetes supply stores or manufacturers.


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wait for a count of 10 - Page 2


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Old 03-25-2018, 20:38   #11
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It's my understanding that pulling the needle out right away can cause some of the insulin to be sucked back into the needle. But I've never heard of waiting more than 5 seconds.
Odd? Seems like considering the pressure caused by the injection and small needle, you would never get a vacume pressure, pulling something back into the needle... It isn't logical, but most of us have heard other 'illogical' ... instructions from medical educators...e.g.how many were told to do your finger stick on the tip of the fingers? OUCH!

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Old 03-26-2018, 06:11   #12
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Odd? Seems like considering the pressure caused by the injection and small needle, you would never get a vacume pressure, pulling something back into the needle... It isn't logical, but most of us have heard other 'illogical' ... instructions from medical educators...e.g.how many were told to do your finger stick on the tip of the fingers? OUCH!
That's right. I also don't see how some insulin would get back into the needle; especially when I keep forward pressure on the plunger when I pull the needle out.

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Old 06-14-2018, 17:33   #13
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My guess would be that pressing the plunger on the pen creates pressure within the pen, which in turn creates flow through the needle. The needle being pretty small, causes resistance to that flow, so that the pressure created within the pen takes time to equalize with the pressure on the other side of the needle. When pressures equlizes the flow then stops. The time allowed should let the full dose you set on the pen go in ya and not on ya. Now there still may be a slight differential in pressure in the pen versus the pressure on the outside of your point of injection, so there could be a small droplet form at the end of the needle. Their 10 seconds may need to be 15 seconds or you may want to withdraw the needle partway before pulling it completely out.

I'm not on insulin, but my work does utilize the principles of differential pressures and flows of liquids and gases, and I have stayed at a couple of HI Expresses.
Very good analysis in my estimation, and even if it is wrong, it sounds right. Just kidding, I could not have up with a better explanation if I tried. I am in the habit of holding the plunger, until I count to 10. And I am sure, that I will do so, until I die.

{PS: One need not stay at a Holiday Inn, in order to be ingenious. But it helps, and it beats sleeping in your car.}

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