Difference in gluco checksRegister Today!
- by laderalis Jul 19, '12First gluco check was done on left hand index finger, 314. VERY high for resident. After joking with her that I would do a recheck on her right pinkie finger because maybe it would be lower (because the finger is smaller), 145. normal for resident.
Why such a difference?
I used the same type of test strips, same glucometer, same type alcohol swabs.
Only thing I can think of is maybe I didn't clean her finger off good enough and there was some food or something left over that was picked up in the high reading.
- Jul 19, '12 by amoLuciaMy first thought was to think something was funky about the glucometer!!! Those little things take such a brutal beating with high usage, drops on the floor, and all those in-between cleanings. I have to use them on the floor but whenever I get such disparate results, I get another meter. I just don't trust those little buggers!
Also, think about operator error - was the blood drop juicy enough? A skimpy sample can give a lower reading. Did the test strips match the bottle? Frequent BIG BIG error. Are your machine calibrated/checked as required? Most places do QA checks each shift. Do a test with the hi-lo reagents. You may need to change the strips and bottle chip and try again.
Two so different readings would not be enough for me to proceed with an intervention until I was ABSOTIVELY, POSOLUTELY :redlight: comfortable with the results.
- Jul 20, '12 by BrandonLPNAlso, if you don't let the alcohol dry before doing the fingerstick, that can give a false high.
- Jul 20, '12 by TheCommuterA finger stick blood glucose sample that has too much interstitial fluid can result in a falsely low reading.
Also, if the patient has ever had a stroke (CVA) in the past, do not obtain the blood glucose sample on the affected side.
- Jul 20, '12 by RNewbieI dont trust the machines either. I was taught to never use the thumb or pinky because they give abnormally high and low values.
- Jul 20, '12 by Kittypower123I was taught to never use the thumb or pinky because they give abnormally high and low values.
- Jul 20, '12 by Been there,done thatQuote from Kittypower123I've been a nurse TOO long , I found that funny.Interesting - I had not heard that before. I actually have a resident that only has a thumb and a pinky (the others have been amputated).
- Jul 20, '12 by ScottE,RNHandheld glucometers are highly inaccurate. Per the ISO standards they only need to be within plus or minus 20% of laboratory standards 95% of the time.
- Jul 20, '12 by Pedsnurse77Quote from Been there,done thatOmg me too! I've done forearms for this reason.I've been a nurse TOO long , I found that funny.
- Jul 20, '12 by BrandonLPNI use the thumb all the time. Toes sometimes, too. I'm still always in the pts normal range.