The line and plunger

anjule18 · Jun 25, 2011

Trying to understand what you are asking. I would think that is noticable because you count the lines, so I don't know how the girl didn't pass. Maybe nerves or when looking at the line counting wrong. Just a thought. I am not sure butyou have it right idea with the plunger. The plunger should be at the same spot where med is at starting. I get what you mean with the distal part, the hump part I think is where you count from of the plunger. Do I have that right? oh not sure now

nursemomma11 · Jun 25, 2011

Hey, I posted this on EPN but didn't know if you were still getting on or not, so I just copied my post to here:

I had always been under the impression that you don't place the tip on the mark you intend to give, but rather where the tip comes down and touches the wall of the barrel. I tried to do some investigating and couldn't find an exact method in my fundamentals or nursing procedure book and the internet is limited. I did find this page though:

http://pharmlabs.unc.edu/labs/measurements/syringe.htm

Read under measurement techniques with syringes. It gives a description of which mark to use. Could faculty or someone please verify the correct way to measure in a syringe.

CompleteUnknown · Jun 25, 2011

Hope I'm understanding what you're asking. You don't line it up with the 'tip' of the plunger, you line it up with where the angled part of the plunger first touches the wall of the syringe. Imagine you were drawing up milk, or something else that you couldn't see through, there's no way you could line it up with the tip of the plunger.

If you're drawing up 2 ml of milk, you should be able to see that the milk fills the syringe from the top (where you attach the needle) to the 2 ml mark on the syringe. So the milk is at 2 ml, the 'top' edge of the plunger is also at 2 ml, and the 'bottom' edge of the plunger will be at 2.1 or 2.2 or something. Does that make sense?

This doesn't show the tip of the plunger in the pictures, but might help you get the idea:

http://webtools.delmarlearning.com/sample_chapters/07_Curren_1401831222.pdf

dslpninla · Jun 25, 2011

Hey, I posted this on EPN but didn't know if you were still getting on or not, so I just copied my post to here:
I had always been under the impression that you don't place the tip on the mark you intend to give, but rather where the tip comes down and touches the wall of the barrel. I tried to do some investigating and couldn't find an exact method in my fundamentals or nursing procedure book and the internet is limited. I did find this page though:
http://pharmlabs.unc.edu/labs/measurements/syringe.htm
Read under measurement techniques with syringes. It gives a description of which mark to use. Could faculty or someone please verify the correct way to measure in a syringe.

Im all confused now... Between the hump at the end of the plunger or the distal round part that slides against the inner cylinder(syringe). One comment has messed me up a bit! Ill see if i can post a picture....

So 3 mls right but Im not basing that off where the hump inside hits. ???

CompleteUnknown · Jun 26, 2011

Im all confused now... Between the hump at the end of the plunger or the distal round part that slides against the inner cylinder(syringe). One comment has messed me up a bit! Ill see if i can post a picture....
So 3 mls right but Im not basing that off where the hump inside hits. ???

Yes, that's three mls. :)

See how the head of the plunger is the same shape as the top of the syringe? Push the plunger up to zero and the part that slides against the wall of the syringe will be at the zero mark, and the tip of the plunger will fit into the top of the syringe. You will have pushed out exactly 3 mls.

The shape of the plunger depends on the shape of the top of the syringe (some of them are flat), always draw up until your liquid is at the wanted amount on the markings on the syringe.

dslpninla · Jun 26, 2011

Thank you!! Thats how ive always done it, but for some reason i started thinking "what if i get there and im wrong!!" whew..... Thank you!!

It took me forever to get that photo uploaded!!

BeachieRN84 · Jun 26, 2011

Im all confused now... Between the hump at the end of the plunger or the distal round part that slides against the inner cylinder(syringe). One comment has messed me up a bit! Ill see if i can post a picture....
So 3 mls right but Im not basing that off where the hump inside hits. ???

That looks perfect to me girl!

MedicLifelineRN · Jun 28, 2011

I posed this question on the epn but i like to ask you guys too......
So i was reading through the cpne journals on here and one girl states she failed ivp bc the plunger was three tenths off..... I dont get that. Wouldnt that be noticable that you are for example not AT the five line but three above it?
This leads me to the question. The plunger should be flush with the line you are pulling up correct? not before, after, but the distal tip of the plunger in the syringe should be flush with the distal line edge......does this make sense??
0
.5 1
l l l l l l l l l l
I do better learning hands on or visually.... Forgive the drawing please!

It dependson the light. They wnt the plunger in the middle perfect split. On one exam it took 2 instructors since both saw two different things, a while to finally fail me the one time. One saw it right , one saw it wrong. either way that plunger better be a perfect split and not a hair off.