SQ injections - concepts to know Flashcards
Connects to the needle
Tip
Outside part with markings for the dosage
Barrel
Used to withdraw medication and push it out through the needle
Plunger
Which parts of the syringe must remain sterile?
tip, inside of the barrel and the plunger
If 3mL are to be administered, what size syringe should be chosen?
the next size up - e.g. 5mL
Why should a syringe not be filled to capacity?
The plunger can easily fall out
Which syringe scale is most commonly used?
millilitre scale
The dosage of a 1mL syringe is marked how?
Tenths and hundredths
The dosage of a 3mL syringe is marked how?
marked in tenths
How much insulin does an insulin syringe hold?
100 units
the 1mL syringe is commonly used for what?
SQ or intradermal injections
the 3mL syringe is commonly used for what?
SQ or IM injections
What are the three parts of the syringe?
Tip, barrel, plunger
What are the three parts of the needle?
Hub, cannula or shaft, bevel
Slanted part at tip of the needle
Bevel
Attaches needle to the syringe
Hub
Attached to hub, long thin stem of the needle with a bevel at one end
cannula or shaft
Hollow core of the needle shaft
lumen
What should the nurse assess for when determining needle length?
route of injection
site of injection
client size
When determining the gauge, the nurse should asses for what?
Route of injection
Viscosity of the meds
The larger the gauge, the _______ the diameter.
smaller
25G vs. 30G. Which has the bigger diameter?
25G
The more viscous the medication, the _____ the gauge.
smaller
In general, the diameter for SQ injection is _______ than the diameter for an IM medication. Why?
Smaller
b/c the volume of medication is smaller for SQ and less viscous than IM
What sites are used for SQ?
Back of arm, anterior aspect of thigh, abdomen
What is the safe SQ volume?
up to 1mL
What is the needle gauge for SQ?
25-30G
What is the needle length for SQ?
3/8-5/8”
What is the angle of injection for SQ?
90° or 45° for thin clients
What is used to withdraw medication from an ampule?
Filter needle to prevent drawing up glass
What is the preferred site for administering anticoagulants?
Abdomen, 5cm below umbillicus below the coastal margins and above the iliac crests
Insulin is absorbed most rapidly where?
Abdomen
How long do you wait after injection to remove the needle for SQ?
5 seconds
How long can open insulin be used for?
28 days
