Lecture 1
Injections
What is a small bottle that contains a drug?
ampulle
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What is the diameter or barrel size of a needle called?
Gauge
The higher the number the smaller the gauge
What is the enlarged base by which a hollow needle may...
CPSS Final Exam
Lecture 1 correct answersInjections
What is a small bottle that contains a drug? correct answersampulle
What is the diameter or barrel size of a needle called? correct answersGauge
The higher the number the smaller the gauge
What is the enlarged base by which a hollow needle may be attached to a device? correct answershub
What is a cylindrical container that holds liquids? correct answersbarrel
what is a small container, usually w/ closure, that is used esp for liquids? correct answersvial
(TQ?) What is the Z-track method used for? correct answersto prevent leakage of irritating (vistaril) and discoloring medication (e.g. iron dextran) into the SQ tissue
It may also be used in elderly w/ decreased mm mass
In the Z-track method, which way do you displace the skin: Laterally or Medially? correct answersuse ULNAR side of nondominent hand to pull skin LATERALLY (displaces tissue ABOVE the mm)
What size needle length is used for a 200 lbs person? 100 lb? correct answers200 - 2 inch needle
100 - 1.25-1.5 inch needle
what are the indications for injections? correct answers(1) drug is poorly absorbed or degraded in GI tract (2) predictable and rapid drug response during an emergency
(3) pt is uncooperative, unconscious, or unable to take drug through enteral route
(4) localized drug therapy is desired
What are some reasons of "why not" to perform an injection? correct answersmore expensive
must be sterile
takes skilled/trained personel
may be difficult to remove dose if toxic/AE
What does parental refer to? correct answersany route other than the alimentary canal...so IM/ID/SQ/IV
How do you measure the length of a needle? correct answersfrom the hub to the tip
Name the needle gauge that is used for the following scenarios:
Blood Withdrawal?
IM injection?
SQ injection?
ID injection? correct answersBlood withdrawal: 18g
IM injection: 22 gauge
SQ injection: 25-27 gauge
ID injection: 27 gauge
*remember the smaller the gauge the larger the needle diameter*
What must you remember NEVER to do, with regards to needles? correct answersNEVER RECAP! (or stick
yourself)
A 4 month old pt presents for his vaccinations (IM), what is the perferred location for the injection and what needle length and gauge would you use? correct answersLocation: Anteriorlateral thigh Lengh: 5/8 - 1 inch
Gauge: 25-27
If a toddler/older child presents for his routine vaccination (IM), what is the perferred location for the injection and what needle length and gauge would you use? correct answersLocation: Deltoid/Anterlateral thigh
Length: 5/8 - 1 inch
Gauge: 22 - 27
IM injections are (faster/slower) than SQ and (faster/slower) than IV correct answersFaster than SQ and Slower than IV
What are the indications for IM injections? correct answersdrugs not easily absorbed orally
immediate rate of onset and duration of action perferred
when parental delivery necessary
What are the contraindication for IM injections? correct answerscellulitis/dermatitis overlying the injectin site
What length and gauge is used for IM injections? correct answers19-22 gauge 1-1.5 inch needle
Gauge size in IM injection is dependent on what? correct answersdrug viscosity
Length in IM injection is dependent on what? correct answersdepth of insertion What type of muscle is utilized in IM injections? correct answersStriated mm
what are the 3 princple sites for IM injections? correct answersGluteus, Vastus Lateralis, and Deltoid
If performing a IM injection into the gluteus maximus, what is used to determine the length of the needle? correct answersAmount of fat - if too short injection is made into fat (no good)
Hint: women have more fat than men in the gluteus maximus, therefore they are at higher risk for intralipomatous injection
How many CC's of fluid can be injected in an IM injection in the DELTOID? correct answers< 2 CC
What is the location for needle insertion in an IM injection into the deltoids? correct answers3-4 cm below acromion
Are IM deltoid injection, perferred more in infants or adults? correct answersadults
used for vaccination in adults
What is the DANGER for injecting children w/ IM injection in the deltiod? correct answersRADIAL nerve injury
What is the PERFERRED location for IM injection in pts <3 y/o? correct answersVastus Lateralis (anterolateral thigh)
used for vaccination in children
What volume can be injected in the thigh in kids? correct answers0.5-2 cc
The vastus lateralis LACKS nerves and vessels, however the the injection can still be painful due to what? correct answersFascia Lata
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