Comprehensive Quiz 2026 |WCU
1. When administering an intramuscular injection using the Z-track method,
what is the primary purpose of this technique?
A. To ensure the medication is deposited into the subcutaneous tissue.
B. To minimize local skin irritation by sealing the medication in the muscle tissue.
C. To allow for faster absorption into the bloodstream.
D. To reduce the risk of hitting a bone during the injection.
Answer: B
Rationale: The Z-track method is used in IM injections to prevent medication from leaking
back into the subcutaneous tissue, which reduces irritation and staining of the skin.
2. Which anatomical landmarks are used to locate the ventrogluteal site for an
intramuscular injection?
A. Greater trochanter, anterior superior iliac spine, and the iliac crest.
B. Acromion process and the axillary line.
C. Greater trochanter and the lateral femoral condyle.
D. Posterior superior iliac spine and the gluteal fold.
Answer: A
Rationale: To locate the ventrogluteal site, the nurse places the palm over the greater
trochanter, the index finger on the anterior superior iliac spine, and extends the middle
finger toward the iliac crest.
,3. A nurse is preparing to administer an intradermal injection for tuberculin
screening. At what angle should the needle be inserted?
A. 90 degrees
B. 45 degrees
C. 5 to 15 degrees
D. 30 degrees
Answer: C
Rationale: Intradermal injections are administered into the dermis, just under the
epidermis, at a shallow angle of 5 to 15 degrees with the bevel up.
4. When mixing regular insulin and NPH insulin in one syringe, which action is
correct?
A. Draw up the NPH (cloudy) insulin first.
B. Withdraw the regular (clear) insulin before the NPH (cloudy) insulin.
C. Shake both vials vigorously to ensure proper mixing.
D. Inject air into the regular vial first, then the NPH vial.
Answer: B
Rationale: To prevent contaminating the fast-acting regular insulin with the long-acting
NPH insulin, the clear (regular) insulin is always drawn up first.
5. Which needle gauge and length are most appropriate for a subcutaneous
injection in a client of average weight?
A. 18 gauge, 1.5 inch
B. 22 gauge, 1 inch
C. 21 gauge, 1.25 inch
D. 25 gauge, 5/8 inch
Answer: D
Rationale: Subcutaneous injections typically require a 25- to 27-gauge needle that is 3/8
to 5/8 inch long to reach the adipose tissue.
, 6. A nurse is preparing to administer Heparin subcutaneously. Which action
should the nurse avoid?
A. Rotating the injection sites.
B. Checking the dose with another licensed nurse.
C. Administering in the abdominal area.
D. Aspirating for blood return.
Answer: D
Rationale: Aspiration is not recommended for subcutaneous injections, especially with
Heparin, as it can cause tissue damage and hematoma formation.
7. What is the maximum volume of medication that can safely be injected into
the deltoid muscle of an adult?
A. 1 mL
B. 5 mL
C. 3 mL
D. 0.5 mL
Answer: A
Rationale: The deltoid is a small muscle; the recommended maximum volume for IM
injection in this site for an adult is 1 mL (some guidelines allow up to 2 mL, but 1 mL is the
standard safe answer).
8. When administering ear drops to a 4-year-old child, how should the nurse
manipulate the pinna?
A. Pull the pinna upward and outward.
B. Pull the pinna down and back.
C. Pull the pinna straight back.
D. Pull the pinna downward and forward.
Answer: A