Page 2007 - Saunders Comprehensive Review For NCLEX-RN

cerebral atrophy, and shifts of brain
structures.

An informed consent is needed for any

invasive procedure, including those that use a
contrast medium (dye).

2. Preprocedure interventions

a. Assess for allergies to iodine, contrast
dyes, or shellfish if a dye is used.
b. Assess renal function and verify
contrast dose with the pharmacy.
c. Instruct the client of the need to lie still
and flat during the test.
d. Instruct the client to hold her or his
breath when requested.
e. Initiate an intravenous line with the
appropriate gauge size if prescribed.
f. Remove objects from the head, such as
wigs, barrettes, earrings, and hairpins.
g. Assess for claustrophobia.
h. Inform the client of possible mechanical
noises as the scanning occurs.
i. Inform the client that there may be a
hot, flushed sensation and a metallic
taste in the mouth when the dye is
injected.
j. Note that some clients may be given the
dye even if they report an allergy; they
may be treated with an antihistamine
and corticosteroids before the injection
to reduce the severity of a reaction.

Assess the need to withhold metformin if

iodinated contrast dye is used for a diagnostic
procedure because of the risk for metformin-induced
lactic acidosis.
3. Postprocedure interventions

a. Provide replacement fluids, because
diuresis from the dye is expected.
b. Monitor for an allergic reaction to the
dye.
c. Assess the dye injection site for
bleeding or hematoma, and monitor

2007