Page 2008 - Saunders Comprehensive Review For NCLEX-RN

the extremity for color, warmth, and
the presence of distal pulses.
C. Magnetic resonance imaging (MRI)
1. Description
a. A noninvasive procedure that identifies
tissues, tumors, and vascular
abnormalities.
b. It is similar to CT scanning but provides
more detailed pictures.

2. Preprocedure interventions

a. Remove all metal objects from the
client.
b. Determine whether the client has a
pacemaker, implanted defibrillator, or
other metal implants such as a hip
prosthesis or vascular clips, because
these clients cannot have this test
performed.
c. Insert an intermittent infusion device
(saline lock) to all intravenous accesses
prior to the procedure (intravenous
fluid pumps are not allowed in the
MRI room).
d. Provide precautions for the client who
is attached to a pulse oximeter, because
it can cause a burn during testing if
coiled around the body or a body part.
e. Provide an assessment of the client with
claustrophobia (may not be necessary
if an open MRI machine is used).
f. Administer medication as prescribed for
the client with claustrophobia.
g. Determine whether a contrast agent is
to be used and follow the prescription
related to the administration of food,
fluids, and medications. Verify
allergies and renal function prior to
administration.
h. Instruct the client that she or he will
need to remain still during the
procedure.

An MRI is contraindicated in a pregnant

woman, because the increase in amniotic fluid
temperature that occurs during the procedure may
be harmful to the fetus.

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