Page 2008 - Saunders Comprehensive Review For NCLEX-RN
P. 2008

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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