A nurse is providing teaching to a client who will undergo a magnetic resonance imaging (MRI) scan. Which of the following statements is appropriate to include in the teaching?
"The nurse will ask you to remove any transdermal patches prior to the procedure."
"The nurse will ask you to wear protective eyewear during this procedure."
"You should not have this procedure if you are allergic to iodine."
"You should not have this procedure if you have a tattoo."
The Correct Answer is A
Rationale:
A. "The nurse will ask you to remove any transdermal patches prior to the procedure.": Some transdermal patches contain metallic components that can overheat during an MRI, posing a burn risk. Removing them prevents injury and ensures safety in the strong magnetic field.
B. "The nurse will ask you to wear protective eyewear during this procedure.": Protective eyewear is not necessary for MRI scans, as there is no exposure to bright light or flying debris. This precaution applies more to procedures involving lasers or potential eye hazards.
C. "You should not have this procedure if you are allergic to iodine.": Iodine allergies are a concern with certain CT scans using iodinated contrast, not standard MRIs. MRI contrast agents typically contain gadolinium, which has a different allergy profile.
D. "You should not have this procedure if you have a tattoo.": Tattoos generally do not contraindicate MRI, although some with metallic ink may cause mild skin irritation. This is rare and does not usually prevent the procedure from being performed.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Rationale:
A. Urine output 20 mL/hr: This urine output is below the recommended minimum of 30 mL/hr and may indicate magnesium toxicity or worsening renal perfusion. It is not a therapeutic effect and requires prompt evaluation.
B. BP 150/92 mm Hg: This blood pressure is still elevated and does not indicate optimal control of preeclampsia. Magnesium sulfate is given to prevent seizures, not primarily to lower blood pressure, so this is not a measure of therapeutic effect.
C. Absence of eclampsia: Magnesium sulfate is administered in preeclampsia to prevent the onset of eclampsia (seizures). The absence of seizure activity indicates that the medication is having its intended therapeutic effect.
D. FHR 116/min: This fetal heart rate is within the normal baseline range of 110–160/min, but it is not a direct therapeutic effect of magnesium sulfate. It is more a reflection of fetal well-being rather than the drug’s primary purpose.
Correct Answer is B
Explanation
A. Both fontanels are the same size: Fontanels differ in size and shape; the anterior is larger and diamond-shaped, while the posterior is smaller and triangular. Expecting them to be the same size is inaccurate.
B. The anterior fontanel is open: The anterior fontanel typically remains open until about 12–18 months of age. At 8 months, an open anterior fontanel is an expected finding and indicates normal skull development.
C. The posterior fontanel is open: The posterior fontanel usually closes by 6–8 weeks of age. An open posterior fontanel at 8 months may indicate delayed closure and should be evaluated further.
D. Both fontanels show molding: Molding refers to overlapping of cranial bones during birth. At 8 months, molding should no longer be present; its presence is not a normal finding at this age.
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