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Difficulty: HardAccident, Error, and Injury Prevention

A nurse is completing a safety screening for a client who is scheduled for a magnetic resonance imaging (MRI) scan with intravenous gadolinium contrast. Which of the following documented findings poses the greatest risk for client injury and requires immediate intervention before the procedure?

  1. A
    The client reports a history of anaphylaxis following the administration of iodinated contrast.
  2. A transdermal clonidine patch is adhered to the client's upper chest.Answer
  3. C
    The client's most recent basic metabolic panel indicates a serum creatinine level of 0.9 mg/dL.
  4. D
    The client underwent a right total knee arthroplasty with a titanium implant five years ago.

Answer

The presence of a transdermal clonidine patch poses the greatest risk for injury because its metallic backing can cause severe thermal burns during the MRI.
Transdermal patches (such as clonidine, nicotine, fentanyl, and scopolamine) often contain a heat-conducting aluminized layer in the backing. If left in place during a magnetic resonance imaging (MRI) scan, the radiofrequency pulses can rapidly heat the metallic layer, causing full-thickness thermal burns to the client's skin. The nurse must remove the patch before the MRI (and replace it afterward or provide an alternative form of the medication as prescribed) to prevent severe injury. This represents the most immediate physical threat to the client.

Step-by-Step Solution

1
Analyze the procedure and its associated safety risks.
The client is undergoing an MRI, which utilizes strong magnetic fields and radiofrequency pulses. Safety hazards include ferromagnetic objects, devices that can heat up, and contrast contraindications.
Understanding the physics and requirements of the procedure is essential for identifying environmental and physiological hazards.
2
Evaluate the risk associated with the transdermal patch.
Many transdermal patches (such as clonidine, nicotine, and fentanyl) have an aluminized backing that can absorb radiofrequency energy, leading to rapid heating and severe thermal burns.
Nurses must recognize hidden metallic elements on or in the client's body that are not obvious hazards.
3
Differentiate between contrast media allergies.
Iodinated contrast is used for CT scans, whereas gadolinium is used for MRI. An iodine allergy does not cross-react with gadolinium.
Accurate allergy assessment prevents unnecessary procedure delays while maintaining safety.
4
Assess the remaining findings for MRI safety.
Titanium implants are non-ferromagnetic and safe. A creatinine of 0.9 mg/dL is normal and indicates gadolinium is safe to administer regarding renal clearance.
Evidence-based screening ensures clients are safely cleared for diagnostic imaging without missing true priority threats.

Key Concept

Magnetic Resonance Imaging (MRI) Safety and Thermal Burn Prevention
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Topics

Accident, Error, and Injury Prevention

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