A nurse is preparing a patient for magnetic resonance imaging (MRI) scan to confirm or rule out a spinal cord lesion.
Which action would pose a threat to the patient during the procedure?
The patient receives lorazepam 1 mg by mouth prior to the procedure.
The patient eats breakfast prior to the procedure.
The patient wears a watch and wedding band.
The patient is positioned supine.
The Correct Answer is C
Choice A rationale
Lorazepam is an anxiolytic medication that can help reduce anxiety and claustrophobia, which are common concerns during an MRI. Administering 1 mg orally is a standard and safe practice to promote patient comfort and cooperation without posing a direct threat during the procedure itself.
Choice B rationale
Eating breakfast prior to an MRI scan is generally not contraindicated unless the scan requires a specific type of contrast that necessitates fasting, or if sedation is planned. For a standard MRI of the spine, food intake typically does not interfere with the imaging or pose a safety risk.
Choice C rationale
A watch and wedding band are metallic objects. MRI utilizes strong magnetic fields; ferromagnetic materials are highly attracted to these fields and can become projectiles, posing a significant risk of injury to the patient or personnel. These items can also cause image artifacts.
Choice D rationale
Positioning the patient supine is a common and appropriate position for an MRI of the spine. This position helps to immobilize the patient and allows for optimal alignment of the spinal column within the scanner, facilitating clear image acquisition without posing a safety threat.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Stopping topical fluorouracil when the skin appears worse is incorrect. The medication often causes an inflammatory reaction, including erythema, crusting, and erosion, which indicates the drug is working by causing cellular necrosis of abnormal cells. Premature discontinuation compromises treatment efficacy and may lead to inadequate destruction of cancerous cells, necessitating prolonged or alternative therapies.
Choice B rationale
Avoiding sun exposure while using topical fluorouracil is crucial due to the medication's photosensitizing properties. Fluorouracil enhances the skin's sensitivity to ultraviolet radiation, increasing the risk of severe sunburn, erythema, and blistering. This phototoxicity can exacerbate local inflammatory reactions and compromise treatment outcomes, necessitating strict photoprotection.
Choice C rationale
Applying topical fluorouracil only to affected areas is essential to minimize systemic absorption and reduce adverse effects on healthy skin. Fluorouracil is a cytotoxic agent that nonspecifically inhibits DNA and RNA synthesis, leading to cell death. Accidental application to unaffected skin can cause unnecessary irritation, inflammation, and discomfort without therapeutic benefit.
Choice D rationale
Washing hands before and after applying topical fluorouracil is a fundamental infection control and safety measure. Handwashing before application prevents the introduction of microbes to the treatment site, reducing infection risk. Post-application handwashing removes residual medication, preventing accidental transfer to other body parts or individuals, minimizing systemic exposure.
Correct Answer is ["A","C","D","E"]
Explanation
Choice A rationale
Mobility is a critical subscale in the Braden Scale. It assesses the patient's ability to change and control body position independently. Impaired mobility significantly increases the risk of prolonged pressure on specific body areas, leading to tissue ischemia and subsequent pressure injury development.
Choice B rationale
Pain is not a direct subscale in the Braden Scale. While pain can indirectly affect mobility and activity levels, it is not one of the six core parameters used to quantify the risk of pressure injury development according to the established framework of the Braden Scale, which focuses on extrinsic and intrinsic factors affecting skin integrity.
Choice C rationale
Nutrition is a key subscale in the Braden Scale. It evaluates the patient's usual food intake pattern. Adequate nutrition, particularly protein and calories, is essential for maintaining tissue integrity and promoting wound healing. Malnutrition compromises skin resilience and repair mechanisms.
Choice D rationale
Sensory perception is a vital subscale in the Braden Scale. It measures the patient's ability to respond meaningfully to pressure-related discomfort. Patients with impaired sensory perception may not perceive pressure or pain, failing to shift their weight and thus increasing their risk for tissue damage.
Choice E rationale
Moisture is a crucial subscale in the Braden Scale. It assesses the degree to which skin is exposed to moisture, such as urine, feces, or perspiration. Prolonged exposure to moisture macerates the skin, making it more fragile and susceptible to breakdown from friction and shear forces.
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