A nurse is preparing to assist with a magnetic resonance imaging (MRI) procedure for a patient. What action should the nurse prioritize to ensure procedural safety?

Correct Answer: A

Rationale: The nurse should prioritize screening the patient for contraindications to MRI, such as metal implants or claustrophobia, to ensure procedural safety. Metallic objects can be hazardous in an MRI environment as they can be attracted to the magnet, potentially causing harm to the patient or staff. Claustrophobia can also be a significant issue for patients undergoing an MRI scan, and identifying this beforehand allows for appropriate measures to be taken to address the patient's anxiety or discomfort. Prioritizing this screening step helps ensure the safety and well-being of the patient during the MRI procedure.

Correct Answer: B

Rationale: The presentation of a pruritic, erythematous rash with edematous plaques and vesicles on the hands and fingers in a patient with a history of exposure to detergents and frequent hand washing is most indicative of contact dermatitis. Contact dermatitis can be caused by direct contact with irritants such as detergents or chemicals, leading to skin irritation and inflammation. In this case, the history of exposure to detergents and hand washing suggests that the rash is likely due to irritant contact dermatitis. Atopic dermatitis, psoriasis, and pityriasis rosea do not typically present with the same pattern of rash in response to irritant exposure.

Correct Answer: A

Rationale: The patient's presentation of a pruritic, annular rash with fine scaling and central clearing, affecting the trunk and proximal extremities, following exposure to a new soap and laundry detergent is most consistent with tinea corporis, commonly known as ringworm. Ringworm is a superficial fungal infection caused by dermatophytes that can present with circular or annular lesions with central clearing and scaling. The exposure to new soap and laundry detergent may have disrupted the skin's microbiome, making it more vulnerable to fungal infections like tinea corporis. Nummular eczema typically presents as coin-shaped plaques rather than annular lesions, while pityriasis rosea presents with a herald patch followed by smaller similar lesions in a "Christmas tree" distribution. Lichen planus would not typically be associated with exposure to new soap and laundry detergent but can have distinct purple, polygonal papules.

Correct Answer: A

Rationale: The presentation of a palpable, non-tender mass in the right neck, just below the angle of the mandible, along with ultrasound imaging findings of a well-defined, hypoechoic lesion with cystic components, is classic for a branchial cleft cyst. Branchial cleft cysts are congenital anomalies that arise from remnants of the branchial clefts or pouches during embryonic development. They are typically located along the anterior border of the sternocleidomastoid muscle, just below the mandible. Ultrasound imaging often shows a cystic lesion with well-defined borders and hypoechoic content, which is consistent with the described findings. Thyroglossal duct cysts usually present as midline neck masses that move with swallowing or tongue protrusion, not in the location described in the scenario. Lymphadenopathy would present as enlarged lymph nodes that may be tender and associated with systemic symptoms.

Correct Answer: B

Rationale: Ramsay Hunt syndrome is caused by the varicella-zoster virus affecting the geniculate ganglion, leading to a triad of symptoms known as the Hunt syndrome: facial paralysis, ear pain, and a vesicular rash in the ear or palate. The facial paralysis in Ramsay Hunt syndrome is usually peripheral, similar to Bell's palsy, but may be more severe. In addition to facial paralysis, the patient may have the inability to close the eye on the affected side (lagophthalmos) and loss of taste sensation on the anterior two-thirds of the tongue due to involvement of the chorda tympani nerve. This differentiation is important to consider in the context of our patient's presentation.