Which infection control measure, by the nurse, reduces the potential spread of methicillin-resistant Staphylococcus aureus (MRSA)?
Wearing an N95 mask while in the room of a patient with airborne precautions.
Wearing a facemask while in the room of a patient with droplet precautions.
Use of a separate disposable blood pressure cuff for any patient with a draining wound.
Use of strict hand washing measures once in every 8-hour work shift.
The Correct Answer is C
Choice A rationale
Wearing an N95 mask is appropriate for airborne precautions, such as tuberculosis, but not specifically for MRSA, which requires contact precautions.
Choice B rationale
Wearing a facemask is suitable for droplet precautions, such as influenza, but MRSA is primarily spread through direct contact, not droplets.
Choice C rationale
Using a separate disposable blood pressure cuff for patients with draining wounds helps prevent the spread of MRSA. MRSA can be transmitted via contaminated medical equipment.
Choice D rationale
Strict hand washing measures are essential but should be performed more frequently than once every 8-hour shift. Hand hygiene should be practiced before and after patient contact.
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Correct Answer is C
Explanation
Choice A rationale
Wearing an N95 mask is appropriate for airborne precautions, such as tuberculosis, but not specifically for MRSA, which requires contact precautions.
Choice B rationale
Wearing a facemask is suitable for droplet precautions, such as influenza, but MRSA is primarily spread through direct contact, not droplets.
Choice C rationale
Using a separate disposable blood pressure cuff for patients with draining wounds helps prevent the spread of MRSA. MRSA can be transmitted via contaminated medical equipment.
Choice D rationale
Strict hand washing measures are essential but should be performed more frequently than once every 8-hour shift. Hand hygiene should be practiced before and after patient contact.
Correct Answer is D
Explanation
Choice A rationale
The left extrapyramidal tract is involved in motor control, but lesions here would not cause right homonymous hemianopia or inability to move the right arm. These symptoms are more indicative of a lesion in the cerebral hemisphere.
Choice B rationale
A lesion in the right cerebral hemisphere would cause left-sided symptoms, not right-sided. The patient’s symptoms are indicative of a lesion in the left cerebral hemisphere.
Choice C rationale
The cerebellum is involved in coordination and balance, not in causing right homonymous hemianopia or inability to move the right arm. These symptoms are more indicative of a lesion in the cerebral hemisphere.
Choice D rationale
A lesion in the left cerebral hemisphere can cause right homonymous hemianopia and inability to move the right arm. This is because the left hemisphere controls the right side of the body and processes visual information from the right visual field.