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
Urine specific gravity of 1.029 indicates concentrated urine, which is common in dehydration but not specific to prerenal AKI. It reflects the kidney’s ability to concentrate urine in response to fluid deficit.
Choice B rationale
BUN of 28 mg/dL can indicate dehydration or renal impairment. However, it is not as specific as creatinine in diagnosing prerenal AKI. BUN can be elevated due to other factors like high protein intake or gastrointestinal bleeding.
Choice C rationale
Creatinine of 2.4 mg/dL is a critical indicator of kidney function. Elevated creatinine levels are more specific to renal impairment, including prerenal AKI, as they reflect the kidney’s ability to filter waste products.
Choice D rationale
Dry mucous membranes are a sign of dehydration but are not specific to prerenal AKI. They indicate fluid volume deficit but do not directly reflect kidney function.
Correct Answer is B
Explanation
Choice A rationale
Checking blood sugar levels before each meal is a good practice for managing diabetes and does not indicate a need for further teaching.
Choice B rationale
Skipping medication if blood sugar is normal indicates a misunderstanding of diabetes management. Medications should be taken as prescribed to maintain consistent blood sugar levels.
Choice C rationale
Following a balanced diet and exercising regularly are important components of diabetes management and do not indicate a need for further teaching.
Choice D rationale
Monitoring feet for cuts or sores is crucial for diabetes management to prevent complications like infections and ulcers.