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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Decreasing the secretion of thyroid stimulating hormone (TSH) by the pituitary gland is not a compensatory response to fluid volume deficit. TSH primarily regulates thyroid function and metabolism, and its secretion is not directly related to fluid balance or osmolality.
Choice B rationale
Increasing renin-angiotensin-aldosterone system (RAAS) activity by the kidneys is the body’s primary compensatory response to fluid volume deficit. When there is a decrease in blood volume or blood pressure, the kidneys release renin, which activates the RAAS. This system increases the reabsorption of sodium and water in the kidneys, leading to an increase in blood volume and blood pressure.
Choice C rationale
Decreasing the secretion of cortisol by the adrenal gland is not a compensatory response to fluid volume deficit. Cortisol is a stress hormone that helps regulate metabolism, immune response, and other functions, but it is not directly involved in fluid balance.
Choice D rationale
Increasing the secretion of natriuretic peptides by the heart is a response to fluid overload, not fluid deficit. Natriuretic peptides promote the excretion of sodium and water by the kidneys, which helps reduce blood volume and pressure. This response is opposite to what is needed in a fluid volume deficit situation.
Correct Answer is B
Explanation
Choice A rationale
Administering vitamin B12 to increase RBC size is not appropriate in this scenario. The elevated MCV indicates macrocytic anemia, which is often due to vitamin B12 deficiency. The goal is to restore normal RBC maturation, not to increase RBC size.
Choice B rationale
Administering vitamin B12 to restore normal RBC maturation is the appropriate action. The elevated MCV indicates macrocytic anemia, which is often due to vitamin B12 deficiency.
Administering vitamin B12 will help restore normal RBC maturation and correct the anemia.
Choice C rationale
Administering medication to decrease RBC size is not appropriate in this scenario. The elevated MCV indicates macrocytic anemia, which is often due to vitamin B12 deficiency. The goal is to restore normal RBC maturation, not to decrease RBC size.
Choice D rationale
Administering iron to increase the formation of hemoglobin molecules is not appropriate in this scenario. The elevated MCV indicates macrocytic anemia, which is often due to vitamin B12 deficiency. Iron supplementation is typically used for microcytic anemia, not macrocytic anemia.
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