A nurse is caring for a client who has a peanut allergy. The client ate peanut butter and is now experiencing anaphylaxis. Which of the following physiological responses should the nurse expect to occur?
Blood pressure increases.
Blood vessels become more permeable.
Blood vessels constrict.
White blood cells are destroyed.
The Correct Answer is B
A. Blood pressure does not increase during anaphylaxis; instead, it typically decreases due to vasodilation and fluid leakage.
B. During anaphylaxis, blood vessels become more permeable, leading to the release of fluids into the tissues, which causes swelling and contributes to hypotension.
C. Blood vessels do not constrict during anaphylaxis; rather, they dilate as a part of the allergic response, resulting in decreased blood pressure.
D. While there is an immune response during anaphylaxis, white blood cells are not destroyed; rather, they are activated to respond to the allergen, leading to inflammation and other systemic effects.
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Correct Answer is A
Explanation
A. A phlebotomist collecting blood from clients who have HIV is at the greatest risk due to the potential for exposure to infected blood, especially if safety precautions are not properly followed.
B. A nurse working for an insurance company collecting urine samples is at a lower risk, as urine is not a primary mode of HIV transmission.
C. A personal trainer working with a client who has HIV may be at risk if there are open wounds, but the risk is less compared to healthcare workers directly handling blood.
D. An occupational therapist working with a client who has HIV may have some exposure risk, but it is significantly lower than that of a phlebotomist who handles blood samples.
Correct Answer is B
Explanation
A. Respiratory alkalosis is characterized by a high pH and low PaCO2, which is not evident in this scenario where the pH is low and PaCO2 is elevated.
B. The low pH of 7.3 indicates acidemia, and the elevated PaCO2 of 50 mm Hg suggests respiratory acidosis, where the body is retaining carbon dioxide, leading to an increase in acidity.
C. Metabolic acidosis would present with a low pH and a normal or decreased PaCO2, which is not the case here since the PaCO2 is elevated.
D. Metabolic alkalosis would show a high pH and elevated HCO3 levels, which is not consistent with the given ABG results.