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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View Related questions
Correct Answer is B
Explanation
A. Increased systemic vascular resistance is typically associated with hypovolemic or cardiogenic shock, not distributive shock.
B. Distributive shock is characterized by systemic vasodilation, which leads to a decrease in systemic vascular resistance and results in inadequate tissue perfusion despite normal or increased cardiac output.
C. Loss of myocardial contractility is related to cardiogenic shock, not distributive shock.
D. Loss of blood volume is a characteristic of hypovolemic shock, whereas distributive shock occurs even when blood volume is normal due to vasodilation.
Correct Answer is A
Explanation
A. Respiratory acidosis is characterized by a low pH (7.32) and an elevated PaCO2 (48 mm Hg), indicating that the body is unable to eliminate CO2 effectively, leading to acid retention. The HCO3 level is within normal limits, suggesting that there is not a metabolic compensation occurring yet.
B. Metabolic alkalosis would present with a high pH and elevated bicarbonate levels, which is not the case here.
C. Respiratory alkalosis typically shows a high pH and low PaCO2, indicating hyperventilation, which does not align with the current findings.
D. Metabolic acidosis would show a low pH with a low HCO3, which is not supported by the HCO3 level of 23 mEq/L in this case.