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Answer :
Final answer:
Option 4 stating 'The skin is cold and shows pallor' is FALSE concerning anaphylactic shock. Instead, anaphylactic shock typically leads to warm, red skin due to vasodilation. The correct understanding of anaphylactic shock includes decreased blood volume and vascular resistance. The correct option is (4).
Explanation:
Anaphylactic shock is a severe and life-threatening reaction to an allergen characterized by a systemic response with multiple symptoms. One of the false statements concerning anaphylactic shock is that the skin is cold and shows pallor; this is incorrect as patients often develop warm, red skin, also known as erythema, due to the vasodilation of blood vessels.
During anaphylactic shock, blood volume is indeed diminished because of increased capillary permeability, resulting in capillary leakage and fluid loss into the interstitial spaces, which contributes to hypotension. The body's response also includes decreased vascular resistance and the heart's stroke volume (SV), due to systemic vasodilation and impaired cardiac function, respectively.
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