Epinephrine is a critical treatment for patients with severe allergic reactions (anaphylaxis) because it:
A. directly blocks the endogenous chemicals that are responsible for the negative effects of the allergic reaction.
B. markedly increases the patient's heart rate and improves perfusion to the brain, kidneys, and myocardium.
C. works rapidly to raise the BP by constricting the vasculature and improves ventilation by dilating the bronchioles.
D. does not increase myocardial oxygen demand and consumption as if it were given to patients with other conditions.
Answer: C. works rapidly to raise the BP by constricting the vasculature and improves ventilation by dilating the bronchioles.
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