Which medication is beneficial for persistent hypotension after anaphylaxis?

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Multiple Choice

Which medication is beneficial for persistent hypotension after anaphylaxis?

In anaphylaxis the drop in blood pressure comes from widespread vasodilation and shifts of fluid out of the vessels. Fluids help, but if hypotension remains after initial fluid resuscitation, this is a situation where raising vascular tone becomes essential. Vasopressors constrict blood vessels and support blood pressure, improving perfusion to vital organs. They address the root of the persistent shock by increasing systemic vascular resistance, which is why they’re the best choice in this scenario. H2 blockers don’t provide rapid hemodynamic support; corticosteroids may help with potential biphasic reactions but don’t acutely raise blood pressure. A fluid bolus helps with volume status but may not normalize pressure when vasodilation is severe, so it isn’t sufficient on its own for persistent hypotension.

In anaphylaxis the drop in blood pressure comes from widespread vasodilation and shifts of fluid out of the vessels. Fluids help, but if hypotension remains after initial fluid resuscitation, this is a situation where raising vascular tone becomes essential. Vasopressors constrict blood vessels and support blood pressure, improving perfusion to vital organs. They address the root of the persistent shock by increasing systemic vascular resistance, which is why they’re the best choice in this scenario.

H2 blockers don’t provide rapid hemodynamic support; corticosteroids may help with potential biphasic reactions but don’t acutely raise blood pressure. A fluid bolus helps with volume status but may not normalize pressure when vasodilation is severe, so it isn’t sufficient on its own for persistent hypotension.

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