Which medications are used in hypovolemic shock in addition to fluids?

• A. Epinephrine and norepinephrine
• B. Norepinephrine and dopamine
• C. Dopamine and vasopressin
• D. Vasopressin and phenylephrine

Answer: (B)

In hypovolemic shock, restoring volume is the first priority, but when blood pressure remains low after fluids, vasopressors are added to maintain perfusion. Norepinephrine is the vasopressor of choice because it predominantly constricts veins and arteries (alpha-1 effect), increasing systemic vascular resistance and arterial pressure with only modest increases in heart rate. Dopamine provides inotropic support and, at higher doses, adds vasoconstriction, helping to boost cardiac output and raise blood pressure when fluids alone aren’t enough. Using norepinephrine with dopamine addresses both vascular tone and cardiac output, which is why this combination is used in addition to fluids to stabilize persistent hypovolemia. Other agents can be used in different circumstances, but the pairing of norepinephrine and dopamine aligns with the goal of rapidly restoring perfusion after volume expansion.