Which vasopressor is commonly preferred to treat spinal anesthesia-associated hypotension and why?

Which vasopressor is commonly preferred to treat spinal anesthesia-associated hypotension and why?

• A. Epinephrine; increases CO and BP.
• B. Phenylephrine; pure alpha-1 agonist increasing SVR with minimal chronotropic effect.
• C. Norepinephrine; increases both alpha and beta effects.
• D. Dopamine; dose-dependent effects.

Answer: (B)