Task: Answer Verification
Input (English): Question: Does ondansetron prevent pruritus induced by low-dose intrathecal fentanyl?
Answer: After prophylactic administration of 4 or 8 mg of ondansetron IV, the incidence, duration and severity of pruritus were similar to placebo. Ondansetron does not prevent pruritus induced by low-dose intrathecal fentanyl.
Output (English): no