Task: Answer Verification
Input (English): Question: Does fludrocortisone prevent orthostatic hypotension in astronauts after spaceflight?
Answer: Treatment with a single dose of fludrocortisone results in protection of plasma volume but no protection of orthostatic tolerance. Fludrocortisone is not recommended as a countermeasure for spaceflight-induced orthostatic intolerance.
Output (English): no