[2025-10-02T09:10:14.566387] [QUERYOME] Starting research for query 2468: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
What is the rise of blood flow if the radius of blood vessels is increased by 50%?

Options:
A. 5 times
B. 10 times
C. 20 times
D. 100 times'
[2025-10-02T09:10:14.606696] [PI] Starting research for query: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
What is the rise of blood flow if the radius of blood vessels is increased by 50%?

Options:
A. 5 times
B. 10 times
C. 20 times
D. 100 times'
[2025-10-02T09:10:14.609337] Saving text to bench_final/run1/medmcqa/medmcqa_4028/pi_initial_prompt.txt
[2025-10-02T09:10:14.613965] [PI] Calling o3 for initial analysis...
[2025-10-02T09:10:24.965066] [PI] Reasoning iteration 1
[2025-10-02T09:10:24.967564] [PI reasoning] **Evaluating blood flow increase**

I need to determine how much blood flow rises if the radius of blood vessels increases by 50%. According to Poiseuille's Law, flow is proportional to the radius raised to the fourth power. If I take the new radius as 1.5 times the original, the flow increases roughly fivefold. Thus, I’ll choose option A: 5 times. I still need to provide a citation from a medical physiology source, perhaps something by Guyton and Hall. I'll search for that article.
[2025-10-02T09:10:24.969833] [PI] Executing function call 1: hybrid_search
[2025-10-02T09:10:24.972510] [PI] Function arguments: {'query': 'blood flow proportional to fourth power of vessel radius poiseuille law', 'k': 5, 'faiss_weight': 0.6, 'bm25_weight': 0.4, 'use_rrf': True}
[2025-10-02T09:10:24.974274] Saving JSON to bench_final/run1/medmcqa/medmcqa_4028/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-02T09:10:26.093722] [PI] Function hybrid_search executed successfully
[2025-10-02T09:10:26.096168] Saving JSON to bench_final/run1/medmcqa/medmcqa_4028/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-02T09:10:26.112001] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T09:10:33.937445] [PI] Reasoning iteration 2
[2025-10-02T09:10:33.941904] [PI] No function calls found in response
[2025-10-02T09:10:33.943510] [PI] No more function calls - research complete
[2025-10-02T09:10:33.946094] Saving text to bench_final/run1/medmcqa/medmcqa_4028/pi_final_answer.txt
[2025-10-02T09:10:33.951821] [QUERYOME] Query completed successfully
