[2025-10-02T06:39:59.731234] [QUERYOME] Starting research for query 2140: '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:
Scaphoid fracture at waist with retrograde blood supply. Which segment is most susceptible to avascular necrosis?

Options:
A. Proximal
B. Distal
C. Middle
D. Scaphoid tubercle'
[2025-10-02T06:39:59.771823] [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:
Scaphoid fracture at waist with retrograde blood supply. Which segment is most susceptible to avascular necrosis?

Options:
A. Proximal
B. Distal
C. Middle
D. Scaphoid tubercle'
[2025-10-02T06:39:59.773645] Saving text to bench_final/run1/medmcqa/medmcqa_3700/pi_initial_prompt.txt
[2025-10-02T06:39:59.779280] [PI] Calling o3 for initial analysis...
[2025-10-02T06:40:05.408250] [PI] Reasoning iteration 1
[2025-10-02T06:40:05.410945] [PI reasoning] **Researching scaphoid fractures**

I need to answer a multiple-choice question about scaphoid fractures, specifically noting that fractures at the waist are common. Since the blood supply to the scaphoid is retrograde, meaning blood enters from the distal pole and flows proximally, the proximal segment is more at risk for avascular necrosis after a waist fracture. So, the answer is “proximal.” Now, I'll look for relevant evidence to support this reasoning.
[2025-10-02T06:40:05.415482] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:40:05.416875] [PI] Function arguments: {'query': 'scaphoid fracture waist retrograde blood supply proximal pole avascular necrosis', 'k': 5, 'faiss_weight': 0.6, 'bm25_weight': 0.4, 'use_rrf': True}
[2025-10-02T06:40:05.419179] Saving JSON to bench_final/run1/medmcqa/medmcqa_3700/pi_iteration_1_tool_call_3_hybrid_search.json
[2025-10-02T06:40:06.532700] [PI] Function hybrid_search executed successfully
[2025-10-02T06:40:06.536004] Saving JSON to bench_final/run1/medmcqa/medmcqa_3700/pi_iteration_1_tool_result_3_hybrid_search.json
[2025-10-02T06:40:06.542585] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:40:14.311188] [PI] Reasoning iteration 2
[2025-10-02T06:40:14.312826] [PI] No function calls found in response
[2025-10-02T06:40:14.317466] [PI] No more function calls - research complete
[2025-10-02T06:40:14.319300] Saving text to bench_final/run1/medmcqa/medmcqa_3700/pi_final_answer.txt
[2025-10-02T06:40:14.341355] [QUERYOME] Query completed successfully
