Palmar index finger numbness — FRCA Primary MCQ
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Correct answer: A — Median nerve
The median nerve supplies palmar radial digits. Ulnar nerve is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Saphenous nerve is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Pleural dome near subclavian vein is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Femoral and lateral femoral cutaneous nerves is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. In Primary FRCA anatomy, the tested structure should explain the block, airway sign or regional complication in the stem.
Reference: Ellis, Feldman & Harrop Anatomy for Anaesthetists; Primary FRCA textbooks