Lumbar epidural space — FRCA Primary MCQ
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Correct answer: A — Epidural space
The epidural space contains fat and venous plexus outside dura. Median nerve is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Tibial and common fibular nerves is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Femoral nerve is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Intercostobrachial nerve 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