Supraclavicular block — FRCA Primary MCQ
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Correct answer: E — Divisions of the brachial plexus
The divisions are closely packed at supraclavicular level. Internal jugular vein anterolateral to carotid artery is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Cricothyroid membrane is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. 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. 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