Supraclavicular Block Pneumothorax Risk — FRCA Final MCQ

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ModerateRegional AnaesthesiaSupraclavicular Block Pneumothorax RiskFRCA Final

During supraclavicular brachial plexus block, which structure lies immediately deep and posterior, at greatest risk of puncture?

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Correct answer: C — Pleural dome

At supraclavicular level, the pleural dome lies deep and posterior to the brachial plexus/subclavian artery on the first rib. Pneumothorax is the most significant complication. First rib is the safety backstop on ultrasound.

Reference: ESRA – 2023 – Ultrasound-guided peripheral nerve blocks