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Speed of onset of local anaesthetics and another textbook correction!

Anaesthesia Coffee Break

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The Patient Initiated Assessment of Block Level

Small, myelinated axons are the most susceptible to impulse suppression. Next in order of block are the large myelinated a alpha and a beta fibers. And the least susceptible are the small, non myel-naded C fibers. In this last group imposters in the slowest conducting population, conduction velocity 0.5 to 0.8 meters per second are the most resistant to local anaesthetic.

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