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18: Is mixing in lidocaine effective for preventing burning with propofol?

Depth of Anesthesia

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How to Modify the Free Aqueous Propofol Concentration

Pain with propofol infusion is mediated by capsaicin receptors. The free aqueous propofol concentration in the formulation is an important and modifiable factor in the mechanism. Under the right conditions, small amount of propofol dissolved directly in the aqueous carrier itself can diffuse into tissues quite rapidly to activate the trip B channels and produce pain.

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