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The effects of two different local anaesthetic solutions administered for oral surgery on plasma potassium levels in patients taking kaliuretic diuretics

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Summary

The effects of two different dental local anaesthetic solutions, administered for oral surgery, on the plasma potassium levels of patients taking non-potassium sparing diuretics has been investigated.

There was a significant reduction in plasma potassium concentration in eight subjects who received 4.4 ml of 2% lignocaine with 1:80 000 adrenaline; the mean reduction from baseline being 0.30 mmol·l−1 10 min following intra-oral extravascular injection of the local anaesthetic.

There was no significant difference from the pre-treatment plasma potassium concentration 10 min following similar injections of 3% prilocaine with 0.03 IU·ml−1 fely-pressin in 8 patients; the mean change in these subjects being −0.05 mmol·l−1.

It is suggested that the use of adrenaline-free local anaesthetics would seem to be appropriate in patients receiving kaliuretic diuretics.

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Meechan, J.G., Rawlins, M.D. The effects of two different local anaesthetic solutions administered for oral surgery on plasma potassium levels in patients taking kaliuretic diuretics. Eur J Clin Pharmacol 42, 155–158 (1992). https://doi.org/10.1007/BF00278476

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