The effect of warming local anaesthetic on the pain of injection during sub-Tenon's anaesthesia for cataract surgery |
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Authors: | Allen M J Bunce C Presland A H |
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Affiliation: | Clinical Fellow in Anaesthesia;, Medical Statistician;, Consultant Anaesthetist, Moorfields Eye Hospital NHS Foundation Trust, London, UK |
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Abstract: | In a double blind, randomised controlled trial, we examined the effect of warming local anaesthetic solutions on the pain experienced by patients undergoing a sub-Tenon's block for cataract surgery. In all, 140 patients were randomly allocated to receive either local anaesthetic stored at room temperature (control group) or local anaesthetic warmed to 37 °C (study group). Pain scores were assessed using a verbal analogue scale from 0 to 10. There was no significant difference in pain scores between the two groups. We conclude that the practice of warming local anaesthetic prior to performing a sub-Tenon's block does not significantly reduce the amount of pain experienced by patients. |
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