PMID: 11318769Apr 25, 2001Paper

A dose-response study of adrenaline combined with lignocaine 2%: effect on acute postoperative pain after oral soft tissue surgery

British Journal of Clinical Pharmacology
L Jorkjend, L A Skoglund

Abstract

The combination of lignocaine and adrenaline may cause more postoperative pain than other types of local anaesthetic agents with comparable clinical efficacy. This study investigates the dose-response effect of adrenaline added to lignocaine on postoperative pain, when used as local anaesthetic for oral soft tissue surgery. A controlled, randomized, double-blind, parallel group study included 195 patients (108 females/87 males) with mean age 49 years (range 26-75 years). The patients were allocated to one of three treatment groups receiving lignocaine 2% (n = 66), lignocaine 2% with adrenaline 1 : 160 000 (n = 63) or lignocaine 2% with adrenaline 1 : 80 000 (n = 66). Lignocaine 2% with adrenaline 1 : 80 000 gave significantly more pain intensity than lignocaine 2% or lignocaine 2% with adrenaline 1 : 160 000. The postoperative pain intensity courses after lignocaine 2% and lignocaine 2% with adrenaline 1 : 160 000 showed a similar pattern except for the time period just after completion of surgery when lignocaine 2% with adrenaline 1 : 80 000 caused less pain. High adrenaline concentrations (1 : 80 000) combined with lignocaine local anaesthetic solution offers no advantage with respect to pain alleviation during the immediate ...Continue Reading

References

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