spray is an effective analgesic of mucous membranes. Lidocaine
spray is also used during intravenous (i.v.) cannulation, especially in children. However, the analgesic effect of lidocaine
spray during i.v. cannulation has not been studied. We aimed to assess the analgesic effectiveness of lidocaine
spray during i.v. cannulation.
We conducted a randomized, double-blinded, placebo-controlled trial in seventeen healthy adults who received an i.v. cannulation in the right and left elbow, respectively, where the order of application of 60 mg lidocaine
10% pump spray) or placebo spray (chlorhexidine gluconate 0.5% in 70% alcohol base) before i.v. cannulation was randomized. Thus, each participant had an i.v. cannulation in both arms: one with lidocaine
spray and the other with placebo spray. The primary outcome was pain
intensity assessed by a 100 mm Visual Analogue Scale
. The secondary outcomes were adverse events, success rate of i.v. cannulation and the degree of difficulty of i.v. cannulation as estimated by the nurse performing the i.v cannulation.
score (Visual Analogue Scale
) during i.v. cannulation was 18.0 mm (interquartile range: 5.0–34.5 mm) after lidocaine
application and 21.0 mm (interquartile range: 11.0–30.5) after placebo application. These scores were not significantly different (95% confidence interval: −9.0–11.0, P
=0.698). No adverse events occurred and all i.v. cannulations were successful at first attempt.
Local administration of lidocaine
is not effective in reducing pain
during i.v. cannulation.