Efficacy of Buzzy Device Versus EMLA Cream for Reducing Pain during Needle-Related Procedures in Children: A Randomized Controlled Trial

Abstract

Objectives Several pain management tools exist but with limitations in their efficacy or applicability. The EMLA (eutectic mixture of local anesthetics) cream is currently used for pain relief for needle-related procedures; however, it needs a minimum of 30 to 45 minutes to be effective. The Buzzy is a device that generates vibrations with cold leading to quicker pain relief. Our aim was to evaluate the effect of the Buzzy device in pain and anxiety reduction compared with EMLA cream in children requiring intravenous cannulation or venepuncture.

Methods This was a randomized clinical trial comparing pain and anxiety reduction by Buzzy device with the standard care (EMLA cream) in children aged 2 to 14 years who required blood extraction or intravenous cannulation based on their clinical needs. Eligible patients were randomized to either Buzzy device as the intervention or EMLA cream as the control. The outcome measures were the degree of pain scores and anxiety ratings at different stages of the needle-related procedures.

Results A total of 300 patients with a mean age of 6.5 ± 3.1 years were enrolled. Baseline characteristics were similar between the Buzzy device and EMLA cream groups. The observed pain scores by research nurses and a parent were significantly lower in the EMLA group compared with the Buzzy device group; however, the pain scores by the self-assessment scale were not statistically significant with mean difference of −0.332, 95% confidence interval, −0.635 to −0.028 (P = 0.062). The level of anxiety was significantly lower in EMLA compared with Buzzy device (P = 0. 0.0001). Both staff and parents' satisfaction, success rate of cannulation, type of blood tests, and comment on the physician on the results were similar in both groups.

Conclusions Pain and anxiety relief using the Buzzy device is not as effective as EMLA cream in children requiring venepuncture. However, rapid onset of action of the Buzzy device is valuable in decreasing waiting time in a busy emergency department.

Trial Registration clinicaltrials.gov Identifier: NCT05354739.