A randomized double-blind trial comparing the effect on pain of an oral sucrose solution versus placebo in children 1-3 months old needing bladder catheterization.

Objective: The efficacy of oral sweet solutions to decrease pain in infants during painful procedures remains uncertain. This study aimed to compare the efficacy of an oral sucrose solution versus placebo in reducing pain during bladder catheterization in infants in the Emergency Department (ED).

Methods: A randomized, double-blind clinical trial was conducted in a pediatric university-affiliated hospital ED. Infants 1-3 months old were recruited and randomly allocated to receive 2 ml of sucrose or placebo, 2 min before bladder catheterization. The primary outcome measure was the difference in pain scores as assessed by the Face, Legs, Activity, Cry and Consolability (FLACC) Pain Scale during procedure. Secondary outcome measures were the difference in pain scores using the Neonatal Infant Pain Scale (NIPS), crying time, variations in heart rate and adverse events.

Results: Eighty-three participants were recruited and completed the study, 41 and 42 in the sucrose and placebo groups, respectively. The mean difference in FLACC scores compared to baseline was 5.3 in the sucrose group vs. 6.4 in the placebo group during catheterization. There were no differences in FLACC scores or NIPS scores measured at 1, 3 and 5 min post procedure. Mean crying times were similar: 97 vs. 110 s. No significant difference was found in participants' heart rate variations. No adverse events were reported.

Conclusions: In infants undergoing bladder catheterization in the ED, administration of an oral sweet solution was not associated with lower pain as measured by the FLACC and NIPS scales. Participants' heart rate variations and crying times did not change when sucrose was provided.