209
19–22 APRIL, 2017, BARCELONA, SPAIN
17:20–17:23
S19-8 (PP)
LIDOCAINE GEL FOR URETHRAL CATHETERIZATION
IN CHILDREN: A META-ANALYSIS
Paul Nimrod FIRAZA
1
, Michael CHUA
2
, Jessica MING
3
, Jan Michael SILANGCRUZ
4
and Armando LORENZO
2
1) Jose R. Reyes Memorial Medical Center, Department of Urology, Manila, PHILIPPINES - 2) The Hospital for
Sick Children, Division of Urology, Toronto, CANADA - 3) Hospital for Sick Children, Urology, Toronto, CANADA -
4) St. Luke’s Medical Center, Institute of Urology, Quezon City, PHILIPPINES
PURPOSE
Lidocaine gel can be used as a lubricating agent to reduce any pain or discomfort during urethral
catheterization in children; however, studies have shown conflicting results. Herein, we aim to
determine the efficacy and safety of lidocaine gel versus controls in this population.
MATERIAL AND METHODS
Systematic literature search was done up to September 2016 (PROSPERO CRD42016050018).
Risks of bias were assessed according to the Cochrane collaboration recommendations. The
pain scale assessment scores used in the studies were extracted as mean differences (MD) and
standard deviations for each treatment group. For between group estimation, standardized mean
difference (SMD) was extrapolated with 95% confidence interval (CI). Effect estimates were pooled
using the inverse variance method with appropriate meta-regression model according to inter-study
heterogeneity. Inter-study heterogeneity was assessed using Chi
2
and I
2
. Subgroup analyses were
performed for different age ranges.
RESULTS
Five studies (369 subjects) were eligible for the meta-analysis. Overall, pooled effect estimates
show that lidocaine gel has no significant difference in decreasing catheterization associated pain in
children when compared to controls (SMD-0.22, 95%CI-0.66 to 0.21). Effect estimates from 4 stud-
ies that studied children less than 4 year old, revealed no difference in pain reduction between the
lidocaine gel and control groups (SMD 0.01, 95%CI 0-0.22 to 0.24). One study assessed children
ages 4 years or older and showed a significant improvement on pain control in favour of lidocaine
gel group (SMD-1.84, 95%CI-0.69 to 0.20). No serious adverse events from the lidocaine were
reported in any of the studies.
CONCLUSIONS
Current evidence showed that lidocaine gel does not reduce urethral catheterization pain in children,
particularly among the age group.