A randomized controlled pilot study of intranasal lidocaine in acute management of paediatric migraine and migraine-like headache

Kate Maki, Quynh Doan, Kendra Sih, Karly Stillwell, Alaina Chun, Garth Meckler

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives: This study was aimed to determine the sample size required to conduct an efficacy randomized controlled trial (RCT) to evaluate superiority of intranasal (IN) lidocaine to placebo as an analgesic option for children presenting to the paediatric emergency department (PED) with migraine or posttraumatic headache with migraine features and to evaluate study protocol feasibility. Study Design: This study is a double-blind RCT of children aged 7 to 16 years at a single-centre PED. Thirty-two participants were randomized to receive either IN 2% lidocaine or 0.9% sodium chloride. The primary outcome measure was the proportion of subjects with a Verbal Numeric Rating Scale pain score of <4 at 30 and 60 minutes post-IN therapy. Primary outcome data were analyzed using a test of differences between proportions. Secondary objectives included assessing the feasibility of our study protocol by evaluating recruitment rates, adverse drug events, and PED length of stay (LOS). Results: Six of 17 participants in the lidocaine group and 2 of 15 in the placebo group were treated successfully. Using these proportions with 95% confidence intervals and 80% power, the sample size required to find a significant difference between proportions would be 67 participants per arm. Our enrolment rate was 55% and there were no serious adverse drug events. The median PED LOS was similar between groups. Conclusion: We determined the sample size required to conduct a definitive RCT to evaluate the superiority of IN lidocaine to placebo and found the study protocol is feasible but identified important considerations in PED migraine trial design.

Original languageEnglish (US)
Pages (from-to)340-345
Number of pages6
JournalPaediatrics and Child Health (Canada)
Volume27
Issue number6
DOIs
StatePublished - Oct 1 2022
Externally publishedYes

Keywords

  • Emergency
  • Headache
  • Intranasal
  • Lidocaine
  • Migraine

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

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