NCT07495826

Brief Summary

Procedural sedation for children outside of the operating room is a common practice in emergency departments, outpatient clinics, radiology suites, and dental offices for painful and anxiety-provoking procedures. However, there is emerging evidence that so-called "delayed maladaptive behaviors" (disordered sleep, anxiety, and aggression) affect nearly a quarter of children for up to 2 weeks following sedation. This can lead to poor school attendance, reduced extracurricular involvement, disruptions to caregivers' employment obligations, and poor patient satisfaction. As this phenomenon has only recently been identified, very little is known about what factors predispose children to delayed maladaptive behaviors, however, small studies suggest younger age and pre-procedural anxiety may be involved. The aim of our study is to characterize risk factors for delayed maladaptive behavior in a large multicentre study involving emergency departments, dental offices, and hospital sedation services. Understanding these risk factors may help healthcare workers prevent delayed maladaptive behaviors and provide patients with anticipatory guidance, akin to post-operative recovery instructions. There is emerging evidence that maladaptive behaviors, including significant negative behavioral changes, can occur in children following procedural sedation. These include disordered sleep, anxiety, and aggression)1,2 and affect up to 24% of children following inhalational anesthetics3 and intravenous sedatives such as ketamine.1 Moreover, these appear to be more pronounced in children \<4 years4 and can persist for up to 2 weeks post-sedation. Unfortunately, only two trials have reported delayed maladaptive behaviors.1,2 Data on immediate and delayed AEs are urgently needed for safe clinical decision-making and anticipatory guidance surrounding ED anxiolytics. In a prospective cohort study of children undergoing emergency department procedural sedation with intravenous ketamine, 22% exhibited significant negative behavioral changes 1-2 weeks after discharge, as measured by the Post-Hospitalization Behavior Questionnaire. High pre-procedure anxiety have been identified as independent predictors of these maladaptive behaviors.5 Additionally, irritability, hyperactivity, and hallucinations during recovery have been reported and are associated with lower parental satisfaction.6

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
2,145

participants targeted

Target at P75+ for all trials

Timeline
48mo left

Started Mar 2026

Longer than P75 for all trials

Geographic Reach
1 country

2 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress6%
Mar 2026May 2030

Study Start

First participant enrolled

March 18, 2026

Completed
1 day until next milestone

First Submitted

Initial submission to the registry

March 19, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

March 27, 2026

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2029

Expected
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 30, 2030

Last Updated

March 27, 2026

Status Verified

March 1, 2026

Enrollment Period

3.8 years

First QC Date

March 19, 2026

Last Update Submit

March 24, 2026

Conditions

Keywords

procedural sedationpediatricsmaladaptive behaviorpain

Outcome Measures

Primary Outcomes (1)

  • Post-Hospital Behavior Questionnaire for Ambulatory Surgery (PHBQ-AS)

    The PHBQ-AS is a caregiver-reported 11-item measure of post-hospitalization behavioral changes. The PHBQ-AS is a revision of the original PHBQ with 11 items, no subscales, and a different scoring approach that treats behavioral change as a continuous overall construct, based on average item scores, rather than relying on a count of "severe" behaviors or a threshold meant to imply clinical severity. To score the PHBQ-AS, items are averaged by summing the items for each respondent and dividing by the total number of items. The total PHBQ-AS score produces a continuous variable with higher values above 3 (the midpoint) indicating greater maladaptive behavioral changes, lower values below 3 indicating improvements in behavioral change, and values equal to 3 indicating no behavioral change. A cut-off score of 3.2 on the PHBQ-AS for the diagnosis of negative behavior has been published.33 The original PHBQ was designed to measure behavior changes after surgery or hospitalization, and has be

    3 days

Secondary Outcomes (1)

  • PHBQ

    Days 1, 7, 10, and 14

Study Arms (1)

Procedural sedation or anxiolysis

Children and adolescents 1-17 years undergoing procedural sedation or anxiolysis with any agent for any indication in the ED and dental clinics.

Eligibility Criteria

Age1 Year - 17 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)
Sampling MethodProbability Sample
Study Population

Children and adolescents 1-17 years undergoing procedural sedation or anxiolysis with any agent for any indication in the ED and dental clinics

You may qualify if:

  • Children and adolescents 1-17 years undergoing procedural sedation or anxiolysis with any agent for any indication in the ED and dental clinics

You may not qualify if:

  • Patients where the primary caregiver lacks English or French (if applicable to site) comprehension in the absence of a native language interpreter
  • Lack a smartphone able to receive SMS text messages
  • Caregiver and/or patient are not available for all of the planned follow-up dates
  • Previously enrolled in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

London Health Sciences Centre

London, Ontario, N6A5W9, Canada

RECRUITING

London Health Sciences Centre

Londo, Ontario, N6A5W9, Canada

RECRUITING

MeSH Terms

Conditions

AgnosiaPain

Condition Hierarchy (Ancestors)

Perceptual DisordersNeurobehavioral ManifestationsNeurologic ManifestationsNervous System DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Naveen Poonai, MD MSc

    Western University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

March 19, 2026

First Posted

March 27, 2026

Study Start

March 18, 2026

Primary Completion (Estimated)

December 31, 2029

Study Completion (Estimated)

May 30, 2030

Last Updated

March 27, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will not share

This was not specified in the ethics application.

Locations