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Trial of One Versus Two Doses of Dexamethasone for Pediatric Asthma Exacerbation

A Randomized Double Blinded Placebo Controlled Trial of One Versus Two Doses of Oral Dexamethasone for the Treatment of Acute Asthma Exacerbation in the Pediatric Emergency Department (ED)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02725008
Acronym
R2D2
Enrollment
99
Registered
2016-03-31
Start date
2015-11-30
Completion date
2017-11-30
Last updated
2019-02-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Asthma

Keywords

Asthma, Pediatric, Emergency Department, Dexamethasone, Steroid

Brief summary

Comparing one versus two doses of oral dexamethasone for the treatment of asthma in the pediatric emergency department.

Detailed description

A randomized double blinded placebo controlled trial comparing one dose of dexamethasone administered in the Emergency Department with two doses, the first given in the emergency department and the second 24 hours after the index ED visit.

Interventions

DRUGDexamethasone
DRUGplacebo

to be given to the experimental group on the day after discharge from the ED in lieu of the second dose of dexamethasone

Sponsors

Geoffrey W Jara-Almonte
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Months to 20 Years
Healthy volunteers
No

Inclusion criteria

* History of asthma defined as at least two (2) prior episodes of respiratory illness characterized by wheezing treated with inhaled beta agonists

Exclusion criteria

* pregnancy * severe chronic cardiac, respiratory, neurological or neuromuscular disease * complete resolution of symptoms after one treatment of beta agonists * severe asthma symptoms as defined by a Pulmonary Index Score of 12 or greater

Design outcomes

Primary

MeasureTime frameDescription
Treatment Failure5 daysnumber of patients who experience any of the following outcomes - unplanned hospital admission for asthma symptoms, unplanned ED visit for asthma symptoms, unplanned urgent care visit for asthma symptoms, unplanned primary care physician visit for asthma symptoms, or prescription of a course of steroids

Secondary

MeasureTime frameDescription
Change in Symptom Severity From Day 1 to Day 55 daysSeverity of asthma symptoms as reported by the Patient Self Assessment Score. Patients assessed severity of asthma symptoms in 4 categories (wheezing, coughing, activity and sleep) once per day during the 5 days between study enrollment and follow-up. Score range is 0 - 12 with 0 being mildest symptoms and 12 being most severe symptoms. Reported as change in score between enrollment (day 1) and follow-up (day 5).

Countries

United States

Participant flow

Recruitment details

Pediatric Emergency Department

Pre-assignment details

99 participants were enrolled, 2 participants underwent initial enrollment but were not randomized to a group, leaving 97 participants who were assigned to a study group.

Participants by arm

ArmCount
Control
Patients are given one dose of oral dexamethasone 0.6 milligrams per kilogram up to 16 milligrams in the ED and a second dose of 0.6 milligrams per kilogram up to 16 milligrams to take 24 hours after ED visit Dexamethasone
46
Investigational
Patients are given one dose of oral dexamethasone 0.6 milligrams per kilogram up to 16 milligrams in the ED and placebo to be taken 24 hours after ED visit Dexamethasone placebo: to be given to the experimental group on the day after discharge from the ED in lieu of the second dose of dexamethasone
51
Total97

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdmitted to hospital01
Overall StudyLost to Follow-up79
Overall StudyWithdrawal by Subject22

Baseline characteristics

CharacteristicInvestigationalTotalControl
Age, Continuous7 years
STANDARD_DEVIATION 5.4
8.4 years
STANDARD_DEVIATION 5.7
9.4 years
STANDARD_DEVIATION 6
PIS Score
PIS Score at ED arrival
5 units on a scale
STANDARD_DEVIATION 2.85
4 units on a scale
STANDARD_DEVIATION 2.53
4 units on a scale
STANDARD_DEVIATION 2
PIS Score
PIS Score at End of ED Stay
1 units on a scale
STANDARD_DEVIATION 1.09
1 units on a scale
STANDARD_DEVIATION 1.23
2 units on a scale
STANDARD_DEVIATION 1.35
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
31 Participants55 Participants24 Participants
Race (NIH/OMB)
More than one race
2 Participants2 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants6 Participants3 Participants
Race (NIH/OMB)
White
15 Participants34 Participants19 Participants
Region of Enrollment
United States
51 participants97 participants46 participants
Sex: Female, Male
Female
19 Participants31 Participants12 Participants
Sex: Female, Male
Male
32 Participants66 Participants34 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 461 / 51
other
Total, other adverse events
1 / 461 / 51
serious
Total, serious adverse events
1 / 461 / 51

Outcome results

Primary

Treatment Failure

number of patients who experience any of the following outcomes - unplanned hospital admission for asthma symptoms, unplanned ED visit for asthma symptoms, unplanned urgent care visit for asthma symptoms, unplanned primary care physician visit for asthma symptoms, or prescription of a course of steroids

Time frame: 5 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ControlTreatment Failure6 Participants
InvestigationalTreatment Failure3 Participants
p-value: 0.395% CI: [0.54, 10.07]Chi-squared
Secondary

Change in Symptom Severity From Day 1 to Day 5

Severity of asthma symptoms as reported by the Patient Self Assessment Score. Patients assessed severity of asthma symptoms in 4 categories (wheezing, coughing, activity and sleep) once per day during the 5 days between study enrollment and follow-up. Score range is 0 - 12 with 0 being mildest symptoms and 12 being most severe symptoms. Reported as change in score between enrollment (day 1) and follow-up (day 5).

Time frame: 5 days

Population: Participants who had complete data available for analysis

ArmMeasureValue (MEDIAN)Dispersion
ControlChange in Symptom Severity From Day 1 to Day 5-4 score on a scaleStandard Deviation 3.39
InvestigationalChange in Symptom Severity From Day 1 to Day 5-4 score on a scaleStandard Deviation 3.29
p-value: 0.95t-test, 2 sided

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026