ClinicalTrials.gg
TerminatedNCT03262038Updated Jan 19, 2021Results posted

Does IV Ondansetron Prevent Pruritus After Intrathecal Morphine in Pediatric Patients?

A Phase 4 interventional study of Ondansetron and Placebo Comparator in Pruritus and Nausea/Vomiting, sponsored by University of Michigan. Terminated at 1 site in United States. Open to participants aged 3 Years to 17 Years. Per ClinicalTrials.gov, last updated 2021-01-19.

Sponsored by University of Michigan · Phase 4, Interventional, and Prevention

Why this study was terminated
Interim analysis showed no difference between groups

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Phase 4
Study type
Interventional
Enrollment
46
Allocation
Randomized
Ages
3 Years to 17 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 163 studies in Pruritus with a site in United States — 24 open to participants now, 28 under way, 8 of them phase 3. Pruritus · United States.

Enrollment
101st of 153
46 · median 70
Started
2017
with 10 others
Phase 4
13 of 163
1 open now
Registered
65th of 163
by date

Among the 163 studies in Pruritus with a site in United States, this one is the 101st largest by enrollment of the 153 interventional ones that give a count, is one of 11 that started in 2017, is one of 13 in phase 4, and was the 65th registered.

Pruritus

491 studies on the registry are indexed under Pruritus; 94 are open to participants now.

Browse Pruritus studies →

Open to participants now

24 of the 163 studies in Pruritus with a site in United States are open now. Recruiting first, the newest first:

19 more — sign in →

All 24 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 54 Pruritus studies recruiting now, 22 (41%) set no upper age limit and 24 (44%) stop at 75 or younger; 15 take children under 18; 10 take healthy volunteers.

This study: 3 Years to 17 Years · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 163 studies in Pruritus with a site in United States, or all of them as a file.
02

Study summary

This is a prospective randomized, double-blind, placebo-controlled study to compare the incidence and intensity of ITM-induced pruritus and nausea/vomiting using pre-emptive IV ondansetron, followed by scheduled Around The Clock (ATC) ondansetron vs. our control group, where pruritus and PONV are treated with PRN only medications.

Read the detailed description

Pruritus is one of the most common and bothersome side effects of intrathecal morphine (ITM) in children, with a reported incidence of 30-60%. Clinicians, who have witnessed unbearable itching and scratching in their young patients after intrathecal morphine, may be reluctant to offer this effective pain control to future patients, for fear of these unpleasant sequelae. A study previously found a 40% incidence of pruritus in young children who received intrathecal morphine for major urologic surgery.

This is a prospective randomized, double-blind, placebo-controlled study to compare the incidence and intensity of ITM-induced pruritus and nausea/vomiting using pre-emptive IV ondansetron, followed by scheduled Around The Clock (ATC) ondansetron vs. control group, where pruritus and PONV are treated with PRN only medications.

Enrollment of 3-17 year olds who are undergoing urologic or orthopedic operative procedures who are scheduled to receive low dose (4-5 mcg/kg) intrathecal morphine for pain management.

03

Conditions studied

  • Pruritus
  • Nausea/Vomiting

Keywords

  • intrathecal morphine
04

Who can participate

Ages eligible
3 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 3-17 years
  • weight \</= 100kg
  • scheduled for urologic or orthopedic procedure necessitating intrathecal morphine
  • ability to use verbal or pictorial pain assessment tools and techniques
  • and (if applicable) assent

Exclusion criteria

Exclusion Criteria:

  • Inability to use verbal or pictorial pain scoring scales
  • to selective 5-HT receptor antagonists
  • diagnosed congenital long syndrome
  • severe hepatic impairment
  • pregnancy or nursing mothers
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
46 participants (actual)

Study arms

  • Experimental
    Ondansetron IV

    Ondansetron IV X1 intraoperatively (0.1 mg/kg in 5 mLs) Ondansetron IV X 4 (Q 6 hrs for 24 hrs) (0.1 mg/kg in 5 mLs)

    Drug: Ondansetron

  • Placebo comparator
    Placebo

    Placebo Comparator: This arm will receive (in a blinded fashion) a volume-matched placebo intraoperatively X1 as well as IV every 6 hrs for 24 hours postoperatively. (X4)

    Drug: Placebo Comparator

Interventions

  • This arm will receive (in a blinded fashion) 0.1 mg/kg of Ondansetron IV made up to 5 mLs intra-operatively and Ondansetron IV 0.1 mg/kg made up to 5 mLs every 6 hours for 24 hours postoperatively.

  • DrugPlacebo Comparator

    This arm will receive (in a blinded fashion) a volume-matched placebo intraoperatively as well as IV every 6 hrs for 24 hours postoperatively.

06

What researchers measure

Primary outcomes

  1. Incidence of Pruritus

    number of participants with any incidence of pruritus

    Time frame: 24 hours

  2. Severity of Pruritus

    number of participants who indicated mild pruritus (no treatment needed) or severe pruritus (treatment needed)

    Time frame: 24 hours

Secondary outcomes

  1. Incidence of Post Operative Nausea or Vomiting

    number of participants with any incidence of postoperative nausea or vomiting

    Time frame: 24 hours

  2. Severity of Post Operative Nausea or Vomiting

    number of participants who Indicated mild post operative nausea or vomiting (no treatment needed) or severe postoperative nausea or vomiting(treatment needed)

    Time frame: 24 hours

07

Results

Posted Jan 19, 2021

Participant flow

Participant flow — Overall Study
MilestoneOndansetron IVPlacebo
Started1828
Completed1827
Not completed01
Withdrew: Withdrawal by subject01

Outcome measures

PrimaryIncidence of Pruritus

number of participants with any incidence of pruritus

Time frame:
24 hours
Reported as:
Count of participants · Participants
Incidence of Pruritus
ParticipantsOndansetron IVPlacebo
Incidence of Pruritus1424
Statistical analysis
  • Ondansetron IV vs Placebo · Chi-squared · p = .412
PrimarySeverity of Pruritus

number of participants who indicated mild pruritus (no treatment needed) or severe pruritus (treatment needed)

Time frame:
24 hours
Reported as:
Count of participants · Participants
Severity of Pruritus
ParticipantsOndansetron IVPlacebo
Mild / no treatment needed14
Severe / requiring treatment1320
Statistical analysis
  • Ondansetron IV vs Placebo · Chi-squared · p = .633
SecondaryIncidence of Post Operative Nausea or Vomiting

number of participants with any incidence of postoperative nausea or vomiting

Time frame:
24 hours
Reported as:
Count of participants · Participants
Incidence of Post Operative Nausea or Vomiting
ParticipantsOndansetron IVPlacebo
Incidence of Post Operative Nausea or Vomiting823
Statistical analysis
  • Ondansetron IV vs Placebo · Chi-squared · p = .007
SecondarySeverity of Post Operative Nausea or Vomiting

number of participants who Indicated mild post operative nausea or vomiting (no treatment needed) or severe postoperative nausea or vomiting(treatment needed)

Time frame:
24 hours
Reported as:
Count of participants · Participants
Severity of Post Operative Nausea or Vomiting
ParticipantsOndansetron IVPlacebo
Mild / no treatment required24
Severe / requiring treatment619
Statistical analysis
  • Ondansetron IV vs Placebo · Chi-squared · p = .634

Adverse events

Collected over Adverse events were tracked through hospital discharge (approximately 24 hours). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Ondansetron IV0/18 (0%)0/18 (0%)0/18 (0%)
Placebo0/27 (0%)0/27 (0%)0/27 (0%)

Baseline characteristics

Age, Customized
Age, Customized(years)Ondansetron IVPlaceboTotal
Mean8.3 (3.5 to 17.1)8.2 (3.7 to 16.7)8.3 (3.5 to 17.1)
Sex: Female, Male
Sex: Female, Male(Participants)Ondansetron IVPlaceboTotal
Female121729
Male61016
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Ondansetron IVPlaceboTotal
Count of participants——0
Weight
Weight(kg)Ondansetron IVPlaceboTotal
Mean30.4 (16.4 to 64.8)34.0 (14.5 to 91.4)32.5 (14.5 to 91.4)
ASA 1, 2
ASA 1, 2(Participants)Ondansetron IVPlaceboTotal
Count of participants152742
Surgical Service
Surgical Service(Participants)Ondansetron IVPlaceboTotal
Urology142236
Orthopedics459
08

Study locations

1 site
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2017 to primary completion in Aug 2019, 20 months.

Results were first posted in Jan 2021, 1 year 4 months after primary completion. A results delay was requested in Aug 2020.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 23, 2017
First posted
Aug 25, 2017
StartActual
Dec 7, 2017
Primary completionActual
Aug 20, 2019
CompletionActual
Aug 20, 2019
Results delay requested
Aug 14, 2020
Results first posted
Jan 19, 2021
Last update
Jan 19, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 19, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03262038
Responsible party
Elizabeth Putnam (Assistant Professor, University of Michigan) — Principal investigator
First posted
Aug 25, 2017
Start date
Dec 7, 2017
Primary completion
Aug 20, 2019
Completion
Aug 20, 2019
Results posted
Jan 19, 2021
Last update
Jan 19, 2021

Study contacts

Elizabeth Putnam, MD
principal investigator · University of Michigan

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Aug 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Ondansetron

Start the discussion