ClinicalTrials.gg
CompletedNCT04551196Updated Jul 11, 2024Results posted

Management of Post-Tonsillectomy Pain in Pediatric Patients

A Phase 3 interventional study of Alternating Acetaminophen and Ibuprofen and Combined Acetaminophen and Ibuprofen in Pain, Postoperative, Tonsillar Hypertrophy and Tonsillitis, sponsored by Washington University School of Medicine. Completed at 1 site in United States. Open to participants aged 4 Years to 17 Years. Per ClinicalTrials.gov, last updated 2024-07-11.

Sponsored by Washington University School of Medicine · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
4 Years to 17 Years
Sex
All
01

Study summary

Single-center, randomized, open-label, non-inferiority treatment pilot study to evaluate the effectiveness of a combined acetaminophen and ibuprofen regimen for treatment of post-operative tonsillectomy pain in the pediatric population. 100 children undergoing tonsillectomy will be randomized to receive either a combined acetaminophen and ibuprofen regimen dosed every 6 hours or an alternating regimen of acetaminophen and ibuprofen dosed every 3 hours.

02

Conditions studied

  • Pain, Postoperative
  • Tonsillar Hypertrophy
  • Tonsillitis
03

In context

Pain, Postoperative

5,640 studies on the registry are indexed under Pain, Postoperative; 1,230 are open to participants now.

This study's enrollment of 50 is below the median of 75 across 4,821 interventional studies indexed under Pain, Postoperative.

Browse Pain, Postoperative studies →

Lead sponsor

Washington University School of Medicine is the lead sponsor of 1,803 studies on the registry; 271 are open to participants now.

Of its 329 completed or terminated interventional studies of FDA-regulated products, 216 (66%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
4 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

  • 4 to 17 years of age at time of enrollment
  • Undergoing tonsillectomy with or without adenoidectomy
  • Able to provide from parent or legal guardian
  • Able to provide assent if subject is a minor of appropriate age

Exclusion criteria

Exclusion Criteria:

  • Allergy to acetaminophen or ibuprofen
  • Inability for study participant to cooperate with pain assessments
  • Known pregnancy
  • Any condition which would make the participant, in the opinion of the investigator, unsuitable for the study
Terms in these criteria, in plain language(1)

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.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (actual)

Study arms

  • Active comparator
    Alternating Regimen

    A regimen of acetaminophen and ibuprofen alternating doses every 3 hours.

    Drug: Alternating Acetaminophen and Ibuprofen

  • Active comparator
    Combined Regimen

    A regimen of acetaminophen and ibuprofen dosed together every 6 hours.

    Drug: Combined Acetaminophen and Ibuprofen

Interventions

  • DrugAlternating Acetaminophen and Ibuprofen

    Subjects will alternate their post-operative acetaminophen and ibuprofen every 3 hours.

    Also known as: Alternating regimen

  • DrugCombined Acetaminophen and Ibuprofen

    Subjects will take their post-operative acetaminophen and ibuprofen together every 6 hours.

    Also known as: Combined regimen

06

What researchers measure

Primary outcomes

  1. Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 3

    The proportion of FLACC (Faces, Legs, Activity, Cry, and Consolability scale) pain scores ≥7 from POD 1 through POD 3 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

    Time frame: up to 3 days following consent

Secondary outcomes

  1. Number of Participants With FLACC Pain Scores ≥7 on Each Individual POD 1, 3, and 7

    The proportion of FLACC (Faces, Legs, Activity, Cry, and Consolability scale) pain scores ≥7 on each individual POD 1, 3, and 7 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

    Time frame: 3 separate individual days, will be completed days after the surgery

  2. Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 7

    The proportion of cumulative FLACC pain scores ≥7 from POD 1 through POD 7 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

    Time frame: up to 7 days following consent

  3. Number of Participants With Faces Pain Scores ≥8 on POD 1, 3, and 7

    The proportion of Faces pain scores ≥8 on POD 1, 3, and 7 compared between the combined and the alternating medication regimens. The Faces scale shows a series of faces ranging from a happy face at 0, or "no hurt", to a crying face at 10, which represents "hurts like the worst pain imaginable". Based on the faces and written descriptions, the patient chooses the face that best describes their level of pain.

    Time frame: 3 separate individual days, will be completed days after the surgery

  4. Number of Participants With Cumulative Faces Pain Scores ≥8 From POD 1 Through POD 7

    The proportion of cumulative Faces pain scores ≥8 from POD 1 through POD 7 compared between the combined and the alternating medication regimens. The Faces scale shows a series of faces ranging from a happy face at 0, or "no hurt", to a crying face at 10, which represents "hurts like the worst pain imaginable". Based on the faces and written descriptions, the patient chooses the face that best describes their level of pain.

    Time frame: up to 7 days following consent

  5. Number of Participants With Rescue Medication Usage Through POD 3

    The proportion of rescue medication usage from POD 1 through POD 3 compared between the combined and the alternating medication regimens.

    Time frame: up to 3 days following consent

  6. Number of Participants With Rescue Medication Usage Through POD 7

    The proportion of rescue medication usage from POD 1 through POD 7 compared between the combined and the alternating medication regimens.

    Time frame: up to 7 days following consent

  7. Proportion of Subjects That Adhere to the Assigned Medication Regimen

    Proportion of subjects that adhere to the assigned medication regimen compared between the combined and the alternating medication regimens as determined by the medication log that the participants return at the end of the study.

    Time frame: up to 3 days following consent

  8. Adverse Events

    Incidence of adverse events

    Time frame: up to 7 days following consent

07

Results

Posted Jul 11, 2024

Participant flow

Eligible candidates scheduled to undergo tonsillectomy at SLCH were approached either in the outpatient setting or preoperative holding area prior to surgery by the study team. Recruitment period was from 3/2020 - 10/2021.

Participant flow — Overall Study
MilestoneAlternating RegimenCombined Regimen
Started2525
Completed2525
Not completed00

Outcome measures

PrimaryNumber of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 3

The proportion of FLACC (Faces, Legs, Activity, Cry, and Consolability scale) pain scores ≥7 from POD 1 through POD 3 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

Time frame:
up to 3 days following consent
Reported as:
Number · participants
Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 3
participantsAlternating RegimenCombined Regimen
Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 311
SecondaryNumber of Participants With FLACC Pain Scores ≥7 on Each Individual POD 1, 3, and 7

The proportion of FLACC (Faces, Legs, Activity, Cry, and Consolability scale) pain scores ≥7 on each individual POD 1, 3, and 7 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

Time frame:
3 separate individual days, will be completed days after the surgery
Reported as:
Number · participants
Number of Participants With FLACC Pain Scores ≥7 on Each Individual POD 1, 3, and 7
participantsAlternating RegimenCombined Regimen
Number of Participants With FLACC Pain Scores ≥7 on Each Individual POD 1, 3, and 711
SecondaryNumber of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 7

The proportion of cumulative FLACC pain scores ≥7 from POD 1 through POD 7 compared between the combined and the alternating medication regimens. The FLACC scale is scored in a range of 0-10 with 0 representing no pain. The scale has five criteria (Faces, Legs, Activity, Cry, and Consolability), which are each assigned a score of 0, 1 or 2.

Time frame:
up to 7 days following consent
Reported as:
Number · participants
Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 7
participantsAlternating RegimenCombined Regimen
Number of Participants With FLACC Pain Scores ≥7 From POD 1 Through POD 711
SecondaryNumber of Participants With Faces Pain Scores ≥8 on POD 1, 3, and 7

The proportion of Faces pain scores ≥8 on POD 1, 3, and 7 compared between the combined and the alternating medication regimens. The Faces scale shows a series of faces ranging from a happy face at 0, or "no hurt", to a crying face at 10, which represents "hurts like the worst pain imaginable". Based on the faces and written descriptions, the patient chooses the face that best describes their level of pain.

Time frame:
3 separate individual days, will be completed days after the surgery
Reported as:
Number · participants
Number of Participants With Faces Pain Scores ≥8 on POD 1, 3, and 7
participantsAlternating RegimenCombined Regimen
Number of Participants With Faces Pain Scores ≥8 on POD 1, 3, and 711
SecondaryNumber of Participants With Cumulative Faces Pain Scores ≥8 From POD 1 Through POD 7

The proportion of cumulative Faces pain scores ≥8 from POD 1 through POD 7 compared between the combined and the alternating medication regimens. The Faces scale shows a series of faces ranging from a happy face at 0, or "no hurt", to a crying face at 10, which represents "hurts like the worst pain imaginable". Based on the faces and written descriptions, the patient chooses the face that best describes their level of pain.

Time frame:
up to 7 days following consent
Reported as:
Number · participants
Number of Participants With Cumulative Faces Pain Scores ≥8 From POD 1 Through POD 7
participantsAlternating RegimenCombined Regimen
Number of Participants With Cumulative Faces Pain Scores ≥8 From POD 1 Through POD 731
SecondaryNumber of Participants With Rescue Medication Usage Through POD 3

The proportion of rescue medication usage from POD 1 through POD 3 compared between the combined and the alternating medication regimens.

Time frame:
up to 3 days following consent
Reported as:
Number · participants
Number of Participants With Rescue Medication Usage Through POD 3
participantsAlternating RegimenCombined Regimen
Number of Participants With Rescue Medication Usage Through POD 337
SecondaryNumber of Participants With Rescue Medication Usage Through POD 7

The proportion of rescue medication usage from POD 1 through POD 7 compared between the combined and the alternating medication regimens.

Time frame:
up to 7 days following consent
Reported as:
Number · participants
Number of Participants With Rescue Medication Usage Through POD 7
participantsAlternating RegimenCombined Regimen
Number of Participants With Rescue Medication Usage Through POD 710
SecondaryProportion of Subjects That Adhere to the Assigned Medication Regimen

Proportion of subjects that adhere to the assigned medication regimen compared between the combined and the alternating medication regimens as determined by the medication log that the participants return at the end of the study.

Time frame:
up to 3 days following consent
Reported as:
Count of participants · Participants
Proportion of Subjects That Adhere to the Assigned Medication Regimen
ParticipantsAlternating RegimenCombined Regimen
Proportion of Subjects That Adhere to the Assigned Medication Regimen2525
SecondaryAdverse Events

Incidence of adverse events

Time frame:
up to 7 days following consent
Reported as:
Number · participants
Adverse Events
participantsAlternating RegimenCombined Regimen
Adverse Events33

Adverse events

Collected over Adverse event data was collected post operatively days 1 through 7. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Alternating Regimen0/25 (0%)0/25 (0%)3/25 (12%)
Combined Regimen0/25 (0%)0/25 (0%)3/25 (12%)
Most frequent other events
Most frequent other events
EventAlternating RegimenCombined Regimen
EmesisGastrointestinal disorders3/251/25
NauseaGastrointestinal disorders2/251/25
Bloody Oral SecretionsGastrointestinal disorders0/251/25
Pain - UncontrolledGeneral disorders1/251/25

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Alternating RegimenCombined RegimenTotal
<=18 years252550
Between 18 and 65 years000
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)Alternating RegimenCombined RegimenTotal
Female161026
Male91524
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Alternating RegimenCombined RegimenTotal
Hispanic or Latino000
Not Hispanic or Latino252348
Unknown or Not Reported022
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Alternating RegimenCombined RegimenTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American448
White212041
More than one race000
Unknown or Not Reported011
08

Study locations

1 site
  • Saint Louis Children's Hospital
    Saint Louis, Missouri 63110, United States
09

References and documents

Publications

  • Mitchell RB, Archer SM, Ishman SL, Rosenfeld RM, Coles S, Finestone SA, Friedman NR, Giordano T, Hildrew DM, Kim TW, Lloyd RM, Parikh SR, Shulman ST, Walner DL, Walsh SA, Nnacheta LC. Clinical Practice Guideline: Tonsillectomy in Children (Update). Otolaryngol Head Neck Surg. 2019 Feb;160(1_suppl):S1-S42. doi: 10.1177/0194599818801757. PubMed 30798778 ↗
  • Ingram DG, Friedman NR. Toward Adenotonsillectomy in Children: A Review for the General Pediatrician. JAMA Pediatr. 2015 Dec;169(12):1155-61. doi: 10.1001/jamapediatrics.2015.2016. PubMed 26436644 ↗
  • National Prospective Tonsillectomy Audit Final Report. Royal College of Surgeons https://www.rcseng.ac.uk/library-and-publications/rcs-publications/docs/tonsillectomy-audit/
  • Alvarez Palacios I, Gonzalez-Orus Alvarez-Morujo R, Alonso Martinez C, Ayala Mejias A, Arenas Britez O. Postoperative Pain in Adult Tonsillectomy: Is There Any Difference Between the Technique? Indian J Otolaryngol Head Neck Surg. 2017 Jun;69(2):187-193. doi: 10.1007/s12070-017-1058-9. Epub 2017 Jan 16. PubMed 28607888 ↗
  • Lauder G, Emmott A. Confronting the challenges of effective pain management in children following tonsillectomy. Int J Pediatr Otorhinolaryngol. 2014 Nov;78(11):1813-27. doi: 10.1016/j.ijporl.2014.08.011. Epub 2014 Aug 27. PubMed 25241379 ↗
  • Tobias JD, Green TP, Cote CJ; SECTION ON ANESTHESIOLOGY AND PAIN MEDICINE; COMMITTEE ON DRUGS. Codeine: Time to Say "No". Pediatrics. 2016 Oct;138(4):e20162396. doi: 10.1542/peds.2016-2396. Epub 2016 Sep 19. PubMed 27647717 ↗
  • Kelly LE, Sommer DD, Ramakrishna J, Hoffbauer S, Arbab-Tafti S, Reid D, Maclean J, Koren G. Morphine or Ibuprofen for post-tonsillectomy analgesia: a randomized trial. Pediatrics. 2015 Feb;135(2):307-13. doi: 10.1542/peds.2014-1906. PubMed 25624387 ↗
  • Ismail Zaidan & Amanda Lent. Post-Tonsillectomy Pain in Children: The Postcodeine Era. US Pharm. 41, 31-34 (2016).
  • D'Souza JN, Schmidt RJ, Xie L, Adelman JP, Nardone HC. Postoperative nonsteroidal anti-inflammatory drugs and risk of bleeding in pediatric intracapsular tonsillectomy. Int J Pediatr Otorhinolaryngol. 2015 Sep;79(9):1472-6. doi: 10.1016/j.ijporl.2015.05.042. Epub 2015 Jul 2. PubMed 26164211 ↗
  • Lewis SR, Nicholson A, Cardwell ME, Siviter G, Smith AF. Nonsteroidal anti-inflammatory drugs and perioperative bleeding in paediatric tonsillectomy. Cochrane Database Syst Rev. 2013 Jul 18;2013(7):CD003591. doi: 10.1002/14651858.CD003591.pub3. PubMed 23881651 ↗
  • Merry AF, Gibbs RD, Edwards J, Ting GS, Frampton C, Davies E, Anderson BJ. Combined acetaminophen and ibuprofen for pain relief after oral surgery in adults: a randomized controlled trial. Br J Anaesth. 2010 Jan;104(1):80-8. doi: 10.1093/bja/aep338. PubMed 20007794 ↗
  • Miranda HF, Puig MM, Prieto JC, Pinardi G. Synergism between paracetamol and nonsteroidal anti-inflammatory drugs in experimental acute pain. Pain. 2006 Mar;121(1-2):22-8. doi: 10.1016/j.pain.2005.11.012. Epub 2006 Feb 9. PubMed 16480830 ↗
  • Gardiner P, Dvorkin L. Promoting medication adherence in children. Am Fam Physician. 2006 Sep 1;74(5):793-8. PubMed 16970023 ↗
  • Haynes RB, McKibbon KA, Kanani R. Systematic review of randomised trials of interventions to assist patients to follow prescriptions for medications. Lancet. 1996 Aug 10;348(9024):383-6. doi: 10.1016/s0140-6736(96)01073-2. Erratum In: Lancet 1997 Apr 19;349(9059):1180. PubMed 8709739 ↗
  • Uitti JM, Salantera S, Laine MK, Tahtinen PA, Ruohola A. Adaptation of pain scales for parent observation: are pain scales and symptoms useful in detecting pain of young children with the suspicion of acute otitis media? BMC Pediatr. 2018 Dec 20;18(1):392. doi: 10.1186/s12887-018-1361-y. PubMed 30572868 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 11, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04551196
Responsible party
Sponsor
First posted
Sep 16, 2020
Start date
Sep 28, 2020
Primary completion
Nov 10, 2022
Completion
Nov 10, 2022
Results posted
Jul 11, 2024
Last update
Jul 11, 2024

Oversight

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

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