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CompletedNCT02152592Updated Jun 2, 2014

Controlled-Release Oxycodone Versus Naproxen at Home After Ambulatory Surgery: A Randomized Controlled Trial

A Phase 4 interventional study of PCM/Oxy1 and PCM/Oxy2 in Postoperative Pain After Ambulatory Surgery, sponsored by Maastricht University Medical Center. Completed at 1 site in Netherlands. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2014-06-02.

Sponsored by Maastricht University Medical Center · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
105
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

the primary objective of this study is to assess and compare the efficacy, safety and benefits of Controlled Release (CR) oxycodone/paracetamol with our current pain protocol (paracetamol/naproxen) in the treatment of acute postoperative pain at home after painful day-case surgery. We hypothesize that ambulatory patients postoperatively treated with oxycodone/paracetamol will achieve better pain relief with equal side effects compared to patients treated with paracetamol/naproxen.

Our second goal is to assess analgesic adherence in the outpatient setting.

Endpoints:

Primary endpoints: pain intensity (Visual analogue scale) Secondary endpoints: - side-effects/ adverse effects of study medication

  • patient satisfaction with pain treatment
  • compliance to study medication

Study design:

Patients scheduled for painful ambulatory surgery (knee arthroscopy, unilateral open or laparoscopic inguinal hernia repair) will be enrolled in an open randomized controlled trial (RCT) at our pre-assessment clinic.

Subjects will be enrolled by a study nurse and will be randomized into one of three study treatment groups using a computer-generated list. Patients in group 1 (PCM/NAPR) are assigned to postoperative analgesia using naproxen 500 mg orally twice a day for 48 hours postoperatively. Patients assigned to group 2 (PCM/Oxy1) receive CR oxycodone 10 mg orally twice a day for 24 hours. Patients in group 3 (PCM/Oxy2) are postoperatively treated witch CR oxycodone 10 mg orally twice a day for 48 hours. All patients also receive paracetamol 1000 mg orally four times a day for 48 hours postoperatively.

Recovery after discharge will be assessed using a diary for up to 48 hours after surgery. Three times a day, patients have to rate pain at rest and movement (VAS), fatigue, nausea, vomiting, pruritus, miction problems, pyrosis, and abdominal complaints. Furthermore, compliance to the use of the study medication will be assessed by checking whether the patients took the study medication as prescribed and if any other pain medication was used. Compliance will be assessed three times a day and patients will be divided into three groups according to medication use: always = full compliance, sometimes = partial compliance, or never = no compliance.

Finally, overall satisfaction with the postoperative pain treatment will be assessed (score 0-10).

02

Conditions studied

  • Postoperative Pain After Ambulatory Surgery

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Keywords

  • Postoperative pain
  • Ambulatory surgery
  • NSAIDS
  • CR Oxycodone
  • Compliance to study medication
03

In context

Pain, Postoperative

5,093 studies on the registry are indexed under Pain, Postoperative; 1,140 are open to participants now.

This study's enrollment of 105 is above the median of 75 across 4,344 interventional studies indexed under Pain, Postoperative.

Browse Pain, Postoperative studies →

Lead sponsor

Maastricht University Medical Center is the lead sponsor of 835 studies on the registry; 122 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients scheduled for painful ambulatory surgery (knee arthroscopy, unilateral open or laparoscopic inguinal hernia repair)
  • American Society of Anesthesiologists (ASA) physical classification I or II

Exclusion criteria

Exclusion Criteria:

  • cognitive impairment,
  • preoperative pharmacologic pain treatment
  • allergy to or a contraindication for taking the study medication (e.g. paracetamol, oxycodone, naproxen or another NSAID)
  • porphyria
  • pregnancy or lactation
  • history of severe renal, hepatic, pulmonary, or cardiac failure
  • current symptoms or history of gastrointestinal bleeding, ileus or chronic obstipation
  • history of substance abuse, or use of medication with a suppressive effect on the central nervous system
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
105 participants (actual)

Study arms

  • No intervention
    PCM/NAPR group

    paracetamol 1000 mg orally four times a day for 48 hours postoperatively and naproxen 500 mg orally twice a day for 48 hours postoperatively (standard hospital pain protocol for treatment of acute postoperative pain at home after painful day-case surgery)

  • Active comparator
    PCM/Oxy1 group

    Controlled Release oxycodone 10 mg orally twice a day for 24 hours and paracetamol 1000 mg orally four times a day for 48 hours postoperatively

    Drug: PCM/Oxy1

  • Active comparator
    PCM/Oxy2 group

    CR oxycodone 10 mg orally twice a day for 48 hours and paracetamol 1000 mg orally four times a day for 48 hours postoperatively

    Drug: PCM/Oxy2

Interventions

  • DrugPCM/Oxy1

    Controlled Release oxycodone 10 mg orally twice a day for 24 hours

  • DrugPCM/Oxy2

    CR oxycodone 10 mg orally twice a day for 48 hours

06

What researchers measure

Primary outcomes

  1. a difference on a pain visual analogue scale between study groups

    a difference of 15mm or more on a visual analogue scale between three study groups is considered clinically relevant

    Time frame: up to 48 hours

Secondary outcomes

  1. Incidence of adverse effects of study medication

    Time frame: up to 48 hours

Other outcomes

  1. Adherence to study medication

    Time frame: up to 48 hours

07

Study locations

1 site
  • Department of Anesthesiology, Maastricht University Medical Center+, The Netherlands
    Maastricht, Netherlands
08

References and documents

Publications

  • Stessel B, Theunissen M, Fiddelers AA, Joosten EA, Kessels AG, Gramke HF, Marcus MA. Controlled-release oxycodone versus naproxen at home after ambulatory surgery: a randomized controlled trial. Curr Ther Res Clin Exp. 2014 Nov 28;76:120-5. doi: 10.1016/j.curtheres.2014.10.001. eCollection 2014 Dec. PubMed 25516773 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 2, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02152592
Lead sponsor
Maastricht University Medical Center
Responsible party
Bjorn Stessel (MD, Maastricht University Medical Center) — Principal investigator
First posted
Jun 2, 2014
Start date
Oct 2007
Primary completion
Mar 2009
Last update
Jun 2, 2014

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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