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Prevention of Rebound Pain After Orthopaedic Surgery With Peripheral Nerve Block (REBOUND)_part A (REBOUND)

19. Juni 2026 aktualisiert von: Eric Albrecht, Centre Hospitalier Universitaire Vaudois

Prevention of Rebound Pain After Orthopaedic Surgery With Peripheral Nerve Block: a Single-blinded Randomised Controlled Trial

Rebound pain after peripheral nerve blocks reduces the benefits of regional anesthesia and increases opioid consumption. This rebound pain most likely results from suboptimal pain management, as patients receiving a peripheral nerve block are typically not given scheduled opioid doses. Oral Patient Controlled Analgesia (PCA) consists of an oral morphine prescription that allows patients to self-administer doses based on their pain score.

This study will compare patients undergoing elective orthopaedic surgery under general anaesthesia or sedation with a peripheral nerve block, receiving oral morphine PCA either with or without additional scheduled oral morphine doses.

Studienübersicht

Detaillierte Beschreibung

This study contains two parts, one for the upper limb and one for the lower limb. Each part will be published independently.

This registration concerns the upper limb cohort.

Patients from each cohort (upper limb and lower limb) will be randomized into two groups of 25 patients each, for a total enrollment plan of 50 patients per cohort. After written informed consent, patients will be allocated to one of the two groups according to a computer-generated randomization list.

In the control group, morphine will be administered exclusively on demand via oral PCA,based on pain intensity assessed using a numeric rating scale (VAS > 4). For oral PCA, one10 mg morphine tablet is placed on the patient's bedside table by the nursing staff. When the patients experience pain, they may take the tablet autonomously and subsequently inform the nurse, who then prepares and places a new tablet at bedside for the next potential pain episode. No scheduled or prophylactic opioid administration will be provided in this group. The maximal allowed dose through oral PCA will be 6 tablets (10mg each) per 24-hour period.

In the intervention group, morphine will be administered at predefined regular intervals, starting immediately in the postoperative period in addition to the availability of oral PCA morphine as mentioned above. Scheduled doses of 20mg slow-release oral morphine will be given at fixed 12 hour intervals. Patients will therefore receive regular morphine to ensure continuous baseline analgesia while still having access to an additional tablet via oral PCA in case of breakthrough pain, following the same nursing procedure as in the control group.

In both groups, standardized multimodal analgesia will be provided

The primary objective of this study is to assess and compare the highest pain score within the first 24 postoperative hours between the two groups using the Visual Analog Scale (VAS). The secondary objective is to assess the effect of the intervention on postoperative pain and analgesic outcomes, including morphine consumption, pain scores, need for additional nerve blocks, incidence of chronic pain, duration of analgesia, postoperative side effects, complications, and hospital length of stay.

Studientyp

Interventionell

Einschreibung (Geschätzt)

100

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studieren Sie die Kontaktsicherung

Studienorte

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Patients scheduled for elective orthopaedic surgery on the upper limb
  • Patients scheduled for elective orthopaedic surgery on the lower limb.
  • Score ASA I-III; Patients aged over 18 years; Signed informed consent.
  • Surgery under general anaesthesia or under sedation

Exclusion Criteria:

  • Refusal or inability to understand the informed consent
  • Allergy to any of the following medications: ropivacaine, paracetamol, ibuprofen, ketorolac, morphine,sufentanil, ondansetron, or dexamethasone
  • Patients with long term opioid treatment
  • Bleeding diathesis
  • Neurological disorders of the operated limb
  • Known renal insufficiency (eGFR <30 mL/min)
  • Known hepatic insufficiency (Child-Pugh class B or C);
  • Pregnant or breastfeeding women;
  • Alcohol dependence syndrome;
  • Patients under spinal anaesthesia;
  • Patients undergoing amputation procedures

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Doppelt

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Scheduled group
Oral morphine administered at predefined regular intervals starting immediately after surgery, with additional access to oral PCA.
morphine will be administered according to a scheduled regimen (20mg slow-release oral morphine at fixed 12-hour intervals), with additional oral PCA on demand for breakthrough pain (VAS > 4), following the same bedside tablet procedure as in the control group. The maximum allowed dose through oral PCA will be 6 tablets (10mg each) per 24-hour period.
Andere Namen:
  • Sevredol 10mg + slow-release oral morphine 20mg
Aktiver Komparator: On-demand group
Oral morphine administered on demand via PCA.
Morphine will be administered according to a scheduled regimen (20mg slow release oral morphine at fixed 12-hour intervals), with additional oral PCA on demand for breakthrough pain (VAS > 4), following the same bedside tablet procedure as in the control group. The maximum allowed dose through oral PCA will be 6 tablets (10mg each) per 24-hour period.
Andere Namen:
  • Sevredol 10mg

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Worst pain score during the first 24 hours after surgery
Zeitfenster: 24 hours postoperatively
Highest postoperative pain score during the first 24 hours after surgery, measured using a 0-10 Visual Analog Scale (VAS), where 0 indicates no pain and 10 indicates the worst pain imaginable
24 hours postoperatively

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Minimal pain score during the first 12 hours after surgery
Zeitfenster: 12 hours postoperatively
Lowest postoperative pain score during the first 12 hours after surgery, measured using a 0-10 Visual Analog Scale (VAS), where 0 indicates no pain and 10 indicates the worst pain imaginable
12 hours postoperatively
Rebound pain score measured using the Visual Analog Scale (VAS)
Zeitfenster: From surgery until 24 hours postoperatively
Rebound pain score calculated as the difference between the highest postoperative pain score within the first 24 hours after surgery and the lowest postoperative pain score within the first 12 hours after surgery. Pain intensity is assessed using a Visual Analog Scale (VAS) ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher rebound pain scores indicate greater pain rebound.
From surgery until 24 hours postoperatively
Rest and dynamic pain scores
Zeitfenster: At 2, 12, 24, 36, 48, 60, and 72 hours after surgery
Rest and dynamic pain scores, measured using a 0-10 Visual Analogue Scale (VAS), where 0 indicates no pain and 10 indicates the worst pain imaginable.
At 2, 12, 24, 36, 48, 60, and 72 hours after surgery
Incidence of severe pain
Zeitfenster: From surgery through 3 months after surgery
Pain evaluated at >7/10 (VAS), measured using a 0-10 Visual Analogue Scale (VAS), where 0 indicates no pain and 10 indicates the worst pain imaginable.
From surgery through 3 months after surgery
Persistence of pain
Zeitfenster: During the follow-up period from discharge till 4 weeks and 3 months
Incidence of persistent pain at 4 weeks and chronic pain at 3 months
During the follow-up period from discharge till 4 weeks and 3 months
Morphine consumption in the recovery room
Zeitfenster: from admission until discharge from the recovery room, up to 2 hours
consumption in mg
from admission until discharge from the recovery room, up to 2 hours
PCA administered morphine consumption at day 1, 2 and 3
Zeitfenster: Day 1, 2 and 3 postoperatively
Consumption in mg administered by PCA
Day 1, 2 and 3 postoperatively
Total administered morphine consumption at day 1, 2, and 3
Zeitfenster: Day 1, 2 and 3 postoperatively
Total consumption in mg
Day 1, 2 and 3 postoperatively
Incidence of postoperative nausea and vomiting
Zeitfenster: At 2 hours, day 1, day 2 and day 3 postoperatively
Presence of nausea or vomiting in the postoperative period
At 2 hours, day 1, day 2 and day 3 postoperatively
Incidence of pruritus
Zeitfenster: At 2 hours, day 1, day 2 and day 3 postoperatively
Presence of pruritus in the postoperative period
At 2 hours, day 1, day 2 and day 3 postoperatively
Incidence of urinary retention requiring bladder catheterisation
Zeitfenster: At 2 hours, day 1, day 2 and day 3 postoperatively
Urinary retention requiring catheterisation
At 2 hours, day 1, day 2 and day 3 postoperatively
Hospital length of stay
Zeitfenster: At the time of hospital discharge (typically within 5 days, according to our hospital standard practice)
Duration of hospitalization, measured as the number of days from surgery to hospital discharge. Higher values indicate longer hospital stays.
At the time of hospital discharge (typically within 5 days, according to our hospital standard practice)
Requirement for a new peripheral nerve block
Zeitfenster: On postoperative day 1, 2 and 3
Requirement for a new peripheral nerve block
On postoperative day 1, 2 and 3
Duration of analgesia
Zeitfenster: From the time the block is performed up to 36 hours after surgery
Time between block performance and the first dose of morphine
From the time the block is performed up to 36 hours after surgery

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Juni 2026

Primärer Abschluss (Geschätzt)

1. September 2027

Studienabschluss (Geschätzt)

1. September 2027

Studienanmeldedaten

Zuerst eingereicht

3. Juni 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

19. Juni 2026

Zuerst gepostet (Tatsächlich)

24. Juni 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

24. Juni 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

19. Juni 2026

Zuletzt verifiziert

1. Juni 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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