- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07587645
Tapentadol vs Pregabalin for Postoperative Pain in Lower Limb Surgery
Oral Premedication With Tapentadol Versus Pregabalin for Acute Postoperative Pain in Lower Limb Surgery Under Neuraxial Anesthesia: A Pilot Randomized Controlled Trial
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Acute postoperative pain affects over 80% of surgical patients, with orthopaedic lower limb procedures causing particularly severe pain. Preemptive analgesia may attenuate central sensitisation before surgical incision. Tapentadol (μ-opioid agonist + norepinephrine reuptake inhibitor) and pregabalin (voltage-gated calcium channel modulator) are pharmacologically distinct options, but direct comparative data are lacking.
This single-centre, double-blind, parallel-group pilot randomised controlled trial was conducted at Hospital Regional "General Ignacio Zaragoza," ISSSTE, Mexico City. Forty-six patients (ASA I-II, age 18-50 years, BMI 18-35 kg/m²) scheduled for elective lower limb surgery under neuraxial anaesthesia were randomised 1:1 to receive either tapentadol 50 mg orally every 12 hours (n=23) or pregabalin 75 mg orally every 24 hours (n=23), both initiated 72 hours before surgical incision.
The primary outcome was postoperative pain intensity assessed using the Numeric Rating Scale (NRS 0-10) at PACU arrival (T0) and at 30 (T1), 60 (T2), 90 (T3), and 120 (T4) minutes thereafter. Secondary outcomes included Verbal Rating Scale (VRS) scores, rescue morphine consumption (4 mg IV on request), and incidence of nausea/vomiting and hypersensitivity reactions. The primary longitudinal analysis used a linear mixed model with Group, Time, and Group×Time interaction as fixed effects and a random intercept per patient. Between-group contrasts at each timepoint were derived from estimated marginal means with Holm correction. Effect sizes are reported as Cohen's d.
The trial was approved by the institutional ethics and research committee (RPI #386-2024) and registered with the ISSSTE institutional research registry prior to enrolment. Due to institutional policy restrictions at the time of study initiation, registration on ClinicalTrials.gov was completed after data collection; this is disclosed transparently in accordance with CONSORT 2025 guidance on retrospective registration disclosure.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
-
-
Mexico City
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Mexico City, Mexico City, Mexique, 09360
- Hospital Regional "General Ignacio Zaragoza," ISSSTE
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-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
Accepte les volontaires sains
La description
Inclusion Criteria:
- Age 18-50 years
- ASA physical status I or II
- Body mass index between 18 and 35 kg/m²
- Scheduled for elective lower limb surgery under neuraxial anaesthesia
- Willing to provide written informed consent
Exclusion Criteria:
- Chronic use of analgesics or gabapentinoids
- Known hypersensitivity to tapentadol or pregabalin
- Pre-existing chronic pain
Elimination Criteria:
- Hypersensitivity reaction to any study drug during administration
- Hemodynamic shock of any etiology
- Requirement for advanced airway management or postoperative mechanical ventilation
- Surgical duration exceeding 120 minutes
- Requirement of an epidural catheter dose within the first two postoperative hours
- Voluntary withdrawal of consent at any point
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Quadruple
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Tapentadol
Oral tapentadol 50 mg every 12 hours for 72 hours before surgical incision (total daily dose 100 mg).
|
Tapentadol 50 mg immediate-release oral tablet administered every 12 hours for 72 hours preoperatively (total of 6 doses).
|
|
Comparateur actif: Pregabalin
Oral pregabalin 75 mg every 24 hours for 72 hours before surgical incision (total daily dose 75 mg).
|
Pregabalin 75 mg oral capsule administered every 24 hours for 72 hours preoperatively (total of 3 doses).
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Pain intensity by Numeric Rating Scale (NRS)
Délai: At PACU arrival (T0), 30 minutes (T1), 60 minutes (T2), 90 minutes (T3), and 120 minutes (T4) post-arrival
|
Postoperative pain intensity measured using the Numeric Rating Scale (NRS, 0-10; 0 = no pain, 10 = worst imaginable pain).
The primary longitudinal analysis used a linear mixed model with Group, Time, and Group×Time interaction as fixed effects and a random intercept per patient.
Between-group contrasts at each timepoint were derived from estimated marginal means with Holm correction.
Effect sizes reported as Cohen's d.
|
At PACU arrival (T0), 30 minutes (T1), 60 minutes (T2), 90 minutes (T3), and 120 minutes (T4) post-arrival
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Rescue morphine consumption
Délai: During the two-hour PACU observation period (T0-T4)
|
Proportion of patients requiring rescue analgesia (morphine 4 mg IV) and total morphine consumption (mg) in each group.
|
During the two-hour PACU observation period (T0-T4)
|
|
Incidence of nausea and vomiting
Délai: During the two-hour PACU observation period (T0-T4)
|
Proportion of patients experiencing nausea and/or vomiting in each group, assessed by clinical observation and patient report.
|
During the two-hour PACU observation period (T0-T4)
|
|
Hypersensitivity reactions
Délai: From first dose of study medication through 24 hours post-surgery
|
Incidence of any hypersensitivity or anaphylactic reaction to tapentadol or pregabalin, classified according to Müller criteria.
|
From first dose of study medication through 24 hours post-surgery
|
|
Verbal Rating Scale (VRS) pain category
Délai: At PACU arrival (T0), 30 minutes (T1), 60 minutes (T2), 90 minutes (T3), and 120 minutes (T4) post-arrival
|
Pain severity categorised as absence, low, moderate, or severe using the Verbal Rating Scale (VRS).
Reported as proportions of patients in each category at each timepoint.
|
At PACU arrival (T0), 30 minutes (T1), 60 minutes (T2), 90 minutes (T3), and 120 minutes (T4) post-arrival
|
Collaborateurs et enquêteurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- La douleur
- Manifestations neurologiques
- Complications postopératoires
- Processus pathologiques
- Conditions pathologiques, signes et symptômes
- Signes et symptômes
- Douleur, Postopératoire
- Acides aminés, peptides et protéines
- Produits chimiques organiques
- Hydrocarbures
- Hydrocarbures, cyclique
- Acides, acyclique
- Acides carboxyliques
- Hydrocarbures, aromatique
- Acides aminés
- Phénols
- Dérivés de benzène
- acide gamma-aminobutyrique
- Aminobutyrate
- Butyrate
- Prégabaline
- Tapentadol
Autres numéros d'identification d'étude
- ISSSTE RPI #386-2024
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
Délai de partage IPD
Critères d'accès au partage IPD
Type d'informations de prise en charge du partage d'IPD
- PROTOCOLE D'ÉTUDE
- ANALYTIC_CODE
- RSE
Informations sur les médicaments et les dispositifs, documents d'étude
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