- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico 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
Descripción general del estudio
Estado
Intervención / Tratamiento
Descripción detallada
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.
Tipo de estudio
Inscripción (Actual)
Fase
- No aplica
Contactos y Ubicaciones
Ubicaciones de estudio
-
-
Mexico City
-
Mexico City, Mexico City, México, 09360
- Hospital Regional "General Ignacio Zaragoza," ISSSTE
-
-
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
Acepta Voluntarios Saludables
Descripción
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 de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Prevención
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Cuadruplicar
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: 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).
|
|
Comparador activo: 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).
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Pain intensity by Numeric Rating Scale (NRS)
Periodo de tiempo: 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
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Rescue morphine consumption
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
|
Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Dolor
- Manifestaciones neurológicas
- Complicaciones Postoperatorias
- Procesos Patológicos
- Condiciones Patológicas, Signos y Síntomas
- Signos y síntomas
- Dolor Postoperatorio
- Aminoácidos, péptidos y proteínas
- Químicos orgánicos
- Hidrocarburos
- Hidrocarburos, cíclico
- Ácidos, acíclico
- Ácidos carboxílicos
- Hidrocarburos, aromáticos
- Aminoácidos
- Fenoles
- Derivados de benceno
- ácido gamma-aminobutírico
- Aminobutiratos
- Butiratos
- Pregabalina
- Tapentadol
Otros números de identificación del estudio
- ISSSTE RPI #386-2024
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Descripción del plan IPD
Marco de tiempo para compartir IPD
Criterios de acceso compartido de IPD
Tipo de información de apoyo para compartir IPD
- PROTOCOLO DE ESTUDIO
- CÓDIGO_ANALÍTICO
- RSC
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .