Obturator Nerve Block in Patients With Hip Fracture (OPAD)
Proximal Obturator Nerve Block After Insufficient Analgesic Effect of Femoral Nerve Block in Patients With Hip Fracture
About 10-30% of all patients with hip fracture have only insufficient analgesic effect of a femoral nerve block. One of the possible causes of this failure to provide analgesia from a single nerve block could be the that other nerves occasionally are involved in transmitting the pain signal. One of the nerves that is believed to give off branches to the hip is the obturator nerve.
With ultrasound it is possible to make a selective proximal nerve block of the obturator nerve.
The aim of this trail is to give patients with hip fracture and only insufficient effect of a femoral nerve block a supplementary obturator nerve block in a randomized manner with either local anesthetics or placebo in order to access the preoperative analgesic effect.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
About 10-30% of all patients with hip fracture have only insufficient analgesic effect of a femoral nerve block. One of the possible causes of this failure to provide analgesia from a single nerve block could be the that other nerves occasionally are involved in transmitting the pain signal. One of the nerves that is believed to give off branches to the hip is the obturator nerve. Earlier it was believed that the so called '3-in-1-block' or the iliac fascia compartment block would anesthetize also the obturator nerve, and these two nerve blocks have been uses extensively in the emergency ward for preoperative analgesia. Today that is not believed to be true and consequently is the part of the obturator nerve in patients with hip fracture unknown.
With ultrasound it is possible to make a selective proximal nerve block of the obturator nerve before it branches into an anterior and a posterior branch. A selective nerve block af the obturator nerve to access its effect in patients with hip fracture has to our knowledge never been done.
The aim of this trail is to give patients with hip fracture and only insufficient effect of a femoral nerve block a supplementary obturator nerve block in a randomized manner with either local anesthetics or placebo in order to access the preoperative analgesic effect.
Tipo de estudio
Fase
- Fase 4
Contactos y Ubicaciones
Ubicaciones de estudio
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Aarhus, Dinamarca, 8000
- Aarhus University Hospital
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Clinical suspicion of hip fracture
- Successful sensory cutaneous effect of the femoral nerve block
- Age ≥ 55 years
- Mentally capable of comprehending and using verbal pain score
- Mentally capable of differentiating between pain from the fractured hip and pain from other locations
- Mentally capable of understanding the given information
- Arrival in the emergency room at times when one of the doctors who do the nerve blocks for this investigation are on call
- Possible sonographic visualization of the structures needed for the nerve block
- Verbal numeric pain scale score (NRS 0-10) > 5 with passive leg raise of the fractured leg at the time of inclusion OR NRS > 3 at rest, 30 minutes after a femoral nerve block
- Patients informed consent
Exclusion Criteria:
- Hip fracture not confirmed by x-ray
- Weight < 45 kg
- Patient has previously been included in this trial
- If the patient wishes to be excluded
- Allergy to local anesthetics or adrenocortical hormone
- Visible infection in the area of the point of needle injection
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Cuadruplicar
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: Local anesthetic
15 ml. of local anesthetic
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Bupivacaine is injected proximally to anesthetize the obturator nerve
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Comparador de placebos: Saline
15 ml. of saline
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Saline is injected as a placebo
Otros nombres:
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Success rate of successful analgesia
Periodo de tiempo: 20 minutes
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Success rate of successful analgesia 20 minutes after a supplementary obturator nerve block in patients with hip fracture
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20 minutes
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Time used for the procedure
Periodo de tiempo: Expected average of 5 minutes
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Time from start of ultrasound scanning to end of injection of local anesthetic or placebo
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Expected average of 5 minutes
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Success rate of possible sonographic visualization
Periodo de tiempo: Expected average of 5 minutes
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Success rate of possible sonographic visualization of necessary anatomical structures i order to do the nerve block
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Expected average of 5 minutes
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Time to analgesia
Periodo de tiempo: 20 minutes
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Time from end of injection of local anesthetic to analgesia
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20 minutes
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Director de estudio: Thomas F. Bendtsen, MD, Ph.d., Aarhus University Hospital
Publicaciones y enlaces útiles
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Anticipado)
Finalización del estudio (Anticipado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
- Heridas y Lesiones
- Lesiones en las piernas
- Fracturas Femorales
- Lesiones de cadera
- Fracturas, Hueso
- Fracturas de cadera
- Efectos fisiológicos de las drogas
- Depresores del sistema nervioso central
- Agentes del sistema nervioso periférico
- Agentes del sistema sensorial
- Anestésicos
- Anestésicos Locales
- Bupivacaína
Otros números de identificación del estudio
- protocol2tdn
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Ensayos clínicos sobre Fracturas de cadera
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Aarhus University HospitalUniversity of AarhusReclutamientoCoxa saltans externo | HiP externoDinamarca
Ensayos clínicos sobre Bupivacaine
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Recep Tayyip Erdogan Hospital PakistanTerminadoColecistectomía laparoscópica | Analgesia postoperatoria | BupivacaínaPakistán
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University Hospitals Cleveland Medical CenterReclutamiento
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