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.
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Gedetailleerde beschrijving
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.
Studietype
Studietype
Fase
Fase
- Fase 4
Contacten en locaties
Studie Locaties
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Aarhus, Denemarken, 8000
- Aarhus University Hospital
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
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
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verviervoudigen
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
|---|---|
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Experimenteel: Local anesthetic
15 ml. of local anesthetic
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Bupivacaine is injected proximally to anesthetize the obturator nerve
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Placebo-vergelijker: Saline
15 ml. of saline
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Saline is injected as a placebo
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Success rate of successful analgesia
Tijdsspanne: 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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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Time used for the procedure
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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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Medewerkers en onderzoekers
Sponsor
Sponsor
Onderzoekers
Onderzoekers
- Studie directeur: Thomas F. Bendtsen, MD, Ph.d., Aarhus University Hospital
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Studie start
Primaire voltooiing (Verwacht)
Primaire voltooiing
Studie voltooiing (Verwacht)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- protocol2tdn
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