- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT02488473
Does Perineural Dexmedetomidine Prolong Duration of a Nerve Block?
Does Perineural Dexmedetomidine Prolong the Duration of an Adductor Canal Block When Controlling for a Systemic Effect? - A Randomised Paired Trial in Healthy Volunteers.
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Background:
Efficient pain management promoting mobilization and convalescence is essential in an ideal perioperative course. Regional nerve blocks are a central element in postoperative regimes for many patients and it is therefore important that these nerve blocks are both long lasting and efficient. This trial will investigate whether it is possible to optimize the postoperative pain management when adding dexmedetomidine to the local anaesthetic ropivacaine in peripheral nerve blocks.
The prolonging effect of using dexmedetomidine as adjunct in peripheral nerve blocks have been investigated in several studies. However, it remains uncertain whether the effect is mediated by a systemic-, a peripheral- or a combined systemic/peripheral mechanism. In this trial the adjuvating effect of dexmedetomidine will be investigated using the adductor canal block. This is a nerve block that besides being efficient as pain treatment after knee surgery, is primarily sensory, and therefore augments mobilization after total knee arthroplasty.
Method:
On the trial day the volunteers will receive bilateral adductor canal blocks. In one thigh they will receive the local anaesthetic ropivacaine 20ml 5mg/ml and placebo (saline) and in the other thigh ropivacaine 20ml 5mg/ml and dexmedetomidine 100μg. The allocation is blinded to volunteer and investigator.
The duration of the nerve block will be measured by five different tests: Temperature test, Pinprick, Pain during tonic heat stimulation, Warmth detection threshold and pain detection threshold. All tests are validated within pain research.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Phase 2
Kontakte und Standorte
Studienorte
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Koege, Dänemark, 4600
- Department of Anesthesiology Koege Hospital
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- American Society of Anesthesiologists class 1
- Body Mass Index 18-30
Exclusion Criteria:
- Allergy to study medication
- Earlier trauma or surgery to lower limb
- Diabetes Mellitus
- Alcohol or drug abuse
- Daily intake of opioids or steroids last 4 weeks
- Daily intake of any analgesics last 48 hours Heart block Sick sinus node.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Vervierfachen
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
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Experimental: Ropivacaine + Dexmedetomidine
Adductor Canal Block 20 ml Ropivacaine 5mg/ml + 1 ml Dexmedetomidine 100ug/ml
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100 ug dexmedetomidine added to the ropivacaine nerveblock
Andere Namen:
20 ml Ropivacaine 5mg/ml
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Placebo-Komparator: Ropivacaine + Placebo
Adductor Canal Block 20 ml Ropivacaine 5mg/ml + 1 ml Saline
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20 ml Ropivacaine 5mg/ml
Placebo
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Difference in duration of sensory block between dexmedetomidine and placebo assessed as cold sensation with an alcohol swab
Zeitfenster: 0-36 hours
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Duration is defined as time from block performance until recovery of cold sensation to an alcohol swab, assessed every hour post-block (and every half hour when pain scores during the tonic heat stimulation test is above 0) Time for sleep will be provided.
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0-36 hours
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Difference between dexmedetomidine and placebo in the duration of a sensory block assessed by pin-prick
Zeitfenster: 0-36 hours
|
Duration is defined as time from block performance until recovery of normal sensation, assessed on the hour post block Time for sleep will be provided.
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0-36 hours
|
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Difference between dexmedetomidine and placebo in the duration of a sensory block assessed as maximum pain during a tonic heat stimulation test
Zeitfenster: 0-36 hours
|
Duration is defined as time from block performance until recovery of normal sensation, assessed on the hour post block.Time for sleep will be provided.
Recovery of normal sensation is defined as VAS pain scores ± 10 mm of the pre-block value.
A Linear 100mm visual analogue scale (VAS) will be used.
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0-36 hours
|
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Difference between dexmedetomidine and placebo in the duration of a sensory block assessed as warmth detection threshold
Zeitfenster: 0-36 hours
|
Duration is defined as time from block performance until recovery of normal sensation, assessed on the hour post block Time for sleep will be provided.
Recovery of normal sensation is defined as detection thresholds of ± 2 degrees C of the pre-block value.
Time for sleep will be provided
|
0-36 hours
|
|
Difference between dexmedetomidine and placebo in the duration of a sensory block assessed as heat pain detection threshold
Zeitfenster: 0-36 hours
|
Duration is defined as time from block performance until recovery of normal sensation, assessed on the hour post block.
Time for sleep will be provided.
Recovery of normal sensation is defined as detection thresholds of ± 2 degrees C of the pre-block value.
|
0-36 hours
|
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Difference in maximum pain scores between dexmedetomidine and placebo during block and after recovery of normal sensation.
Zeitfenster: 0-36 hours
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Pain scores during a tonic heat stimulation will be compared every hour post block and 1 h after pain scores have returned to the pre-block values.
Time for sleep will be provided.
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0-36 hours
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Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Jakob H Andersen, MD, Department of Anesthesiology Koege Hospital
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Physiologische Wirkungen von Arzneimitteln
- Adrenerge Wirkstoffe
- Neurotransmitter-Agenten
- Molekulare Mechanismen der pharmakologischen Wirkung
- Depressiva des zentralen Nervensystems
- Agenten des peripheren Nervensystems
- Analgetika
- Agenten des sensorischen Systems
- Anästhetika
- Analgetika, nicht narkotisch
- Adrenerge Alpha-2-Rezeptor-Agonisten
- Adrenerge Alpha-Agonisten
- Adrenerge Agonisten
- Hypnotika und Beruhigungsmittel
- Anästhetika, lokal
- Dexmedetomidin
- Ropivacain
Andere Studien-ID-Nummern
- SM2-JH-14
- 2014-005651-89 (EudraCT-Nummer)
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