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- Klinische proef NCT02166164
Characterization of Secondary Hyperalgesia in Healthy Volunteers
In this prospective trial we aim to investigate the intra-individual and inter-individual variance in secondary hyperalgesia following pain elicited by the experimental pain model: Brief Thermal Sensitization.
Furthermore we wish to investigate how precise the psychological tests, Pain Catastrophizing Scale and Hospital Anxiety and Depression Scale predict the size of the area of secondary hyperalgesia.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Studietype
Inschrijving (Verwacht)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Copenhagen, Denemarken, 2100
- Department of anaesthesia and surgery, 4231, Rigshospitalet
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Age >18 years and <35 years
- Speak and understand Danish
- Male gender
- Test subjects who have understood and signed the informed consent
- No prescription medicine during the last 30 days
Exclusion Criteria:
- Test subjects that cannot cooperate to the test
- Test subjects with an alcohol and/or substance abuse, assessed by the investigator
- Test subjects, who have consumed one or several types of analgesics 2 <days before the study
- Test subjects, who have consumed antidepressant medication during the last 30 days before the study
- Test subjects with chronic pain
- Test subjects with psychiatric diagnoses
- Test subjects with tattoos on the extremities
- Body Mass Index of >30 or <18
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: NVT
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Experimenteel: Experiemental pain models
all study participants will be tested with the same experimental pain models: Brief thermal sensitization, Long thermal stimulation, and Heat-pain-detection threshold.
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Een klein deel van de huid van de studiedeelnemers wordt gedurende 3 minuten verwarmd tot 45 graden Celsius, gevolgd door evaluatie van secundaire hyperalgesie.
Andere namen:
A small area of the skin of the study participants are heated to 45 degrees celsius for 1 minute.
During the 1 minute period, the study participant will continually report pain on an electronic visual analog scale.
Andere namen:
The threshold for heat pain are evaluated by heating a small area of the study participants skin. When the study participant feels pain, the temperature (degrees celsius) is registered. 4 threshold measurements per session. Heat pain threshold is defined as the average temperature of the 4 measurements.
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Change in area of secondary hyperalgesia following brief thermal sensitization
Tijdsspanne: Study day 1, 2, 3, and 4. A minimum of 4 weeks.
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To determine the intra- and inter-individual variance, and the inter- and intra-observer variance of the secondary hyperalgesia areas following brief thermal sensitization on 4 separate experimental days with two different observers.
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Study day 1, 2, 3, and 4. A minimum of 4 weeks.
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Score of Pain Catastrophizing Scale
Tijdsspanne: 7 days
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How precise does the score of the Pain Catastrophizing Scale predict the size of the area of secondary hyperalgesia?
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7 days
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Score of Hospital Anxiety and Depression Scale
Tijdsspanne: 7 days
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How precise does the score of the Hospital Anxiety and Depression Scale predict the size of the area of secondary hyperalgesia?
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7 days
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Score of Subscales of Pain Catastrophizing Scale and Hospital Anxiety and Depression Scale
Tijdsspanne: 7 days
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How precise do the subscales in the two psychological tests (PCS-rumination, PCS-magnification, PCS-helplessness, and HADS-Anxiety, HADS-Depression) predict the size of the area of secondary hyperalgesia?
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7 days
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Heat-pain-detection threshold registered by degrees celsius
Tijdsspanne: 1 minute per session
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How precise do the Heat-pain-detection threshold evaluated on the 4 experimental days predict the size of the area of secondary hyperalgesia on the respective 4 experimental days? 4 sessions of Heat-pain-detection threshold on 4 separate experimental days with 1 session per experimental day.
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1 minute per session
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Pain following Long Thermal Stimulation, evaluated by maximum on the visual analog scale
Tijdsspanne: 1 minute per session
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How precise does the Max.
VAS-score following Long Thermal Stimulation evaluated on the 4 experimental days predict the size of the area of secondary hyperalgesia on the respective 4 experimental days? 4 sessions of Long Thermal Stimulation on 4 separate experimental days with 1 session per experimental day.
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1 minute per session
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Pain following Long Thermal Stimulation, evaluated by Area under the curve of the visual analog scale.
Tijdsspanne: 1 minute per session
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How precise does the VAS-Area Under the Curve following Long Thermal Stimulation evaluated on the 4 experimental days predict the size of the area of secondary hyperalgesia on the respective 4 experimental days? 4 sessions of Long Thermal Stimulation on 4 separate experimental days with 1 session per study day.
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1 minute per session
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Medewerkers en onderzoekers
Sponsor
Medewerkers
Onderzoekers
- Studie directeur: Jørgen B Dahl, MD, Doc. Med, Consultant, Department of anaesthesiology, dep. Z, Bispebjerg Hospital, Denmark
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- SM1-MSH-2014
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