- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01105871
Subjective Analgesic Effects of Naloxone and Virtual Reality (Narcan)
This study is designed to test a specific hypothesis exploring the neurophysiologic mechanism(s) that underlie the pain- relieving effects of immersive Virtual Reality (VR) as a non-pharmacologic pain management technique, using healthy volunteers experiencing carefully controlled thermal and/or electrical pain in the laboratory. Over the past decade, our research group has performed a series of NIH-funded investigations of VR analgesia - in both the clinical pain and laboratory pain settings - demonstrating its clinical efficacy and safety. In the current study we will test pharmacologic manipulation of VR analgesia (with the opioid analgesia antagonist naloxone). We anticipate that this theoretical work will provide a foundation for future clinical applications of immersive VR - whether used alone or in combination with other analgesic agents - and make immersive VR a more effective and more widely used analgesic tool for the treatment of clinical pain.
Our previous work with immersive VR indicates that its use during a painful event can reduce subjective pain reports during both acute clinical and laboratory pain by 20-50% [1]. Furthermore, we have shown that effective VR analgesia is associated with reduced pain-related brain activity that is quantitatively and qualitatively comparable to clinically relevant doses of systemic opioid analgesics [2]. The laboratory pain protocol proposed in the current application is identical to the UW HSD-approved protocol used in our previous studies (#25296 - "Reducing Brief Thermal and Electrical Pain"). What is specifically different in the current protocol is the use of naloxone to determine whether VR analgesia operates through an endogenous opioid-dependent mechanism or not. The results of this study will not only suggest the mechanism of action of VR analgesia, but also allow us to more effectively apply immersive VR analgesia in the clinically pain setting through its thoughtful combination with well-established pharmacologic analgesic techniques, such as opioid analgesia administration.
The specific aim of this study and the hypothesis it tests are as follows: To determine the extent to which subjective analgesic effects of VR analgesia are inhibited by opioid receptor antagonism with naloxone. Hypothesis - VR analgesia will not be inhibited by systemic opioid receptor antagonism, suggesting that VR analgesia is not mediated by release of endogenous opiates and/or by activation of opioid-dependent descending central nervous system pathways.
Studieoversigt
Undersøgelsestype
Tilmelding (Forventet)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
Washington
-
Seattle, Washington, Forenede Stater, 98195
- University of Washington Medical Center
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Healthy males and females between the ages of 18 and 60 years
- Ability to communicate orally
- Body mass index of 30 or less
Exclusion Criteria:
- Women who are pregnant, trying to become pregnant or who are breastfeeding.
- History of alcohol or substance abuse
- Major medical illness, including history or migraine headaches
- Allergy or sensitivity to narcotics or naloxone
- Current use of analgesics including acetaminophen, non-steroidal anti-inflammatories, or opioids
- Predisposition to severe motion sickness
- Unusual sensitivity or lack of sensitivity to pain
- Sensitive skin
- Urine toxicology positive for opioids
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Støttende pleje
- Tildeling: Randomiseret
- Interventionel model: Enkelt gruppeopgave
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
---|---|
Aktiv komparator: naloxone
4 mg in 10 ml saline iv bolus
|
4 mg naloxone in 10 ml saline given iv bolus
Andre navne:
|
Placebo komparator: saline placebo
10 ml of normal saline iv bolus
|
10 ml of normal saline iv bolus
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
---|---|
Pain scoring from sessions where naloxone is given or placebo.Pain scoring is a questionnaire using analog scale (1-10).
Tidsramme: Outcome measurements will be assessed when all research and analysis has been completed. We project the approximate time frame to be about 18 months.
|
Outcome measurements will be assessed when all research and analysis has been completed. We project the approximate time frame to be about 18 months.
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Samuel R Sharar, MD, University of Washington
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Forventet)
Studieafslutning (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 35974-D
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