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.
研究概览
地位
研究类型
注册 (预期的)
阶段
- 不适用
联系人和位置
学习地点
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Copenhagen、丹麦、2100
- Department of anaesthesia and surgery, 4231, Rigshospitalet
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
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
学习计划
研究是如何设计的?
设计细节
- 主要用途:基础科学
- 分配:不适用
- 介入模型:单组作业
- 屏蔽:无(打开标签)
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的: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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研究参与者的一小块皮肤被加热到 45 摄氏度 3 分钟,然后评估继发性痛觉过敏。
其他名称:
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.
其他名称:
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.
其他名称:
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Change in area of secondary hyperalgesia following brief thermal sensitization
大体时间: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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次要结果测量
结果测量 |
措施说明 |
大体时间 |
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Score of Pain Catastrophizing Scale
大体时间: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
大体时间: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
大体时间: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
大体时间: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
大体时间: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.
大体时间: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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合作者和调查者
调查人员
- 研究主任:Jørgen B Dahl, MD, Doc. Med, Consultant、Department of anaesthesiology, dep. Z, Bispebjerg Hospital, Denmark
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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