- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00672737
Study of Pain Processing in Subjects Suffering From Obstructive Sleep Apnea
Experimental Pain Processing and Autonomic Function in Subjects Suffering From Obstructive Sleep Apnea
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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California
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Stanford, California, United States, 94305
- Stanford University School of Medicine
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:1. Male 2 .18 - 55 years of age 3. Body mass index (BMI) lower or equal to 30 kg/m2 4. Absence of severe systemic disease that results in functional limitations (i.e. poorly controlled hypertension, angina pectoris, prior myocardial infarction, pulmonary disease that limits activity) 5.Subjects must be able to comprehend spoken and written English
Exclusion Criteria:1. Major psychiatric, neurological, or neuromuscular disorder 2. Known diabetes mellitus or thyroid disease 3. Allergy to study medication (remifentanil) 4. History of addiction 5. Alcohol consumption which exceeds 2 drinks per day and /or drug abuse. 6. Chronic or acute use of opioids, or other medications affecting the CNS.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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Males at risk for OSA
Males at risk for obstructive sleep apnea were invited to have a "sleep study" either at home or at Stanford Sleep Center. A week after their sleep study (Polysomnography), all volunteers underwent quantitative sensory testing in the laboratory, during which their pain thresholds and tolerances to heat (Heat pain threshold and tolerance) and cold (Cold pain threshold and tolerance) stimuli were assessed, under two different concentrations (1 and 2 mcg/mL, in randomized order) of remifentanil, a short-acting opioid, given as a computer-controlled infusion. |
Remifentanil was administered as a computer-controlled infusion, targeting two different effect site concentrations, 1 and 2 mcg/mL, in randomized order.
Ice water was used to assess cold-related pain threshold and tolerance, defined as the time that the volunteers could keep their hands in the water before they started feeling pain or this feeling becomes unbearable, for threshold and tolerance, respectively.
TSAII Neuroanalyzer (Medoc Advanced Medical Systems, Durham, NC), was used to assess the heat-related pain and tolerance of the volunteers defined as the respective temperatures where they started feeling as painful or unbearable.
All volunteers underwent a polysomnography study at home or at Stanford Sleep Center, approximately one week before their experimental pain assessment in the laboratory
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Experimental Cold-induced Pain - IGFBP-1
Time Frame: 2 to 3 weeks
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The effect of insulin growth factor binding protein-1 (IGFBP-1), a serum hypoxia marker, on the change of cold-induced pain thresholds under remifentanil was estimated using a mixed linear regression model.
The results were expressed by the estimated beta (95% CI), indicating how much the change in the cold pain threshold (expressed in seconds) under remifentanil, was altered per unit of change in the IGFBP-1.
For example, for every 1-pg/mL increase in the serum level of IGFBP-1, cold pain threshold will additionally increase by 0.0025 seconds for every 1-mcg/mL increase in the plasma level of remifentanil.
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2 to 3 weeks
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Experimental Heat-induced Pain - IGFBP-1
Time Frame: 2 to 3 weeks
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The effect of arterial oxyhemoglobin desaturation during sleep (chronic intermittent hypoxia expressed by insulin growth factor binding protein-1 (IGFBP-1), a serum hypoxia marker, on the change of heat-induced pain thresholds under remifentanil was estimated using a mixed linear regression model.
The results were expressed by the estimated betas (95% CI), indicating how much the change in the heat pain threshold (expressed in C') under remifentanil, was altered per unit of change in the IGFBP-1.
For example, for every 1-pg/mL increase in serum level of IGFBP-1, the heat pain threshold will additionally decrease by 0.0001 'C for every 1-mcg/mL increase in the plasma level of remifentanil.
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2 to 3 weeks
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Experimental Cold-induced Pain - SaO2
Time Frame: 2 to 3 weeks
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The effect of arterial oxyhemoglobin desaturation during sleep (chronic intermittent hypoxia expressed by nadir SaO2 during polysomnography) on the change of cold-induced pain thresholds under remifentanil was estimated using a mixed linear regression model.
The results were expressed by the estimated betas (95% CI), indicating how much the change in the cold pain threshold (expressed in seconds) under remifentanil, was altered per unit of change in the SaO2.
For example, for every 1-%-absolute decrease in the nadir SaO2, the cold pain threshold will additionally increase by 0.9694 seconds for every 1-mcg/mL increase in the plasma level of remifentanil.
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2 to 3 weeks
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Experimental Heat-induced Pain - SaO2
Time Frame: 2 to 3 weeks
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The effect of arterial oxyhemoglobin desaturation during sleep (chronic intermittent hypoxia expressed by nadir SaO2 during polysomnography), on the change of heat-induced pain thresholds under remifentanil was estimated using a mixed linear regression model.
The results were expressed by the estimated betas (95% CI), indicating how much the change in the heat pain threshold (expressed in C') under remifentanil, was altered per unit of change in the SaO2.
For example, for every 1-%-absolute decrease in the nadir SaO2, the heat pain threshold will additionally increase by 0.0172 'C for every 1-mcg/mL increase in the plasma level of remifentanil.
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2 to 3 weeks
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Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Nervous System Diseases
- Respiratory Tract Diseases
- Respiration Disorders
- Sleep Disorders, Intrinsic
- Dyssomnias
- Sleep Wake Disorders
- Signs and Symptoms, Respiratory
- Sleep Apnea Syndromes
- Sleep Apnea, Obstructive
- Apnea
- Physiological Effects of Drugs
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Analgesics, Opioid
- Narcotics
- Remifentanil
Other Study ID Numbers
- SU-01222008-985
- 10374
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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