Can Brain Stimulation Enhance Outcomes Associated With Intensive Rehabilitation for Youth With Chronic Pain?
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 25
- 试验地点
- 2
- 主要终点
- Pain Intensity
研究概览
简要总结
Severe chronic pain is defined as pain persisting for three months or more that significantly impacts daily functioning. It is highly prevalent, occurring in 100,000 to 160,000 youth. If left unmanaged it can lead to persistent pain and mental health problems in adulthood, posing enormous costs to society ($7.2 billion CAD/year). In 2014, health professionals at the Alberta Children's Hospital (ACH) established a pediatric Intensive Pain Rehabilitation Program (IPRP) to target youth with severe chronic pain and consequent functional disability who do not respond to outpatient pain therapies. The IPRP at the ACH is a three-week intensive day-treatment intervention provided by an interdisciplinary team, which helps youth resume engagement in normal daily functioning. Following IPRP, youth reported less anxiety, less depressive symptoms, and greater function, although their self-reported pain remained unchanged. In August 2016, the investigators began to explore brain areas related to severe chronic pain in youth. The investigators scanned a subset of youth at the start (baseline) and end (discharge) of IPRP (23 youth with 2 brain scans). From baseline to discharge, the investigators saw decreases in activity in the dorsolateral prefrontal cortex (DLPFC). Decrease in DLPFC activity was related to better mental health outcomes. The DLPFC is a well-known target for non-invasive brain stimulation. Repeated brain stimulation has been used to treat adults, but not youth with chronic pain. For the first time, the investigators will use image-guided brain stimulation (37 minutes/day, 5 days/week) to enhance the brain changes observed with IPRP. The investigators will examine whether three weeks of brain stimulation helps to reduce pain symptoms in youth. The investigators will also compare pain, brain, and mental health outcomes to our historical program data. By adding brain stimulation to our pain intervention, the investigators have the chance to target an area of the brain investigators know to be altered by chronic pain to improve outcomes.
详细描述
Severe chronic pain in youth is debilitating, common, and has limited treatment options, rendering it as a major public health problem. Severe chronic pain is defined as pain persisting for three months or more that significantly impacts daily functioning (e.g. sleep, mental health, school, work, activity). It is highly prevalent, occurring in 100,000 to 160,000 youth in Canada - comparable to the rates of autism spectrum disorder. If left unmanaged, it can lead to persistent pain and mental health problems in adulthood, posing enormous costs to society ($7.2 billion CAD/year). Most treatments to address chronic pain take a "one-size-fits-all-approach," which does not account for comorbid mental health conditions, contributing to small treatment effects.
In 2014, the Vi Riddell Children's Pain and Rehabilitation Program at the Alberta Children's Hospital (ACH) established the first pediatric Intensive Pain Rehabilitation Program (IPRP) in Canada to target youth with severe chronic pain and consequent functional disability who do not respond to standard outpatient pain therapies. The IPRP at the ACH involves three- to sex-weeks of day-treatment rehabilitation, provided by an interdisciplinary team (e.g. Psychology, Physiotherapy, Family Therapy). This rehabilitative program teaches self-management strategies with the goal of helping youth and their families resume normal daily functioning. Similar to other intensive rehabilitation programs, at discharge from IPRP, youth reported less anxiety, less depressive symptoms and better functioning, although, their self-reported pain intensity remained unchanged. It is generally thought that by returning to normal daily activities, youth will learn to function with their pain, and their pain will dissipate over time. However, there is limited evidence to support this. Long-term follow-up of youth in IPRP revealed a reduction of pain interference in daily activities. However, at one-year post-IPRP, youth's self-reported ratings of depression and quality of life did not differ from their ratings prior to completing IPRP. In order to improve long-term recovery and reduce the burden of suffering on the individual, their family and society, evidence-based and targeted interventions are needed to reduce pain and pain-related disability in youth with severe chronic pain.
For a chronic pain treatment to be evidence-based, it needs to draw on the known neurobiological and psychological processes underlying the development and maintenance of severe chronic pain. In August 2016, investigators began scanning a subset of youth in our IPRP at baseline and again at discharge from the program. Preliminary analysis of this neuroimaging data (23 youth with 2 scans each) suggested decreased functional responses to emotional stimuli in the dorsolateral prefrontal cortex (DLPFC) from baseline to discharge of affected youth, commensurate with decreases in internalizing mental health symptoms.
The DLPFC is a large and functionally heterogeneous brain region. It is generally associated with driving appropriate behavioral responses, and top-down modulation. Therefore, with regards to pain it has been shown to be involved in both pain detection and in pain suppression. Given its involvement in pain modulation, it is feasible that the DLPFC could serve as a therapeutic target.
By targeting the DLPFC using repetitive transcranial stimulation (rTMS), the investigators may be able to enhance outcomes associated with IPRP. Work from our institution demonstrated that rTMS of the DLPFC is a safe and effective method for treating youth with treatment resistant major depressive disorder. In addition to treatment resistant major depressive disorder, rTMS of the DLPFC has also been found to be effective in managing chronic pain in adults. rTMS uses a magnetic field to non-invasively stimulate small targeted regions of the brain. The magnetic coil produces small electric currents in the region of the brain just under the coil via electromagnetic induction. Magnetic resonance imaging (MRI) can be used to help identify and target specific brain regions, such as the DLPFC, providing an individualized approach to treat the patient's symptoms. To date, rTMS has not been utilized to manage pain and comorbid mental health conditions in youth. Using an open-label clinical trial study design, the investigators will examine whether the addition of rTMS to IPRP reduces pain intensity and enhances brain and behavioral changes associated with standard IPRP care to improve outcomes of youth with severe chronic pain.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 10 Years 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Between the ages of 10-18 years
- •Patient has had the appropriate medical work-up
- •Participation in accessible, evidenced based pain therapies has not demonstrated return to functional goals
- •Pain is significantly impacting the patient's life and they are not meeting their functional goals in areas of life, which may include: physical function, sleep, self-care, school attendance/academic performance, social function, recreational engagement, and mood
- •Patient and family agree and understand that an active, self-management approach to functional restoration is the mainstay of treatment in the IPRP
排除标准
- •Significant developmental delay or brain injury
- •Functional neurological disorder/conversion disorder
- •Youth who require opioid weaning
- •Extensive medical needs and/or untreated psychiatric illness that would impede a rehabilitative approach to care.
研究组 & 干预措施
rTMS + IPRP
25 youth aged 10-18 years with severe chronic pain will be invited to partake in the Intensive Pain Rehabilitation Program, where they will receive Repeated Transcranial Magnetic Stimulation as one of their treatment interventions.
干预措施: Repeated Transcranial Magnetic Stimulation (rTMS) (Device)
rTMS + IPRP
25 youth aged 10-18 years with severe chronic pain will be invited to partake in the Intensive Pain Rehabilitation Program, where they will receive Repeated Transcranial Magnetic Stimulation as one of their treatment interventions.
干预措施: Intensive Pain Rehabilitation Program (IPRP) (Other)
IPRP
Youth within this arm will not be receiving the rTMS intervention. Rather, they will only be enrolled within the IPRP.
干预措施: Intensive Pain Rehabilitation Program (IPRP) (Other)
结局指标
主要结局
Pain Intensity
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Anxiety and Depressive Symptoms
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
Anxiety and depressive symptoms will be assessed using the PROMIS Pediatric Profile-25 Anxiety and Depression subscales. Participants will report if they experienced any of the symptoms in the past 7 days using a 5-point Likert scale (anchors: 0 = "never" and 4 = "almost always"). The subscales have demonstrated good construct validity (intercept and slope equal to or greater than 0.93) and excellent internal consistency (depressive symptoms, 4 items, alpha = 0.91; anxiety symptoms, 4 items, alpha = 0.90).
Posttraumatic Stress Disorder (PTSD) Symptoms
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
Youth PTSD symptomology will be assessed using the Child PTSD Symptom Scale (CPSS-V). The CPSS-V is a 20-item measure that maps on to the Diagnostic and Statistical Manual of Mental Disorders 5th Edition PTSD criteria, and assessed PTSD symptoms experienced by youth in the past month. Youth will be asked to identify something scary or upsetting that bothers them to think about. With that event in mind, they will be asked to respond to 20 items assessing PTSD symptoms on a 5-point Likert scale, ranging from "not at all" to "6 or more times a week/almost always." Total symptom severity scores are obtained by summing the 20 items (range: 0-80). A score of 31 or above indicates clinically elevated PTSD symptoms. The CPSS-V has excellent internal consistency, good test-retest reliability, and good convergent validity.
Pain Duration
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Presence
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Frequency
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Interference
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
Youth will complete the Patient-Reported Outcomes Measurement Information System (PROMIS) Pediatric Profile-25. The Pain Interference subscale uses 4 items to assess whether pain has interfered with youth's everyday activities in the past 7 days using a 5-point Likert scale (anchors: 0 = "never" and 4 = "almost always"). The PROMIS measures demonstrated good construct validity (intercept and slope equal or greater to 0.98) and internal consistency (pain interference, 4 items alpha = 0.85).
Brain imaging
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
Structural and functional imaging will be acquired using resting-state functional magnetic resonance imaging (fMRI) scan. Motion will be censored using the Artifact Detection Tools (ART). Cortical masks derived from FreeSurfer will be used as seed regions for fMRI functional connectivity analysis. Time courses for the dorsolateral prefrontal cortex (DLPFC) will be extracted and used as a regressor to identify correlations with all other brain regions. Second-level analyses will be used to test differences in functional connectivity over time and between groups. All statistical tests will be corrected for multiple comparisons.
Functional disability
时间窗: This outcome will be measured at discharge from the program, which is approximately 3 weeks from the time of admittance.
The Functional Disability Inventory (FDI) will be administered to assess functional disability. Youth will rate their level of difficulty in completing daily activities in a variety of settings (e.g. home, school) on a 5-point Likert scale ranging from 0 "no trouble" to 4 "impossible." Higher scores are indicative of greater pain-related disability. The FDI has high internal consistency at baseline (alpha = .90) and post-treatment (alpha = .87).
Pediatric Transcranial Magnetic Stimulation (TMS) Safety and Tolerability
时间窗: This outcome will be measured at Day 11.
Possible adverse events (headache, presyncope, nausea, etc.) will be screened and quantified as either mild, moderate, or severe. Any other potential side effects will be recorded and quantified.
Pain Presence
时间窗: This outcome will be measured at baseline.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Frequency
时间窗: This outcome will be measured at baseline.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Duration
时间窗: This outcome will be measured at baseline.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Intensity
时间窗: This outcome will be measured at baseline.
The commonly used Pain Questionnaire will be administered to measure the presence and characteristics of pain. Youth will rate the average frequency ("not at all" to "daily"), duration ("less than 1 hour" to "all day"), and intensity ("no pain" to "worst pain possible") of their pain.
Pain Interference
时间窗: This outcome will be measured at baseline.
Youth will complete the Patient-Reported Outcomes Measurement Information System (PROMIS) Pediatric Profile-25. The Pain Interference subscale uses 4 items to assess whether pain has interfered with youth's everyday activities in the past 7 days using a 5-point Likert scale (anchors: 0 = "never" and 4 = "almost always"). The PROMIS measures demonstrated good construct validity (intercept and slope equal or greater to 0.98) and internal consistency (pain interference, 4 items alpha = 0.85).
Brain imaging
时间窗: This outcome will be measured at baseline (upon admittance into the program).
Structural and functional imaging will be acquired using resting-state functional magnetic resonance imaging (fMRI) scan. Motion will be censored using the Artifact Detection Tools (ART). Cortical masks derived from FreeSurfer will be used as seed regions for fMRI functional connectivity analysis. Time courses for the dorsolateral prefrontal cortex (DLPFC) will be extracted and used as a regressor to identify correlations with all other brain regions. Second-level analyses will be used to test differences in functional connectivity over time and between groups. All statistical tests will be corrected for multiple comparisons.
Functional disability
时间窗: This outcome will be measured at baseline.
The Functional Disability Inventory (FDI) will be administered to assess functional disability. Youth will rate their level of difficulty in completing daily activities in a variety of settings (e.g. home, school) on a 5-point Likert scale ranging from 0 "no trouble" to 4 "impossible." Higher scores are indicative of greater pain-related disability. The FDI has high internal consistency at baseline (alpha = .90) and post-treatment (alpha = .87).
Anxiety and Depressive Symptoms
时间窗: This outcome will be measured at baseline.
Anxiety and depressive symptoms will be assessed using the PROMIS Pediatric Profile-25 Anxiety and Depression subscales. Participants will report if they experienced any of the symptoms in the past 7 days using a 5-point Likert scale (anchors: 0 = "never" and 4 = "almost always"). The subscales have demonstrated good construct validity (intercept and slope equal to or greater than 0.93) and excellent internal consistency (depressive symptoms, 4 items, alpha = 0.91; anxiety symptoms, 4 items, alpha = 0.90).
Posttraumatic Stress Disorder (PTSD) Symptoms
时间窗: This outcome will be measured at baseline.
Youth PTSD symptomology will be assessed using the Child PTSD Symptom Scale (CPSS-V). The CPSS-V is a 20-item measure that maps on to the Diagnostic and Statistical Manual of Mental Disorders 5th Edition PTSD criteria, and assessed PTSD symptoms experienced by youth in the past month. Youth will be asked to identify something scary or upsetting that bothers them to think about. With that event in mind, they will be asked to respond to 20 items assessing PTSD symptoms on a 5-point Likert scale, ranging from "not at all" to "6 or more times a week/almost always." Total symptom severity scores are obtained by summing the 20 items (range: 0-80). A score of 31 or above indicates clinically elevated PTSD symptoms. The CPSS-V has excellent internal consistency, good test-retest reliability, and good convergent validity.
Pediatric Transcranial Magnetic Stimulation (TMS) Safety and Tolerability
时间窗: This outcome will be measured at Day 1.
Possible adverse events (headache, presyncope, nausea, etc.) will be screened and quantified as either mild, moderate, or severe. Any other potential side effects will be recorded and quantified.
Pediatric Transcranial Magnetic Stimulation (TMS) Safety and Tolerability
时间窗: This outcome will be measured at Day 6.
Possible adverse events (headache, presyncope, nausea, etc.) will be screened and quantified as either mild, moderate, or severe. Any other potential side effects will be recorded and quantified.
次要结局
未报告次要终点
研究者
Jillian Vinall Miller
Assistant Professor
University of Calgary