Biopsychosocial pain medicine and mind-brain-body science

Duloxetine and cognitive behavioral therapy with phone-based support for the treatment of chronic musculoskeletal pain: study protocol of the PRECICE randomized control trial

BACKGROUND

Chronic musculoskeletal pain (CMP) is the most common, disabling, and costly of all pain conditions. While evidence exists for the efficacy of both duloxetine and web-based cognitive behavioral therapy (CBT) as monotherapy, there is a clear need to consider study of treatment components that may complement each other. In addition, given the reported association between patient's adherence and treatment outcomes, strategies are needed to enhance participant's motivation to adopt and maintain continued use of newly learned pain coping skills from CBT.

METHODS

Two hundred eighty participants will be recruited from the primary care clinics of a large academic health care system in North Carolina. Participants with CMP will be randomized to one of three treatment arms: (1) combination treatment (duloxetine + web-based self-guided CBT) with phone-based motivational interviewing (MI), (2) combination treatment without phone-based MI, and (3) duloxetine monotherapy. Participants will be in the study for 24 weeks and will be assessed at baseline, week 13, and week 25. The primary outcome is the Brief Pain Inventory (BPI)-Global Pain Severity score, which combines BPI pain severity and BPI pain interference. Secondary measures include between-group comparisons in mean BPI pain severity and BPI pain interference scores. Data collection and outcome assessment will be blinded to treatment group assignment.

DISCUSSION

This randomized controlled trial (RCT) will determine if combination treatment with duloxetine and web-based CBT is superior to duloxetine monotherapy for the management of CMP. Furthermore, this RCT will determine the effectiveness of phone-based motivational interviewing in promoting the continued practice of pain coping skills, thereby enhancing treatment outcomes.

TRIAL REGISTRATION

NCT04395001 ClinicalTrials.gov. Registered on May 15, 2020.

How do patients and General Practitioners talk about pain and negotiate empathy in consultations? A direct observational study

The objective of this qualitative study in New Zealand was to investigate how general practitioners and patients discuss chronic pain in consultations. Chronic pain is a complex condition that defies many commonsense understandings. It is challenging to manage and patients can come to conclude that there is an empathy deficit. To our knowledge most, if not all, studies on this topic have recruited participants whose main presenting complaint is chronic pain. Forms of chronic pain are relatively common in the population and we thought it likely that at least some discussions may be rendered invisible via these recruiting practices. The study analysed data from the Applied Research on Communication in Health repository of audio transcripts and video-recorded consultations collected from a range of studies on a variety of topics, none of which were about chronic pain specifically. We searched the 256 transcripts looking for key words that might indicate that pain was at least part of the consultation. This yielded a large number of potentially relevant transcripts. These transcripts were assessed and reduced to 18 by excluding those that were about non-physical pain or pain that was expected to resolve relatively quickly. A medical specialist in chronic pain reviewed the resulting 18 and excluded two further transcripts giving us a final sample of 16. We conducted in-depth analysis of these consultations. Rather than confirming an empathy deficit, we found a much more complex deployment of empathy in the space where the two complex systems of chronic pain and general practice meet. These findings highlight the utility of analysing data originally generated for other purposes, with permission, and in a practical sense, highlight the importance of understanding empathy as highly contextual in 'real world' practice.

The Impact of a Daily Yoga Program for Women with Fibromyalgia

Background:

Fibromyalgia (FM) is characterized by widespread pain, sleep disturbance, negative affect, and stress and is notably difficult to treat. Individuals with FM have lower physical activity and endorse fears that exercise may worsen pain. Gentle daily yoga practice may allow a gradual increase in activity and positively impact many of these FM symptoms. This qualitative study investigated the impact of participation in a pilot trial of group and daily individual home yoga intervention on women with FM.

Materials and Methods:

Fifteen individuals participated in telephone interviews after participating in the yoga intervention, which included semi-structured questions to elicit insights and impressions of their experience. Responses were systematically coded and themes identified.

Results:

Five themes were identified: (1) physical/body perceptual changes, (2) practices affecting pain, (3) emotional changes, (4) practice motivators and barriers, and (5) group effect. Participants not only reported reductions in FM symptoms, including pain and stress, but also a positive impact on mood, sleep, and self-confidence.

Conclusions:

Participants enumerated both physical and psychological impact of starting yoga practice. Specific helpful poses and practices and important barriers were identified. Group practice and social connection with others with other FM patients was an important benefit to participants.

Cross-species examination of single- and multi-strain probiotic treatment effects on neuropsychiatric outcomes

Interest in elucidating gut-brain-behavior mechanisms and advancing neuropsychiatric disorder treatments has led to a recent proliferation of probiotic trials. Yet, a considerable gap remains in our knowledge of probiotic efficacy across populations and experimental contexts. We conducted a cross-species examination of single- and multi-strain combinations of established probiotics. Forty-eight human (seven infant/child, thirty-six young/middle-aged adult, five older adult) and fifty-eight non-human (twenty-five rat, twenty-seven mouse, five zebrafish, one quail) investigations met the inclusion/exclusion criteria. Heterogeneity of probiotic strains, substrains, and study methodologies limited our ability to conduct meta-analyses. Human trials detected variations in anxiety, depression, or emotional regulation (single-strain 55.6%; multi-strain 50.0%) and cognition or social functioning post-probiotic intake (single-strain 25.9%; multi-strain 31.5%). For the non-human studies, single- (60.5%) and multi-strain (45.0%) combinations modified stress, anxiety, or depression behaviors in addition to altering social or cognitive performance (single-strain 57.9%; multi-strain 85.0%). Rigorous trials that confirm existing findings, investigate additional probiotic strain/substrain combinations, and test novel experimental paradigms, are necessary to develop future probiotic treatments that successfully target specific neuropsychiatric outcomes.

Implementation of sustainable evidence-based practice for the assessment and management of pain in residential aged care facilities

Pain is common in residential aged care facilities (RACFs). In 2005, the Australian Pain Society developed 27 recommendations for good practice in the identification, assessment, and management of pain in these settings. This study aimed to address implementation of the standards and evaluate outcomes. Five facilities in Australia participated in a comprehensive evaluation of RACF pain practice and outcomes. Pre-existing pain management practices were compared with the 27 recommendations, before an evidence-based pain management program was introduced that included training and education for staff and revised in-house pain-management procedures. Post-implementation audits evaluated the program's success. Aged care staff teams also were assessed on their reports of self-efficacy in pain management. The results show that before the implementation program, the RACFs demonstrated full compliance on 6 to 12 standards. By the project's completion, RACFs demonstrated full compliance with 10 to 23 standards and major improvements toward compliance in the remaining standards. After implementation, the staff also reported better understanding of the standards (p < .001) or of facility pain management guidelines (p < .001), increased confidence in therapies for pain management (p < .001), and increased confidence in their training to assess pain (p < .001) and recognize pain in residents with dementia who are nonverbal (p = .003). The results show that improved evidence-based practice in RACFs can be achieved with appropriate training and education. Investing resources in the aged care workforce via this implementation program has shown improvements in staff self-efficacy and practice.

Movement coordination and differential kinematics of the cervical and thoracic spines in people with chronic neck pain

BACKGROUND

Research on the kinematics and inter-regional coordination of movements between the cervical and thoracic spines in motion adds to our understanding of the performance and interplay of these spinal regions. The purpose of this study was to examine the effects of chronic neck pain on the three-dimensional kinematics and coordination of the cervical and thoracic spines during active movements of the neck.

METHODS

Three-dimensional spinal kinematics and movement coordination between the cervical, upper thoracic, and lower thoracic spines were examined by electromagnetic motion sensors in thirty-four individuals with chronic neck pain and thirty-four age- and gender-matched asymptomatic subjects. All subjects performed a set of free active neck movements in three anatomical planes in sitting position and at their own pace. Spinal kinematic variables (angular displacement, velocity, and acceleration) of the three defined regions, and movement coordination between regions were determined and compared between the two groups.

FINDINGS

Subjects with chronic neck pain exhibited significantly decreased cervical angular velocity and acceleration of neck movement. Cross-correlation analysis revealed consistently lower degrees of coordination between the cervical and upper thoracic spines in the neck pain group. The loss of coordination was most apparent in angular velocity and acceleration of the spine.

INTERPRETATION

Assessment of the range of motion of the neck is not sufficient to reveal movement dysfunctions in chronic neck pain subjects. Evaluation of angular velocity and acceleration and movement coordination should be included to help develop clinical intervention strategies to promote restoration of differential kinematics and movement coordination.

Defining racial and ethnic disparities in pain management

BACKGROUND

Substantial pain prevalence is as high as 40% in community populations. There is consistent evidence that racial/ethnic minority individuals are overrepresented among those who experience such pain and whose pain management is inadequate.

QUESTIONS/PURPOSES

The objectives of this paper are to (1) define parameters of and summarize evidence pertinent to racial/ethnic minority disparities in pain management, (2) identify factors contributing to observed disparities, and (3) identify strategies to minimize the disparities.

METHODS

Scientific literature was selectively reviewed addressing pain epidemiology, differences in pain management of non-Hispanic whites versus racial/ethnic minority groups, and patient and physician factors contributing to such differences.

RESULTS

Racial/ethnic minorities consistently receive less adequate treatment for acute and chronic pain than non-Hispanic whites, even after controlling for age, gender, and pain intensity. Pain intensity underreporting appears to be a major contribution of minority individuals to pain management disparities. The major contribution by physicians to such disparities appears to reflect limited awareness of their own cultural beliefs and stereotypes regarding pain, minority individuals, and use of narcotic analgesics.

CONCLUSIONS

Racial/ethnic minority patients with pain need to be empowered to accurately report pain intensity levels, and physicians who treat such patients need to acknowledge their own belief systems regarding pain and develop strategies to overcome unconscious, but potentially harmful, negative stereotyping of minority patients.

Pharmacologic treatment for low back pain: one component of pain care

Analgesic medications are commonly used for low back pain (LBP). Evidence on the efficacy of pharmacologic therapy for LBP comes from clinical trials that have many limitations, including short-term studies and selective trial populations. Evidence currently supports the use of short-term pharmacologic treatment for LBP. However, the safety and efficacy of long-term pharmacologic therapy for LBP is uncertain and therefore best used with caution, monitoring, and as one component of a comprehensive paincare approach emphasizing rehabilitation.

The diagnostic accuracy of brief screening questions for psychosocial risk factors of poor outcome from an episode of pain: A systematic review

OBJECTIVE

To determine the diagnostic accuracy of brief screening questions for psychosocial risk factors predictive of poor outcome from an episode of pain.

METHODS

Six electronic databases were searched, content experts contacted, and reference and citation tracking performed. Studies were included that examined the diagnostic accuracy of 1-item screening or 2-item screening questions for depression, anxiety, fear-avoidance beliefs, social isolation, catastrophization, or somatization and were published in English. Studies were assessed for quality, and data extracted describing study characteristics and the diagnostic accuracy of brief screening questions.

RESULTS

Four cross-sectional studies met the inclusion criteria and all met 4 or more of our 6 method quality criteria. These studies examined the diagnostic accuracy of brief screening tools for depression (sensitivity = 50.5% to 82.1%, specificity = 71.0% to 90.6%, and overall accuracy = 74.6% to 80.6%) and anxiety (sensitivity 63.0% to 94.0%, specificity = 53.0% to 71.2%, and overall accuracy = 60.0% to 68.1%). No studies were identified that examined the diagnostic accuracy of brief screening questions for fear-avoidance beliefs, social isolation, catastrophization, and somatization.

DISCUSSION

Data were only available on the accuracy of brief screening instruments for depression and anxiety, and there was variability in the results. Head-to-head studies are required to determine if this variability reflects differential question accuracy or population characteristics, and studies that determine the diagnostic accuracy of brief screening questions for other common psychosocial risk factors would be useful.

Protection of endogenous enkephalin catabolism as natural approach to novel analgesic and antidepressant drugs

The most efficient drugs to alleviate severe pain are opioid compounds. However, their chronic use could be associated with serious drawbacks, such as tolerance, respiratory depression and constipation. Therefore, there is a need for compounds able to efficiently alleviate inflammatory and neurogenic pain following chronic treatment. The discovery that the endogenous opioid peptides, enkephalins, are inactivated by two metallopeptidases, neutral endopeptidase and aminopeptidase N, which can be blocked by synthetic dual inhibitors, represents a promising way to develop 'physiological' analgesics devoid of morphine side effects. These dual inhibitors also have antidepressant-like properties through enkephalin-related activation of delta-opioid receptors. This is expected to reduce the emotional component of pain in humans. This article reviews the promising data obtained for future development of a new class of analgesic that could be of major interest in a number of severe and chronic pain syndromes.

Chronic pain and comorbid mood and substance use disorders: a biopsychosocial treatment approach

Chronic pain is a colossal health care problem that is devastating to the individual afflicted with unremitting pain and frustrating to the beleaguered health care provider attempting to adequately manage this multifaceted disease. The biopsychosocial model of pain management is a promising approach that emphasizes evidence-based medication management in conjunction with cognitive-behavioral therapy and a graded exercise program. The patient with chronic pain and concomitant mood and/or substance use disorders is exceptionally challenging. Effective pharmacologic management of pain and comorbid mood disorders, including the thoughtful use of opioids, can have a dramatic effect in improving the quality of life in patients with chronic pain. The high prevalence of chronic pain in our society and the scarcity of experienced pain medicine physicians necessitate the development of a community-based systems approach to this complex patient population.