HRV biofeedback for pediatric irritable bowel syndrome and functional abdominal pain: a clinical replication series

Mind-Body Interventions for Youth with Chronic Medical Conditions: A Scoping Review of the Literature

Background and purpose: Little is known about the applicability, utilization, and effectiveness of mind-body interventions (MBIs) for conditions that are not predominantly pain, neoplastic, or psychiatric, particularly in pediatric patients. This scoping review describes research pertaining to such interventions in youth with nonpain, noncancer, and nonpsychiatric predominant chronic medical conditions. Methods: Searches of EBSCO CINAHL, Elsevier Scopus, Ovid for MEDLINE, and Ovid PsycInfo were conducted to investigate MBIs in youth under 18 years of age with nonpain, noncancer, and nonpsychiatric predominant chronic medical conditions. Articles published between 2010 and 2020 were included. Abstracts were screened by three authors for inclusion, and disagreements were resolved by a designated author. Selected full-text articles were divided among all authors for review of study quality, intervention feasibility and acceptability, and effectiveness. Results: The search yielded 1010 titles with 15 meeting the final inclusion criteria, studying a total of 641 youth. Participants ranged in age from 6 to 19 years (included studies had data on participants <18 years reported separately); 61.5% were female (n = 394) and 38.5% were male (n = 247). The two most common conditions studied were asthma and irritable bowel syndrome, with yoga being the most popular intervention. Overall, MBIs showed promising preliminary evidence for improving symptoms and quality of life in youth with chronic medical conditions. Conclusion: MBIs have been successfully delivered and show promise in symptom palliation and quality of life improvement for youth with a variety of chronic medical conditions. More data from high-quality randomized controlled trials are needed to further characterize the effectiveness of specific modalities for specific conditions.

Designing and developing a nature-based virtual reality with heart rate variability biofeedback for surgical anxiety and pain management: evidence from total knee arthroplasty patients

OBJECTIVES

Total knee arthroplasty (TKA) is one of the most common joint surgeries, with over a million procedures performed annually in the US. Over 70% of patients report moderate to high pain and anxiety surrounding TKA surgery, and 96% are discharged with an opioid prescription. This population requires special attention as approximately 90% of TKA patients are older adults and one of the riskiest groups prone to misusing opioids. This study aimed to develop and compare the efficacy of nature-based virtual reality (VR) with heart rate variability biofeedback (HRVBF) to mitigate surgical pain and anxiety.

METHODS

This randomized control trial recruited 30 patients (mean age = 66.3 ± 8.2 years, 23 F, 7 M) undergoing TKA surgery and randomly assigned to a control, 2D video with HRVBF, or VR with HRVBF group. A visual analog scale (VAS) was used to measure pain levels before and after the intervention. In addition, a second VAS and the State-Trait Anxiety Inventory (STAI) were used to measure anxiety before and after the intervention. Electrocardiogram (ECG) was used to continuously measure HRV and respiration rate in preoperative and postoperative settings.

RESULTS

VR and 2D-video with HRVBF decreased pain and anxiety post-intervention compared with the control group, p's <.01. On analyzing physiological signals, both treatment groups showed greater parasympathetic activity levels, and VR with HRVBF reduced pain more than the 2D video, p < .01.

CONCLUSIONS

Nature-based VR and 2D video with HRVBF can mitigate surgical pain and anxiety. However, VR may be more efficacious than 2D video in reducing pain.

Feasibility and Acceptability of Biofeedback-Based Virtual Reality System Use in Children and Adolescents Undergoing Surgery: Phase 1 of a Pilot Observational Study

BACKGROUND

Biofeedback-based virtual reality (VR-BF) is a novel, nonpharmacologic method for teaching patients how to control their breathing, which in turn increases heart rate variability (HRV) and may reduce pain. Unlike traditional forms of biofeedback (BF), VR-BF is delivered through a gamified virtual reality environment, increasing the accessibility of BF. This is the first study to systematically integrate VR-BF use in the pediatric perioperative setting, with the ultimate goal of evaluating the efficacy of VR-BF to reduce pain, anxiety, and opioid consumption once feasibility and acceptability has been established.

OBJECTIVE

The primary objective was to develop a clinical trial protocol for VR-BF use in the pediatric perioperative setting, including preoperative education/training and postoperative application of VR-BF in children undergoing surgery. A secondary objective was to evaluate the patient/parent experience with VR-BF.

METHODS

A total of 23 patients (12-18 years of age) scheduled for surgery at Nationwide Children's Hospital were recruited using purposive sampling. Following training, participants independently completed a daily, 10-minute VR-BF session for seven days before surgery and during their inpatient stay. Participants could use VR-BF up to two weeks after hospital discharge. Patient and session-level data of VR-BF usage and achievement of target HRV parameters were measured to identify the optimal frequency and duration of sessions before and after surgery for this population. Standardized questionnaires and semi-structured interviews were conducted to obtain qualitative information about patients' experiences with VR-BF.

RESULTS

Patient-level data indicated that the highest odds of achieving 1 session under target HRV parameters was after 4 sessions (OR 4 vs. 3 sessions=5.1, 95% CI 1.3-20.6; OR 3 vs. 2 sessions=16.6, 95% CI 1.2-217.0). Session-level data showed that a session duration of 9 to 10 minutes provided the greatest odds of achieving 1 session under target HRV parameters (OR 9 vs. 8 minutes=1.3, 95% CI 1.1-1.7; OR 8 vs. 7 minutes=1.4, 95% CI 1.1-1.8; OR 10 vs. 9 minutes=1.0, 95% CI 0.9-1.2). Qualitative data revealed patient satisfaction with the VR-BF technology, particularly in managing perioperative stress (n=17, 85%). Few patients reported VR-BF as beneficial for pain (n=8, 40%).

CONCLUSIONS

Children and adolescents undergoing surgery successfully learned behavioral strategies with VR-BF with once-daily 10-minute sessions for 5 days. To integrate VR-BF as a therapeutic intervention in a subsequent clinical trial, patients will be instructed to complete three 10-minute sessions a day for 7 days after surgery.

CLINICALTRIAL

ClinicalTrials.gov; NCT04943874; https://clinicaltrials.gov/ct2/show/NCT04943874.

Sleep Disorders and Chronic Pain Syndromes in the Pediatric Population

Sleep problems are widespread in children and adolescents suffering from chronic pain disorders. Sleep loss intensifies the experience of pain and is detrimental to the budding self-efficacy of a young individual with limitless horizons. Addressing sleep disorders may prevent the chronification of pain and prevent adverse health outcomes, such as functional impairment, psychiatric comorbidities and overall poor quality of life. This review will explore the cyclical nature between sleep, pain and mood, as well as the functional impact of this relationship on children and adolescents. There will be a discussion about sleep assessment and diagnostic testing, followed by a description of sleep disturbances found in specific pain conditions, ranging from headache, musculoskeletal/abdominal pain, to rheumatologic disorders. Finally, there will be a brief review of pharmacologic and behavioral interventions designed to improve sleep quality, and when possible, to alleviate pain.

Methods for Heart Rate Variability Biofeedback (HRVB): A Systematic Review and Guidelines

Heart Rate Variability Biofeedback (HRVB) has been widely used to improve cardiovascular health and well-being. HRVB is based on breathing at an individual's resonance frequency, which stimulates respiratory sinus arrhythmia (RSA) and the baroreflex. There is, however, no methodological consensus on how to apply HRVB, while details about the protocol used are often not well reported. Thus, the objectives of this systematic review are to describe the different HRVB protocols and detect methodological concerns. PsycINFO, CINALH, Medline and Web of Science were searched between 2000 and April 2021. Data extraction and quality assessment were based on PRISMA guidelines. A total of 143 studies were finally included from any scientific field and any type of sample. Three protocols for HRVB were found: (i) "Optimal RF" (n = 37), each participant breathes at their previously detected RF; (ii) "Individual RF" (n = 48), each participant follows a biofeedback device that shows the optimal breathing rate based on cardiovascular data in real time, and (iii) "Preset-pace RF" (n = 51), all participants breathe at the same rate rate, usually 6 breaths/minute. In addition, we found several methodological differences for applying HRVB in terms of number of weeks, duration of breathing or combination of laboratory and home sessions. Remarkably, almost 2/3 of the studies did not report enough information to replicate the HRVB protocol in terms of breathing duration, inhalation/exhalation ratio, breathing control or body position. Methodological guidelines and a checklist are proposed to enhance the methodological quality of future HRVB studies and increase the information reported.

Paediatric pain management: from regional to virtual

PURPOSE OF REVIEW

Due to increased interest in opioid-sparing multimodal analgesic strategies both inside and outside of the operating room, anaesthesiologists have started to look towards regional anaesthesia as well as nonpharmacological pain-reducing techniques. The purpose of this article is to discuss current trends and recent developments in regional anaesthesia and virtual reality for paediatric pain management.

RECENT FINDINGS

The development of novel fascial plane blocks has expanded regional options for anaesthesiologists, especially when neuraxial anaesthesia is not a viable or straightforward option. Other regional techniques, such as spinal anaesthesia and continuous epidural analgesia for infants and neonates, are becoming more popular, as more paediatric anaesthesiologists become familiar with these techniques. Virtual reality for paediatric pain management is a relatively new area of study that has shown promise, but more research needs to be done before widespread adoption of this practice becomes a reality. Various preexisting pain-reducing strategies such as distraction and biofeedback are being integrated with virtual reality to help optimize its effect on pain and anxiety for paediatric patients.

SUMMARY

Regional anaesthesia and virtual reality are valuable tools that serve to alleviate pain in paediatric patients. Advances are being made within both fields in various healthcare settings for different types of pain. Over the next few years, they will likely both play an increasing role in paediatric pain management.

Impact of auricular percutaneous electrical nerve field stimulation on gut microbiome in adolescents with irritable bowel syndrome: A pilot study

OBJECTIVES

Percutaneous electrical nerve field stimulation (PENFS) has documented efficacy for irritable bowel syndrome (IBS) via plausible vagal neuromodulation effects. The vagus nerve may affect gut microbiome composition via brain-gut-microbiome signaling. We aimed to investigate gut microbiome alterations by PENFS therapy in adolescent IBS patients.

METHODS

A prospective study of females with IBS aged 11-18 years receiving PENFS therapy for 4 weeks with pre- and post-intervention stool sampling was conducted. Outcome surveys completed pre-therapy, weekly, and post-therapy included IBS-Severity Scoring System (IBS-SSS), Visceral Sensitivity Index (VSI), Functional Disability Inventory (FDI), and the global symptom response scale (SRS). Bacterial DNA was extracted from stool samples followed by 16S rRNA amplification and sequencing. QIIME 2 (version 2022.2) was used for analyses of α and β diversity and differential abundance by group.

RESULTS

Twenty females aged 15.6 ± 1.62 years were included. IBS-SSS, VSI, and FDI scores decreased significantly after PENFS therapy (P < 0.0001, P = 0.0003, P = 0.0004, respectively). No intra- or interindividual microbiome changes were noted pre- versus post-therapy or between responders and non-responders. When response was defined by 50-point IBS-SSS score reduction, α diversity was higher in responders compared with non-responders at week 4 (P = 0.033). There was higher abundance of Blautia in excellent responders versus non-responders.

CONCLUSIONS

There were no substantial microbial diversity alterations with PENFS. Subjects with excellent therapeutic response showed an enrichment of relative abundance of Blautia, which may indicate that patients with specific microbial signature have a more favorable response to PENFS.

Feasibility and acceptability of perioperative application of biofeedback-based virtual reality versus active control for pain and anxiety in children and adolescents undergoing surgery: protocol for a pilot randomised controlled trial

INTRODUCTION

Current clinical applications of virtual reality (VR) provide patients with transient pain relief during acutely painful events by redirecting attention. Biofeedback (BF) is a mind-body therapy that effectively produces sustained pain reduction, but there are obstacles to its routine use. Combined, BF-based VR (VR-BF) may increase accessibility while enhancing the benefits of BF. VR-BF has yet to be employed in perioperative care, and as such, no defined treatment protocol for VR-BF exists. The primary aim of this study is to assess the feasibility of the perioperative use of VR-BF in children and adolescents. The secondary aims are to assess the acceptability of VR-BF and to collect pilot efficacy data.

METHODS AND ANALYSIS

This is a single-centre, randomised controlled pilot clinical trial. A total of 70 patients (12-18 years) scheduled for surgery anticipated to cause moderate to severe pain with ≥1 night of hospital admission will be randomised to one of two study arms (VR-BF or control). Participants randomised to VR-BF (n=35) will use the ForeVR VR platform to engage their breathing in gamified VR applications. Participants randomised to control (n=35) will interact with a pain reflection app, Manage My Pain. The primary outcome is feasibility of VR-BF use in adolescents undergoing surgery as assessed through recruitment, enrolment, retention and adherence to the protocol. Secondary outcomes are acceptability of VR-BF and pilot efficacy measures, including pain, anxiety and opioid consumption.

ETHICS AND DISSEMINATION

The protocol was approved by the Nationwide Children's Hospital Institutional Review Board (IRB #STUDY00002080). Patient recruitment begins in March 2023. Written informed consent is obtained for all participants. All information acquired will be disseminated via scientific meetings and published in peer-reviewed journals. Data will be available per request and results will be posted on ClinicalTrials.gov.

TRIAL REGISTRATION NUMBER

ClinicalTrials.gov Registry (NCT04943874).

A Hypothetical Case Example Illustrating the Importance of a Multidisciplinary Approach to Treating Chronic/Functional Abdominal Pain in Pediatric Patients

Irritable bowel syndrome (IBS) can have a substantial impact on the physical, academic, and psychosocial functioning of pediatric patients. As a functional gastrointestinal disorder, pediatric patients with IBS are thought to benefit from a multidisciplinary approach to target the biopsychosocial factors of this condition. In this co-authored article by a Pediatric Gastroenterologist, Pediatric Pain and Palliative Care specialist and Pediatric GI Psychologist, we present a hypothetical case of a pediatric patient who will undergo evaluation and treatment by each of these specialists demonstrating how a collaborative effort amongst multidisciplinary specialists is the ideal approach to care.

Heart Rate Variability biofeedback therapy for children and adolescents with chronic pain: A pilot study

PURPOSE

As a brief, noninvasive, cost-effective, and technology-driven therapy, biofeedback is a promising and welcomed clinical intervention for children and adolescents with pediatric chronic pain conditions. The aim of this pilot study was to explore the application of a brief Heart Rate Variability (HRV) biofeedback intervention supplemented by at-home breathing practice as a tool for reducing symptomatology associated with chronic pain in a pediatric urban hospital setting.

DESIGN AND METHODS

Twenty-one participants aged 10-17 years (M = 14.05, SD = 1.91; 76% female) and their caregivers completed the study. Participants were randomized to either 1) receive immediate biofeedback treatment including at-home breathing practice or 2) to be placed on a 4-week waitlist and then enrolled in the biofeedback treatment. Study outcomes included self-reported pain intensity, health-related quality of life (HRQOL), and anxiety sensitivity. HRV data were obtained from biofeedback sessions.

RESULTS

Following biofeedback treatment, participants achieved significant reductions in self-reported pain intensity, higher levels of self-reported school functioning, and increased HRV, as measured by Blood Volume Pulse (BVP) amplitude. Participants in the waitlist group experienced an increase in pain intensity during the waitlist period.

CONCLUSION

Further research is needed to understand the mechanisms underlying HRV biofeedback and its treatment of pediatric chronic pain.

PRACTICE IMPLICATIONS

Nurses are ideal practitioners for biofeedback given their training in physiology and background in healthcare and should be encouraged to explore training in this area. Suggested biofeedback-related apps and mobile devices to share with patients at bedside are provided.

Is heart rate variability biofeedback useful in children and adolescents? A systematic review

BACKGROUND

Heart rate variability (HRV) is considered as an index of both physical and emotional health, and biofeedback aiming to increase the level of HRV has demonstrated extensive beneficial effects. Although HRV biofeedback is commonly and reliably applied in adults, the use of this technique, alone or in addition to other treatments, in children and adolescents has not been widely explored to date.

METHODS

This systematic review following PRISMA guidelines covers all human studies using HRV biofeedback in children and adolescents. A literature search was conducted in PsycINFO, PubMed and Scopus, and a standardized methodological quality assessment was performed.

RESULTS

Results showed the efficiency of HRV biofeedback sessions with children and adolescents to reduce physical and mental health-related symptoms and enhance well-being.

CONCLUSIONS

These findings underline the therapeutic value of using HRV biofeedback as a complement to more conventional behavioural and cognitive interventions to help children to manage stress and/or pain. Capitalizing on the identified strengths and shortcomings of available results, we propose research avenues as well as evidence-based clinical guidelines for using HRV biofeedback in clinical paediatric settings.

Mind-Body and Psychosocial Interventions May Similarly Affect Heart Rate Variability Patterns in Cancer Recovery: Implications for a Mechanism of Symptom Improvement

Background:

Advancements in early detection and treatment of cancer have led to increased survival rates and greater need to identify effective supportive care options for resolving symptoms of survivorship. Many non-pharmacological approaches to symptom management during and after cancer treatment involve emotional self-regulation as a central strategy for improving well-being. Identifying commonalities among these strategies’ mechanisms of action may facilitate understanding of what might be useful for optimizing intervention effects. Heart rate variability (HRV) parameters are indicative of improved autonomic nervous system (ANS) balance and resiliency and reduced emotional distress and are thus identified as a mechanism to discuss as a marker of potential for intervention efficacy and a target for optimization.

Methods:

HRV data from 2 studies, 1 examining a mind-body intervention and 1 examining a psychosocial intervention, are presented as a point of discussion about preliminary associations between the interventions, change in HRV, and emotional distress reduction.

Results:

HRV significantly decreased in sympathetic activity in response to a mind-body intervention (Qigong/Tai Chi), and increased vagal tone in response to a psychosocial (storytelling) intervention. In both, these changes in HRV parameters were associated with improved emotional states.

Conclusion:

Our preliminary data suggest that HRV may serve as an important marker of underlying changes that mediate emotional regulation; this observation deserves further investigation. If identified as a worthy target, focusing on interventions that improve HRV within the context of interventions for cancer patients may be important to key outcomes and clinical practice.

"A journey to learn about pain": the development and validation of a comic book about pain neuroscience education for children

BACKGROUND

Pain education resources for children using appropriate language and illustrations remain scarce.

OBJECTIVES

We aimed to summarize the development process and testing for face and content validity of a structured comic book about pain education for children.

METHODS

A first draft of a comic book was developed (Portuguese and English) based on pain education concepts. Experts in pediatric pain from different countries analyzed content, objectives, language, illustrations, layout, motivation, and cultural adjustment. A third draft developed in Portuguese considering experts' suggestions was presented to children and parents in Brazil. The total adequacy score was calculated from the sum of the scores obtained in each domain, divided by the maximum total score. Descriptive analysis is presented.

RESULTS

The expert panel was composed of 11 (64.7%) physical therapists, and 6 (35.3%) psychologists. The total adequacy score (0-100%) was 87.74%. The third draft version of the comic book was presented to 28 children and the final version was presented to 16 children with a mean age of 9.6 years. Children were totally satisfied (n=4; 26.7%) or satisfied (n=9; 56.2%) with the story of the comic book. The readability of the comic book was considered suitable for grades 4 to 6 educational level.

CONCLUSION

The comic book "A Journey to Learn about Pain" was validated for face and content validity by the expert panel and the Brazilian target population. This comic book is available in Portuguese and English and can be a potentially useful resource for children.

Neurophysiological Approach by Self-Control of Your Stress-Related Autonomic Nervous System with Depression, Stress and Anxiety Patients

BACKGROUND

Heart Rate Variability Biofeedback (HRVB) is a treatment in which patients learn self-regulation of a physiological dysregulated vagal nerve function. While the therapeutic approach of HRVB is promising for a variety of disorders, it has not yet been regularly offered in a mental health treatment setting.

AIM

To provide a systematic review about the efficacy of HRV-Biofeedback in treatment of anxiety, depression, and stress related disorders.

METHOD

Systematic review in PubMed and Web of Science in 2020 with terms HRV, biofeedback, Post-Traumatic Stress Disorder (PTSD), depression, panic disorder, and anxiety disorder. Selection, critical appraisal, and description of the Random Controlled Trials (RCT) studies. Combined with recent meta-analyses.

RESULTS

The search resulted in a total of 881 studies. After critical appraisal, nine RCTs have been selected as well as two other relevant studies. The RCTs with control groups treatment as usual, muscle relaxation training and a "placebo"-biofeedback instrument revealed significant clinical efficacy and better results compared with control conditions, mostly significant. In the depression studies average reduction at the Beck Depression Inventory (BDI) scale was 64% (HRVB plus Treatment as Usual (TAU) versus 25% (control group with TAU) and 30% reduction (HRVB) at the PSQ scale versus 7% (control group with TAU). In the PTSD studies average reduction at the BDI-scale was 53% (HRV plus TAU) versus 24% (control group with TAU) and 22% (HRVB) versus 10% (TAU) with the PTSD Checklist (PCL). In other systematic reviews significant effects have been shown for HRV-Biofeedback in treatment of asthma, coronary artery disease, sleeping disorders, postpartum depression and stress and anxiety.

CONCLUSION

This systematic review shows significant improvement of the non-invasive HRVB training in stress related disorders like PTSD, depression, and panic disorder, in particular when combined with cognitive behavioral therapy or different TAU. Effects were visible after four weeks of training, but clinical practice in a longer daily self-treatment of eight weeks is more promising. More research to integrate HRVB in treatment of stress related disorders in psychiatry is warranted, as well as research focused on the neurophysiological mechanisms.

Biofeedback in pediatric populations: a systematic review and meta-analysis of treatment outcomes

Biofeedback is commonly used for both pediatric and adult patients with a myriad of diagnoses in clinical settings. The majority of previous research has focused on the use of biofeedback in adults, with only a small body of literature examining the usefulness of biofeedback in treating children. The current systematic review and meta-analysis seeks to quantitatively examine the usefulness of biofeedback in addressing pediatric conditions. A systematic review of biofeedback interventions in children was conducted using four databases (Ovid MEDLINE, EMBASE, PsycINFO, and Cochrane CENTRAL). Outcomes included changes in symptoms of associated conditions or changes in physiological functioning. Out of 3,128 identified articles, 23 studies (with 24 effect sizes) were eligible for inclusion in the meta-analysis. Using a random effects model, the overall effect of pediatric biofeedback was statistically significant with a large effect size. Despite the large effect size, general study quality was low, limiting interpretation of findings. Despite widespread clinical use of biofeedback in pediatric populations, research is still limited concerning the efficacy of biofeedback in children. While findings suggest potential positive effects of biofeedback to address pediatric conditions, high-quality studies are necessary to fully support the use of biofeedback in children.

The Co-occurrence of Pediatric Chronic Pain and Anxiety: A Theoretical Review of a Developmentally Informed Shared Vulnerability Model

The development and maintenance of pediatric chronic pain and anxiety are complex, underscoring the need to better understand the interactive forces contributing to their co-occurrence. The shared vulnerability model (SVM) was developed to explain the co-occurrence of chronic pain and posttraumatic stress disorder in adults. Although many core tenets have been well supported by pediatric research, the SVM has yet to be extended to pediatric pain populations. We propose a developmentally informed pediatric SVM for advancing our understanding of the co-occurrence of pediatric chronic pain and anxiety disorders. The proposed SVM postulates that youth at increased risk for the development of chronic pain and/or anxiety share predisposing vulnerabilities, including anxiety sensitivity, and that these shared vulnerabilities give rise to negative emotional responses (child and parent) in the context of stressful events. Consequences of fear and anxiety, including avoidance behavior, further contribute to the development of chronic pain, anxiety, and their co-occurrence. The parental, school, and peer contexts in which these problems develop and are maintained in youth are pertinent to integrate into a SVM, as pediatric chronic pain and anxiety disorders share several social-contextual risk and maintenance factors. We also highlight new areas of inquiry.

Implementing psychological therapies for gastrointestinal disorders in pediatrics

INTRODUCTION

The brain-gut axis refers to complex and reciprocal interactions that impact symptom presentation and disease course within the GI tract. Psychological therapies included in the treatment of functional gastrointestinal disorders (FGIDs) as well as chronic gut disorders including inflammatory bowel disease (IBD) address environmental and psychological factors impacting patients' symptoms and overall functioning.

AREAS COVERED

Employing a biopsychosocial approach, this review focuses on the evidence for and implementation of psychological therapies across pediatric gastrointestinal disorders.

EXPERT OPINION

By developing a working knowledge of evidence-based psychological therapies applicable to pediatric gastrointestinal disorders, clinicians have the opportunity to comprehensively treat patients' symptoms and distress. Regular communication and coordination between pediatric gastroenterology clinicians and providers of psychological therapies offers the greatest likelihood for successfully implementing psychological therapies into treatment plans.

Impact of hypnotic safety on disorders of gut-brain interaction: A pilot study

Functional gastrointestinal disorders, i.e., abdominal conditions without identifiable structural etiologies, are seen frequently in primary care and specialty practices. As subtle physiological processes have been identified as potential contributing factors to these functional disorders, these disorders have been recently relabeled, Disorders of Gut-Brain Interaction (DGBI). Moreover, some of these processes, e.g., sympathetic nervous system activity and inflammation, are being increasingly related to psychosocial factors such as situational stress and histories of trauma, abuse, and neglect. As the activity of the autonomic nervous system (ANS) has been long considered to be a contributory factor for DGBI, the present study utilized a theory-driven model based on the Polyvagal Theory to optimize ANS activity for the promotion of healthy digestive activity. Specifically, a hypnotic intervention to increase neuroception of safety was employed with three female college students diagnosed with functional dyspepsia and irritable bowel syndrome in a single-subject design. This intervention was found to be associated with increases in the experience of safe/warm positive affect and decreases in symptoms of functional dyspepsia and irritable bowel syndrome as well as depression and anxiety. The hypnotic intervention for the promotion of a sense of safety is recommended for the treatment of other functional somatic disorders as well as trauma-related conditions. Potential complications related to individuals with prolonged trauma and attachment issues also are reviewed.

Impaired Vagal Efficiency Predicts Auricular Neurostimulation Response in Adolescent Functional Abdominal Pain Disorders

INTRODUCTION

To determine whether pretreatment vagal efficiency (VE), respiratory sinus arrhythmia, and heart period can predict pain improvement with auricular neurostimulation in pediatric functional abdominal pain disorders.

METHODS

A total of 92 adolescents with functional abdominal pain disorders underwent a 4-week randomized, double-blinded, sham-controlled auricular neurostimulation trial. Electrocardiogram-derived variables at baseline were used to predict pain using mixed effects modeling.

RESULTS

A 3-way interaction (95% confidence intervals: 0.004-0.494) showed that the treatment group subjects with low baseline VE had lower pain scores at week 3. There was no substantial change in the placebo or high VE treatment group subjects. This effect was supported by a significant correlation between baseline VE and degree of pain reduction only in the treatment group.

DISCUSSION

Impaired cardiac vagal regulation measured by VE predicts pain improvement with auricular neurostimulation.

A Single Session of Heart Rate Variability Biofeedback Produced Greater Increases in Heart Rate Variability Than Autogenic Training

Heart rate variability biofeedback (HRV-BF) has been confirmed to increase heart rate variability (HRV) and cardiac outflows by baroreflex in healthy populations and clinical patients. Autogenic training (AT) is common used in the psychological intervention. This study integrates a single-session of HRV-BF and AT into a high-technology mobile application (app), and examines the effects on HRV indices, breathing rates, and subjective relaxation scores. Healthy college students were recruited and assigned to the single-session HRV-BF group or AT group. Participants in the HRV-BF group received HRV-BF combined with paced breathing training, which gradually stepped down their breathing rates from 12, to 8, to 6 breaths/per min; and received feedback of HRV indices from the app. Participants in the AT group received autogenic training and feedback of heart rate from the app. A chest belt Zephyr BioHarness was connected through Bluetooth to a Zenfone5 mobile phone, it collected the signals of interbeat intervals and breathing rates at pre-training, mid-training, and post-training stages. The Kubios HRV software was used to analyze HRV indices. The results reveal higher HRV indices and lower breathing rates during mid-training and post-training in the HRV-BF group compared to the AT group. There were higher high-frequency of HRV at post-training than pre-training in the AT group. Participants of both groups increased their subjective relaxation scores after training. The HRV-BF protocol increased cardiac outflows by baroreflex and decreased breathing rates, and the AT protocol increased high-frequency of HRV. These high-technology wearable devices combined with psychological interventions will apply to various populations in the future.

Effects of Auricular Acupressure on Women With Irritable Bowel Syndrome

The purpose of this study was to examine the effect of auricular acupressure on bowel symptoms, stress, mental health, and heart rate variability in women with irritable bowel syndrome (IBS). A quasi-experimental study design with a nonequivalent control group assessed a total sample of 56 women diagnosed with IBS according to Rome III criteria. There were 29 women in the experimental group who received auricular acupressure; 27 women were in the control group. Semen sinapis albae seeds were used to administer acupressure to four auricular points: endocrine, large intestine, lung, and Shenmen for 5 days/week for 4 weeks; the control group received no treatment. Bowel symptoms, stress, mental health, and heart rate variability were measured twice, once before and once after the intervention. Chi-square tests, t tests, and paired t tests were used for analysis. The experimental group had decreased loose stools, abdominal pain, diarrhea, abdominal discomfort, stress, and heart rate variability compared with the control group (p < .05). Auricular acupressure was effective for symptom improvement in patients with IBS.

The social brain and heart rate variability: Implications for psychotherapy

PURPOSE

Humans evolved within the mammalian line as a highly social species. Indeed, sociality has been a major driver of human social intelligence. From birth, social relationships have emotional and self-regulating properties and operate through different body systems. This paper will explore how heart rate variability (HRV), an index of the vagal regulation of the heart and a central element of the physiological underpinnings of sociality, is related to mental health problems, with important implications for psychotherapy.

METHODS

We conducted a narrative review of the literature on the bi-directional links between prosocial motivations, HRV, and psychophysiological functioning.

RESULTS

HRV is associated not only with the ability to downregulate physiological arousal, but also with a variety of psychological and behavioural variables which are usually the target of psychotherapeutic interventions. A modern neurovisceral integration model can be employed to explain the complex intercorrelation between HRV and psychophysiological functioning. In particular, the link between HRV, the experience of inter- and intrapersonal safeness, and the inhibitory function of the prefrontal cortex will be explored in the context of prosocial motives, such as compassion, that alleviate and help prevent mental health difficulties.

CONCLUSIONS

Our knowledge of the social brain and its physiological underpinnings might influence important elements of a therapeutic intervention, from the initial assessment of patient's difficulties to the evaluation of therapy outcomes.

PRACTITIONER POINTS

Social relationships have emotional and self-regulating properties. The experience of inter- and intrapersonal safeness is connected to prosocial motives, such as compassion, and the inhibitory function of the prefrontal cortex. Social relationships and compassion influence different body systems, such as the vagus nerve. Many forms of psychopathology represent the activation of evolved, defensive strategies especially in contexts where there are few stimuli indicating safeness and social support. Heart rate variability predicts psychotherapy outcome.

Traumatic stress and the autonomic brain-gut connection in development: Polyvagal Theory as an integrative framework for psychosocial and gastrointestinal pathology

A range of psychiatric disorders such as anxiety, depression, and post-traumatic stress disorder frequently co-occur with functional gastrointestinal (GI) disorders. Risk of these pathologies is particularly high in those with a history of trauma, abuse, and chronic stress. These scientific findings and rising awareness within the healthcare profession give rise to a need for an integrative framework to understand the developmental mechanisms that give rise to these observations. In this paper, we introduce a plausible explanatory framework, based on the Polyvagal Theory (Porges, Psychophysiology, 32, 301-318, 1995; Porges, International Journal of Psychophysiology, 42, 123-146, 2001; Porges, Biological Psychology, 74, 116-143, 2007), which describes how evolution impacted the structure and function of the autonomic nervous system (ANS). The Polyvagal Theory provides organizing principles for understanding the development of adaptive diversity in homeostatic, threat-response, and psychosocial functions that contribute to pathology. Using these principles, we outline possible mechanisms that promote and maintain socioemotional and GI dysfunction and review their implications for therapeutic targets.

Persistent autonomic dysfunction and bladder sensitivity in primary dysmenorrhea

Menstrual pain, also known as dysmenorrhea, is a leading risk factor for bladder pain syndrome (BPS). A better understanding of the mechanisms that predispose dysmenorrheic women to BPS is needed to develop prophylactic strategies. Abnormal autonomic regulation, a key factor implicated in BPS and chronic pain, has not been adequately characterized in women with dysmenorrhea. Thus, we examined heart rate variability (HRV) in healthy (n = 34), dysmenorrheic (n = 103), and BPS participants (n = 23) in their luteal phase across a bladder-filling task. Both dysmenorrheic and BPS participants reported increased bladder pain sensitivity when compared to controls (p’s < 0.001). Similarly, dysmenorrheic and BPS participants had increased heart rate (p’s < 0.01), increased diastolic blood pressure (p’s < 0.01), and reduced HRV (p’s < 0.05) when compared to controls. Dysmenorrheic participants also exhibited little change in heart rate between maximum bladder capacity and after micturition when compared to controls (p = 0.013). Our findings demonstrate menstrual pain’s association with abnormal autonomic activity and bladder sensitivity, even two weeks after menses. Our findings of autonomic dysfunction in both early episodic and chronic visceral pain states points to an urgent need to elucidate the development of such imbalance, perhaps beginning in adolescence.

The impact of breathing rate on the cardiac autonomic dynamics among children with cerebral palsy compared to typically developed controls

PURPOSE

To describe the immediate effect of breathing rate on heart rate (HR) and heart rate variability (HRV) in children with cerebral palsy (CP) and a control group of typically developed (TD) age and gender-matched children.

METHODS

Twenty children with CP at gross motor function classification system levels I-III and 20 TD children aged 6-11 participated in the study. HR was monitored at rest and during paced breathing with biofeedback. Respiratory measures were assessed by KoKo spirometry.

RESULTS

Children with CP have lower spirometry and HRV values at rest compared to TD children. The mean reduction of breathing rate during paced breathing among children with CP was significantly smaller. Nonetheless, while practicing paced breathing, both groups reduced their breathing rate and increased their HRV.

CONCLUSIONS

The results of the current work present the immediate effect of paced breathing on HRV parameters in CP and TD children. Further studies are needed to investigate the effect of long-term treatment focusing on paced breathing for children with CP.

The Pivotal Role of Pediatric Psychology in Chronic Pain: Opportunities for Informing and Promoting New Research and Intervention in a Shifting Healthcare Landscape

PURPOSE OF REVIEW

In the context of new efforts to formulate more comprehensive diagnostic and treatment processes for chronic pain conditions, this review aims to provide an overview of some of the most salient developments in the diagnosis and clinical treatment of pediatric chronic pain and to delineate the current and future role of clinical pediatric psychologists in these efforts.

RECENT FINDINGS

The acceptance and promotion of the multidisciplinary approach to pediatric pain management has had an especially significant impact on the field of pediatric psychology. Though chronic pain was historically conceptualized as a biomedical problem, psychology is increasingly viewed as a routine, integral, and component part of treatment. With this evolving biopsychosocial paradigm, pediatric psychology is poised to help shape the development of this field, contributing to emerging conceptual and diagnostic frameworks via consultation, research, clinical care, and education. This review discusses the role of pediatric psychologists as collaborators in emerging diagnostic and assessment frameworks, leaders in pain-related research, drivers of clinical care, and educators for providers, patients, and the lay public. With increased opportunities to enhance the conceptualization and treatment of pediatric pain, pediatric psychologists have an important role to play in reducing the prevalence and persistence of pediatric pain.

Behavioural medicine and gastrointestinal disorders: the promise of positive psychology

Psychosocial risk factors linked to brain-gut dysregulation are prevalent across the spectrum of gastrointestinal disorders and are associated with poor patient outcomes. Robust and reproducible data in the areas of behavioural intervention science and the brain-gut axis have led to major advances in patient care, including the routine use of brain-gut psychotherapies to manage digestive symptoms and optimize coping. The logical next step for the emerging field of psychogastroenterology is to develop a scientific framework that enables the identification of those individual characteristics and coping styles that buffer patients against the negative psychological effects of chronic gastrointestinal disorders. A shift towards a strength-based, positive psychological science of gastrointestinal disorders could facilitate the integration of early, effective psychological care into gastroenterology practice. In this Perspective, I discuss the potential role of three human strengths with relevance to gastrointestinal health - resilience, optimism and self-regulation - and how these three constructs can be cultivated through existing or emerging brain-gut psychotherapies.

Pediatric irritable bowel syndrome and other functional abdominal pain disorders: an update of non-pharmacological treatments

Functional abdominal pain disorders, including irritable bowel syndrome, are common in children and treatment can often be difficult. Pharmacological therapies and complementary treatments are widely used, despite the limited data in pediatrics. Areas covered: This review provides an overview of the available data for the use of diet, probiotics, percutaneous electrical nerve stimulation, and psychosocial interventions, including hypnotherapy, yoga, cognitive and behavioral therapy, and mind-body interventions for the treatment of functional abdominal pain disorders in children. The literature review included a PubMed search by each therapy, children, abdominal pain, and irritable bowel syndrome. Relevant articles to this review are discussed. Expert commentary: The decision on the use of pharmacological and complementary therapies should be based on clinical findings, evidence, availability, and in-depth discussion with the patient and family. The physician should provide education on the different interventions and their role on the treatment in an empathetic and warm manner providing ample time for the family to ask questions.

Artifact Rejection Methodology Enables Continuous, Noninvasive Measurement of Gastric Myoelectric Activity in Ambulatory Subjects

The increasing prevalence of functional and motility gastrointestinal (GI) disorders is at odds with bottlenecks in their diagnosis, treatment, and follow-up. Lack of noninvasive approaches means that only specialized centers can perform objective assessment procedures. Abnormal GI muscular activity, which is coordinated by electrical slow-waves, may play a key role in symptoms. As such, the electrogastrogram (EGG), a noninvasive means to continuously monitor gastric electrical activity, can be used to inform diagnoses over broader populations. However, it is seldom used due to technical issues: inconsistent results from single-channel measurements and signal artifacts that make interpretation difficult and limit prolonged monitoring. Here, we overcome these limitations with a wearable multi-channel system and artifact removal signal processing methods. Our approach yields an increase of 0.56 in the mean correlation coefficient between EGG and the clinical "gold standard", gastric manometry, across 11 subjects (p < 0.001). We also demonstrate this system's usage for ambulatory monitoring, which reveals myoelectric dynamics in response to meals akin to gastric emptying patterns and circadian-related oscillations. Our approach is noninvasive, easy to administer, and has promise to widen the scope of populations with GI disorders for which clinicians can screen patients, diagnose disorders, and refine treatments objectively.

Mind-Body Interventions for Pediatric Inflammatory Bowel Disease

Pediatric inflammatory bowel disease is an autoimmune disease that causes chronic inflammation of the gastrointestinal mucosa. There is emerging evidence that the brain–gut connection affects inflammatory bowel disease (IBD) patients more than previously thought. This is evidenced by comorbid mood disorders, irritable bowel symptoms concurrent with quiescent IBD, and the potential of psychosocial stressors to trigger IBD flares. Mind–body interventions such as psychotherapy, relaxation, mindfulness, biofeedback, yoga, and clinical hypnosis offer an adjunct to standard medical treatment for IBD. We will review the current evidence base for these mind–body interventions in the treatment of pediatric IBD, illustrate a case study, and offer suggestions for future research for this promising field.

No More Pain in the Gut: Lifestyle Medicine Approach to Irritable Bowel Syndrome

Irritable bowel syndrome has often underestimated negative impact of quality of life. Traditional symptomatic treatment does not address underlying complex etiology. Superior results might be achieved with combination of lifestyle medicine, correction of underlying microbial imbalances and retraining of autonomic nervous system as demonstrated in this case presentation.

Evidence-Based Psychological Interventions for the Management of Pediatric Chronic Pain: New Directions in Research and Clinical Practice

Over the past 20 years our knowledge about evidence-based psychological interventions for pediatric chronic pain has dramatically increased. Overall, the evidence in support of psychological interventions for pediatric chronic pain is strong, demonstrating positive psychological and behavioral effects for a variety of children with a range of pain conditions. However, wide scale access to effective psychologically-based pain management treatments remains a challenge for many children who suffer with pain. Increasing access to care and reducing persistent biomedical biases that inhibit attainment of psychological services are a central focus of current pain treatment interventions. Additionally, as the number of evidence-based treatments increase, tailoring treatments to a child or family’s particular needs is increasingly possible. This article will (1) discuss the theoretical frameworks as well as the specific psychological skills and strategies that currently hold promise as effective agents of change; (2) review and summarize trends in the development of well-researched outpatient interventions over the past ten years; and (3) discuss future directions for intervention research on pediatric chronic pain.

Biofeedback

Although evidence supports the efficacy of biofeedback for treating a number of disorders and for enhancing performance, significant barriers block both needed research and payer support for this method. Biofeedback has demonstrated effects in changing psychophysiological substrates of various emotional, physical, and psychosomatic problems, but payers are reluctant to reimburse for biofeedback services. A considerable amount of biofeedback research is in the form of relatively small well-controlled trials (Phase II trials). This article argues for greater payer support and research support for larger trials in the “real life” clinical environment (Phase III trials) and meta-analytic reviews.