Pediatric Pain Research Articles

Rare Cause of Pediatric Abdominal Pain Diagnosed on Point of Care Ultrasound (POCUS)

An 11-year-old postmenarchal female presented to the pediatric emergency department (ED) with 2 days of periumbilical and right lower abdominal pain. Radiology-performed ultrasound (RADUS) did not visualize the appendix, and there was a plan for surgical consultation to decide between serial abdominal exams versus computed tomography (CT) scan. While awaiting consultation and to help further narrow the differential diagnosis, the emergency provider performed a point of care ultrasound (POCUS) of the urinary tract. This revealed several anomalies including a solitary left kidney with hydronephrosis, and a well-circumscribed, fluid-filled structure with mixed echogenicity posterior to the bladder and inferior to the uterus. Given these findings on POCUS, further imaging was pursued, including a RADUS of the pelvis followed by a magnetic resonance imaging (MRI) of the abdomen. Further imaging ultimately diagnosed a bicornuate uterus, septate vagina with hematocolpos and solitary left kidney consistent with Obstructed Hemivagina and Ipsilateral Renal Anomaly (OHVIRA) syndrome. This case is an illustration of how POCUS is an invaluable tool to narrow the differential diagnosis and guide advanced imaging or consultation for both common and rare causes of pediatric abdominal pain.

Pain-Associated Diagnoses in Childhood Before the Diagnosis of Attention-Deficit/Hyperactivity Disorder: A Population-Based Study

Background: Pediatric pain significantly affects children’s lives, leading to school absenteeism, impaired social interactions, and psychological distress. The perception of sensory signals as pain is influenced by the brain’s noradrenergic system, and recent evidence suggests that chronic pain may impact cognitive functioning and emotional regulation. Attention-Deficit/Hyperactivity Disorder (ADHD) is associated with alterations in the dopaminergic/noradrenergic systems, which could affect pain perception. Pain-associated conditions and frequent analgesic use in childhood may be linked to ADHD development and could serve as early indicators, yet data on this potential association remain limited. Study Aim: This population-based case-control study in Israel aimed to assess the prevalence of pain-related diagnoses prior to ADHD diagnosis in children aged 5 to 18. The study included children registered with Leumit Health Services (LHS) between 1 January 2006, and 30 June 2021. Children diagnosed with ADHD were compared to matched controls, selected based on age, gender, socioeconomic status, and other sociodemographic factors, who were never diagnosed with ADHD during the study period. Results: Children with ADHD (N = 18,756) and controls (N = 37,512) were precisely matched for sociodemographic characteristics. Individuals with ADHD exhibited significantly higher frequencies of diverse pain conditions, including those associated with illness [headache, earaches, and throat pain (odds ratios [OR] = 1.156 [95%CI 1.085, 1.232], 1.295 [95%CI 1.217, 1.377], and 1.080 [95%CI 1.019, 1.145], respectively; p < 0.01)] and injury [sprains and strains (OR = 1.233 [95% CI 1.104,1.376)]. Analgesics were more frequently purchased by individuals with ADHD, particularly paracetamol (OR = 1.194 [95%CI 1.152, 1.237], p < 0.001) and ibuprofen (OR = 1.366 [95%CI 1.318, 1.416], p = 0.001). Conclusions: This study highlights a potential connection between ADHD and pediatric pain. The elevated rates of pain diagnoses and analgesic usage among children with ADHD underscore the need for further research.

Multidetector computed tomography in the evaluation of pediatric acute abdominal pain in the emergency department

Multidetector computed tomography in the evaluation of pediatric acute abdominal pain in the emergency department

A Systematic Review and Meta-Analysis of Conditioned Pain Modulation in Children and Young People with Chronic Pain

Background/Objectives: Conditioned pain modulation (CPM) is a psychophysical experimental measure of the endogenous pain inhibitory pathway in humans, wherein one pain stimulus (the conditioning stimulus) is used to inhibit an individual’s perception of a second painful (test) stimulus. Research provides evidence of impaired endogenous inhibitory pain responses in adults with chronic pain. CPM is now increasingly applied in paediatric research and clinical practice. The primary aim of this systematic review was to examine the efficacy of CPM in paediatric chronic pain populations (6–24-year-olds) compared to pain-free children and young people (CYP). Methods: The protocol was registered on PROSPERO (CRD42020221927). A systematic search of seven databases was conducted from database inception to 20th June 2024. Study inclusion criteria were as follows: (i) recruited a sample of CYP aged 6 to 24 (inclusive) with chronic pain or who were pain-free; and (ii) applied a CPM paradigm comprising both a painful test and conditioning stimuli that were sufficiently detailed to allow for replication,(iii) adhered to a study design of randomised control trial, case control or cohort study, including cross-sectional or longitudinal; (iv) available in the English language. Study exclusion criteria were: (i) The CPM paradigm used a non-painful test or conditioning stimulus only; and (ii) was only available as an abstract, letter, poster, editorial, case report, or review with or without meta-analyses. Risk of bias was assessed using the Appraisal Tool for Cross Sectional Studies (AXIS). Meta-analyses were conducted in Comprehensive Meta Analysis 3.0 using random effects models to compare the overall CPM responses in CYP with chronic pain conditions to healthy control CYP. Results: Thirty-two studies were eligible for inclusion, six of which were included in one or more meta-analysis (n = 407 chronic pain, n = 205 control). Meta-analysis revealed significantly weaker CPM responses in CYP with a variety of chronic pain conditions compared to healthy controls (standardized mean difference (SMD) = 0.352), and significantly weaker CPM responses in CYP with abdominal pain conditions compared to healthy controls (SMD = 0.685). No significant difference in CPM response was found between CYP with migraine and healthy controls (SMD = −0.201). Conclusions: Variable results were found across individual studies, and the meta-analysis of the small number of eligible studies provides tentative evidence for impaired CPM in CYP with chronic pain compared to healthy controls. Further research is clearly needed. In particular, studies should present CPM results separately for different age groups, ethnic groups, and sexes, as these variables shape clinical pain responses.

Approaches to Pediatric Chest Pain: A Narrative Review

Chest pain in children and adolescents is a common reason for emergency department visits and referrals to pediatric cardiologists, often driven by parental concern about potential cardiac causes. However, the vast majority of pediatric chest pain cases are benign and non-cardiac in origin. This narrative review examines the etiology, evaluation, and management of pediatric chest pain, emphasizing the importance of a thorough clinical history and physical examination in distinguishing between benign and serious conditions. This review also explores the role of diagnostic tests such as electrocardiograms, chest radiography, and echocardiography, highlighting the need to balance the avoidance of unnecessary tests with the imperative to rule out life-threatening cardiac conditions. Despite the low prevalence of cardiac causes, the variability in diagnostic approaches underscores the need for standardized evaluation algorithms. These could streamline care, reduce unnecessary resource utilization, and minimize anxiety for both patients and their families. Future studies should focus on assessing the effectiveness of such algorithms in improving clinical outcomes and resource management. The findings underscore the importance of a careful, evidence-based approach to the management of pediatric chest pain.

An Unexpected Finding in an Adolescent Rowing Athlete With Angina Pectoris. A Case Report.

Significant intraventricular gradient development during exercise is rare, usually occurring with left ventricular hypertrophy. The etiopathogenesis consists of the increase in nonobstructive physiological gradients; ventricular cavitary obliteration with consequent end-systolic obstruction; and midsystolic obstruction caused by systolic anterior movement of the mitral valve compromising flow. A correlation between intraventricular gradient development and various symptoms has been established. Chest pain is common in children and is a frequent reason for referral to pediatric cardiologists. Despite the benign nature of most pediatric chest pain, extensive and costly cardiac evaluation is common in these patients. In the case presented here, we describe an adolescent rowing athlete with excruciating effort angina only during upright exercise, which was replicated while performing an exercise stress echocardiography.

Pediatric Neural Changes to Physical and Emotional Pain After Intensive Interdisciplinary Pain Treatment: A Pilot Study.

Brain areas activated during pain can contribute to enhancing or reducing the pain experience, showing a potential connection between chronic pain and the neural response to pain in adolescents and youth. This study examined changes in brain activation associated with experiencing physical pain and observing physical and emotional pain in others by using functional magnetic resonance imaging (fMRI) before and after intensive interdisciplinary pain treatment (IIPT). Eighteen youths (age 14 to 18) with widespread chronic pain completed fMRI testing before and after IIPT to assess changes in brain activation in response to physical and emotional pain. Broadly, brain activation changes were observed in frontal, somatosensory, and limbic regions. These changes may suggest improvements in descending pain modulation via thalamus and caudate, and the different pattern of brain activation after treatment suggests potentially better discrimination between physical and emotional pain. Brain activation changes were also correlated with improvements in clinical outcomes of catastrophizing (reduced activation in right caudate, right mid-cingulate, and postcentral gyrus) and pain-related disability (increased activation in precentral gyrus, left hippocampus, right middle occipital cortex, and left superior frontal gyrus). These changes could indicate that reduced brain protective responses to pain were associated with treatment-related improvements. This pilot study highlights the need for larger trials designed to better understand the brain mechanisms involved in pediatric widespread pain treatment.

Helping Educators Learn Pediatric Pain Assessment and Intervention Needs Program (HELP PAIN): Program Development with Community Partners

Background/Objectives: This paper details the development of the Helping Educators Learn Pediatric Pain Assessment and Intervention Needs (HELP PAIN) program. Methods: HELP PAIN is an 8 h live training program for school providers (e.g., school nurses and social workers) to use evidence-based nonpharmacologic pediatric pain management tools. The program’s scope reflected the reach of the participating intermediary community organizations, resulting in focused training in rural northwest Michigan due to the Health Department of Northwest Michigan’s service in that region and statewide reach due to the broad representation of members from the Michigan Association of School Nurses. Results: We describe the development of the HELP PAIN program, drawing on evidence-based nonpharmacologic (e.g., cognitive behavioral and mindfulness meditation) strategies for pediatric pain management. Conclusions: In partnership with the key community organizations and community partners, we developed, interactively refined, and delivered this training program.

Paracetamol and ibuprofen fixed-dose combination for the management of acute mild-to-moderate pain in children: strengthening and enhancing of result of Nominal Group Technique through Delphi consensus

BackgroundParacetamol and ibuprofen are the most commonly used drugs for pain treatment in children and their combination has shown improved analgesic effect compared to treatment with either drug alone. Current literature lacks specific guidelines regarding the settings in which this combination should be adopted.MethodsThe survey, conducted with Delphi methodology, involved 75 hospital and outpatient pediatricians with clinical experience in the management of pain in children. Pediatricians involved were asked to validate or not the results of the previous NominalGroup Tecnique (NGT) consensus and thus specify the optimal clinical settings in which the paracetamol/ibuprofen fixed-dose combination could be adopted.ResultsThe results confirm the importance of the fixed-dose paracetamol and ibuprofen combination for the control of mild-to-moderate acute pain in children. Particularly, this association seems to be appropriate in case of headache, earache, odontalgia and musculoskeletal pain, and in specific settings such as post-operative and post-procedural pain. The broadening of the panel brought to slight variations in clinical management practices between hospital and outpatient specialists. Nonetheless, overall consensus supports the notion that the fixed dose combination is more efficacious than monotherapies and it is well tolerated. Moreover, experts unanimously agree on the usefulness of the combination for caregivers, leading to improved adherence and effectiveness.ConclusionsBoth the NGT consensus and the broader Delphi consensus confirm the usefulness of the paracetamol-ibuprofen fixed-dose combination in pediatric pain. This is attributed to its superior effectiveness compared to monotherapies, a good tolerability profile, and improved compliance and ease of use. Some pain settings related to chronic, inflammatory and rheumatological pathologies remain to be investigated to evaluate the use of this combination.

Exploring Pain Adaptation in Youth With Juvenile Idiopathic Arthritis: Identifying Youth and Parent Resilience Resources and Mechanisms.

Although juvenile idiopathic arthritis (JIA) is often associated with pain, this experience does not necessitate negative outcomes (eg, depression, functional impairment). Little research has explored youth and parent resilience resources (ie, stable traits) and mechanisms (ie, dynamic processes) in this context, and studies have focused on their contributions independently rather than collectively. This study, informed by the Ecological Resilience-Risk Model in Pediatric Chronic Pain, sought to (1) explore the relationships among youth and parent resilience resources and mechanisms and (2) identify the relative importance (RI; ie, independent contributions when entered simultaneously) of evidence-based youth and parent resources and mechanisms in contributing to youth-reported recovery, sustainability, and growth outcomes. Youth (13-18 years) with JIA and their parents (156 dyads) completed a battery of online questionnaires assessing resilience resources (optimism, resilience), mechanisms (psychological flexibility, pain acceptance, self-efficacy), recovery and sustainability (pain intensity, functional disability, health-related quality of life), and growth (benefit finding) outcomes. Analyses demonstrated significant positive correlations across within-person resources and mechanisms and weaker correlations across within-dyad resources and mechanisms. Although the RI of predictors varied by outcome, youth pain acceptance was the most robust predictor across models (RI = 0.03-0.15). Some predictors (eg, parent psychological flexibility and pain acceptance) were generally categorized as "Not Important," whereas others (eg, youth resilience) had "Inconclusive" results, suggesting construct overlap. Although additional research is needed to further understand resilience, results highlight the importance of fostering pain acceptance in youth and incorporating parents in psychosocial interventions to optimize living with JIA.

Music Therapy for Pain and Anxiety Reduction in Pediatric Patients Undergoing Procedures: A Systematic Review and Meta-Analysis Protocol

Introduction: Many children undergo invasive and noninvasive procedures in the pediatric medical setting, which can be associated with pain and anxiety. Both pharmacological and nonpharmacological interventions are currently being used to minimize pain and anxiety in pediatric patients in the medical setting. Music therapy is an evidence-based, cost-effective, and nonpharmacological service administered by a board-certified music therapist which may reduce pediatric pain and anxiety during procedures. We will undertake a systematic review and meta-analysis that will comprehensively analyze the quantitative publications that detail the effects of music therapy on pediatric pain and anxiety for patients undergoing invasive or noninvasive medical procedures. Method: This protocol is reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) statement and is registered in the International Prospective Register of Systematic Reviews (Prospero; CRD42023474635 ). A three-step, iterative search strategy will include (1) an initial scoping search, (2) development and execution of a comprehensive search strategy, and (3) a search for additional publications. Procedures for disagreements among reviewers and the article screening process are outlined. Statistical analyses including analysis of outcomes and sensitivity analysis has been determined. A plan for critical appraisal of sources using the Grading Recommendations Assessment, Development, and Evaluation (GRADE) and quality of evidence using the Outcome Reporting Bias in Trials (ORBIT) of evidence is also present in this protocol. Conclusion: This protocol is presented with the intention to execute and publish results of this systematic review and meta-analysis to help inform clinical practice and future research.

03 Best practice for transition from paediatric complex pain care: A scoping review

Abstract Background Many adolescent and young adults (AYA) experiencing chronic pain often continue to have pain in adulthood and thus must make the transition from paediatric care to adult care. Persistent pain and disability due to chronic pain throughout young adulthood can disrupt the attainment of important developmental milestones at transition to adulthood that impact quality of life. Inadequate transition planning may be associated with poor health outcomes and increased health utilization. However, only few studies have described the specific transition protocol from paediatric to adult care that AYA with chronic pain must make. Objectives To improve understanding of transitional care needs during transition planning and after transition (quality of care), this paper will determine known barriers to successful transition from paediatric chronic pain care to adult care as well as factors associated with successful transition from paediatric multidisciplinary paediatric chronic pain care, identify patient care needs at transition from paediatric chronic pain care, and finally describe the best practice (existing frameworks) to support youth at transition from paediatric chronic pain care. Design/Methods This scoping review used previously published Arksey and O’Malley framework and followed the PRISMA guidelines. It sought to answer the following questions. What are the barriers to successful transition and what factors are associated with successful transition from paediatric chronic pain care to adult care? What are patient care needs at transition from paediatric chronic pain care? How can we best support youth at transition from interdisciplinary paediatric chronic pain care? A literature search was carried on Ovid Medline and 12 studies (11 research articles and 1 dissertation) published from 2015 to 2022 were included in the review, with only one theoretical transition framework that may be useful in the Canadian healthcare setting. Results In this scoping review, interpersonal, organizational, and systemic barriers and enablers for successful transition were identified. The most frequently identified barriers to successful transition include lack of self-efficacy, trust, communication, coordination of care between paediatric and adult care. A need of early transition, an individualized approach, fluid and dynamic transition process, and age-appropriate resources were identified as primary patient care needs during transition. Four frameworks supporting transitional care for AYA with chronic health conditions were identified. Conclusion Limited evidence suggests that there is lack of standardized transition protocol for clinical use. There is an urgent need for an evidence-based transition tools for clinical use for AYA with chronic pain.

54 Efficacy of a quality improvement project in paediatric procedural pain management during needle procedures

Abstract Background In paediatric hospital settings, needle procedures significantly contribute to children’s experiences of pain and distress. A structured approach integrating preparation, comfort positions, distraction, relaxation techniques, and topical anesthetics can enhance children’s ability to cope with procedural discomfort. We developed a quality improvement (QI) initiative aiming to alleviate procedural pain and distress through a staggered implementation approach over a 3-year period. Objectives This study aimed to evaluate the impact of the first 2 years of an institutional QI initiative on managing procedural pain and distress in children undergoing needle procedures. The primary objective was to evaluate the use of multimodal strategies to reduce needle-related procedural pain/distress following the QI initiative. The secondary objective was to compare pain scores for needle procedures before and after the QI initiative. Design/Methods This observational study was conducted in a tertiary care university-affiliated paediatric hospital with an ongoing hospital-wide QI initiative aiming to alleviate procedural pain and distress in children undergoing needle procedures. The QI initiative consisted of mandatory sector-by-sector training of healthcare providers (HCP) on procedural pain/distress strategies to increase the use of multimodal pain care. Pain scores were measured during needle procedures (i.e. Numerical Rating Scale (NRS), Faces Pain Scale-R (FPS-R) or the FLACC scales, according to patient age) pre and 3-6 months post implementation of the QI initiative. Scheduled audits were conducted using a standardized questionnaire by a deployment champion nurse during needle procedures to document pain scales and pain/distress strategies used by the HCP during needle procedures in each of the hospital services. Results Throughout the first two implementation years (June 2021-June 2023), 363 audits were conducted on needle procedures for 363 children (Median age 7 yo (0month-18yo□). At this stage, audits took place in 14 different hospital services. The most frequent procedures were IV-line insertions (34%), venous blood draws (27%), and capillary blood sampling (26%). Parental presence and the use of distraction techniques were frequently used (90% and 80% of procedures, respectively). Of the 363 audits, 221 were pre-implementation and 142 post-implementation. Post QI initiative, an increased number of procedures were realized using multimodal strategies (4 or more strategies) to reduce pain/distress (from 60% to 78%). Pain scores were recorded for 203/221 audits pre and 134/142 post with a reduction in severe pain scores (7 or more) from 25% pre to 5% post-implementation. Conclusion The institutional QI initiative demonstrated both an increase in the number of strategies used to prevent pain/distress and a reduction in severe pain scores associated with paediatric needle procedures. This project emphasizes the significance of employing a multifaceted approach to managing procedural pain/distress in children undergoing needle procedures.

Navigating the nexus of personalized medicine and healthcare management: Advancing paediatric pain management modalities in sickle cell disease through thematic analysis for ages 1–12

ABSTRACT Sickle cell disease (SCD) affects millions of people and is a significant public health concern due to the severe pain crises it causes, often requiring emergency care and leading to hospitalization. Effective pain management strategies are crucial to improving the quality of life of children with SCD, particularly those aged 1 to 12 years, who are especially vulnerable. This study evaluates the effectiveness and suitability of various healthcare management strategies, with a specific focus on pain management modalities for this paediatric population. Through a thematic analysis of 36 articles from major healthcare databases, five key themes were identified: cognitive behavioral therapy (CBT) and complementary alternative medicine (CAM), digital and technological pain management methods, pain medications, individualized pain plans and enhancement strategies aimed at improving protocols. The findings highlight critical opportunities to advance pain management approaches and address current care gaps. The study underscores the importance of integrating parents and caregivers into the care process and addressing health inequalities that affect treatment outcomes. Evidence reveals that existing research on paediatric SCD pain management remains inadequate, and future studies are urgently needed to establish clear guidelines that improve treatment efficacy and translate into actionable evidence-based practices for this vulnerable population.

Statistical analysis plan for the Petal trial: the effects of parental touch on relieving acute procedural pain in neonates

Background Infants undergo multiple clinically-required painful procedures during their time in hospital, and there is an increasing desire from both parents and clinical staff to have parents directly involved in their newborn’s pain relief. To avoid biases due to selective analysis and reporting, a clinical trial’s statistical analysis plan (SAP) should be finalised and registered prior to dataset lock and unblinding. Here, we outline the SAP for the Petal trial, which was registered on the ISRCTN registry prior to dataset lock and unblinding. Methods The Petal trial is a multicentre, individually randomised, parallel-group interventional superiority trial. The study involves in-patient neonates born at or after 35+0 weeks gestation with a postnatal age of ≤7 days, in two hospital research sites (John Radcliffe Hospital, Oxford, UK; Royal Devon and Exeter Hospital, Exeter, UK). The primary objective is to investigate the potential efficacy of a non-pharmacological parent-led stroking intervention on reducing the magnitude of neonates’ noxious stimulus-evoked brain activity. The primary outcome is the neonate’s brain activity recorded using electroencephalography (EEG) in response to a heel lance blood sampling procedure. Secondary outcomes include neonatal clinical pain scores and tachycardia, and parental anxiety. The study hypothesis is neonates’ pain responses and parents’ anxiety scores are lower in the intervention group. Randomisation will be via a minimisation algorithm to maintain balance in five prognostic factors. Conclusions Paediatric pain trials have been highlighted by regulatory bodies as an important and challenging topic, with interest increasing in brain imaging outcomes. The Petal trial, to which this SAP relates, is part of a larger effort of establishing a brain-based EEG outcome measure of infant pain for use in clinical trials. This SAP is thus likely to be of interest to those in academia, pharmaceutical companies, and regulatory bodies. Trial registration ClinicalTrials.gov: NCT04901611, 25/05/2021; ISRCTN: ISRCTN14135962, 23/08/2021).

Pediatric pain physician workforce: an assessment of supply and demand.

Many youth with pain lack access to pediatric pain expertise. There is a critical shortage of pediatric pain physicians, due partly to a paucity of training programs in Pediatric Pain Medicine. Pain fellowships are Anesthesiology-based and there is no pathway to fellowship training or Pain Medicine board certification for pediatricians. This workforce assessment sought to examine the current state of Pediatric Pain Medicine in the United States and future interest in pursuing Pain Medicine among pediatricians. A multidisciplinary working group of Pain Medicine clinicians designed three surveys to examine pediatric comprehensive pain programs in the US, practice patterns of pediatricians and their motivations and opinions regarding Pain Medicine board certification, and current residents' exposure to and interest in Pediatric Pain Medicine. Wait times for initial evaluations are two months or longer for two-thirds of responding centers, and barriers to increase staff size and resources were reported, including an inadequate number of trained or available physicians. Pediatricians expressed interest in earning board certification in Pain Medicine, given the opportunity. Additionally, there is interest among pediatric residents in pursuing Pediatric Pain Medicine, and qualitative data highlight information residents perceived needing in order to pursue a career in the field. Results demonstrate the need for increased training opportunities in pediatric pain medicine. A formal pathway to Pain Medicine for Pediatricians should be developed to increase the potential workforce and to address the lack of trained pediatric pain specialists, thereby improving access to care for youth with pain.

Establishing consensus on biopsychosocial factors associated with pediatric chronic pain: A modified Delphi study

A variety of factors are associated with the development and maintenance of chronic pain in children. Identifying modifiable factors associated with pediatric chronic pain is important to use them as target outcomes in the development and evaluation of interventions for the prevention and management of chronic pain. This study aimed to reach expert consensus on factors associated with pediatric chronic pain and their modifiability and population-level effect. Pediatric pain experts were questioned using a web-based two-round modified Delphi method. Two rounds of questions with Likert scaling were used to identify influencing factors (Round 1) and to reach consensus on each factor (Round 2) in terms of: 1) strength of association with chronic pain in children; 2) modifiability; and 3) population-level effect. An inductive approach was used to derive categories (ranging from ‘very low’ to ‘very high’) and subcategories (ranging from ‘low’ to ‘high’). In total, 48 experts from 14 different countries completed Round 1, and 31 completed Round 2. A list of 47 factors was considered to be associated with pediatric chronic pain. Four factors (physical activity (PA), sedentary behavior (SB), pain-related school absence, and pain concept/knowledge of the child) were considered highly modifiable and three factors having a high population-level effect (PA, SB, and the child’s depressive or negative emotional feelings). Expert consensus was established about modifiable and population-level factors associated with pediatric chronic pain through this web-based modified Delphi study, guiding target outcomes for its prevention and management. PerspectiveThis article presents the results of a modified Delphi study with pediatric pain experts to gain consensus on factors associated with pediatric chronic pain. Relationship strength, modifiability, and population-level effect of associated factors were rated to identify areas of research priority and interventions aiming to reduce the development and maintenance of chronic pain in children.

"Voiceless Pain"-Assessment of Pain in Patients with Obstetric Brachial Plexus Injuries: A Retrospective, Single Center Analysis.

Obstetric brachial plexus injuries (OBPIs) not only lead to severe and life changing sequelae regarding motor impairment but can also be responsible for multi-characteristic pain. In everyday routine, questions regarding pain of the developing child with an OBPI are often overseen and neglected. We aimed to elucidate this specific question and analyzed all patients with OBPI treated in our center to unmask initially non-observed pain and ultimately put pain in correlation to the surgical reconstructive treatment performed. This single center retrospective study analyzes patients with OBPI treated in our center over the past 20 years. Patients were surveyed by the adolescent pediatric pain tool assessment to evaluate pain over their entire life span by excluding potential postoperative pain episodes. A total of 95 patients were initially contacted of which 78 returned the questionnaire (53.8% female, 46.2% male). In our patient cohort, the vast majority constituting 84.6 percent did not experience pain in the affected upper extremity over the years up to the date of their examination. Most of the patients describing pain had not been microsurgically treated for brachial plexus reconstruction in their neonate period. Merely, 33.3 percent of all OBPI experiencing pain had been microsurgically reconstructed at a median age of 7 months. Pain interrogation in patients with OBPI is often overseen during daily clinical routine. Adequate age-appropriate analgesic therapy regimens adapted to the individual are highly recommended. Timely microsurgical brachial plexus reconstruction may result in reduced lifetime pain experiences.

Evaluation of the effect of CYP2D6 and OCT1 polymorphisms on the pharmacokinetics of tramadol: Implications for clinical safety and dose rationale in paediatric chronic pain.

Our investigation aimed to assess the dose rationale of tramadol in paediatric patients considering the effect of CYP2D6/OCT1 polymorphisms on systemic exposure. Recommendations were made for the oral dose of tramadol to be used in a prospective study in children (3months to < 18 years old) with chronic pain. Intravenous pharmacokinetic and genotype data from neonatal patients (n = 46) were available for this analysis. The time course of tramadol and O-desmethyltramadol (M1) concentrations was characterized using a nonlinear mixed effects approach in conjunction with extrapolation principles. Clinical trial simulations were then implemented to explore the effects of polymorphism, maturation and developmental growth on the disposition of tramadol and M1. Reported efficacious exposure range in adult subjects were used as reference. The pharmacokinetics of tramadol and M1 was characterized by a two-compartment model. The total clearance of tramadol (CLPP) comprised CYP2D6-mediated metabolism (CLPM) and other pathways (CLPO). Age-related changes in CLPM, CLPO and M1 clearance (CLMO) were described by a sigmoid function, with CYP2D6 as a covariate on CLPP and CLPM, and OCT1 on CLMO. Simulation scenarios includingdifferent CYP2D6/OCT1 combinations revealed that steady-state concentrations are above the putative ranges for analgesia in >15% and >70% of subjects after doses of 3 and 8mg/kg, respectively. In the absence of genotyping, reference exposure ranges can be used to define the dose rationale for tramadol in paediatric chronic pain. However, a starting dose of 0.5mg/kg/day should be considered, followed by stepwise titration to the desired analgesic response.

The Impact of a Brief Educational Seminar on Pediatric Pain-focused Cognitive-Behavioral Therapy for School Providers.

Pediatric chronic pain is common and can be detrimental to children's social, emotional, and school functioning. Nonpharmacological approaches to chronic pain, like cognitive- behavioral therapy (CBT), can be effective. Schools could provide children with chronic pain access to these interventions. However, school professionals (ie, nurses and mental health providers) are seldom trained in CBT, creating a barrier to accessing such help. A seminar was created to introduce CBT strategies for chronic pediatric pain to school professionals. Feasibility, acceptability, and self-reported knowledge gained from the seminar were examined. Two introductory seminars (~2.5 h each) were held separately for the Michigan Association of School Nurses and the health department of Northwest Michigan (n = 71 total). The seminar provided an understanding of pain and pain-focused CBT strategies (eg, activity pacing, positive self-statements, and psychoeducation). Fifty-two school nurses, 16 mental health professionals, and 3 participants (unidentified title) rated program acceptability and self-reported knowledge of CBT before and after training (1 = strongly disagree, 5 = strongly agree). Of the respondents, 89.6% agreed the training was helpful, and 87.5% were interested in additional training. For all questions relating to knowledge of CBT, a mixed-model interaction showed a meaningful, increase of at least 1 point (on a 5-point Likert Scale), F(2, 69.83) = 3.93, P = 0.024. This study underscores the feasibility and acceptability of training school health providers in CBT for pediatric chronic pain. This project also established key partnerships in Michigan to expand future work in this realm with more comprehensive training and assessment of outcomes.