Children's memory for pain: overview and implications for practice

Procedural pain in children: a qualitative study of caregiver experiences and information needs

BACKGROUND

Children experience multiple painful procedures when being cared for in emergency departments (EDs). Unfortunately, evidence-based interventions to manage such pain and distress are under-utilized across EDs. Caregivers are uniquely positioned and invested to advocate for the adaptation of such evidence into practice. Our objective was to gather information from caregivers of children experiencing procedural pain in the ED to inform the development of a novel, caregiver-focused knowledge translation (KT) tool.

METHODS

The study design was qualitative description. Caregivers of children who underwent intravenous (IV) insertion or venipuncture in the pediatric ED at an urban tertiary care centre were interviewed. Thematic analysis was applied to the data. The TRanslating Emergency Knowledge for Kids (TREKK) Parent Advisory Group continuously informed this study, and provided input on interview guide development and piloting, data collection, analysis of the data, interpretation of the results, and development of next steps.

RESULTS

Interviews revealed four major themes: 1) source of healthcare information; 2) delivering healthcare information; 3) communication with caregivers; and 4) procedure-related anxiety and long-term effects. Caregivers most valued receiving information directly from their healthcare provider. They also expressed that healthcare providers should direct information about the procedure to their child and identified strategies to involve children in their care. Caregivers wanted to be empowered to ask informed questions of their healthcare providers. Finally, caregivers reported negative experiences with procedures for their children, occurring mainly at non-pediatric centres.

CONCLUSIONS

We have identified core information needs for caregivers whose children are experiencing IV insertion or venipuncture. These results will form the foundation for the development of a KT tool that may empower caregivers to actively participate in their child's healthcare.

Improving vaccine-related pain, distress or fear in healthy children and adolescents-a systematic search of patient-focused interventions

OBJECTIVE

The WHO recently highlighted the need for research into potential interventions that can be used to mitigate pain during mass vaccinations, in addition to interventions specific for adolescents. The current review examines the literature on potential interventions that can be used during mass vaccination settings in healthy individuals between the ages of 4 and 15 years old.

METHODS

Criteria for inclusion were: 1)participants between the ages of 4-15 years, 2)interventions that were patient-focused, 3)vaccinations in healthy individuals, 4)outcome measures to include self-reported pain, fear or distress.

RESULTS

Twenty-seven articles were identified with a total of 31 interventions. Eleven interventions used injection-site specific interventions, 17 used patient-led interventions and three used a combination of both site-specific and patient-led interventions.

CONCLUSION

Interventions using coolant and vibration together, as well as a combination of site-specific and patient-led interventions, showed the most consistent effects in reducing self-reported pain, fear or distress.

Procedural Pain: Systematic Review of Parent Experiences and Information Needs

Parents wish to reduce their child's pain during medical procedures but may not know how to do so. We systematically reviewed the literature on parents' experiences and information needs related to managing their child's pain for common medical procedures. Of 2678 records retrieved through database searching, 5 were included. Three additional records were identified by scanning reference lists. Five studies were qualitative, and 3 were quantitative. Most took place in North America or Europe (n = 7) and described neonatal intensive care unit experiences (n = 5). Procedures included needle-related medical procedures (eg, venipuncture, phlebotomy, intravenous insertion), sutures, and wound repair and treatment, among others. Generally, parents desired being present during procedures, wanted to remain stoic for their child, and thought that information would be empowering and relieve stress but felt unsupported in taking an active role. Supporting and educating parents may empower them to lessen pain for their children while undergoing medical procedures.

Effectiveness of vibratory stimulation on needle-related procedural pain in children: a systematic review protocol

REVIEW QUESTION/OBJECTIVE

The objective of this systematic review is to identify, evaluate and synthesize evidence on the effectiveness of vibratory stimulation to reduce needle-related procedural pain in children aged 18 years and under.The review will address the following question: Is vibratory stimulation effective in reducing needle-related procedural pain in children aged 18 years and under, in comparison with no stimulation for needle-related procedures?

Pain begets pain. When marathon runners are not in pain anymore, they underestimate their memory of marathon pain--A mediation analysis

BACKGROUND

A previous study has shown that memory of pain induced by running a marathon might be underestimated. However, little is known about the factors that might influence such a memory distortion during pain recall. The aim of the study was to investigate the memory of pain induced by running a marathon and the factors that might influence it: (1) present pain during recall and (2) recall delay.

METHODS

A total of 127 marathon runners participated in the study, which comprised of two phases. After completion of the marathon, participants were asked to rate the intensity and the unpleasantness of their pain. Either a week or a month later, they were asked again to rate the intensity and the unpleasantness of the remembered and present pain experience.

RESULTS

Participants underestimated remembered pain intensity and pain unpleasantness only if they did not experience pain during recall (p < 0.05). We observed a trend for underestimation after a week (p = 0.09) and significant effect after a month (p < 0.05) of recall delay. Furthermore, present pain intensity during recall significantly mediated the memory of pain intensity induced by running the marathon, but only after a month. Similarly, present pain unpleasantness during recall significantly mediated the memory of pain unpleasantness, but only after a month.

CONCLUSIONS

It is concluded that memory of pain induced by running the marathon is underestimated after a month of recall delay and mediated by present pain during recall.

SIGNIFICANCE

This study explores factors acting during recall, influencing memory of naturally occurring pain induced by physical effort. The empirical findings provide the first robust evidence for a causal relationship between memory of pain and present pain during recall.

The Faces Emotional Coping Scale as a self-reporting instrument for coping with needle-related procedures: An initial validation study with children treated for type 1 diabetes

The aim of this study was to determine the concurrent and content validity, sensitivity and inter-rater reliability of the Faces Emotional Coping Scale (FECS) to evaluate the children's anticipation of the level of emotional coping in conjunction with a venepuncture. A total of 153 children with type 1 diabetes and 86 of their parents participated in the study. The age of the children, 76 of whom were boys, ranged from 7 to 18 years. The child and his or her parent reported the child's coping ability, and the child reported the pain intensity and unpleasantness of a venepuncture. The child also wrote a short narrative about his or her experience of the needle procedure. The FECS correlated negatively with the Coloured Analogue Scale and the Facial Affective Scale and positively with the FECS by proxy. The narratives of 90 children correlated negatively with the FECS. Younger children reported significantly lower scores than older children did regarding their ability to cope with a venepuncture. The children's scores on the FECS showed good agreement with the parents' scores. In this study, the FECS was deemed valid for measuring children's ability to cope with their emotions when undergoing needle-related procedures like venepuncture.

Sleep Quality, Affect, Pain, and Disability in Children With Chronic Pain: Is Affect a Mediator or Moderator?

Sleep problems have been identified as a potential antecedent of chronic pain and pain-related disability in pediatric populations. In adult studies, affect has been implicated in these relationships. This study sought to better understand the relationships between sleep quality, negative and positive affect, and pain and functioning in children with chronic pain. Participants included 213 children and adolescents (aged 7-17 years) presenting to a tertiary pain clinic with chronic pain. Children completed questionnaires measuring sleep quality, positive and negative affect, pain intensity, and functional disability. Results indicated that 74% of children reported disordered sleeping and that poor sleep quality was significantly associated with increased pain, disability, negative affect, and decreased positive affect. Our hypotheses were partially supported, with negative affect (but not positive affect) mediating the relationship between poor sleep and increased pain; and positive as well as negative affect mediating the relationship between poor sleep and increased functional disability. There was no evidence for affect as a moderator. This study adds to the growing literature demonstrating the effect of poor sleep quality on children's pain and functioning, highlighting the need to develop further longitudinal research to confirm the causal roles of these variables.

PERSPECTIVE

This article examines the relationship between poor sleep quality, affect (negative as well as positive), pain, and disability in children with chronic pain. The findings have the potential to better understand the processes involved in how poor sleep may lead to increased pain and pain-related disability.

The influence of pain memories on children's and adolescents' post-surgical pain experience: A longitudinal dyadic analysis

OBJECTIVE

Although children's pain memories have been shown to be a powerful predictor of subsequent pain experiences in acute procedural and experimental pain settings, little is known about the influence of children's and parents' pain memories on children's future pain experiences in other painful contexts. This study used a dyadic approach to examine the roles of children's and parents' memories of pain on their subsequent reporting of postsurgical pain several months after the child underwent a major surgical procedure.

METHOD

The sample included 66 parent-child dyads (Mage youth = 14.73 years, SD = 2.01) recruited from 2 tertiary level pediatric hospitals. At baseline, children and parents reported on their catastrophic thinking about the child's pain. Parent and child reports of child pain were collected at approximately 1 month and 5 months postsurgery. At 2-4 months postsurgery, children's and parents' memories for postsurgical pain were assessed.

RESULTS

Results revealed that children's, but not parents', pain memories were a strong predictor of subsequent pain experienced at 5 months postsurgery. Children's and parents' memories for pain did not influence each others' subsequent pain reporting.

CONCLUSIONS

Findings suggest that children's pain memories influence their continued recovery from postsurgical pain and may contribute to pain persistence. Implications for intervention and prevention are discussed. (PsycINFO Database Record

Trajectory of Postoperative Wound Pain Within the First 2 Weeks Following Posterior Spinal Fusion Surgery in Adolescent Idiopathic Scoliosis Patients

STUDY DESIGN

A prospective cohort study.

OBJECTIVE

The aim of this study was to determine and evaluate the trajectory of surgical wound pain from day 1 to day 14 after posterior spinal fusion (PSF) surgery in patients with adolescent idiopathic scoliosis (AIS).

SUMMARY OF BACKGROUND DATA

Information regarding how the postoperative pain improves with time offers invaluable information not only to the patients and parents but also to assist the clinician in managing postoperative pain.

METHODS

AIS patients who were planned for elective PSF surgery from September 2015 to December 2015 were prospectively recruited into this study. All patients underwent a similar pain management regimen with patient-controlled anesthesia (PCA) morphine, acetaminophen, celecoxib, and oxycodone hydrochloride.

RESULTS

A total of 40 patients (36 F:4 M) were recruited. The visual analogue score (VAS) pain score was highest at 12 hours postoperation (6.0 ± 2.3). It reduced to 3.9 ± 2.2 (day 4), 1.9 ± 1.6 (day 7), and 0.7 ± 1.1 (day 14). The total PCA usage in all patients was 12.4 ± 9.9 mg (first 12 hours), 7.1 ± 8.0 mg (12 to 24 hours), 5.6 ± 6.9 (24-36 hours), and 2.1 ± 6.1 mg (36-48 hours). The celecoxib capsules usage was reducing from 215.0 ± 152.8 mg at 24 hours to 55.0 ± 90.4 mg on day 14. The acetaminophen usage was reducing from 2275 ± 1198 mg at 24 hours to 150 ± 483 mg at day 14. Oxycodone hydrochloride capsules consumption rose to the peak of 1.4 ± 2.8 mg on day 4 before gradually reducing to none by day 13.

CONCLUSION

With an adequate postoperation pain regimen, significant pain should subside to a tolerable level by postoperative day 4 and negligible by postoperative day 7. Patient usually can be discharged on postoperative day 4 when the usage of PCA morphine was not required.

LEVEL OF EVIDENCE

2.

Modern pain neuroscience in clinical practice: applied to post-cancer, paediatric and sports-related pain

•

Generalized hypersensitivity in post-cancer, sports-related and pediatric pain.

•

Rationale for pain education, stress management and cognition targeted exercises.

•

Need to change from a biomedical or psychosocial to an integrated approach.

In the last decade, evidence regarding chronic pain has developed exponentially. Numerous studies show that many chronic pain populations show specific neuroplastic changes in the peripheral and central nervous system. These changes are reflected in clinical manifestations, like a generalized hypersensitivity of the somatosensory system. Besides a hypersensitivity of bottom-up nociceptive transmission, there is also evidence for top-down facilitation of pain due to malfunctioning of the endogenous descending nociceptive modulatory systems. These and other aspects of modern pain neuroscience are starting to be applied within daily clinical practice. However, currently the application of this knowledge is mostly limited to the general adult population with musculoskeletal problems, while evidence is getting stronger that also in other chronic pain populations these neuroplastic processes may contribute to the occurrence and persistence of the pain problem. Therefore, this masterclass article aims at giving an overview of the current modern pain neuroscience knowledge and its potential application in post-cancer, paediatric and sports-related pain problems.

Do abused young children feel less pain?

The objective of this study was to investigate whether acute pain in abused children was under recognized by doctors and nurses compared to children evaluated for accidental injuries. We hypothesize that an abused child's reaction to physical pain could be an additional symptom of this challenging diagnosis. For the observational prospective case control study in an emergency department, children were eligible when: younger than six years old, the reported trauma occurred within the previous seven days, the trauma comprised a bone injury or burn, and the child was able to express his or her pain. The case group comprised children for whom the medical team reported their abuse suspicions and supporting information to a court, and whose cases of abuse were subsequently confirmed. The control group consisted of children with a plausible cause for their injury and no obvious signs of abuse. The children were matched according to their age and type of trauma. The pain was assessed by doctors and nurses before analgesic administration using a certified pain scale. Among the 78 included children, pain was significantly less recognized in the abused children vs. the controls (relative risk=0.63; 95% CI: 0.402-0.986; p=0.04). We observed a discrepancy between the nurses' and doctors' scores for the pain assessments (Kappa coefficient=0.59, 95% CI: 0.40-0.77). Our results demonstrate that pain expression in abused children is under recognized by medical staff. They also suggest that abused children may have reduced pain expression after a traumatic event. Paying particular attention to the pain of abused children may also optimize the analgesic treatment.

Is pain during pediatric dental sedation associated with children’s pre-operative characteristics? An exploratory study

Abstract Introduction Little is known about the factors associated with the pain of children in dental treatment under conscious sedation. Objective To investigate the association between preoperative characteristics and pain during pediatric dental treatment under sedation. Material and method This exploratory study was conducted with 27 children in restorative treatment under sedation. Information on age, sex and experience of the children with previous dental treatment was obtained through interviews with parents. Oral health status, determined from the presence of dental caries, was verified using the dmf-t index. Pain was assessed by analyzing videos of the dental treatments by two previously calibrated examiners, using the items “legs”, “activity” and “crying” of the observational scale “face, legs, activity, consolability and crying” (FLACC). Data were analyzed using bivariate tests. Result Most of the children (n=14, 51.8%) had no pain during dental treatment under sedation. Among the other children, lower or moderate pain scores (median 1.1; minimum 0 to 3.8) were observed. The FLACC scores did not vary according to sex (P=0.38), previous experience with dental treatment (P=0.32) and history with local anesthesia (P=0.96). The FLACC scores did not correlate significantly with age (Spearman rho= -0.08, P=0.67) and dmf-t (Spearman rho= -0.04, P=0.84). Conclusion In this group of children, pain during dental treatment under sedation was of low frequency and intensity and did not associate with age, sex, oral condition and previous dental experience.

Expectation prior to human papilloma virus vaccination: 11 to 12-Year-old girls' written narratives

Expectations prior to needle-related procedures can influence individuals' decision making and compliance with immunization programmes. To protect from human papilloma virus (HPV) and cervical cancer, the immunization needs to be given before sexual debut raising interest for this study's aim to investigate how 11 to 12-year-old girls narrate about their expectations prior to HPV vaccination. A total of 27 girls aged 11 to 12 years participated in this qualitative narrative study by writing short narratives describing their expectations. The requirement for inclusion was to have accepted HPV vaccination. Data were subjected to qualitative content analysis. Findings showed the following expectations: going to hurt, going to be scared and going to turn out fine. The expectations were based on the girls' previous experiences, knowledge and self-image. The latent content revealed that the girls tried to transform uneasiness to confidence. The conclusion drawn from this study is that most girls of this age seem confident about their ability to cope with possible unpleasantness related to vaccinations. However, nurses need to find strategies to help those children who feel uneasy about needle-related procedures.

Consequences of Needle-Related Medical Procedures: A Hermeneutic Study With Young Children (3-7 Years)

Needle-related medical procedures (NRMPs) are often frightening and cause children anxiety and pain. Only a few studies have examined the perspectives of younger children. More knowledge is needed about younger children's experiences in caring situations such as NRMPs.

AIM

The aim of this study was to explain and understand the consequences related to NRMPs from younger children's perspectives.

METHODS

Participant observations and interviews with younger children who had experienced NRMPs were analysed using a lifeworld hermeneutic approach.

RESULTS

Experiencing fear is central for younger children during an NRMP and interpretation of its consequences formed the basis for the following themes: seeking security, realizing the adult's power, struggling for control, feeling ashamed, and surrendering. A comprehensive understanding is presented wherein younger children's experiences of NRMPs vary across time and space related to weakening and strengthening their feelings of fear.

CONCLUSIONS

Awareness is needed that adults' power becomes more obvious for children during an NRMP. Children's surrender does not necessarily imply acceptance of the procedure. Providing children with opportunities to control elements of the procedure creates a foundation for active participation, and vice versa.

Remembering pain after surgery: a longitudinal examination of the role of pain catastrophizing in children's and parents' recall

Children's memories for pain play a powerful role in their pain experiences. Parents' memories may also influence children's pain experiences, by influencing parent-child interactions about pain and children's cognitions and behaviors. Pain catastrophizing of children and parents has been implicated as a factor underlying memory biases; however, this has not been empirically examined. The current longitudinal study is the first to examine the role of pain catastrophizing of children and parents in the development of their pain memories after surgery. Participants were 49 youth (32 girls) aged 10 to 18 years undergoing major surgery and their parents. One week before surgery, children and parents completed measures of pain catastrophizing. Two weeks after surgery (the acute recovery period), children and parents completed measures of child pain intensity and affect. Two to 4 months after surgery, children's and parents' memories of child pain intensity and affect were elicited. Hierarchical linear regression models revealed that over and above covariates, parent catastrophizing about their child's pain (magnification, rumination) accounted for a significant portion of variance in children's affective and parents' sensory pain memories. Although parent catastrophizing had a direct effect on pain memories, mediation analyses revealed that child catastrophizing (helplessness) indirectly influenced children's and parents' pain memories through the child's postoperative pain experience. Findings highlight that aspects of catastrophic thinking about child pain before surgery are linked to distressing pain memories several months later. Although both child and parent catastrophizing influence pain memory development, parent catastrophizing is most influential to both children's and parents' evolving cognitions about child pain.

Distraction Using the BUZZY for Children During an IV Insertion

Needle pricks are rated by children as their most feared medical event resulting in acute pain, anxiety and distress, which negatively affects both the child and his/her parents.

OBJECTIVES

To investigate the effects of external cold and vibration via the "BUZZY" on pain ratings of children, their parents and nurses during peripheral IV insertion, to measure the time to a successful IV insertion and to assess the factors that are associated with pain perception of children.

METHODS

In this randomized control trial (RCT), children between the ages of 4 to 12years were assigned to either an intervention or a control group. The intervention group (n=25) had the "BUZZY" applied during IV insertion while the control group (n=23) did not have the "BUZZY". Children were asked to rate their pain along with their parents and nurses on the Wong-Baker FACES Pain Rating Scale. Time to successful IV insertion and background characteristic of children were assessed and compared.

RESULTS

Pain scores were significantly lower in the "BUZZY" group for children and the nurses. Time to a successful IV insertion did not differ between groups. Gender, age, previous hospitalization, diagnoses and analgesics were all factors associated with the children's pain scores. However, a multiple regression analysis found that only the "BUZZY" remained a significant predictor of pain scores in children.

CLINICAL IMPLICATIONS

The "BUZZY" may be an easily accessed, inexpensive ($39.95 each at $0.09 per 3 minute stick), and effective technique to control or reduce pain in young children undergoing IV insertion.

Children's Forgetting of Pain-Related Memories

OBJECTIVE

Given that forgetting negative experiences can help children cope with these experiences, we examined their ability to forget negative aspects of painful events.

METHODS

86 children aged 7-15 years participated in a retrieval-induced forgetting task whereby they repeatedly retrieved positive details of a physically painful experience, and an experimental pain task (cold-pressor task).

RESULTS

Repeatedly retrieving positive details of a prior pain experience produced forgetting of the negative aspects of that experience. Pain-related self-efficacy predicted retrieval-induced forgetting; children with a poorer belief in their ability to cope with pain experienced less forgetting. Children who had a more difficult time forgetting prior negative experiences were more anxious about the pain task and reported higher pain thresholds.

CONCLUSIONS

Understanding children's memory for painful experiences may help improve their pain management and coping ability.

Procedural Preparation and Support as a Standard of Care in Pediatric Oncology

Youth with cancer undergo many repeated and invasive medical procedures that are often painful and highly distressing. A systematic review of published research since 1995 identified 65 papers (11 review articles and 54 empirical studies) that investigated preparatory information and psychological interventions for a variety of medical procedures in pediatric cancer. Distraction, combined cognitive-behavioral strategies, and hypnosis were identified as effective for reducing child pain and increasing child coping. Low- to high-quality evidence informed strong recommendations for all youth with cancer to receive developmentally appropriate preparatory information and psychological intervention for invasive medical procedures.

Sedation methods for intra-articular corticosteroid injections in Juvenile Idiopathic Arthritis: a review

Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in children. Intra-articular corticosteroid injection (IASI), one of the cornerstones of treatment for this disease, is usually associated with anxiety and pain. IASI in JIA may be performed under general anesthesia, conscious sedation, or local anesthesia alone. Currently, there is no widely accepted standard of care regarding the sedation method for IASI. This review discusses the different methods of anesthesia and sedation in this procedure, emphasizing the advantages and shortcomings of each method.

Matching doses of distraction with child risk for distress during a medical procedure: a randomized clinical trial

BACKGROUND

Parents often want to provide support to their children during medical procedures, but not all parents are effective in providing distraction after brief training.

OBJECTIVE

The aim of this study was to investigate the effects of three doses of distraction intervention for children at high and medium risk for procedure-related distress.

METHODS

Children undergoing scheduled intravenous insertions for diagnostic or treatment purposes and their parents participated. A computerized application, Children, Parents and Distraction, was used to predict distress risk. Doses of intervention were basic (parents trained on providing distraction), enhanced (basic training plus tailored instructions, environmental modifications, and support and guidance from the research assistant), and professional (a trained research assistant provided distraction). Outcome measures were Observational Scale of Behavioral Distress-Revised for behavioral distress, Oucher for self-reported pain, parent report of child distress, and salivary cortisol for physiological distress.

RESULTS

A total of 574 children, ages 4-10, and their parents participated. The Children, Parents and Distraction predicted that the risk for distress was high for 156 children, medium for 372, and low for 46. Children predicted to have higher risk for distress displayed more behavioral distress (p < .01). Children in the medium-risk group who had the professional intervention displayed significantly less behavioral distress (p < .001). Children in the high-risk group tended to have less behavioral distress when receiving the professional intervention (p = .07). There were no significant group differences for self-report of pain, parent report of distress, or cortisol levels.

DISCUSSION

Some parents may need additional training in providing distraction to their children during procedures, and some children at medium and high risk for distress may need professional support. Parents should be asked about their preferences in acting as the distraction coach and, if willing, be provided as much training and support as possible in the clinical situation.

Back pain in children surveyed with weekly text messages - a 2.5 year prospective school cohort study

BACKGROUND

Back pain is reported to occur already in childhood, but its development at that age is not well understood. The aims of this study were to describe BP in children aged 6-12 years, and to investigate any sex and age differences.

METHODS

Data on back pain (defined as pain in the neck, mid back and/or lower back) were collected once a week from parents replying to automated text-messages over 2.5 school years from 2008 till 2011. The prevalence estimates were presented as percentages and 95% confidence intervals. Differences between estimates were considered significant if confidence intervals did not overlap. A test for trend, using a multi-level mixed-effects logistic regression extended to the longitudinal and multilevel setting, was performed to see whether back pain reporting increased with age.

RESULTS

Depending on the age group, 13-38% children reported back pain at least once per survey year, and 5-23% at least twice per survey year. The average weekly prevalence estimate ranged between 1% and 5%. In the final survey year more girls than boys reported back pain at least twice. The prevalence estimates did not increase monotonically with age but showed a greater increase in children younger than 9/10, after which they remained relatively stable up to the age of 12 years.

CONCLUSIONS

We found that back pain was not a common problem in this age group and recommend health professionals be vigilant if a child presents with constant or recurring back pain. Our results need to be supplemented by a better understanding of the severity and consequences of back pain in childhood. It would be productive to study the circumstances surrounding the appearance of back pain in childhood, as well as, how various bio-psycho-social factors affect its onset and later recurrence. Knowledge about the causes of back pain in childhood might allow early prevention.

Perception of venipuncture pain in children suffering from chronic diseases

BACKGROUND

Venipuncture pain in children results from a variety of co-factors which increase the intensity of the nociceptive stimulus. Among them, anticipatory anxiety plays an important role. Children with chronic diseases undergo invasive procedures and venipuncture more often than other children. Some healthcare professionals still believe that children who are repeatedly exposed to painful procedures, such as children with chronic diseases, gradually increase their pain tolerance and that, as a result, they have a higher pain threshold than children with no chronic diseases. The purpose of this study was to assess whether a difference exists in the perception of venipuncture pain between children with chronic diseases and children with no previous health problems nor experience of venipuncture.

METHODS

A cross-sectional study was carried out using the Wong and numeric pain scales and the Observational Scale of Behavioral Distress (OSBD) for the assessment of behavioral distress. A group of children with chronic diseases and a group of children with no previous health problems nor experience of venipuncture, aged 4 to 12 years, both boys and girls, were observed during a standardized venipuncture procedure.

RESULTS

The study included 230 children in total: 82 of them suffered from chronic diseases and had already experienced venipuncture at least once, while the remaining 148 children had no previous experience of venipuncture. The children with chronic diseases reported more pain (median pain score of 8 on the Wong or numeric scales,) and showed more signs of behavioral distress (median score of 27 on the OSBD) than non-chronic children (median pain score of 2 on the Wong/numeric scales, p = 0.00001; median OSBD score 5, p = 0.00001).

CONCLUSIONS

Our study suggests that children with chronic diseases have a lower pain threshold than children of the same sex and age who experience venipuncture for the first time.

From the mouth of babes: Getting vaccinated doesn't have to hurt

BACKGROUND:

Analgesic interventions are not commonly administered during childhood vaccination, despite the fact that two-thirds of children are afraid of needles and one-tenth are noncompliant with immunization.

OBJECTIVE:

To explore children’s experiences of vaccination and preferences for analgesia.

METHODS:

A total of 17 children (four to 14 years of age) at an independent school in Toronto (Ontario) participated in three focus-group interviews. The majority had previous experience with pain management interventions during vaccination. Thematic content analysis was used to analyze interview transcripts.

RESULTS:

The findings were categorized into three main themes: experience of vaccination; roles and responsibilities regarding pain management; and impact of pain management. Children easily recalled previous vaccinations and discussed fear and distress experienced by themselves and others. Children believed that parents and immunizers should prepare them ahead of time and use interventions to manage and monitor pain. They also wanted adults to support their efforts to lead pain management. Children discussed benefits of managing pain, including reduced unnecessary suffering, improved vaccination experience, reduced risk of developing needle fears and reduced noncompliant behaviours. They were knowledgeable about strategies for reducing pain including distraction, topical anesthetics and injection techniques. They contrasted vaccination with and without pain management, and indicated a preference for pain management.

CONCLUSION:

Children reported that managing vaccination pain is important and that analgesic interventions should routinely be used. Incorporating pain management in the process of vaccination has the potential to improve children’s experiences with vaccination and promote more positive attitudes and behaviours.

Chronic pain in children after cardiac surgery via sternotomy

INTRODUCTION

Chronic pain is common after sternotomy in adults with reported prevalence rates of 20-50%. So far, no studies have examined whether children develop chronic pain after sternotomy.

MATERIAL AND METHODS

Postal questionnaires were sent to 171 children 10-60 months after undergoing cardiac surgery via sternotomy at the age of 0-12 years. The children were asked to recall the intensity and duration of their post-operative pain, if necessary with the help from their parents, and to describe the intensity and character of any present pain. Another group of 13 children underwent quantitative sensory testing of the scar area 3 months after sternotomy.

RESULTS

A total of 121 children, median (range) age 7.7 (4.2-16.9) years, answered the questionnaire. Their age at the time of surgery was median (range) 3.8 (0-12.9) years, and the follow-up period was median (range) 4 (0.8-5.1) years. In all, 26 children (21%) reported present pain and/or pain within the last week located in the scar area; in 12 (46%) out of the 26 children, the intensity was ≥4 on a numeric rating scale (0-10). Quantitative sensory testing of the scar area revealed sensory abnormalities--pinprick hyperalgesia and brush and cold allodynia--in 10 out of 13 children.

CONCLUSION

Chronic pain after cardiac surgery via sternotomy in children is a problem that should not be neglected. The pain is likely to have a neuropathic component as suggested by the sensory abnormalities demonstrated by quantitative sensory testing.

A Delphi study to identify indicators of poorly managed pain for pediatric postoperative and procedural pain

BACKGROUND

Adverse health care events are injuries occurring as a result of patient care. Significant acute pain is often caused by medical and surgical procedures in children, and it has been argued that undermanaged pain should be considered to be an adverse event. Indicators are often used to identify other potential adverse events. There are currently no validated indicators for undertreated pediatric pain.

OBJECTIVES

To develop a preliminary list of indicators of undermanaged pain in hospitalized pediatric patients.

METHODS

The Delphi technique was used to survey experts in pediatric pain management and quality improvement. The first round used an electronic questionnaire to ask: "In your opinion, what indicators would signify that acute pain in a child has not been adequately controlled?" Responses were grouped together in semantically similar themes, providing a list of possible adverse event indicators. Using this list, an electronic questionnaire was developed for round&nbsp;2&nbsp;asking respondents to indicate the importance of each potential indicator.

RESULTS

All but one indicator achieved a level of consensus ≥70%. Separate indicators emerged for postoperative and procedural pain. An additional distinction was made between indicators that could be identified by chart review and those requiring observation of practice and assessment from the child or parent.

DISCUSSION

The adverse care indicators developed in the present study require further refinement. There is a need to test their clinical usability and to determine whether these indicators actually identify undermanaged pain in clinical practice. The present study is an important first step in identifying undermanaged pain in hospital and treating it as an adverse event.

CONCLUSION

The adverse care indicators developed in the present study are the first step in conceptualizing mismanaged pain as an adverse event.

Influences shaping nurses' use of distraction for children's procedural pain

PURPOSE

This study explored pediatric nurses' choices to use distraction for managing painful procedures.

DESIGN AND METHODS

Using interpretive description approaches, interviews with pediatric nurses provided descriptions of choices to manage procedural pain.

RESULTS

Nurses' distress influenced distraction use to mitigate the suffering of children and themselves. Newer nurses described task mastery as influencing distraction choices. Nurses' accounts of performing painful procedures on children mirrored children's descriptions of pain from the literature.

PRACTICE IMPLICATIONS

Nurses' distress and competency performing painful procedures on children influenced practice. Future qualitative studies could extend understanding of pain management choices by pediatric nurses and the impact on undermanaged pain.

Nurses' perspectives on supporting children during needle-related medical procedures

Children state that among their worst fears during hospitalization are those related to various nursing procedures and to injections and needles. Nurses thus have a responsibility to help children cope with needle-related medical procedures (NRMP) and the potentially negative effects of these. The aim of the study is to describe the lived experience of supporting children during NRMP, from the perspective of nurses. Fourteen nurses took part in the study, six of whom participated on two occasions thus resulting in 20 interviews. A reflective lifeworld research approach was used, and phenomenological analysis was applied. The result shows that supporting children during NRMP is characterized by a desire to meet the child in his/her own world and by an effort to reach the child's horizon of understanding regarding these actions, based on the given conditions. The essential meaning of the phenomenon is founded on the following constituents: developing relationships through conversation, being sensitive to embodied responses, balancing between tact and use of restraint, being the child's advocate, adjusting time, and maintaining belief. The discussion focuses on how nurses can support children through various types of conversation and by receiving help from the parents' ability to be supportive, and on whether restraint can be supportive or not for children during NRMP. Our conclusion is that nurses have to see each individual child, meet him/her in their own world, and decide on supportive actions while at the same time balancing their responsibility for the completion of the NRMP. This work can be described as "balancing on a tightrope" in an unpredictable situation.

The facial affective scale as a predictor for pain unpleasantness when children undergo immunizations

Needle fear is a common problem in children undergoing immunization. To ensure that the individual child's needs are met during a painful procedure it would be beneficial to be able to predict whether there is a need for extra support. The self-reporting instrument facial affective scale (FAS) could have potential for this purpose. The aim of this study was to evaluate whether the FAS can predict pain unpleasantness in girls undergoing immunization. Girls, aged 11-12 years, reported their expected pain unpleasantness on the FAS at least two weeks before and then experienced pain unpleasantness immediately before each vaccination. The experienced pain unpleasantness during the vaccination was also reported immediately after each immunization. The level of anxiety was similarly assessed during each vaccination and supplemented with stress measures in relation to the procedure in order to assess and evaluate concurrent validity. The results show that the FAS is valid to predict pain unpleasantness in 11-12-year-old girls who undergo immunizations and that it has the potential to be a feasible instrument to identify children who are in need of extra support to cope with immunization. In conclusion, the FAS measurement can facilitate caring interventions.

Effect of pain in pediatric inherited neuropathies

OBJECTIVE

Assess the prevalence and impact of pain in children with Charcot-Marie-Tooth (CMT) disease.

METHODS

In this prospective cross-sectional study on children with CMT disease seen at study sites of the Inherited Neuropathy Consortium, we collected standardized assessments of pain (Wong-Baker FACES Pain Rating Scale) from 176 patients (140 children aged 8-18 years, and 36 children aged 2-7 years through parent proxies), along with standardized clinical assessments and quality-of-life (QOL) outcomes. We then developed a series of multivariate regression models to determine whether standardized measures of neuropathy severity, functional impact, or structural changes to the feet explained the observed pain scores.

RESULTS

The mean score on the Wong-Baker FACES Pain Rating Scale was 2 (range 0-5). Increased pain strongly correlated with worse QOL scores but not with more severe neuropathy. Independent determinants of increased pain in children with CMT disease included measures of ankle inflexibility.

CONCLUSION

Pain is present in children with CMT disease and negatively affects QOL. Pain scores do not positively correlate with neuropathy severity but do correlate in limited univariate analyses with measures of ankle inflexibility. Further studies to elucidate the mechanisms of pain may help identify treatments that can reduce pain and improve QOL in patients with CMT disease.

Screening for pain in pediatric brain tumor survivors using the pain thermometer

Numerous instruments have been developed to measure pain within various populations; however, there remains limited understanding of how these tools are applicable to childhood cancer survivors. This study compared a single-item screening measure, the Pain Thermometer (PT), with a more in-depth measure, the Brief Pain Survey (BPS), in a cohort of childhood brain tumor survivors. Ninety-nine survivors (aged 13-32 years) with a median time from diagnosis of 9.9 years (range = 2-18 years) completed the 2 instruments. Thirty-seven survivors (37.4%) were identified on the BPS as having clinically significant pain, but the PT was not found to be an accurate tool for identifying these pain cases. Application of receiver operating characteristic curve analysis of PT ratings against BPS criterion indicated overall concordance between measures. No cutoff score on the PT were identified that resulted in acceptable sensitivity, meaning pain cases identified on the BPS would be missed on the PT. Findings suggest that a multi-item screening measure may better identify clinically significant pain in childhood brain tumor survivors compared with a 1-item screening measure alone.

Introducing LAPPS (Liverpool Anticipatory Procedural Pain Score): the pragmatic development of an innovative approach to predicting and treating procedural pain and distress in children

Removal of chest drains is a painful procedure and distresses patients, parents and nurses. To identify problems and improve management we developed a concerted approach to both assessment and treatment using audit. An initial prospective audit of post-op cardiac children undergoing chest drain +/- pacing wire removal was undertaken. A clinical tool was developed, to assess children before procedures and provide a treatment plan aimed at reducing pain and distress. The tool incorporated the intensity of the procedure, the child's usual response to procedures and previous experience. The treatment protocol included drug and non-drug therapies. The initial audit of 91 children confirmed that pain and distress were problems. It highlighted inconsistencies in management as a common feature. Following introduction of the LAPPS tool and treatment protocol, a second audit of 72 children was undertaken. Although only 46 per cent of pathways were satisfactorily completed, the percentage of patients described as 'inconsolable, screaming and withdrawn' reduced from 29 per cent to 9 per cent. Introduction of the LAPPS assessment tool and treatment protocol reduced pain and distress during removal of chest drains. Research is needed to test the psychometrics of the tool and the effectiveness of the treatment protocol prior to wider use.

Local delivery of bupivacaine in the wound reduces opioid requirements after intraabdominal surgery in children

BACKGROUND

Local anaesthetic infusions into the surgical wound have been shown to reduce postoperative pain and the need for opioids in adults. In children, it was found to be safe and efficacious following sternotomy and orthopaedic surgery. The aim of this study was to evaluate the need for opioids postoperatively in children receiving wound catheters delivering either bupivacaine or saline following one of three defined abdominal or bladder procedures.

METHODS

Prospective, randomized, double-blind, placebo controlled study. Thirty-three children, 6 months of age to 13 years of age, undergoing elective surgery for enterostomy closure, open gastrostomy or ureteral reimplantation were randomized to receive bupivacaine or saline wound infusions for 72 h postoperatively. All patients received acetaminophen orally or rectally for every 6 h. Breakthrough pain was treated with morphine bolus doses of 0.05 mg/kg or infusions if more than three morphine doses were required. Pain scores were assessed every 3 h. Outcome measures were morphine dosages, return to full oral intake and length of hospital stay.

RESULTS

On the first postoperative day, patients with bupivacaine infusions had significantly less need for morphine (1.3 ± 1.3 SD doses) compared to those receiving saline infusions (3.1+/2.5 SD doses, p < 0.05). No difference was seen during postoperative day two or three. There was no significant difference between the groups regarding time to full oral intake and time to discharge.

CONCLUSIONS

Continuous infusion of bupivacaine in the abdominal wound was effective in reducing postoperative pain in children. It significantly reduced the need for additional opioids and can be considered for postoperative pain management in children.

Development and testing of a multidimensional iPhone pain assessment application for adolescents with cancer

Background

Pain is one of the most common and distressing symptoms reported by adolescents with cancer. Despite advancements in pain assessment and management research, pain due to cancer and/or its treatments continues to be poorly managed. Our research group has developed a native iPhone application (app) called Pain Squad to tackle the problem of poorly managed pain in the adolescent with cancer group. The app functions as an electronic pain diary and is unique in its ability to collect data on pain intensity, duration, location, and the impact pain has on an adolescent’s life (ie, relationships, school work, sleep, mood). It also evaluates medications and other physical and psychological pain management strategies used. Users are prompted twice daily at configurable times to complete 20 questions characterizing their pain and the app transmits results to a database for aggregate reporting through a Web interface. Each diary entry represents a pain case filed by an adolescent with cancer and a reward system (ie, moving up through law-enforcement team ranks, built-in videotaped acknowledgements from fictitious officers) encourages consistent use of the diary.

Objective

Our objective was to design, develop, and test the usability, feasibility, compliance, and satisfaction of a game-based smartphone pain assessment tool for adolescents with cancer.

Methods

We used both low- and high-fidelity qualitative usability testing with qualitative semi-structured, audio-taped interviews and iterative cycles to design and refine the iPhone based Pain Squad app. Qualitative thematic analysis of interviews using constant comparative methodology captured emergent themes related to app usability. Content validity was assessed using question importance-rating surveys completed by participants. Compliance and satisfaction data were collected following a 2-week feasibility trial where users were alarmed to record their pain twice daily on the app.

Results

Thematic analysis of usability interviews showed the app to be appealing overall to adolescents. Analyses of both low- and high-fidelity testing resulted in minor revisions to the app to refine the theme and improve its usability. Adolescents resoundingly endorsed the game-based nature of the app and its virtual reward system. The importance of app pain diary questions was established by content validity analysis. Compliance with the app, assessed during feasibility testing, was high (mean 81%, SD 22%) and adolescents from this phase of the study found the app likeable, easy to use, and not bothersome to complete.

Conclusions

A multifaceted usability approach demonstrated how the Pain Squad app could be made more appealing to children and adolescents with cancer. The game-based nature and built-in reward system of the app was appealing to adolescents and may have resulted in the high compliance rates and satisfaction ratings observed during clinical feasibility testing.