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Biomedical subjects

Lynn S Walker

Publications and source records attributed to Lynn S Walker.

At least 19 recordsLinked to original sources
PubMed2007

Multiple somatic symptoms linked to positive screen for depression in pediatric patients with chronic abdominal pain.

OBJECTIVES: Abdominal pain is a frequent childhood complaint, comprising 2% to 4% of all reasons for pediatric office visits. Patients referred for evaluation of chronic abdominal pain (CAP) frequently present with comorbid nonspecific somatic symptoms that may complicate the medical evaluation and lead to unnecessary diagnostic tests and procedures. We tested the hypothesis that multiple nongastrointestinal (GI) symptoms in children presenting with CAP is a marker for clinically significant levels of depressive symptoms. METHODS: Participants were 400 consecutive new patients (ages 8-17 years; 63% female) referred to the pediatric gastroenterology clinic for evaluation of abdominal pain of > 3 months' duration. Patients reported how frequently they experienced 7 non-GI symptoms. Patients were screened for depression with the Children's Depression Inventory. RESULTS: On the basis of their Children's Depression Inventory scores, 58 (15%) patients had a positive screen for clinically significant depressive symptoms. Patients with a positive versus negative depression screen did not differ by sex, pain duration or laboratory evidence of organic disease. Patient report of > or = 3 non-GI symptoms maximized sensitivity (71%) and specificity (75%) in prediction of depression screening results. With each addition of a non-GI symptom, the odds of a positive screen for depression doubled. CONCLUSIONS: For patients with and without organic disease findings associated with CAP, the presence of > or = 3 non-GI symptoms should signal the practitioner to evaluate for depression and may be used as an indicator of the likelihood of depression in the absence of specific inquiry into emotional symptoms.

Abdominal Pain↗
PubMed2006

Validation of a symptom provocation test for laboratory studies of abdominal pain and discomfort in children and adolescents.

OBJECTIVE: Assessed the convergent and discriminant validity of a water load symptom provocation test (WL-SPT) in creating visceral sensations similar to the naturally occurring sensations experienced by children with functional abdominal pain. METHODS: Participants were pediatric patients with functional abdominal pain (N = 110) and healthy school children (N = 120) between the ages of 8 and 16 years. Pain patients completed questionnaires describing gastrointestinal (GI) and non-gastrointestinal (non-GI) symptoms associated with their typical abdominal pain episodes. Weeks later, the WL-SPT was administered to pain patients and well children. Before and immediately following the WL-SPT, children rated their symptoms. RESULTS: The WL-SPT produced (a) significant increases in children's GI symptoms that were reliably predicted by the children's naturally occurring GI symptoms, and (b) significantly greater increases in GI symptoms in pain patients than in well children. CONCLUSIONS: The WL-SPT produces clinically relevant symptoms for laboratory studies of children with functional abdominal pain.

Abdominal Pain↗
PubMed2006

Appraisal and coping with daily stressors by pediatric patients with chronic abdominal pain.

OBJECTIVE: To test the hypothesis that pain patients differ from well children in their appraisal and coping with daily stressors and to test a model of the relation of stress appraisal and coping to symptoms and disability. METHODS: Pediatric patients with chronic abdominal pain (n = 143) and well children (n = 104) completed a 5-day diary study regarding their appraisal and coping with daily stressors. Somatic symptoms, depressive symptoms, and functional disability were assessed 2 months later. RESULTS: Compared to well children, pain patients were less confident of their ability either to change or to adapt to stress and were less likely to use accommodative coping strategies. Different patterns of stress appraisal were associated with active, passive, and accommodative coping. Both appraisals and coping were significantly related to symptoms and disability. CONCLUSIONS: The relation between stress and symptoms in pediatric pain patients may be explained in part by their appraisal and coping with stressors. The relation between appraisal and coping was consistent with Lazarus, R. S., & Folkman, S. (1984). Stress, Appraisal, and Coping. New York: Springer.

Abdominal Pain↗
PubMed2006

Parent attention versus distraction: impact on symptom complaints by children with and without chronic functional abdominal pain.

The objective of this study was to assess the impact of parent attention and distraction on symptom complaints by children with and without chronic functional abdominal pain. The water load symptom provocation task was used to induce visceral discomfort in pediatric patients with abdominal pain (N=104) and well children (N=119), ages 8-16 years. Parents were randomly assigned and trained to interact with their children according to one of three conditions: Attention, Distraction, or No Instruction. Children's symptom complaints and parents' responses were audiotaped and coded. Children completed a self-report measure of gastrointestinal (GI) symptoms before and after interacting with their parents. Parents' and children's perceptions of their interaction were assessed. Compared to the No Instruction condition, symptom complaints by pain patients and well children nearly doubled in the Attention condition and were reduced by half in the Distraction condition. The effect of attention on symptom complaints was greater for female pain patients than for male patients or well children. Findings for self-report GI symptoms were similar to those for audiotaped symptom complaints. Both pain patients and well children in the Distraction condition rated parents as making them feel better compared to ratings for the Attention condition. Parents of pain patients rated distraction as having greater potential negative impact on their children than attention. Parents' responses to children's symptom complaints can significantly increase or decrease those complaints. Girls with functional abdominal pain are particularly vulnerable to the symptom-reinforcing effects of parental attention.

Abdominal Pain↗
PubMed2006

Functional assessment of pediatric pain patients: psychometric properties of the functional disability inventory.

The Functional Disability Inventory (FDI; Walker LS, Greene JW. The functional disability inventory: measuring a neglected dimension of child health status. J Pediatr Psychol 1991;16:39-58) assesses activity limitations in children and adolescents with a variety of pediatric conditions. This study evaluated the psychometric properties of the FDI in pediatric pain patients. Participants included 596 patients with chronic abdominal pain, ages 8-17, and a subset of their parents (n = 151) who completed the FDI and measures of pain, limitations in school activities, and somatic and depressive symptoms at a clinic visit. Test-retest reliability was high at 2 weeks (child report, .74; parent-report, .64) and moderate at 3 months (child report, .48; parent report, .39). Internal consistency reliability was excellent, ranging from .86 to .91. Validity was supported by significant correlations of child- and parent-report FDI scores with measures of school-related disability, pain, and somatic symptoms. Study results add to a growing body of empirical literature supporting the reliability and validity of the FDI for functional assessment of pediatric patients with chronic pain.

Activities of Daily Living↗
PubMed2006

Relationship between the decision to take a child to the clinic for abdominal pain and maternal psychological distress.

BACKGROUND: Among adults with functional gastrointestinal disorders, psychological distress influences who consults a physician, but little is known about predictors of consultation when the patient is a child. OBJECTIVE: To determine the relative contributions of psychological symptoms of the mother, psychological symptoms of the child, severity of child abdominal pain, and family stress to consultation. DESIGN: Observational study. SETTING: Health maintenance organization. PARTICIPANTS: Two hundred seventy-five mothers of 334 children who had abdominal pain in the past 2 weeks, as per child self-report. MAIN OUTCOME MEASURES: Mothers completed questionnaires about themselves (Symptom Checklist 90-Revised) and their children (school absences, medication use, and the Child Behavior Checklist). Children completed the Pain Beliefs Questionnaire to assess perceived pain severity. RESULTS: Thirty-nine children had been taken to the clinic for abdominal pain symptoms at least once in the past 3 months (consulters), whereas 295 were nonconsulters. Logistic regression analyses revealed that both the child's self-report of perceived pain severity (P<.001) and maternal psychological symptoms (P = .006) predicted consultation. Although children who visited physicians had significantly more psychological symptoms, this was not a significant predictor of consultation after adjusting for maternal psychological symptoms. Family stress did not predict consultation. CONCLUSION: The decision to take a child to the clinic for abdominal pain is best predicted by maternal psychological distress and the child's perceived pain severity.

Abdominal Pain↗
PubMed2006

Childhood functional gastrointestinal disorders: child/adolescent.

The Rome II pediatric criteria for functional gastrointestinal disorders (FGIDs) were defined in 1999 to be used as diagnostic tools and to advance empirical research. In this document, the Rome III Committee aimed to update and revise the pediatric criteria. The decision-making process to define Rome III criteria for children aged 4-18 years consisted of arriving at a consensus based on clinical experience and review of the literature. Whenever possible, changes in the criteria were evidence based. Otherwise, clinical experience was used when deemed necessary. Few publications addressing Rome II criteria were available to guide the committee. The clinical entities addressed include (1) cyclic vomiting syndrome, rumination, and aerophagia; 2) abdominal pain-related FGIDs including functional dyspepsia, irritable bowel syndrome, abdominal migraine, and functional abdominal pain; and (3) functional constipation and non-retentive fecal incontinence. Adolescent rumination and functional constipation are newly defined for this age group, and the previously designated functional fecal retention is now included in functional constipation. Other notable changes from Rome II to Rome III criteria include the decrease from 3 to 2 months in required symptom duration for noncyclic disorders and the modification of the criteria for functional abdominal pain. The Rome III child and adolescent criteria represent an evolution from Rome II and should prove useful for both clinicians and researchers dealing with childhood FGIDs. The future availability of additional evidence-based data will likely continue to modify pediatric criteria for FGIDs.

Abdominal Pain↗
PubMed2006

Mothers' responses to children's pain.

OBJECTIVES: This study was aimed at identifying mothers' responses to children's pain, evaluating whether these could be organized into different types of responses, and developing a questionnaire to assess these responses. METHODS: Common responses to children's pain were identified on the basis of a review of the literature and interviews with mothers of pediatric patients with pain. Categories reflecting these parenting behaviors were generated for a questionnaire on Adult Responses to Children's Symptoms, which was administered to 145 mothers of pediatric patients aged between 8-18 years referred for medical evaluation of abdominal pain. RESULTS: Factor analysis using principal components extraction with oblique rotation yielded 3 factors. Factor 1, Protect, reflected caretaking behaviors that placed the child in a passive sick role. Factor 2, Minimize, reflected criticism of the child's pain behavior. Factor 3, Encourage and Monitor, reflected encouragement of the child's activity while monitoring the child's symptoms. Subscales based on these correlated factors had good internal consistency. DISCUSSION: Results suggest that mothers' responses to children's pain behavior may be classified into 3 distinct categories. Additional research is needed to assess whether observational methodologies would yield a similar typology of parents' responses to children's pain. Psychometric properties of the Adult Responses to Children's Symptoms should be examined in larger samples and in studies of the relation of the subscales to related constructs (eg, measures of parenting beliefs and behavior) and to children's pain behavior.

Adolescent↗
PubMed2006

Validation of a measure of protective parent responses to children's pain.

OBJECTIVES: To assess the validity of the Protect Scale of the Adult Responses to Children's Symptoms (ARCS) Questionnaire with regard to mothers' responses to their children's abdominal pain. METHODS: Mothers with High (n=32) and Low (n=35) Protect scores on the ARCS questionnaire were recruited from participants in a larger study of family illness behavior. Mothers completed a 28-day diary report of responses to their children's abdominal pain episodes. Records of their children's annual health service utilization and costs were obtained from their health maintenance organization (HMO). RESULTS: Mothers' scores on the ARCS Protect Scale were significantly correlated with their subsequent diary reports of protective responses to their children's abdominal pain. Compared to children of mothers in the Low Protect group, children of mothers in the High Protect group made significantly more health care visits for gastrointestinal symptoms and had significantly higher health care costs. CONCLUSIONS: Results supported the validity of the Protect Scale of the ARCS and demonstrated that mothers' protective responses to children's abdominal pain complaints at home predicted subsequent health service use for gastrointestinal symptoms.

Abdominal Pain↗
PubMed2006

Functional gastrointestinal disorders in African American children in primary care.

OBJECTIVE: To determine the prevalence of functional gastrointestinal disorders (FGIDs) in a primary care setting and to assess the usefulness of pediatric Rome criteria. METHODS: The Questionnaire on Pediatric Gastrointestinal Symptoms (QPGS) assessing the pediatric Rome criteria was administered to 243 school-age children visiting a general pediatric clinic for annual school physicals. Pearson chi statistics were used to determine the association of various demographic factors with FGIDs. RESULTS: All children were African American, 47.7% were girls, and the mean +/- standard deviation age of the group was 10.7 +/- 3.9 years. QPGS detected 52 children (21.4%) with FGID. Diagnoses included aerophagia (6), abdominal migraine (1), cyclic vomiting syndrome (2), functional dyspepsia (2), functional abdominal pain syndrome (1), functional constipation (39) and functional fecal retention (1). Thorough clinical evaluation identified 47 (19.3%) children with FGIDs. Five of the children (2.1%) identified as having FGID on QPGS were felt not to have FGID by the examining physician. Children with FGIDs were not different from healthy children in age, insurance, parent's education, employment or number of children in the family. FGIDs were more common in girls (29/47 girls, P = 0.028). Children with FGIDs tended to live in single-parent households and miss school more often than children without FGIDs (P = 0.08). CONCLUSIONS: Functional gastrointestinal disorders are common among African American children and adolescents in a primary care setting and predominantly affect girls. Symptom-based criteria are useful in the diagnosis of pediatric FGIDs.

Abdominal Pain↗
PubMed2006

Trajectories of symptoms and impairment for pediatric patients with functional abdominal pain: a 5-year longitudinal study.

OBJECTIVE: This prospective study characterizes trajectories of symptoms and impairment in pediatric patients with abdominal pain not associated with identifiable organic disease. METHOD: The Children's Somatization Inventory and the Functional Disability Inventory were administered four times over 5 years to 132 patients (6-18 years old) seen in a pediatric gastroenterology clinic. Individual trajectories were empirically grouped and correlates of trajectory group membership at baseline were evaluated. RESULTS: A model with three unique trajectories was found to adequately fit both symptom and impairment data. Two trajectories indicated relatively long-term improvement and one indicated continued high levels of symptoms and impairment. At baseline, the long-term risk group did not have the most severe pain but had significantly more anxiety, depression, lower perceived self-worth, and more negative life events. CONCLUSIONS: These results indicate that several distinct trajectories of relatively long-term outcomes may exist in children with functional abdominal pain. One trajectory indicated long-term risk for a high level of symptoms and impairment. Psychosocial correlates of long-term risk for physical symptoms and impairment, such as child-reported stress and internalizing symptoms, may be useful for treatment planning.

Abdominal Pain↗
PubMed2005

Children's appraisal and coping with pain: relation to maternal ratings of worry and restriction in family activities.

OBJECTIVE: To examine the relation of children's pain severity, perceived pain threat, and passive coping to maternal worry and family activities. METHODS: We assessed pain severity, perceived threat (conceptualized as beliefs about pain seriousness and coping ability), and coping strategies in 130 patients with chronic abdominal pain. Mothers rated the impact of the child's health on maternal worry and family activities. RESULTS: Controlling for pain severity, higher pain threat was associated with maternal reports of greater worry and limitations in family activities due to the child's health. Children's use of passive-coping strategies was not related to maternal worry or family activity limitations. CONCLUSIONS: Health care providers should assess patients' pain beliefs, correct misperceptions about pain seriousness, and help increase patients' perceived efficacy in coping with pain.

Abdominal Pain↗
PubMed2005

Testing a model of pain appraisal and coping in children with chronic abdominal pain.

This prospective study of children with recurrent abdominal pain (N=133; ages 8--15 years) used path analysis to examine relations among dispositional pain beliefs and coping styles, cognitions and behavior related to a specific pain episode, and short- and long-term outcomes. Children believing they could not reduce or accept pain appraised their episode-specific coping ability as low and reported passive coping behavior. Dispositional passive coping had direct effects on both episode-specific passive coping and long-term symptoms and disability. Accommodative coping (acceptance and self-encouragement) was associated with reduced episode-specific distress, which itself predicted reduced depressive symptoms 3 months later. Results suggest that coping-skill interventions for children with chronic pain should target reductions in passive coping and consider the potential benefits of accommodative coping strategies.

Abdominal Pain↗
PubMed2005

Chronic Abdominal Pain In Children: a Technical Report of the American Academy of Pediatrics and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.

Chronic abdominal pain, defined as long-lasting intermittent or constant abdominal pain, is a common pediatric problem encountered by primary care physicians, medical subspecialists and surgical specialists. Chronic abdominal pain in children is usually functional-that is, without objective evidence of an underlying organic disorder. The Subcommittee on Chronic Abdominal Pain of the American Academy of Pediatrics and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition has prepared this report based on a comprehensive, systematic review and rating of the medical literature. This report accompanies a clinical report based on the literature review and expert opinion. The subcommittee examined the diagnostic and therapeutic value of a medical and psychologic history, diagnostic tests, and pharmacological and behavioral therapy. The presence of alarm symptoms or signs (such as weight loss, gastrointestinal bleeding, persistent fever, chronic severe diarrhea and significant vomiting) is associated with a higher prevalence of organic disease. There was insufficient evidence to state that the nature of the abdominal pain or the presence of associated symptoms (such as anorexia, nausea, headache and joint pain) can discriminate between functional and organic disorders. Although children with chronic abdominal pain and their parents are more often anxious or depressed, the presence of anxiety, depression, behavior problems or recent negative life events does not distinguish between functional and organic abdominal pain. Most children who are brought to the primary care physician's office for chronic abdominal pain are unlikely to require diagnostic testing. Pediatric studies of therapeutic interventions were examined and found to be limited or inconclusive.

Abdominal Pain↗
PubMed2005

Chronic abdominal pain in children: a clinical report of the American Academy of Pediatrics and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.

Children and adolescents with chronic abdominal pain pose unique challenges to their caregivers. Affected children and their families experience distress and anxiety that can interfere with their ability to perform regular daily activities. Although chronic abdominal pain in children is usually attributable to a functional disorder rather than to organic disease, numerous misconceptions, insufficient knowledge among health care professionals and inadequate application of knowledge may contribute to a lack of effective management. This clinical report accompanies a technical report on childhood chronic abdominal pain and provides guidance for the clinician in the evaluation and treatment of children with chronic abdominal pain. The conclusions are based on the evidence reviewed in the technical report and on consensus achieved among subcommittee members.

Abdominal Pain↗
PubMed2005

Using the internet to provide information prescriptions.

INTRODUCTION: An information prescription is the provision of specific information to a patient on how to help manage a health problem. The Internet is being used increasingly as a source for information prescriptions, with clinicians directing patients to specific Web sites. As with any health care intervention, patients' lack of compliance is a barrier to the effectiveness of Web-based information prescriptions (WebIPs). WebIPs cannot be helpful if patients do not review the information prescribed for them. OBJECTIVE: The main objective of this study was to quantify the percentage of families who visit a Web site that was specifically prescribed by their physician. In addition, the use of an e-mail reminder was used to determine if it increases the likelihood that families will visit the prescribed Web site. Finally, barriers to accessing the prescribed Web site were identified. METHODS: Children were eligible if they presented to the pediatric gastroenterology clinic with chronic constipation and/or encopresis and their family had an active e-mail account and access to the Internet in their home. During their clinic visit, physicians instructed families to visit a Web site that provided educational information pertinent to their child's problem. Families were given a form with the Web-site address and a log-in identification number. Two days after their clinic visit, half of the families received an e-mail reminding them to visit the Web site. Families were contacted 1 week after their clinic visit to identify barriers to accessing the Web site. RESULTS: Eighty-three families participated in the study. Of the 83 families, 54 (65%) visited the prescribed Web site within 1 week of their clinic visit. Families who received e-mail reminders were significantly more likely to visit the Web site than families who did not receive an e-mail reminder (77% vs 53%). This difference could not be explained by the type or speed of Internet connection or how frequently they accessed the Internet or e-mail. The most common reasons that families cited for not accessing the Web site were "I forgot" and "I didn't have time." Few families cited technical reasons for not accessing the Web site. CONCLUSIONS: Almost two thirds of the families given a WebIP logged on to the prescribed Web site. The probability that families would access the site was increased by 45% with an e-mail reminder. Clearly, e-mail prompts improve compliance to WebIPs. As content and treatment programs continue to proliferate on the Web, it is important to identify barriers and solutions to them to improve overall compliance.

Adolescent↗