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The article discusses the regulatory approaches in the labeling claims for functional foods. Functional food is defined as one specially formulated to supply one or more dietary ingredients that can be expected to improve long-term health or to reduce the risk of chronic disease. It describes the controversy surrounding the standards and form for health claims. It provides the definition of health claims under the U.S. Food and Drug Administration's regulations.

Rumination syndrome is the effortless regurgitation of recently ingested food with subsequent reswallowing or spitting out. Dental erosion (DE) affects 2% to 5% of the population. DE is defined as loss of tooth structure by a chemical process that does not involve bacteria. Our objective was to compare the frequency of DE among children with rumination syndrome with healthy controls. We enrolled 30 patients 4 to 21 years of age diagnosed with rumination syndrome, and 30 age- and sex-matched healthy control subjects. Patients were evaluated by pediatric dentists for presence of DE with Taji et al a validated grading system. Patients with rumination were more likely to have DE (P < 0.001). Of patients with rumination syndrome, 23 (77%) had DE, compared with 4 (13%) control subjects. DEs are more frequent in patients with rumination syndrome.

Cholecystectomy rates for biliary dyskinesia in children are rising in the United States, but not in other countries. Biliary dyskinesia is a validated functional gallbladder disorder in adults, requiring biliary colic in the diagnosis. In contrast, most studies in children require upper abdominal pain, absent gallstones on ultrasound, and an abnormal gallbladder ejection fraction (GBEF) on cholecystokinin-stimulated cholescintigraphy for diagnosis. We aimed to systematically review existing literature in biliary dyskinesia in children, determine the validity and reliability of diagnostic criteria, GBEF, and to assess outcomes following cholecystectomy. We performed a systematic review following the PRISMA checklist and searched 7 databases including PubMed, Scopus, Embase, Ovid, MEDLINE, ProQuest, Web of Science, and the Cochrane library. Bibliographies of articles were screened for additional studies. Our search terms yielded 916 articles of which 28 were included. Three articles were manually added from searched references. We reviewed 31 peer-reviewed publications, all retrospective chart reviews. There was heterogeneity in diagnostic criteria and GBEF values. Outcomes after laparoscopic cholecystectomy varied from 34% to 100% success, and there was no consensus concerning factors influencing outcomes. The observational, retrospective study designs that comprised our review limited interpretation of safety and efficacy of the investigations and treatment in biliary dyskinesia in children. Symptoms of biliary dyskinesia overlapped with functional dyspepsia. There is a need for consensus on symptoms defining biliary dyskinesia, validation of testing required for diagnosis of biliary dyskinesia, and randomized controlled trials comparing medical versus surgical management in children with upper abdominal pain.

Objectives: Symptom-based diagnostic criteria have improved recognition and standardization of pediatric functional gastrointestinal disorders (FGIDs). We used Rome 3 diagnostic criteria to determine the prevalence of FGIDs in pediatric gastroenterology clinic. In the process, we developed a diagnostic questionnaire for infants and toddlers., Methods: We enrolled new patients ≤18 years referred during 19 months to a pediatric gastroenterology clinic. Subjects or parents completed a demographic survey and a the Questionnaire on Pediatric Gastrointestinal symptoms, Rome 3 Version (if ≥4 years, or a new infant-toddler questionnaire) before their appointment., Results: We acquired data from 976 subjects: 476 boys, 592 white. Of 332 subjects <4 years, 172 (52%) met diagnostic criteria for ≥1 FGIDs. Of 644 subjects ≥4 years, 486 (75%) met diagnostic criteria for ≥1 FGIDs. Thirty one (9%) subjects <4 years and 170 (26%) subjects ≥4 years met the criteria for ≥2 FGIDs. Of the total sample of subjects <4 years, common FGIDs included functional constipation (29%), infant regurgitation (13%), and cyclic vomiting syndrome (10%). Of the total sample of subjects ≥4 years, common FGIDs included irritable bowel syndrome (36%), abdominal migraine (19%), functional constipation (17%), cyclic vomiting syndrome (8%), functional abdominal pain syndrome (7%), aerophagia (7%), and functional dyspepsia (7%)., Conclusions: More than half of new pediatric gastrointestinal clinic patients met the Rome 3 criteria for ≥1 FGIDs. Satisfying the criteria may facilitate diagnosis on the first visit.

In a review of 538 children with functional constipation, we analyzed ages of presentation and onset, symptom duration, and behavioral/developmental problems. We divided the subjects into quartiles (Q1-Q4) based on age of onset. Median onset age was 2.3 years. The oldest group had the shortest symptom duration before referral at 1.8 ± 1.8 years (compared with Q3 to Q1, P = 0.039, P = 0.001, P < 0.001, respectively). Of the Q4 subjects, 22% had a behavioral/developmental problem (P < 0.001 compared with Q1-Q3). We conclude that most children develop functional constipation as infants and toddlers, but those with later onset are more likely to have behavioral/developmental issues and see a specialist sooner.

Objective: Functional gastrointestinal disorders (FGIDs) in infants and toddlers are common, but no questionnaire is available for use in clinic and research. The purpose of the present study was to develop and validate a questionnaire assessing symptoms associated with FGIDs in infants and toddlers., Methods: Questions were developed based on the Rome III diagnostic criteria for FGIDs. A group of parents of children with FGIDs and experts in FGID reviewed the questionnaire for content, understandability, and completeness (face validity). Initial content validity was established by comparing physician and questionnaire diagnoses in a group of 332 consecutive new patients at a tertiary care clinic., Results: Ten parents and 8 experts identified no major problems, indicating good face validity. Of 332 consecutive new patients, age 1 month to 4 year of age, 172 subjects (52% of the sample) qualified for a FGID by parent responses to the questionnaire (mean age = 1.23 year, 53% girls). All of these subjects also received an FGID diagnosis by their physician. Agreement between parent and doctor was fair to substantial (κ = 0.18-0.76), except for infant rumination and functional diarrhea in infants, which showed poor overlap., Conclusions: The newly developed Rome III questionnaire for infants and toddlers had good initial face and content validity. This questionnaire will be an important addition to clinical care and research of infant/toddler FGIDs. Replication of these findings in primary care is needed.

To compare disability and emotional health in individuals with irritable bowel syndrome (IBS), fibromyalgia, or both, patients completed the Questionnaire on Pediatric Gastrointestinal Symptoms-Rome III, childhood Functional Disability Inventory (FDI), and the Behavior Assessment System for Children, Second Edition. Patients' (age range 8-18 years, 19 IBS, 12 fibromyalgia, and 12 both) FDI scores showed greater disability than scores from historically healthy patients. Fibromyalgia (FDI 22.5 ± 12.7, P = 0.018) and patients with both (FDI 26.2 ± 13.8, P = 0.001) averaged greater disability than those with IBS (FDI 10.6 ± 7.9). Disability was correlated with anxiety and depression symptoms. Disability and psychological symptoms are important when evaluating individuals with fibromyalgia and IBS.

Background: After Hirschsprung disease (HD) surgery, many children experience fecal incontinence caused by increased number of high-amplitude-propagating contractions (HAPCs) through the neorectum to the anal verge. The aim of this study was to determine whether children with HD have more HAPCs than children with colon transections for reasons other than HD., Methods: We reviewed 500 colon manometries. Children (age 7.6 ± 5.1 years, 275 boys) with functional constipation (n = 237, age 7.4 ± 5.0 years, 126 boys) and chronic abdominal pain (n = 48, age 9.8 ± 5.8 years, 25 boys) served as controls compared with subjects with HD (n = 56, age 6.9 ± 4.1 years, 44 boys) and colon transection for other reasons (n = 24, age 6.1 ± 5.8 years, 12 boys). We excluded 139 subjects without HAPCs. We documented HAPCs during 1-hour fasting and 1-hour postprandial. Results are in mean ± SD., Results: During fasting, HD subjects had more HAPCs (2.2 ± 3.4/hour) versus functional constipation (0.8 ± 2.2/hour, P = 0.0004) and chronic pain (0.5 ± 1.1/hour, P = 0.001), but not more than colon transection (1.9 ± 3.2/hour, P = 1.0). HD showed more postprandial HAPCs (4.0 ± 5.4/hour) than functional constipation (1.5 ± 2.5/hour, P < 0.0001) and chronic pain (0.9 ± 1.6/hour, P < 0.0001), but not more than colon transection (2.4 ± 3.0/hour, P = 0.6). There were more HAPCs fasting and postprandial after colon transection (1.9 ± 3.2/hour and 2.4 ± 3.0/hour) than functional constipation (0.8 ± 2.2/hour, P = 0.3 and 1.5 ± 2.5/hour, P = 1.0) and chronic pain (0.5 ± 1.1/hour, P = 1.0 and 0.9 ± 1.6, P = 1.0). HD subjects were divided by chief complaint: fecal incontinence or constipation. HD subjects with incontinence (n = 23) only had more HAPCs fasting (P = 0.01) and postprandial (P = 0.01) than HD subjects with constipation (n = 28) only., Conclusions: Increased HAPCs followed colon transection, regardless of a cause. HD subjects with incontinence had more HAPCs than subjects with colon transection for other reasons.

We describe the use of psychotropic medications in the treatment of functional gastrointestinal disorders (FGIDs) in children based on available data. We address their safety and efficacy. Most pediatric gastroenterologists do not or are not able to collaborate with child psychiatrists, so it may be beneficial for pediatric gastroenterologists to have a working knowledge of off-label psychotropic drugs to improve functional symptoms. We recommend that efforts be made to involve both the children and their families from the beginning, adverse effects be mentioned, and the treatment plan be explained.

Objectives: Pediatric functional constipation is common; effective, easily administered treatment options are limited. Lubiprostone is an oral chloride channel protein-2 activator that stimulates gastrointestinal fluid secretion, softens stools, and facilitates bowel movements (BMs). We evaluated the safety and effectiveness of lubiprostone in children and adolescents with functional constipation., Methods: Patients ≥12 kg, 17 years or younger, and with <3 spontaneous BMs (SBMs; ie, BMs that did not occur within 24 hours of rescue medication use) per week were enrolled at 22 US general pediatric and pediatric gastroenterology centers (January 2007-October 2008). Patients received 4 weeks of open-label lubiprostone at doses of 12 μg once daily (QD), 12 μg twice daily (BID), or 24 μg BID based on age and weight. The primary endpoint was SBM frequency during week 1 versus baseline., Results: Of 127 enrolled patients, 124 were treated and analyzed (12 μg QD, n = 27; 12 μg BID, n = 65; 24 μg BID, n = 32), and 109 completed the study. The mean age of treated patients was 10.2 years (range 3-17 years); 65 were boys. Mean SBM frequency significantly increased compared with baseline at week 1 (3.1 vs. 1.5 SBMs/week, P < 0.0001). SBM frequency was improved significantly from baseline overall (P < 0.0001) and for individual dose groups (P ≤ 0.0062) during weeks 2, 3, and 4. Common (≥5%) adverse events included nausea (18.5%), vomiting (12.1%), diarrhea (8.1%), abdominal pain (7.3%), and headache (5.6%). Two patients experienced serious adverse events (unrelated abdominal pain; unrelated sickle cell crisis)., Conclusions: Lubiprostone was efficacious and well tolerated in children and adolescents with functional constipation.

Objectives: Irritable bowel syndrome is a multisymptom construct, with abdominal pain (AP) acting as the driving symptom of patient-reported severity. The Food and Drug Administration considers a >30% decrease in AP as satisfactory improvement, but this has not been validated in children. We investigated the correspondence of 2 measures for AP assessment, ≥30% improvement in AP and global assessment of improvement., Methods: Secondary analysis of data from 72 children who completed a randomized clinical trial for abdominal pain-associated functional gastrointestinal disorders. Children completed daily assessment of AP intensity, functional disability inventory (FDI), question regarding pain's interference with activities, and 2 global assessment questions. We measured the extent to which ≥30% improvement of AP and global assessment questions correlated with each other and with disability., Results: The global questions correlated with each other (r=0.74; P<0.0001) and with a ≥30% improvement in AP (P<0.01). Global outcomes were satisfaction with treatment was inversely related to the child's report of interference with activities (P<0.01) and symptom relief was positively associated with ≥30% improvement in FDI scores (P<0.009). A 30% change in FDI scores was associated with global questions of symptom relief (P=0.009) but not with satisfaction with treatment (P=0.07). The association of AP improvement with interference with activities (P=0.14) or change in FDI scores (P=0.27) did not reach significance., Conclusions: Currently used global assessments are significantly associated with decreased pain intensity, decreased interference with daily activities, and a ≥30% change in FDI scores, whereas recommended 30% improvement in pain intensity is not as comprehensive.

Background and Objectives: Prucalopride is a selective, high-affinity 5-HT4 receptor agonist with gastrointestinal prokinetic activities. The aim of this study was to evaluate the pharmacokinetics, efficacy, safety, and tolerability of prucalopride oral solution in children, ages 4 years or older to 12 years or younger, with functional constipation., Methods: A single oral dose of 0.03 mg/kg prucalopride was administered to 38 children to characterize prucalopride pharmacokinetics (NCT01674166). Thereafter, 37 children entered an open-label extension period in which 0.01 to 0.03 mg/kg of prucalopride was administered once per day for 8 weeks to investigate efficacy, safety, and tolerability (NCT01670669)., Results: Mean (standard deviation [SD]) Cmax, tmax, and AUC∞ (area under the plasma concentration-time curve from time 0 to infinity) were 3.8 (0.6) ng/mL, 1.8 (0.9) hour, and 65.3 (10.6) ng · h · mL, respectively, with limited (16%) variability in Cmax and AUC∞. Mean (SD) t1/2 was 19.0 (3.1) hours. On average, mean (SD) renal clearance (0.25 [0.08] L · h · kg) accounted for 54% of the apparent total plasma clearance (0.46 [0.07] L · h · kg). The apparent volume of distribution was 12.6 (2.6) L/kg. Prucalopride treatment resulted in a mean bowel movement frequency of 6.8/week, normal stool consistency, and reduced frequency of fecal incontinence. During the 8-week extension, 70% of study participants had at least 1 adverse event (all but 1 of mild/moderate intensity, 19% considered related to prucalopride). No children discontinued prucalopride because of adverse events., Conclusions: The pharmacokinetic profile of a single dose of prucalopride oral solution (0.03 mg · kg · day) generally resembled the profile in adults (2-mg tablet) but reflected lower systemic exposure in children. Prucalopride treatment for 8 weeks demonstrated an apparent favorable efficacy and tolerability profile in children with functional constipation.

Diffuse esophageal spasm (DES) causes chest pain and/or dysphagia in adults. We reviewed charts of 278 subjects 0 to 18 years of age after esophageal manometry to describe the frequency and characteristics of DES in children. Patient diagnoses included normal motility (61%), nonspecific esophageal motility disorder (20%), DES (13%, n=36), and achalasia (4%). Of patients with DES, the most common chief complaint was food refusal in subjects younger than 5 years (14/24, 58%) and chest pain in subjects older than 5 years (4/12, 33%). Comorbid medical conditions, often multiple, existed in 33 subjects. DES should be considered when young children present with food refusal.

Background and Objective: Children with functional constipation often state an inability to sense an urge to defecate and/or inability to feel incontinence. We used colon manometry to assess whether there was a sensory abnormality in patients who denied sensation., Methods: A physician observed all of the colon manometries in the preceding 20 years, and included behavioral observations in the procedure reports. We reviewed the charts of these patients., Results: Of 150 subjects with normal manometry and a diagnosis of functional constipation, 56 volunteered that they had no urge to defecate or complained of abdominal pain. For all who denied sensation, the first high-amplitude propagating colonic contraction (HAPC) was associated with retentive posturing and facial grimaces. When queried, all reported they felt nothing. The examiner explained the HAPC was causing pain, and informed the child that the pain would resolve if they defecated. With subsequent HAPCs, every patient acknowledged an urge to defecate and successfully defecated. Most agreed that a similar pain sensation was present daily, but was misinterpreted to be abdominal pain., Conclusions: Colon manometry may be useful not only for objective findings to discriminate neuromuscular disease from functional symptoms but also to understand psychological issues and aid in helping the child and family understand the maladaptive behaviors in functional constipation.

Background and Aim: Chronic abdominal pain (AP) is common in children. Recall of symptoms is used clinically to determine management, to assess treatment progress, and in drug studies to assess outcomes. Limited data exist on accuracy of AP recall in children. The aim of the present study was to assess ability to accurately recall AP in children., Methods: The study was a secondary analysis of data obtained from a double-blind, randomized, placebo-controlled trial, evaluating amitriptyline in children with functional gastrointestinal disorders. Children ages 8 to 17 years with AP predominant functional gastrointestinal disorders based on Rome II criteria were recruited from 6 centers. Those with evidence of organic disease were excluded. Patients maintained AP diary daily for 1 month (presence, frequency, and intensity). At the end of the study, patients reported the number of days of AP during previous month. Agreement between daily pain reports and recalled pain was assessed. Univariate analysis was conducted with Spearman rank correlations., Results: We recruited 63 children (45 girls, mean age 12.8 years). Sixteen percent children had perfect agreement on number of days of AP. Fifty-four percent of children recalled fewer episodes of pain. The average number of days with AP by recall was 17.7/month, whereas by diary it was 23.5/month (P = 0.001). Correlation between patient recall of the last week of symptoms (r = 0.47) was no better than correlation between recall of the last 30 days of symptoms (r = 0.48). On comparing AP recall versus various pain intensities, reported AP did not reflect only AP of greater severity. Higher correlation of recall of symptoms was seen in children 11 years or younger (r = 0.59) as compared with children older than 11 years (r = 0.26)., Conclusions: Few children can accurately recall the episodes of AP. Children commonly recall a lower frequency of AP than that assessed by prospective diary reports. Reported recall does not reflect a shorter recollection period. Recall is not related to intensity of pain. Adolescents have worse recall of symptoms.

Background and Aim: Fecal soiling is a challenging problem in some children after pull-through surgery for Hirschsprung disease (HSCR). The prevailing perception is that soiling results from overflow incontinence; however, its treatment with laxatives yields mixed results. Colonic manometry studies are reported to be normal in most patients in this population. The interpretation of these findings does not support the physiology of fecal overflow incontinence in these children. The aim of the present study was to define the physiology underlying daily, frequent fecal soiling in children after surgery for HSCR using manometric techniques., Patients and Methods: Four pediatric motility centers in the United States participated in the study; medical records and manometric tracings (anorectal and colonic) of children (n = 59; 6.5 years; 48 boys) who had pull-through surgery for HSCR and presented with daily, frequent fecal soiling were examined. Children referred for evaluation of constipation who had normal colonic manometry served as controls (n = 25; 6.7 years; 12 boys). The patients with HSCR were divided into 2 groups (Hirschsprung disease groups 1 and 2 [HD1, HD2]) based on the absence or presence of high-amplitude propagated contractions (HAPCs). A control group that included children with chronic constipation was also studied. We compared the mean HAPC frequency between the HD2 and control groups., Results: HD1 included 21 patients who had no HAPCs in fasting or postprandial periods. HD2 included 38 patients who had an average of 0.07 HPACs/min while fasting and 0.13/min in the postprandial state. In this subset the number of HAPCs in the fasting state (P = 0.04) and the postprandial state (P < 0.001) was greater when compared with controls. Additionally, there was a significant increase in HAPCs/min from the fasting to the postprandial state (P = 0.01). In the HD2 group 40% had colonic hyperactivity., Conclusions: Daily, frequent fecal soiling after pull-through surgery for HSCR may be due to colonic hyperactivity in some children. It is imperative that this unique subset be identified because the management strategy would include avoidance of laxatives, contrary to standard current practice.

The current article describes a 14-week outpatient protocol for transitioning from gastrostomy tube to oral feeding in toddlers with medical complications. The team ensured that eating skills were mastered before treating patients for 8 weeks with continuous gastrojejunal drip tube feedings and low-dose tricyclic antidepressant and/or gabapentin. We prescribed 6 weeks of megestrol for hunger provocation while withdrawing tube feedings. A chart review after treatment demonstrated 9 subjects were eating exclusively orally and 1 was eating 50% orally.

Objectives: To compare water load test consumption patterns between children with functional gastrointestinal disorders and healthy control children., Methods: Seventy-one children with recurrent abdominal pain completed the Behavioral Assessment Scale for Children-Self-Report Form and the Questionnaire on Pediatric Gastrointestinal Symptoms during their first visit to a pediatric gastroenterology clinic. Parent- and child-report functional gastrointestinal diagnoses were based on the Questionnaire on Pediatric Gastrointestinal Symptoms scoring criteria, whereas the clinician's diagnosis was based on clinical impression from history and physical examination completed at this visit. Twenty-six healthy children also participated as controls. Statistical comparisons involved Student t tests, whereas receiver operating characteristic curves estimated sensitivity/specificity of the water load test and linear regression determined the amount of variance accounted for in water volume consumption., Results: Children with recurrent abdominal pain, particularly those with a diagnosis of functional dyspepsia, consumed less water than healthy children on the water load test. The water load test demonstrated good specificity, but poor sensitivity, in identifying patients with functional dyspepsia. Clinician evaluation provided the greatest differentiation between functional gastrointestinal disorders on the water load test., Conclusions: The water load test seems to be a poor diagnostic test for functional dyspepsia because of poor sensitivity. However, future research should examine whether the water load test is identifying a subset of children with functional dyspepsia experiencing a specific mechanosensory dysfunction and whether the water load test can predict clinical response to specific therapeutic interventions.

The aim of our study was to characterize the parental perceptions of the behavioral and emotional functioning of their children and families coping with gastrointestinal motility disorders. The American Pseudo-obstruction and Hirschsprung's disease Society sponsored an educational meeting for parents of children afflicted with a variety of pediatric gastrointestinal motility disorders. During the conference, parents completed a questionnaire pertaining to the behavioral and emotional functioning of the afflicted child and other family members. Parents perceived that the child's illness was more difficult on the parents than on the affected child or their siblings. Also, parents perceived support from professionals, family, and friends increased after the children were diagnosed with pediatric gastrointestinal motility disorders. Parents worried most about the health and medical management of their afflicted child. The most common behavioral problem of the afflicted children was fear of separation, whereas the most common behavioral problem of their siblings was jealousy. The majority of referrals to mental health professionals resulted from parental emotional problems or marital discord.

Objectives: The aims of this study were to determine the electrogastrographic patterns in children with functional dyspepsia and to investigate the correlations among electrogastrogram (EGG), gastric emptying (GE), and pain severity., Methods: We studied 30 children (19 F; mean age 11.4 years) with functional dyspepsia. Electrogastrography was performed for 30 minutes fasting and for 1 hour during a GE test after ingestion of an isotope-labeled solid meal. The percent emptying was measured every 10 minutes for 1 hour after the meal. The dominant frequency of the EGG, the change in the postprandial peak power (deltaP), and percent dysrhythmia during each recording session were calculated. Specific symptoms were graded from 0 (none) to 4 (severe) by the patient., Results: Of 30 patients, 14 (47%) had slow GE, and 15 (50%) had abnormal EGG (dysrhythmia > or = 30% or deltaP < 0). GE was slow in 73% of patients with an abnormal EGG but was slow in only 20% of patients with normal EGG (P = 0.009). GE was negatively correlated with fasting bradygastria (r = -0.383, P = 0.04). Abdominal pain was the most severe dyspeptic symptom, both during fasting and after the meal. Patients with an abnormal EGG had an increased mean pain severity score (3.5 +/- 0.2 vs. 2.5 +/- 0.2, P = 0.002)., Conclusions: Sixty percent of functional dyspepsia subjects had either slow GE or abnormal EGG. Patients with abnormal EGG were more likely to have slow GE. EGG abnormalities were associated with more severe postprandial pain and should be considered a possible mechanism for dyspeptic symptoms.

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.

Background: In children with prolonged constipation of unclear pathogenesis or unresponsive to treatment, colon manometry can discriminate between functional fecal retention (FFR) and colon neuromuscular diseases., Aim: To identify the clinical features precipitating referral for colon manometry in children with functional constipation., Method: Retrospective medical record review of 173 constipated children (116 male, mean age 6.9 years, range 1-17 years) referred for colon manometry., Results: Manometry was normal in 121 (70%). In those with normal manometry, FFR was identified in 96, irritable bowel syndrome (IBS) in 10, and functional constipation in 15. Of the 96 children FFR, 72 (76%) had comorbid conditions that might have interfered with the clinician's ability to diagnose FFR. Of 52 children with colon neuromuscular disease, only 12 (23%) had comorbid conditions (P < 0.001 compared with FFR). Of children more than 4 years, those with FFR were more likely to have fecal incontinence (44 of 62; 71%) than those with other functional disorders (2 of 19; 10%; P < 0.001) or neuromuscular disease (6 of 23; 26%; P < 0.001)., Conclusions: Two thirds of children referred for colon manometry had normal studies and met criteria for a functional diagnosis. Three quarters of those with functional constipation had a comorbid condition that might alter the history sufficiently to obscure the diagnosis.

Objectives: To compare the Rome II diagnoses made in children with recurrent abdominal pain by physicians and by parent and child responses on the Questionnaire on Pediatric Gastrointestinal Symptoms. Rates of diagnostic agreement and reasons for disagreement were examined to determine whether changes to the Rome II criteria are needed to improve diagnostic classification., Methods: One hundred and forty-eight children and their parents or guardians completed the Questionnaire on Pediatric Gastrointestinal Symptoms during their first visit to a pediatric gastroenterology clinic. Parent- and child-report Rome II diagnoses were based on Questionnaire on Pediatric Gastrointestinal Symptoms scoring criteria, whereas the physician's Rome II diagnosis was based on clinical impression from history and physical examination completed at this visit. Statistical comparisons involved Pearson chi tests and Fisher exact tests. Kappa and weighted kappa measured agreement rates., Results: Most children met the criteria for a functional gastrointestinal disorder based on the Rome II criteria. Functional dyspepsia was the most common diagnosis made by all three sources. The percentage of children classified as "no diagnosis" was small and was often a function of symptom duration (especially when diagnosis rested on the child self-report). Diagnostic agreement was fair to moderate. Diagnoses based on parent and child questionnaires agreed more often on functional dyspepsia than irritable bowel syndrome. Diagnostic disagreement was most likely to result from parent and child disagreement on defecation symptoms., Conclusions: The Rome II classification system shows promise for improving diagnosis, study and treatment of children with recurrent abdominal pain. However, further refinement and clarification of the Rome II criteria for symptom duration and frequency may be needed to improve diagnostic agreement.

Objective: To document the temporal relationship between a panic attack and high amplitude propagating contractions., Methods: Colon manometry was used to discriminate between functional defecation problems and colon neuromuscular disease. By chance, the patent developed a panic attack during the test session., Results: Coincident with the panic attack, there was a continuous series of high amplitude propagating contractions. There were 15 high amplitude propagating contractions over 45 minutes, initially at a rate of 4 per 10 minutes, gradually slowing to 1.5 per 10 minutes., Conclusions: These data may explain the cause for gastrointestinal distress and diarrhea in some patients with panic attacks.

Background: In chronically ill children who refuse to eat, surgery to correct anatomic problems and behavioral treatments to overcome oral aversion often succeed. A few patients fail with standard treatments. The aims of the study were to: 1) investigate motility and gastric sensory abnormalities and 2) describe treatment that was individualized based on pathophysiology in children who failed surgery and behavioral treatments., Methods: We studied 14 patients (age 1.5-6; mean 2.5; M/F: 7/7). All had a lifelong history of food aversion and retching or vomiting persisting after feeding therapy and fundoplication. All were fed through gastrostomy or gastro-jejunostomy tubes. We studied esophageal and antroduodenal manometry, and gastric volume threshold for retching. We identified when gastric antral contractions were associated with retching and pain. A multidisciplinary treatment program included a variable combination of continuous post-pyloric feedings, drugs to decrease visceral pain, drugs for motility disorders, and behavioral, cognitive, and family therapy. We interviewed parents 2-6 months following testing to evaluate symptoms, mode of feeding and emotional health., Results: We found a motility disorder alone in 2, decreased threshold for retching alone in 5 and both motility and sensory abnormalities in 7. After treatment, 6 of 14 (43%) began eating orally and 80% had improved emotional health. Retching decreased from 15 episodes per day to an average of 1.4 per day (p <0.01)., Conclusions: Upper gastrointestinal motor and/or sensory disorders contributed to reduced quality of life for a majority of children and families with persistent feeding problems. A multidisciplinary approach improved symptoms and problems in these children

Objective: Pain-associated disability syndrome (PADS) is a recently defined term that describes patients with chronic pain whose restriction in daily activities appears disproportionately severe for the observable pathology. The aim of this study is to describe the features of a group of pediatric patients with abdominal symptoms fitting this diagnosis., Methods: To identify factors associated with visceral PADS, we reviewed the records of 40 patients (18 males; age range, 7-21 years) with gastrointestinal symptoms severe enough to prevent school attendance or eating for 2 months or more. These patients, in whom pain was neither feigned nor self-induced, met the diagnostic criteria for visceral PADS, including failure of usual treatments and lack of a satisfactory organic explanation for the severity of the pain., Results: The dominant symptom was abdominal pain in 30 patients, regurgitation in 5 patients, nausea in 3 patients, and chest pain in 2 patients. All patients complained of pain or discomfort, and all met symptom-based criteria for one or more functional gastrointestinal disorder. Disordered sleep was a problem for 39 patients. Factors associated with PADS included learning disabilities, unrealistic goals in a perfectionist, high-achieving child, early pain experiences, passive or dependent coping style, marital problems in the home, and chronic illness in a parent. All patients had at least two associated factors, and a majority had four or more associated factors. Possible triggering events included an acute febrile illness in 20 patients, school change in 11 patients, trauma in 2 patients, death of a loved one in 2 patients, and sexual abuse in 2 patients. Before diagnosis, all patients underwent extensive negative evaluations. Nearly all patients had mental health evaluations that ruled out eating disorder and psychosis. Medical management had failed, and surgeries worsened symptoms. In a majority of patients, we identified a comorbid psychiatric disorder., Conclusions: Evaluation of preteens and teens unable to go to school or eat because of unexplained incapacitating symptoms should include queries about factors associated with PADS. To treat PADS, medical and mental health clinicians must recognize pain as having both nociceptive and affective components and address treatment collaboratively. Invasive procedures and surgery reinforce the cycle of arousal and pain and are to be avoided. Age for the onset of PADS in the preteen and early teen years suggests that developmental issues play a role.

Objective: The purpose of this study was to estimate values for the water load test in healthy elementary school children., Methods: We measured the volume of water consumed by 176 children (71 boys and 105 girls) using the water load test at school. Children completed a questionnaire, which included self-efficacy and abdominal pain history. Then subjects drank water for 3 minutes or until full., Results: Children drank 630 +/- 260 ml. Water consumption correlated with age, weight, and height. Children who believed they could drink a lot, drank more than those who thought they could not, < 0.01., Conclusion: The water load test is a simple and inexpensive method to estimate onset of satiety and may be useful in future studies now that there are values for healthy children.