Profile of Helicobacter pylori infections among children in the South Island of New Zealand (2010-2021).

BACKGROUND: Helicobacter pylori is a gram-negative gut bacterium most often acquired during childhood. International guidelines state that children with suspected H. pylori infection should be referred to a gastroenterologist for investigation via gastroscopy and biopsy. Eradication therapy should be prescribed for children with peptic ulcer disease or following a treatment risk/benefit discussion for those with an incidental gastroscopy finding. Guidelines state that for children a "test-and-treat" approach is not warranted, contrasting recommendations for adults. The aim of this study was to profile pediatric H. pylori infections in the South Island of New Zealand (NZ) to determine diagnostic and management strategies, and adherence to international guidelines. MATERIALS AND METHODS: Retrospective data for positive H. pylori tests between 2010 and 2021 were retrieved from hospitals and regional testing laboratories throughout the South Island (NZ) for children ≤18 years. Outcome data were retrieved from tertiary care hospital records; sociodemographic, testing methods, eradication therapy, and symptoms. RESULTS: Two-hundred and forty children were identified: 105 (44%) male, mean age 13.2 years (SD 4.3). Participants of Pasifika, Asian, and Middle Eastern/Latin American/African heritage were overrepresented compared to the NZ census data. Overall, 138 (58%) children were diagnosed via stool antigen tests, 78 (32%) serum, and only 24 (10%) adhered to international guidelines in being confirmed via gastroscopy. Only 59 (25%) had a record of eradication therapy, and 39/59 (66%) were retested to determine eradication success, with 32 (82%) negative tests and seven (18%) remaining positive. Of the 181 (75%) that had eradication status unknown, 66 (28%) had a retest result available with 48 (73%) testing negative and 18 (27%) positive, suggesting a substantial proportion had received eradication therapy without adhering to international guidelines. CONCLUSIONS: International guidelines were not adhered to for most children in the study cohort. Implications of this include cost, unnecessary venipuncture, and unjustified antibiotic exposure.

Knowledge Levels About Inflammatory Bowel Disease Vary Between Healthcare Professional Groups.

BACKGROUND: Inflammatory Bowel Disease (IBD) is one of the most serious chronic diseases affecting the global population. Clinical team members involved in the care of individuals with IBD should have sufficient knowledge about IBD. AIMS: The study aim was to assess IBD knowledge among four health care professional groups in New Zealand: nurses, medical students, dietitians, and pharmacists. METHODS: All four groups completed surveys on demographics, work experience, and contact with patients with IBD. All completed a validated IBD knowledge assessment questionnaire (IBD-KID2), and percentage scores with standard deviation (SD) for each group calculated and compared. RESULTS: Participants included 200 nurses, 196 medical students, 45 dietitians, and 28 pharmacists. Mean IBD-KID2 percentage scores were nurses 69.7% (SD 14.7), medical students 77.6% (SD 14.5), dietitians 87.4% (SD 8.3), and pharmacists 83.4% (SD 10.1). Nurses scored lower than other HCP (P < 0.001). Independent variables were associated (P < 0.05) with higher scores for nurses having first degree relative with IBD, access to IBD guidelines, worked with children with IBD; medical students in their clinical years of study; and dietitians with IBD-specific education. Specific items scored poorly: growth, food triggers, heritability of IBD, and nutrient absorption. CONCLUSIONS: Knowledge gaps exist among HCP that may be addressed with targeted education. Improvements in the knowledge of those caring for people with IBD may optimize patient outcomes.

Systematic Review of Diagnostic Delay for Children With Inflammatory Bowel Disease.

OBJECTIVES: Pediatric inflammatory bowel disease (IBD) is a complex inflammatory condition of the gut. Diagnosing IBD involves distinct longitudinal periods from first symptoms to primary care assessment, tertiary care referral, and then endoscopic confirmation. The term diagnostic delay (DD) is used if these periods are prolonged. The aim of this review was to amalgamate DD data for children with IBD, and identify factors associated with prolonged DD. METHODS: Six health literature databases were searched (December 2020). Inclusion criteria for papers were children diagnosed with IBD before the age of 18 years, DD central tendency data, and to report a central tendency of their DD data, cohort >10 children. For analysis, all data were weighted by cohort sample size. RESULTS: Searches identified 236 papers, and 26 were included in the final analysis with a pooled cohort of 7030 children. The overall DD periods were IBD 4.5 months [Interquartile range (IQR) 3.6-8.7 months], Crohn disease (CD) 5 months (IQR 4-7.2 months), and ulcerative colitis/indeterminate colitis/IBD-unclassified (UC/IC/IBDU) 3 months (IQR 2.2-4.9 months). The difference between subtypes was significant ( P < 0.001), with shorter DD for UC/IC/IBDU than CD ( P < 0.001) and IBD ( P < 0.001). DD periods were longer for CD than IBD ( P < 0.001). DD decreased over time for IBD ( P < 0.001) and UC ( P < 0.001) but the trend suggested an increase for CD ( P 0.069). CONCLUSIONS: This data can be used to benchmark DD for children with IBD. Individual centers could determine whether improvements to awareness or infrastructure may reduce DD in order to minimize the risk of poor outcomes.

Descriptive Epidemiology of Pediatric Inflammatory Bowel Disease in Oceania: A Systematic Review and Meta-Analysis.

OBJECTIVES: Pediatric inflammatory bowel diseases (IBDs) are chronic, idiopathic illnesses of the digestive tract, which can impact adversely on children's quality of life and burden health systems. International studies have shown these diseases are increasing. The aim was to describe pediatric IBD epidemiology across Oceania by conducting a systematic review and meta-analysis of incidence and prevalence. METHODS: Medline, EMBASE and Web of Science databases were searched in October 2022 for studies reporting rates of IBD, Crohn disease (CD), or ulcerative colitis (UC) in children (≤19 years). Several data collection methodologies were included and pooled estimates of incidence and prevalence were calculated using a random effects model with I2 measures of heterogeneity. RESULTS: Nineteen articles provided 15 incidence and 7 prevalence studies. Fourteen studies were from Australia, 8 studies from New Zealand, and no studies were found from the Pacific Islands. Study dates ranged from 1950 to 2020 with 11 studies using population-based designs. Pooled estimates for annual incidence were IBD 4.1 (3.4-4.8, I2 = 98.7), CD 2.3 (1.9-2.7, I2 = 98.6), and UC 0.9 (0.6-1.1, I2 = 96.8) per 100,000 person-years. Prevalence rates were IBD 36.0 (23.5-48.5, I2 = 98.4), CD 23.2 (6.6-39.8, I2 = 97.8), and UC 7.6 (2.7-12.5, I2 = 99.6) per 100,000 persons. CONCLUSIONS: Pediatric IBD is prevalent in Oceania with high incidence rates, particularly for CD. Low rates of IBD were observed in indigenous Australian, Maori, and New Zealand Pacific children and there were no studies from the Pacific Islands highlighting this as an area in need of further research.

Co-design and Consultation Ensure Consumer Needs Are Met: Building an eHealth Platform for Children with Inflammatory Bowel Disease.

BACKGROUND: Crohn's Colitis Care is an adult inflammatory bowel disease eHealth system. Crohn's Colitis Care required additional pediatric functionality to enable life-long records and mitigate transition inadequacies. AIM: This study describes and evaluates a consensus method developed to ensure consumer needs were met. METHODS: Pediatric-specific functionality and associated resources considered important for inclusion were developed by a clinician consensus group. This group was divided into thematic subgroups and underwent two voting rounds. The content validity index was used to determine items reaching consensus. Children with inflammatory bowel disease and their parents were later shown a descriptive list of non-clinical inclusion topics proposed by the consensus group, and asked to vote on whether topic-related functionality and resources should be included. RESULTS: The consensus process consulted 189 people in total (38 clinicians, 32 children with inflammatory bowel disease and 119 parents). There was agreement across all groups to incorporate functionality and resources pertaining to quality of life, mental health, self-management, and transition readiness; however, divergence was seen for general inflammatory bowel disease facts, your inflammatory bowel disease history, and satisfaction. Cost saw the greatest disparity, being less supported by consumers compared to clinicians. Over 75% of consumers agreed it would be okay for appointments to take longer for survey completion, and > 90% thought Crohn's Colitis Care should allow consumers to ask their treating team questions. CONCLUSIONS: Widespread consumer co-design and consultation were important in unveiling differing perspectives to ensure Crohn's Colitis Care was built to support both consumer and clinician perspectives. Consumers collaborate to create a list of functionality and resources to be included in software (left), influencing the final product build (right).

Children With Cystic Fibrosis Have Elevated Levels of Fecal Chitinase-3-like-1.

Although chitinase-3-like-1 (CHI3L1), predominately produced by epithelial cells and macrophages, is relevant to pulmonary disease in cystic fibrosis (CF), fecal levels have not yet been assessed in children with CF. Fecal CHI3L1 was measured with a commercial immunoassay using fecal samples provided by children with CF and healthy control (HC) children. Higher median (interquartile range) fecal CHI3L1 levels were seen in the 52 children with CF than in the 35 controls: 15.97 (3.34-50.53) ng/g versus 2.93 (2.13-9.27) ng/g ( P = 0.001). Fecal CHI3LI did not differ according to sex. In the children with CF, fecal CHI3L1 levels did not correlate with growth parameters nor were the levels affected by pancreatic insufficiency. Children with CF had higher fecal CHI3L1 levels, suggesting underlying gut inflammation. Further work is required to confirm the current findings and to ascertain the longer-term significance of elevated CHI3L1.

A Short Knowledge Assessment Tool Is Valid and Acceptable for Adults with Inflammatory Bowel Disease.

BACKGROUND: For people with inflammatory bowel disease, validated knowledge questionnaires are valuable to identify gaps in understanding and explore the impact on disease variables. AIMS: The aim of this study was to validate the short knowledge questionnaire Inflammatory Bowel Disease Knowledge Inventory Device 2, known as IBD-KID2, for use with adults with inflammatory bowel disease. METHODS: Concurrent validity of IBD-KID2 was assessed by comparing scores with those achieved on the Crohn's and Colitis Knowledge Score (CCKNOW). IBD-KID2 reliability was assessed with test-retest completion at two time points, generalizability assessed by comparing IBD-KID2 cohort scores at different recruitment centres, and acceptability assessed using participant survey. RESULTS: Seventy-five adults with inflammatory bowel disease completed the study. The mean percentage scores achieved on the IBD-KID2 and CCKNOW were 72.8% (SD 16.0) and 49.7% (SD 18.2), respectively. There was a significant correlation between IBD-KID2 and CCKNOW scores (R 0.573, P < 0.005), confirming concurrent validity. IBD-KID2 reliability was confirmed as no significant difference was seen between scores at test and retest (mean difference -0.2, P = 0.92). Generalizability was established as no significant score difference was seen between recruitment centres after controlling for population differences. The acceptability survey showed that 49 (69%) participants preferred IBD-KID2 to the CCKNOW, 60 (85%) found the IBD-KID2 easier to complete, and 38 (53%) considered the CCKNOW as most suitable for adults. CONCLUSIONS: IBD-KID2 is a valid, reliable, and generalizable tool for measuring knowledge in adults with inflammatory bowel disease with good acceptability. IBD-KID2 is easy and quick to complete, hence limiting respondent burden.

Australasian Pediatric Gastroenterologists' Perspectives and Practices of Celiac Disease Diagnosis and Management.

BACKGROUND: The application of the European Society for Paediatric Gastroenterology Hepatology and Nutrition (ESPGHAN) celiac disease (CeD) guidelines by pediatric gastroenterologists in Australia and New Zealand (Australasia) is unknown. Similarly, long-term management practices for patients with CeD are also unknown in this region. AIMS: This study aimed to explore the perceptions and practices of Australasian pediatric gastroenterologists in diagnosing and managing patients with CeD. METHODS: Australasian pediatric gastroenterologists and trainees were invited to complete an anonymous online survey over a 3-week period. RESULTS: The survey was completed by 28 respondents, 24 from Australia and four from New Zealand. Tissue transglutaminase antibody IgA was the most frequently ordered initial serologic test. Fifteen (54%) respondents relied on duodenal biopsies for the confirmation of CeD, six (21%) followed the ESPGHAN guidelines and the remaining seven offered either biopsy confirmation or no-biopsy diagnosis according to the parents' wishes. Following diagnosis, five (18%) respondents discharged patients from care, three (11%) discharged patients after one follow-up visit, one (4%) reviewed patients for 12 months, six (21%) reviewed patients until celiac antibodies normalized and children were clinically asymptomatic, and 13 (46%) reviewed patients until transition to adult care. CONCLUSION: Tissue transglutaminase antibody IgA was the most common initial serologic test ordered by this group of Australasian pediatric gastroenterologists. Half of these physicians rely solely on duodenal biopsy for the confirmation of CeD diagnosis: a minority routinely use the ESPGHAN guidelines. Physicians reported a wide range of CeD follow-up practices.

Patient perceptions of current and potential inflammatory bowel disease diagnostic and monitoring tests.

BACKGROUND: Less invasive inflammatory bowel disease (IBD) tests are increasingly being incorporated into clinical practice as adjuncts to endoscopy to monitor disease activity and guide optimal care. Little is known about patient perspectives of these tests. AIMS: To assess patient perspectives of the current IBD tests and potential future tests, such as saliva, urine or breath. METHODS: New Zealand adults with IBD were invited to complete an anonymous online survey. Experiences relating to blood or faecal tests, medical imaging (abdominal ultrasound, abdominal computed tomography and magnetic resonance enterography) and colonoscopy were collected. RESULTS: Of the 117 completed surveys, 112 respondents provided background details. The majority (85%) of participants were female and 88% were aged <55 years with a mean disease duration of 8.98 years. General blood tests were reported as the most prescribed, completed, comfortable test and the least worrying test results. Imaging tests were reported as the least ordered and the most refused tests. Colonoscopy was rated as the least comfortable and generated the most worry. Test explanations by a referring clinician significantly impacted on respondents' levels of understanding across all tests, but did not affect the level of worry when receiving test results. Saliva, blood and breath tests were chosen as the most preferred disease monitoring tests. CONCLUSIONS: Patients with IBD preferred any tests less invasive than colonoscopy. An explanation by referring doctor enhanced patients' understanding, but did not necessarily influence their level of comfort or worry.

Australasian paediatric gastroenterologist practices of coeliac disease diagnosis before and during the COVID-19 pandemic.

AIM: To explore the perceptions and practices of Australasian paediatric gastroenterologists in diagnosing coeliac disease (CD) before and during the COVID-19 pandemic. METHODS: Paediatric gastroenterologists in Australasia were invited via email to complete an anonymous online questionnaire over a 2-week period in 2021. RESULTS: The questionnaire was completed by 39 respondents: 33 from Australia and six from New Zealand (NZ) equating to a 66% response rate. Thirty-four (87%) of the 39 respondents reported they currently practised non-biopsy diagnosis of CD in eligible children, while the rest diagnosed CD using biopsy confirmation only. All NZ respondents practised non-biopsy CD diagnosis. A majority of responders (76%) who practised non-biopsy CD diagnosis followed the 2020 European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) guidelines. Twenty-two (56%) respondents reported that they started using a non-biopsy CD diagnosis protocol before the pandemic and did not change their practice during the pandemic, 10 (26%) started diagnosing non-biopsy CD during the pandemic, 5 (13%) stated their practices of CD were not impacted by the pandemic and 2 (5%) did not respond on whether the pandemic changed their practice. CONCLUSION: The majority of Australasian gastroenterologist respondents reported they routinely utilised the 2020 ESPGHAN diagnostic criteria in eligible children; half of them started prior to the pandemic and another quarter started this approach due to the pandemic. A minority of practitioners routinely rely only on biopsy confirmation to diagnose CD.

Serum Vitamin D Levels and Risk of Liver Cancer: A Systematic Review and Dose-Response Meta-Analysis of Cohort Studies.

Data regarding the relationship between serum vitamin D levels and the risk of liver cancer are conflicting. Therefore, we performed a systematic review and dose-response meta-analysis of all available data of cohort studies on the association of 25-OH-vitamin-D levels with the risk of hepatocellular carcinoma. We conducted a systematic search in PubMed-MEDLINE, Scopus, Cochrane and Web of Science databases for prospective observational studies conducted on the general population from inception to May 2019. Six studies provided data from 6357 participants. According to the pooled HR, the subjects with the highest serum concentrations of vitamin D had a 47% lower risk of liver cancer vs. the subjects with the lowest serum concentrations of vitamin D (pooled HR: 0.53, 95% CI: 0.41-0.68; P < 0.001). There was no significant heterogeneity among the studies (P = 0.431, I2 = 0.0). The pooled HR from the random-effects dose-response model indicated an indirect significant linear association between vitamin D and the risk of liver cancer (coef = -0.017, P < 0.001). However, there was no significant nonlinear dose-response association between serum vitamin D and the risk of liver cancer (coef = -0.0001, P = 0.342). The evidence from this meta-analysis suggests that there may be an inverse relationship between serum vitamin D levels and the risk of liver cancer.

Development and Validation of a Self-management Skills Assessment Tool for Children With Inflammatory Bowel Disease: The Inflammatory Bowel Disease-Skills Tasks and Abilities Record (IBD-STAR).

OBJECTIVES: For children with inflammatory bowel disease (IBD), the development of self-management skills has the potential to improve disease outcomes. No assessment tools are aimed at measuring self-management skills in this population. A tool was developed called the IBD-Skills Tasks and Abilities Record (IBD-STAR) which measures children's allocation of responsibility for specific skills. IBD-STAR contains 18 items, scored whether completed independently (score 2), with help (score 1) or not at all (score 0). METHODS: Children with IBD completed IBD-STAR; one parent and a gastroenterologist completed a series of visual analogue scales that corresponded with each IBD-STAR section. Children's IBD-STAR scores were examined against independent variables and compared with the parent and clinician visual analogue scale scores. Reliability was calculated using Cronbach's alpha. RESULTS: Twenty-five Cronbach's alpha with IBD participated, mean age 14 years (standard deviation (SD) 1.7), 14 (56%) were boys, and 21 (84%) had Crohn's disease. The mean IBD-STAR score was 27.1 (SD 5.7), equivalent to a score of 75%. Age was the only independent variable significantly associated with scores (P = 0.017). Parents consistently underestimated their children in all sections, but clinician assessments were more closely aligned. Reliability for IBD-STAR was good with an overall Cronbach's alpha of 0.84. CONCLUSION: IBD-STAR reports the allocation of responsibility for self-management skills with good agreement between children and clinician, and with comprehensible differences with their parents. Such a tool may be used to identify children with IBD in need of support or to measure the efficacy of targeted interventions.

Paediatric eosinophilic oesophagitis in New Zealand: A 3-year prospective study.

AIM: Eosinophilic oesophagitis (EoE) is a rare, chronic, relapsing immune/antigen-mediated disease characterised by symptoms of oesophageal dysfunction, with a paucity of data among New Zealand (NZ) children. This 3-year prospective study aimed to characterise EoE diagnosed nationally and to describe initial treatment strategies adopted. METHODS: Information on new diagnoses of paediatric EoE was obtained via the New Zealand Paediatric Surveillance Unit, through monthly questionnaires. RESULTS: From February 2014 to January 2017, 73 new cases (74% male) of EoE were reported, including 74% NZ European, 10% Asian, 7% Maori, 5% Middle-Eastern and 3% Pacific peoples. Median age of symptom onset was 4 years; dysphagia (48%) was the most common, followed by vomiting/regurgitation (40%), food impaction (19%) and epigastric pain (16%). A co-morbid history of other allergic conditions was present in 62% of patients, and 41% had a first degree relative with atopy. Seventy-nine percent of patients had abnormal endoscopic findings, most commonly linear furrows and white plaques; none had strictures. Median eosinophil count per high-powered field was 40 and 50 in the mid and distal oesophagus, respectively. Fifty-four percent of patients were initially managed with dietary manipulation alone (four required elemental feeds, five nasogastric tubes). Fifty-four percent of patients were treated with swallowed corticosteroids and 7% with prednisone. One patient was also treated with a leukotriene receptor antagonist. CONCLUSION: This first prospective study on paediatric patients with EoE in NZ finds similar demographics and disease characteristics as in other populations despite our unique ethnic population. Long-term prospective observational data should significantly improve our knowledge of this rare condition.

Association of aspirin therapy with risk of hepatocellular carcinoma: A systematic review and dose-response analysis of cohort studies with 2.5 million participants.

Although aspirin is commonly used for the prevention of cardiovascular disease, evidence from research has shown that these beneficial effects might extend to hepatocellular carcinoma (HCC). This dose-response analysis was performed to investigate the association between aspirin use and risk of HCC. A systematic search was conducted in MEDLINE/PubMed, SCOPUS, Cochrane, and Web of Science databases from inception up to 29th October 2019. DerSimonian and Laird Random-effects model was used to estimate pooled hazard ratios (HRs) from included studies. Overall, eight studies containing 2,604,319 participants evaluating the association between aspirin use and risk of HCC were uncovered and included in the present meta-analysis. Pooled results of included studies showed a significant reduction in risk of HCC in participants who used aspirin (HR 0.59, 95 % CI 0.47-0.75, Pheterogeneity = 0.001, I2 = 90 %). In total, 13,636 cases of HCC detected during the follow-up period of these studies. Furthermore, linear dose-response model showed an significant inverse association between aspirin dose and risk of HCC (exp (b) = 0.994, p < 0.001), while non-linear dose-response analysis revealed an even more robust association (Coef1=-0.008, p1 = 0.04, Coef2 = 0.033, p2 = 0.13). This systematic review and dose-response analysis identified significant inverse relation between aspirin and risk of HCC using both linear and non-linear models.

Fecal Markers of Inflammation and Disease Activity in Pediatric Crohn Disease: Results from the ImageKids Study.

BACKGROUND: Noninvasive and accurate methods to monitor inflammatory bowel disease are required. As a planned ancillary study of the prospective ImageKids cohort, we aimed to assess the performance of fecal calprotectin (FC) with comparison to 3 fecal inflammatory markers; S100A12 (FA12), tumor pyruvate kinase isoenzyme type M2 (FM2PK) and fecal osteoprotegerin (FOPG) as indicators of a number of disease characteristics. METHODS: The ImageKids study was a multicenter study designed to develop 2 magnetic resonance enterography-based measures for children with Crohn disease (6-18 years old). All patients underwent magnetic resonance enterography, a complete ileocolonoscopic evaluation and provided a fecal sample. Fecal samples were assay for FC, FA12, FM2PK, and FOPG by ELISA. RESULTS: One-hundred fifty-six children provided 190 fecal samples. Median (interquartile range) for fecal makers were FC, 602 (181-1185) µg/g; FA12, 21 (3-109) µg/g; FM2PK, 16 (2-20) U/mL; and FOPG, 125 (125-312) µg/g. All markers correlated with simple endoscopic severity index for Crohn disease and with other constructs of disease activity, but FC had the highest overall correlations. FA12, however, predicted mucosal healing with significantly higher specificity (87% vs 70%, P = 0.004) and equivalent sensitivity (91% vs 90%) compared to FC. CONCLUSION: This study has confirmed that FC is useful, and overall best, marker to monitor mucosal inflammation in inflammatory bowel disease. FA12, however, appears to be a more suitable maker for prediction of mucosal healing in children.

The Role of Gastrointestinal-Related Fatty Acid-Binding Proteins as Biomarkers in Gastrointestinal Diseases.

The fatty acid-binding proteins play a major role in intracellular transportation of long-chain fatty acids. Nine fatty acid-binding proteins have been identified, with each having individual tissue-specific functions in addition to regulation of fatty acids. This review focuses on the three fatty acid-binding proteins found in the gastrointestinal tract and discusses their role as diagnostic or disease monitoring markers in neonatal necrotizing enterocolitis, acute mesenteric ischemia, celiac disease, and inflammatory bowel disease. Of these three fatty acid-binding proteins, intestinal fatty acid-binding protein is of the most interest due to its exclusive expression in the gastrointestinal tract. The elevation of intestinal fatty acid-binding protein in blood and urine reflects enterocyte damage, regardless of the underlying cause. The short half-life of intestinal fatty acid-binding protein also means it is a relatively sensitive marker. In contrast, there is currently less evidence to support liver fatty acid-binding protein and ileal bile acid-binding protein as sensitive biomarkers in these conditions. More extensive studies with specific endpoints are required to validate the roles of these fatty acid-binding proteins in gastrointestinal diseases.

Identification and diagnosis of Crohn disease and ulcerative colitis in children.

Crohn disease and ulcerative colitis are the two main types of inflammatory bowel disease. High rates of these conditions are seen in Australasian children - furthermore, increasing rates have been evident in recent years. Children can present with typical symptoms of abdominal pain, diarrhoea, haematochezia and/or weight loss. Atypical presentations (such as skin lesions or isolated short stature) can also occur: these may be associated with delays in the consideration and diagnosis of IBD. Initial steps in establishing a diagnosis of IBD include delineation of inflammatory markers exclusion of any other likely aetiology. Definitive diagnosis relies upon key endoscopic, histologic and radiological findings. Overall management of IBD encompasses care within a team-based, child and family-focused, multi-disciplinary setting.

Primary intestinal lymphangiectasia in children: A review.

Primary intestinal lymphangiectasia is an uncommon condition that usually presents early in childhood. This incurable condition is consequent to underlying lymphatic abnormalities that lead to loss of lymphatic contents into the intestinal lumen. This article outlines an approach to the assessment of children presenting with characteristic features and consideration of other conditions that could lead to enteric protein loss. An overview of the management of primary intestinal lymphangiectasia is outlined.

Role of serological tests in the diagnosis of coeliac disease in children in New Zealand.

AIM: To circumvent the need for an endoscopic biopsy to establish the diagnosis of coeliac disease (CD), the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) introduced a non-biopsy pathway for selected children in 2012. This pathway was recently updated to utilise anti-tissue transglutaminase IgA (anti-TTG IgA), 10× upper limit of normal (ULN) and positive endomysial antibodies (EMA). This study focused on the retrospective application of these guidelines in children from two regions of New Zealand. METHODS: Children aged <18 years who had anti-TTG IgA measured and underwent oesophagogastroduodenoscopy over a 30-month period were identified retrospectively. Medical records were reviewed to determine whether patients subsequently had biopsy-proven CD (Marsh ≥2). RESULTS: One hundred and thirty-six children, with a mean age (±standard deviation) of 9.9 ± 4.2 years, fulfilled the study criteria and 101 (74%) of these children had positive anti-TTG IgA. Eighty-two of 136 (60%) children had biopsy-proven CD. Positive anti-TTG IgA and EMA were highly sensitive in diagnosing CD, 96.3 and 98.6%, respectively. Anti-TTG-IgA ≥10× ULN alone, and combined anti-TTG IgA ≥10× ULN with positive EMA, both provided positive predictive values of 100% in diagnosing CD. Nineteen of 103 (18%) children could have been diagnosed with CD based on the ESPGHAN non-biopsy criteria. CONCLUSION: A proportion of New Zealand children with CD can potentially be diagnosed using the latest ESPGHAN non-biopsy criteria. However, prospective studies are required to validate this conclusion.

Response pattern analysis of IBD-KID: A knowledge assessment tool for children with inflammatory bowel disease.

AIM: Paediatric inflammatory bowel disease (IBD) is a chronic relapsing condition requiring adherence to complex treatment regimens to achieve best outcomes. Adherence is frequently low in this population but can be improved by increasing disease- and treatment-related knowledge. The IBD-knowledge inventory device (IBD-KID) is a knowledge assessment tool specifically developed and validated for children with IBD. To analyse IBD-KID participant response patterns in order to review the strength of the tool. METHODS: A cohort of children with IBD completed IBD-KID, and their responses were used to assess the tool's validity and feasibility. Item response analysis assessed the item difficulty and the ability of items to discriminate between high/low scorers. The analysis considered item structure, readability and the effectiveness of multiple choice items. RESULTS: A total of 105 completed IBD-KID assessments showed that 12 items (52%) had an acceptable difficulty level, and 17 (74%) were effective at discriminating between high/low scorers. Nine (61%) had good readability, but comprehension levels ranged from 5 to 18 years. Seven (30%) had elevated 'don't know' responses, highlighting the need for content and construction review. Of the 10 multiple choice items, 9 were complex and not functioning efficiently. Internal consistency was acceptable but could be improved by removing two items. CONCLUSIONS: The response analysis metrics were reviewed by an expert panel and provided a framework for IBD-KID improvements with the aim of increasing discrimination and reducing difficulty without adversely affecting reliability. The proposed revisions will address components that may have caused children to answer incorrectly due to confusion rather than lack of knowledge.