Evaluation of the SUCCESS health literacy app for Australian adults with chronic kidney disease: Study protocol for a pragmatic randomised controlled trial (Preprint)

Background

We developed a smartphone app—the SUCCESS (Supporting Culturally and Linguistically Diverse CKD Patients to Engage in Shared Decision-Making Successfully) app—to support Australian adults with kidney failure undertaking dialysis to actively participate in self-management and decision-making. The content of the SUCCESS app was informed by a theoretical model of health literacy that recognizes the importance of reducing the complexity of health information as well as providing skills necessary to access, understand, and act on this information.

Objective

The purpose of this study is to investigate the efficacy of the SUCCESS app intervention.

Methods

We designed a multicenter pragmatic randomized controlled trial to compare the SUCCESS app plus usual care (intervention) to usual care alone (control). A total of 384 participants receiving in-center or home-based hemodialysis or peritoneal dialysis will be recruited from six local health districts in the Greater Sydney region, New South Wales, Australia. To avoid intervention contamination, a pragmatic randomization approach will be used for participants undergoing in-center dialysis, in which randomization will be based on the days they receive hemodialysis and by center (ie, Monday, Wednesday, and Friday or Tuesday, Thursday, and Saturday). Participants undergoing home-based dialysis will be individually randomized centrally using simple randomization and two stratification factors: language spoken at home and research site. Consenting participants will be invited to use the SUCCESS app for 12 months. The primary endpoints, which will be assessed after 3, 6, and 12 months of app usage, are health literacy skills, evaluated using the Health Literacy Questionnaire; decision self-efficacy, evaluated using the Decision Self-Efficacy Scale; and rates of unscheduled health encounters. Secondary outcomes include patient-reported outcomes (ie, quality of life, evaluated with the 5-level EQ-5D; knowledge; confidence; health behavior; and self-management) and clinical outcomes (ie, symptom burden, evaluated with the Palliative care Outcome Scale–Renal; nutritional status, evaluated with the Patient-Generated Subjective Global Assessment; and intradialytic weight gain). App engagement will be determined via app analytics. All analyses will be undertaken using an intention-to-treat approach comparing the intervention and usual care arms.

Results

The study has been approved by Nepean Blue Mountains Human Research Ethics Committee (2020/ETH00910) and recruitment has begun at nine sites. We expect to finalize data collection by 2023 and publish the manuscript by 2024.

Conclusions

Enhancing health literacy skills for patients undergoing hemodialysis is an important endeavor, given the association between poor health literacy and poor health outcomes, especially among culturally diverse groups. The findings from this trial will be published in peer-reviewed journals and disseminated at conferences, and updates will be shared with partners, including participating local health districts, Kidney Health Australia, and consumers. The SUCCESS app will continue to be available to all participants following trial completion.

Trial Registration

Australia New Zealand Clinical Trials Registry (ANZCTR) ACTRN12621000235808; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=380754&isReview=true

International Registered Report Identifier (IRRID)

DERR1-10.2196/39909

Pseudoangiomatous stromal hyperplasia causing massive unilateral breast enlargement-a case report

Background

Pseudoangiomatous stromal hyperplasia (PASH) is an uncommon mesenchymal benign breast neoplasm. PASH may present as a rapidly growing mass in pre-menopausal women. It is important to rule out other causes of a breast lump including fibroadenoma, hamartoma, phyllodes tumour and invasive adenocarcinoma. To our knowledge this is the largest case of PASH tumour in the English literature and the first to be managed with mastectomy and immediate breast implant reconstruction.

Case Description

A 45-year-old woman with a history of bilateral breast augmentation for cosmesis and no other co-morbidities, presented with gross asymmetry between her right and left breasts on 13th December 2020. She complained about pain and the noticeable difference in clothing. She underwent triple assessment (history and examination, imaging, and biopsy). Bilateral mammograms showed the right breast had a possible mass. On ultrasound imaging there was evidence of extensive ill-defined hypoechoic changes. Core biopsies and a vacuum assisted core biopsy were taken from the mass and came back as PASH/fibrocystic change on 12th January 2021. Surgical options were discussed, and after some consideration she decided on mastectomy and immediate implant reconstruction on 15th March 2021. She underwent the operation on 9th September 2021 and the specimen weight was 1.911 kg and measured 27 cm × 22.6 cm × 7.4 cm which is the largest reported PASH tumour. She made an uncomplicated recovery and was seen in clinic 4 weeks later and was happy with the cosmetic outcome. PASH can present as incidental microscopic foci in biopsies to diffuse enlargement of the breast. PASH has no specific radiological or diagnostic features, therefore is diagnosed based on histology. PASH is not associated with an increased risk of malignancy and the management is dependent on the presentation. When PASH is discovered incidentally or is asymptomatic it can be followed up with serial mammography to assess growth. If there are any suspicious features or discordance following triple assessment or symptoms such as discomfort surgical excision is indicated.

Conclusions

PASH should be considered as part of the differential diagnosis for rapid breast enlargement. Treatment options should be discussed early with the patient to prevent progression. For rapid breast enlargement mastectomy and immediate reconstruction should be considered and discussed with the patient.

Implementation of an organisational wide approach to improving policy documents using plain language: a case study

The impact of poorly written policies in healthcare is enormous, with the potential for significant economic and personal costs. Our local health district embarked on a major revision of policy document development that sought to reframe the process of policy development using health literacy principles. This included mandatory policy development changes that require policy to be written in plain language, at a readability level of grade 10-12. Staff training in plain language writing was undertaken. Consumer and staff feedback was incorporated in policy development. Four elements were critical to this process: effective leadership, effective instruction, practical support, and evidence-driven decisions. Staff responses to the revised processes were overwhelmingly positive and resulted in improved policy readability. The involvement of consumers in policy development has evolved. From this study, we have learned how to improve the governance of policy documents. It is possible for health literacy principles to be embedded in the development and revision of these documents.

Physical activity and exercise recommendations for people receiving dialysis: A scoping review

INTRODUCTION

Remaining physically active is important to patients undertaking dialysis, however, clinical recommendations regarding exercise type, timing, intensity, and safety precautions vary. The purpose of this scoping review was to analyse and summarise recommendations for physical activity and exercise for people undertaking dialysis and identify areas that require further research or clarification.

MATERIALS AND METHODS

A scoping review of literature from five bibliographic databases (Medline, Scopus, Web of Science, CINAHL, and SPORTDiscus) was conducted. Eligible articles included consensus guidelines, position statements, reviews, or clinical practice guidelines that included specific physical activity and exercise recommendations for people undertaking dialysis. Key search terms included "kidney disease" OR "kidney failure" OR "chronic kidney disease" OR "end stage kidney disease" AND guideline* OR consensus OR "position statement" OR prescription OR statement AND exercise OR "physical activity". Hand searching for relevant articles in all first twenty quartile 1 journals listed on SCImago under 'medicine-nephrology' and 'physical therapy, sports therapy and rehabilitation' using the terms 'exercise and dialysis' was undertaken. Finally, home pages of key societies and professional organisations in the field of sports medicine and nephrology were searched.

RESULTS

The systematic search strategy identified 19 articles met the inclusion criteria. Two were specific to pediatric dialysis and three to peritoneal dialysis. Whilst many publications provided recommendations on aerobic exercise, progressive resistance training and flexibility, few provided explicit guidance. Recommendations for the intensity, duration and frequency of aerobic and resistance training varied. Discrepancies or gaps in guidance about precautions, contraindications, termination criteria, progression, and access site precautions were also apparent.

CONCLUSION

Future guidelines should include specific guidance regarding physical activity, safety precautions, and timing and intensity of exercise for individuals who undertake dialysis. Collaborative multidisciplinary guideline development and appropriate exercise counselling may lead to increased participation in physical activity and exercise and facilitate better patient outcomes.

Diet in the management of non-dialysis dependent chronic kidney disease: perceptions and practices of health professionals

Background

Therapeutic strategies, including dietary intervention, to target non-dialysis dependent Chronic Kidney Disease (CKD) progression have been at the forefront of recent renal research. Nephrologists and other renal health professionals are key stakeholders in the dietary management of patients with non-dialysis dependent CKD and referrals to dietetic services. The aims of this study were to explore (i) health professional perceptions regarding the role of diet in managing non-dialysis dependent CKD, and (ii) health professional practices regarding the provision of dietary advice and referrals to dietetic services.

Methods

A 31-item online survey was emailed to members of professional renal networks and associations in Australia and New Zealand. Data was analysed descriptively. Categorical variables were assessed to determine associations between referral frequency, demographic variables, health professional role (non-dietetic versus dietetic) and perceptions of the role of diet.

Results

Overall, 189 health professionals completed the survey. Nephrologists (42%), renal nurses (29%) and renal dietitians (24%) were the most common respondents. Non-dietetic health professionals rated the importance of diet in the management of non-dialysis dependent CKD significantly lower than renal dietitians (73% versus 98% ranked as very-extremely important, p = 0.002). Fifty percent of non-dietetic health professionals referred patients to renal dietetic services never or 0–25% of the time. Reasons for not referring included perceptions there is a lack of evidence that diet reduces CKD progression, perceptions that patients will not adhere to dietary recommendations, and a desire to reduce visit burden for patients. Barriers to accessing dietetic services were perceived to be significant and include lengthy wait times and inadequate dietetic staffing.

Conclusion

Inconsistencies exist between non-dietetic health professionals and dietitians regarding the importance of diet in non-dialysis dependent CKD. Referral practices appear to be influenced by beliefs about the evidence base and perceptions regarding the ability of dietitians to meet referral demand. Raising awareness for non-dietetic health professionals working in nephrology regarding the evidence on diet and CKD progression is needed. An improved understanding of this evidence base may improve knowledge and referral patterns. Further, an increase in renal dietetic staffing is recommended to enhance patient access to services.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12882-022-02790-y.

Patient-Reported Outcome and Experience Measures Administered by Dietitians in the Outpatient Setting: Systematic Review

Understanding how patients perceive their health and the experience with the dietitian is fundamental to providing patient-centred care. The types of patient reported measures (PRMs) used by outpatient dietitians is unclear. Guidance about use of PRMs for dietitians is also lacking. The aim of this systematic review was to synthesise evidence regarding the use of PRMs by dietitians in the outpatient setting and evaluate the methodological quality of studies evaluating the psychometric properties of PRMs. Eight databases were searched systematically for studies of dietitians working in the outpatient setting and administering a PRM. Forty-four studies were evaluated and described 58 different PRMs. These included direct nutrition related (n = 12 studies), clinical (n = 21 studies), and health-related quality of life PRMs (n = 24 studies); 1 study documented use of a patient-reported experience measure. A large range of PRMs are used by outpatient dietitians. Of the most common PRMs, the majority are administered in similar populations to the original validation study. Dietitians should use a combination of 3 PRMs: a generic health-related quality of life tool, an experience measure, and at least 1 clinical or direct nutrition-related measure. This will enable dietitians to fully capture the impact of their care on patients.

Neurobiological effects of a probiotic-supplemented diet in chronically stressed male Long-Evans rats: Evidence of enhanced resilience

Probiotics that regulate the microbiome-gut-brain axis and provide mental health benefits to the host are referred to as psychobiotics. Preclinical studies have demonstrated psychobiotic effects on early life stress-induced anxiety- and depression-related behavior in rodents; however, the specific mechanisms remain ill-defined. In the current study, we investigated the effects of probiotic supplementation on neurobiological responses to chronic stress in adult male Long-Evans rats. Twenty-four rats were randomly assigned to probiotic (PB) or vehicle control (VEH) groups, then to either chronic unpredictable stress (CUS) or no-stress control (CON) conditions within each group (n = 6/subgroup). We hypothesized that PB supplementation would reduce markers of anxiety and enhance emotional resilience, especially in the CUS animals. In the cognitive uncertainty task, a nonsignificant trend was observed indicating that the PB-supplemented animals spent more time oriented toward the food reward than VEH animals. In the open-field task, CUS-PB animals spent more time in the center of the arena than CUS-VEH animals, an effect not observed between the two CON groups. In the swim task, the PB animals, regardless of stress assignment, exhibited increased floating, suggesting a conserved response in a challenging context. Focusing on the endocrine measures, higher dehydroepiandrosterone (DHEA)-to-corticosterone fecal metabolite ratios, a correlate of emotional resilience, were observed in PB animals. Further, PB animals exhibited reduced microglia immunoreactivity in the basolateral amygdala, possibly indicating a neuroprotective effect of PB supplements in this rodent model. These results provide evidence that PB supplementation interacts with stress exposure to influence adaptive responses associated with endocrine, neural, and behavioral indices of anxiety.

Physical activity and exercise in peritoneal dialysis: International Society for Peritoneal Dialysis and the Global Renal Exercise Network practice recommendations

Life participation requiring physical activity and physical function is a key patient-reported outcome for people receiving peritoneal dialysis (PD). Clinician guidance is required from multidisciplinary sources regarding exercise and activity advice to address the specific needs of this group. From August 2020 through to June 2021, the Global Renal Exercise Network and the International Society for Peritoneal Dialysis reviewed the published literature and international clinical experience to develop a set of clinical practice points. A set of questions relevant to physical activity and exercise were developed from the perspective of a person receiving PD and were the basis for the practice point development. The GRADE framework was used to evaluate the quality of evidence and to guide clinical practice points. The review of the literature found sparse quality evidence, and thus the clinical practice points are generally based on the expert consensus of people receiving PD, PD exercise expert clinicians and experienced PD exercise researchers. Clinical practice points address timing of exercise and activity (post-catheter insertion, peritoneal space empty or full), the uptake of specific activities (work, sex, swimming, core exercise), potential adverse outcomes related to activity and exercise (exit site care, perspiration, cardiovascular compromise, fatigue, intra-abdominal pressure), the effect of exercise and activity on conditions of interest (mental health, obesity, frailty, low fitness) and exercise nutrition.

Interventions to Improve Hydration in Older Adults: A Systematic Review and Meta-Analysis

Dehydration is common in the elderly, especially when hospitalised. This study investigated the impact of interventions to improve hydration in acutely unwell or institutionalised older adults for hydration and hydration linked events (constipation, falls, urinary tract infections) as well as patient satisfaction. Four databases were searched from inception to 13 May 2020 for studies of interventions to improve hydration. Nineteen studies (978 participants) were included and two studies (165 participants) were meta-analysed. Behavioural interventions were associated with a significant improvement in hydration. Environmental, multifaceted and nutritional interventions had mixed success. Meta-analysis indicated that groups receiving interventions to improve hydration consumed 300.93 mL more fluid per day than those in the usual care groups (95% CI: 289.27 mL, 312.59 mL; I² = 0%, p < 0.00001). Overall, there is limited evidence describing interventions to improve hydration in acutely unwell or institutionalised older adults. Behavioural interventions appear promising. High-quality studies using validated rather than subjective methods of assessing hydration are needed to determine effective interventions.

Elevated renal resistive index is independently predicted by older age, but not by the presence of chronic kidney disease: A retrospective cohort study

PURPOSE

Renal resistive index (RRI), which reflects intra-renal arterial impedance is routinely measured when undertaking renal Doppler ultrasonography (RDU). We investigated the relationship between elevated RRI and presence of chronic kidney disease (CKD), and examined whether elevated RRI at baseline is associated with decline in estimated glomerular filtration rate (eGFR) on follow-up.

METHODS

This retrospective observational study examined the association of elevated RRI (>0.7) with the presence of CKD (eGFR <60 mL/min for >3 months), demographic and clinical factors in multivariable models. We also examined the effect of elevated RRI on eGFR decline on follow-up using mixed models.

RESULTS

Of the 346 patients undergoing RDU (median age 69.7 years, 46.2% male), 180 had elevated RRI. There was a strong inverse association between RRI and eGFR at baseline, 1 and 2 years (rho = -0.53, -0.51, -0.53, all p < 001). Elevated RRI was independently predicted by older age (Odds Ratio 3.29, 95% CI: 2.25-4.8, p < 0.001) and diabetes (Odds Ratio 2.65, 95% CI: 1.21-5.80, p = 0.015) but not CKD using multivariate logistic regression. Decline of eGFR was not different between RRI categories on follow-up.

CONCLUSION

Elevated RRI was predicted by older age and diabetes, but not by the presence of CKD. Baseline RRI was not associated with eGFR decline. This article is protected by copyright. All rights reserved.

Systematic review with meta-analysis: dietary intake in adults with inflammatory bowel disease

BACKGROUND

Poor dietary intake is associated with the development of malnutrition, micronutrient deficiencies, anaemia and osteoporosis in individuals with inflammatory bowel disease. While trials are underway to manipulate the diet of people with IBD, there has been no comprehensive systematic review of the dietary intake of adults with IBD.

AIMS

To conduct a systematic evaluation and meta-analysis of the dietary intake of adults with IBD, including macronutrients, micronutrients and food group data.

METHODS

CINAHL, Embase, Medline and Scopus were searched from 1 January 2000 to 25 September 2020 for cohort, case-control or cross-sectional studies that reported usual dietary intake in adults. Data were pooled and reported as weighted mean intake for: all adults with IBD; Crohn's disease; ulcerative colitis; active disease; remission; males; females. A random-effects meta-analysis model compared intake with healthy individuals.

RESULTS

Forty studies were identified and 19 were included in the meta-analysis. All subgroups of adults with IBD consumed inadequate energy (mean intake in adults with IBD 1980 ± 130 kcal), fibre (14 ± 4 g), folate (246 ± 33 mg) and calcium (529 ± 114 mg) per day. Intake of breads and cereals, legumes, fruit, vegetables and dairy were inadequate. Compared to healthy individuals, adults with IBD consume significantly less dietary fibre (SMD -0.59; 95% CI: -0.73, -0.46).

CONCLUSIONS

This review provides improved clarity about the dietary intake of adults with IBD. Future attention is required to improve diet quality and increase understanding of factors influencing dietary intake in IBD.

Dietary Modelling to Explore the Impact of Potassium Chloride Replacement for Sodium in Bread for Adults with Chronic Kidney Disease

Food manufacturers are increasingly substituting potassium chloride (KCl) in food products so as to reduce the sodium chloride content. Bread and bread products are common staple foods in many Western households and are a target for recipe reformulation using KCl. Given that chronic kidney disease (CKD) is a medical condition of global importance that requires dietary potassium restriction in the later stages, we sought to evaluate the impact and safety of varying levels of KCl substitution in bread products. We undertook a secondary analysis of dietary data from the National Nutrition and Physical Activity Survey 2011–2012 for 12,152 participants (154 participants with CKD). The sodium chloride content in bread and bread-based products was substituted with 20%, 30%, and 40% of KCl. The contribution of these alterations in the dietary potassium intake to the total daily potassium intake were then examined. The replacement of sodium in bread with varying amounts of KCl (20%, 30%, and 40%) resulted in one third of people with CKD exceeding the safe limits for dietary potassium consumption (31.8%, 32.6%, and 33%, respectively). KCl substitution in staple foods such as bread and bread products have serious and potentially fatal consequences for people who need to restrict dietary potassium. Improved food labelling is required for consumers to avoid excessive consumption.

A Systematic Review of Handgrip Strength Measurement in Clinical and Epidemiological Studies of Kidney Disease: Toward a Standardized Approach

In chronic kidney disease (CKD), handgrip strength (HGS) is recommended as a surrogate measure of protein-energy status and functional status. However, it is not routinely used because of inconsistencies such as the optimal timing of the HGS measurement and unclear guidance regarding technique. We aimed to determine the extent of variation in the protocols and methods of HGS assessment. We aimed to identify clinical and epidemiological studies conducted on CKD that reported on the use of HGS as an outcome. A systematic literature search identified n = 129 studies with a total participant population of n = 35,192. We identified large variations in all aspects of the methodology including body and arm position, repetitions, rest time, timing, familiarization, and how scores were calculated. The heterogeneous methodologies used reinforce the need to standardize HGS measurement. After reviewing previously employed methodology in the literature, we propose a comprehensive HGS assessment protocol for use in CKD.

What are the information needs and concerns of individuals with Polycystic Kidney Disease? Results of an online survey using Facebook and social listening analysis

BACKGROUND

Polycystic Kidney Disease (PKD) is a hereditary disorder that has no cure and can result in end stage kidney failure. Searching for health information online and via social media is a common phenomenon in many medical conditions. However, no recent studies have documented the information needs, online behaviours, and concerns of people with PKD. The aim of this study was to explore the information needs of individuals with PKD and their carers by documenting (i) the information needs (ii) online information health seeking behaviours (iii) the perceived challenges of living with PKD and (iv) dietary concerns.

METHODS

A 17-item survey was constructed by undertaking a social listening analysis. This survey was then distributed via PKD related social media groups on Facebook. Seven groups distributed the survey with permission from the group owners. Open free text survey questions were analysed thematically using content analysis.

RESULTS

A total of 536 respondents completed the online survey (70.9 % female, 77 % aged 35-70, 70.2 % diagnosed more than 10 years ago). The major information need expressed by participants with PKD was for dietary information. Information regarding medications, medical management and symptom control were also desired. The overarching themes arising from the free text responses to the major challenge of living with PKD included 'learning to navigate dietary ambiguities'; 'managing social, psychological and emotional needs'; and 'accepting an uncertain future'. In addition to a strong desire for practical and specific dietary information, participants expressed a need for more online information pertaining to management of fatigue, pain, complications and how to manage mental health. Online peer support was also highly regarded and desired.

CONCLUSIONS

This study provides contemporary insights into the type of information desired by people with PKD. The results indicated that there was a strong desire for unambiguous information and guidance from health professionals to facilitate self-management, alleviate concerns, and address the complexities of living with Polycystic Kidney Disease. While diet is an important and frequently expressed need, there also remains a large demand for information on how to support psychological needs, and on medical management in order to support treatment decision making. Future work is required to develop specific, actionable and evidence-based resources for patients that are available online and through health professionals. Increased access to renal dietitians, peer support and additional training for health professionals could also improve patient-centered care and support self-management.

Incorporating digital platforms into nutritional care in chronic kidney disease

Digital health is increasingly recognized for its value to enhance patient care and clinical care processes. People with chronic kidney disease often find dietary self-management challenging. There is promising evidence that digital health interventions can support people with chronic kidney disease to self-manage their diet, by providing more frequent access to nutritional information and dietitians and by facilitating regular monitoring and feedback. There is some emerging evidence of the impact of digital interventions in chronic kidney disease; however, more research is needed to provide meaningful interpretation of how digital interventions can enhance current practice. Importantly, a number of factors need to be considered when designing, developing, implementing, and evaluating the impact of digital interventions. Consideration of the nutrition service and patients' needs, motivation and digital literacy, type of digital intervention, and the ability to embed the digital intervention into current care processes are critical. This paper overviews the current literature on digital health and self-management, factors to consider when embedding digital interventions and platforms into nutrition care and practical considerations for designing and implementing digital health interventions to enhance the nutritional care of people with chronic kidney disease.

Cytoarchitectural characteristics associated with cognitive flexibility in raccoons

With rates of psychiatric illnesses such as depression continuing to rise, additional preclinical models are needed to facilitate translational neuroscience research. In the current study, the raccoon (Procyon lotor) was investigated due to its similarities with primate brains, including comparable proportional neuronal densities, cortical magnification of the forepaw area, and cortical gyrification. Specifically, we report on the cytoarchitectural characteristics of raccoons profiled as high, intermediate, or low solvers in a multiaccess problem-solving task. Isotropic fractionation indicated that high-solvers had significantly more cells in the hippocampus (HC) than the other solving groups; further, a nonsignificant trend suggested that this increase in cell profile density was due to increased nonneuronal (e.g., glial) cells. Group differences were not observed in the cellular density of the somatosensory cortex. Thionin-based staining confirmed the presence of von Economo neurons (VENs) in the frontoinsular cortex, although no impact of solving ability on VEN cell profile density levels was observed. Elongated fusiform cells were quantified in the HC dentate gyrus where high-solvers were observed to have higher levels of this cell type than the other solving groups. In sum, the current findings suggest that varying cytoarchitectural phenotypes contribute to cognitive flexibility. Additional research is necessary to determine the translational value of cytoarchitectural distribution patterns on adaptive behavioral outcomes associated with cognitive performance and mental health.

NutriCoviD30 : étude nationale sur l’évaluation de l’état de santé et la prise en charge nutritionnelle à 1 mois d’une hospitalisation pour COVID-19

Introduction et but de l’étude

Matériel et méthodes

Résultats et analyse statistique

Conclusion

Australia IBD Microbiome (AIM) Study: protocol for a multicentre longitudinal prospective cohort study

INTRODUCTION

Crohn's disease and ulcerative colitis are common chronic idiopathic inflammatory bowel diseases (IBD), which cause considerable morbidity. Although the precise mechanisms of disease remain unclear, evidence implicates a strong multidirectional interplay between diet, environmental factors, genetic determinants/immune perturbations and the gut microbiota. IBD can be brought into remission using a number of medications, which act by suppressing the immune response. However, none of the available medications address any of the underlying potential mechanisms. As we understand more about how the microbiota drives inflammation, much interest has focused on identifying microbial signals/triggers in the search for effective therapeutic targets. We describe the establishment of the Australian IBD Microbiota (AIM) Study, Australia's first longitudinal IBD bioresource, which will identify and correlate longitudinal microbial and metagenomics signals to disease activity as evaluated by validated clinical instruments, patient-reported surveys, as well as biomarkers. The AIM Study will also gather extensive demographic, clinical, lifestyle and dietary data known to influence microbial composition in order to generate a more complete understanding of the interplay between patients with IBD and their microbiota.

METHODS

The AIM Study is an Australian multicentre longitudinal prospective cohort study, which will enrol 1000 participants; 500 patients with IBD and 500 healthy controls over a 5-year period. Assessment occurs at 3 monthly intervals over a 24-month period. At each assessment oral and faecal samples are self-collected along with patient-reported outcome measures, with clinical data also collected at baseline, 12 and 24 months. Intestinal tissue will be sampled whenever a colonoscopy is performed. Dietary intake, general health and psychological state will be assessed using validated self-report questionnaires. Samples will undergo metagenomic, transcriptomic, proteomic, metabolomic and culturomic analyses. Omics data will be integrated with clinical data to identify predictive biomarkers of response to therapy, disease behaviour and environmental factors in patients with IBD.

ETHICS AND DISSEMINATION

Ethical approval for this study has been obtained from the South Eastern Sydney Local Health District Research Ethics Committee (HREC 2019/ETH11443). Findings will be reported at national and international gastroenterology meetings and published in peer-reviewed journals.

TRIAL REGISTRATION NUMBER

ACTRN12619000911190.

Supporting patients to be involved in decisions about their health and care: Development of a best practice health literacy App for Australian adults living with Chronic Kidney Disease

ISSUE ADDRESSED

Inadequate health literacy is common in those with chronic kidney disease (CKD), especially among culturally and linguistically diverse groups. Patient information for people with CKD, including those with kidney failure requiring dialysis, is often written beyond their literacy level, and many CKD-related apps are not accurate or evidence based. These represent important barriers to health care decision-making and equity in access to health care.

METHODS

We developed a cross-platform application (the "SUCCESS app") to support Australian adults with kidney failure requiring dialysis to actively participate in self-management and decision-making. App content was informed by health literacy theory which recognises the importance of reducing the complexity of health information as well as equipping consumers with the skills necessary to access, understand and act on this information. The development team comprised members of diverse backgrounds and expertise, including nursing, allied health, psychology, epidemiology, nephrology and IT, as well as consumer representatives.

RESULTS

Content areas included diet, fluids, medicine, physical activity, emotional well-being and supportive care, chosen as they represent important decision points in the CKD trajectory. To support functional health literacy, a four-step process to simplify written content was used including calculating readability statistics, applying the Patient Education Materials Assessment Tool, supplementing written information with video and audio content, and incorporating micro-learning and interactive quizzes. To develop communicative and critical health literacy skills, question prompt lists and evidence-based volitional help sheets were included in each module to support question-asking and behaviour change. We also developed animated skills training related to communication, shared decision-making and critical appraisal of health information.

CONCLUSIONS

This is the first health literacy informed app developed to promote active patient participation in CKD management and decision-making. Ongoing evaluation of the SUCCESS app through analysis of quantitative and qualitative data will provide valuable insights into the feasibility of implementing the app with dialysis patients, and the impact of the intervention of psychosocial and clinical outcomes. SO WHAT?: Digital health solutions have been found to improve self-management for chronic conditions, and could optimise the use of health care services and patient outcomes.

Associations Among Plant-Based Diet Quality, Uremic Toxins, and Gut Microbiota Profile in Adults Undergoing Hemodialysis Therapy

OBJECTIVE

The objective of the study was to evaluate associations among diet quality, serum uremic toxin concentrations, and the gut microbiota profile in adults undergoing hemodialysis therapy.

DESIGN AND METHODS

This is a cross-sectional analysis of baseline data from a clinical trial involving adults receiving hemodialysis therapy. Usual dietary intake was determined using a diet history method administered by Accredited Practising Dietitians. Two approaches were used for diet quality assessment: (1) using three a priori defined plant-based diet indices-an overall plant-based diet index (PDI), a healthy PDI, and an unhealthy PDI and (2) classification of food group intake. Serum uremic toxins (p-cresyl sulfate and indoxyl sulfate (IS); free and total) were determined by ultra-performance liquid chromatography. Gut microbiota composition was established through sequencing the 16S rRNA gene in stool samples.

RESULTS

Twenty-two adults (median age 70.5 [interquartile range: 59-76], 64% male) were included in the final analysis. Higher adherence to the PDI was associated with lower total IS levels (P = .028), independent of dialysis adequacy, urinary output, and blood albumin levels. In contrast, higher adherence to the unhealthy PDI was associated with increases in both free and total IS. Several other direct and inverse associations between diet quality with uremic toxins, microbial relative abundances, and diversity metrics were also highlighted. Diet-associated taxa showed significantly different trends of association with serum uremic toxin concentrations (P < .05). Higher adherence to the PDI was negatively associated with relative abundances of Haemophilus and Haemophilus parainfluenzae that were related to elevated total IS levels. In contrast, increased intake of food items considered unhealthy, such as animal fats, sweets and desserts, were associated with bacteria linked to higher IS and p-cresyl sulfate (total and free) concentrations.

CONCLUSIONS

The quality of diet and food selections may influence uremic toxin production by the gut microbiota in adults receiving hemodialysis. Well-designed dietary intervention trials that adopt multi-omic technologies appropriate for the functional annotation of the gut microbiome are needed to validate our findings and establish causality.