The association between dietetic consultation and time to dialysis for patients attending a pre-dialysis clinic: A retrospective cohort study

Nutritional Intervention Effectiveness on Slowing Time to Dialysis in Elderly Patients with Chronic Kidney Disease-A Retrospective Cohort Study

Background: Chronic kidney disease (CKD) is a global health issue. Evidence of the effectiveness of nutritional intervention on slowing time to dialysis is limited in Arab countries. Therefore, this study aims to contribute to current research by providing new insights on the efficacy of personalized nutritional intervention in pre-dialysis patients in the Kingdom of Bahrain. Methods: This retrospective cohort study included 265 CKD patients (163 males and 108 females) who were admitted to the nephrology outpatient clinic at Salmaniya Medical Complex in Bahrain. The nutritional intervention group (NIG) receiving dietary advice by an expert renal dietitian consisted of 121 patients, while the non-nutritional intervention control group (non-NIG) that did not receive any nutritional support consisted of 150 patients. Patients were evaluated at baseline and follow-up. Results: The NIG had a significant increase in the estimated glomerular filtration rate (eGFR) compared to the non-NIG that had a significant decrease (5.16 vs. −2.85 mL/min/1.73 m² (p = 0.000), respectively). When adjusted for age and gender, the mean difference was greater (8.0 mL/min/1.73 m², p = 0.000). Additionally, there was a significant reduction in blood urea nitrogen and serum creatinine (−2.19 mmol/L and −25.31 µmol/L; p = 0.000, respectively). Moreover, the intervention had a positive impact on weight loss and body mass index (−1.84 kg and−0.69 kg/m², respectively; p = 0.000) and lipid profile, with a significant reduction in total cholesterol and triglyceride levels (−0.17 mmol/L, p = 0.006 and −0.15 mmol/L, p = 0.026, respectively). Additional significant results from the NIG included reduced uric acid (−28.35 µmol/L, p = 0.006), serum phosphorus (−0.05 mol/L, p = 0.025), fasting blood glucose (−0.70 mmol/L, p = 0.016) and glycated hemoglobin (1.10 mmol/mol, p = 0.419). Conclusions: This study suggests that, in patients of CKD, nutritional intervention counselling plays a significant role in reducing the time needed for dialysis and improves nutritional-related biomarkers compared to patients not receiving this intervention.

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.

Acceptability of Plant-Based Diets for People with Chronic Kidney Disease: Perspectives of Renal Dietitians

The purpose of this study was to explore the perspective of renal dietitians regarding plant-based diets for chronic kidney disease (CKD) management and evaluate the acceptability of a hypothetical plant-based dietary prescription aiming for the consumption of 30 unique plant foods per week. This study used an exploratory mixed methods design. Forty-six renal dietitians participated in either an online survey (n = 35) or an in-depth interview (n = 11). Dietitians perceived that plant-based diets could address multiple clinical concerns relevant to CKD. Forty percent of survey respondents reported the hypothetical dietary prescription was realistic for people with CKD, 34.3% were unsure, and 25.7% perceived it as unrealistic. Strengths of the hypothetical prescription included shifting the focus to whole foods and using practical resources like recipes. Limited staffing, time, and follow-up opportunities with patients, as well as differing nutrition philosophies were the most commonly reported challenges to implementation; while a supportive multidisciplinary team was identified as an important enabler. To increase patient acceptance of plant-based dietary approaches, education about plant food benefits was recommended, as was implementing small, incremental dietary changes. Successful implementation of plant-based diets is perceived to require frequent patient contact and ongoing education and support by a dietitian. Buy-in from the multidisciplinary team was also considered imperative.

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.

Health Service Costs for a Predialysis Dietetic Clinic: A Retrospective Cost Analysis Study

OBJECTIVES

Effect of dietetic consultation (DC) on clinical outcomes is an under-researched component of predialysis education. Predialysis DC has been associated with a 7.5-month delay in requiring dialysis commencement, having potential cost implications for health services. Limited studies have evaluated the possible impact of predialysis DC on health service costs. This study aimed to investigate the hospital health service costs associated for patients attending a predialysis dietetic clinic.

METHODS

A cost analysis comparing hospital health service costs over 4 years in a cohort of predialysis patients with and without DC. Retrospective study data were used (n = 246) along with outpatient renal clinic visits, hospital admissions records to estimate total hospital service costs. A generalized linear model evaluated associations between total cost and the marginal effects of DC and other variables on total costs.

RESULTS

Mean total cost for patients (outpatient visits, admissions, and dialysis) was AUD$178,913 (95% confidence interval = $158,735-$199,090) or $185/day (95% confidence interval = $12-$161). The DC group total costs/day were lower than the no-DC group with a mean difference of $51/day ($155 vs. $206; P = .03). Patients in the DC group had less admissions compared to the no-DC group (6.32 vs. 8.06; P = .02). The highest marginal costs estimated for the entire cohort were lower estimated glomerular filtration rate at admission ($123,511, P = .001), inpatient admissions ($189,333, P < .001), commencing dialysis ($581,812, P < .001), having diabetes ($94,590, P = .014), and cerebrovascular disease ($177,080, P = .01). DC advice did not influence total costs.

CONCLUSIONS

Patients who received DC had lower total health services costs/day compared to those who did not receive DC. Marginal cost analysis indicates the cost difference to be attributed to less time on dialysis and fewer hospital admissions in this retrospective observational cohort. An assessment of dietetic staffing in predialysis renal services is warranted.