The dialysis diet and fluid non-adherence questionnaire: validity testing of a self-report instrument for clinical practice

Effects of motivational interviewing and an education programme based on Watson's theory of human caring on adults receiving haemodialysis: randomised controlled trial

Background

Effective haemodialysis management is crucial, and behavioural change interventions are essential for good haemodialysis self-management. However, no study explores the effects of Watson's theory such as the humanistic approach to behavioural change in haemodialysis.

Aims

To evaluate the effects of motivational interviewing and an education programme based on Watson's theory on adherence to treatment, satisfaction and health-related quality of life (HRQOL) on haemodialysis.

Methods

This study was conducted in Turkey. Intervention group received four sessions of motivational interviewing and an education programme based on Watson's theory, and the control group received routine care. The primary outcomes were adherence to fluid intake, diet and medication, attendance at haemodialysis sessions, satisfaction and HRQOL. The secondary outcomes were laboratory parameters.

Results

Participants were randomly assigned to the intervention (n = 32) or the control group (n = 28). There were statistically significant between-group differences in adherence to fluid intake, diet and medication, and the kidney disease burden sub-dimension of HRQOL, with medium to large effect sizes. There was no difference in laboratory parameters. Participants showed high levels of satisfaction with this programme.

Conclusions

This study provides evidence for nurses regarding Watson's theory-based programme in a haemodialysis population. Results will help nurses to develop and practice customised effective interventions for haemodialysis.

The effects of death anxiety on diet-fluid restriction non-adherence in hemodialysis patients

INTRODUCTION

The study was performed to examine the effects of death anxiety on diet-fluid restriction non-adherence in hemodialysis patients.

METHODS

This descriptive, cross-sectional, and correlational study was performed with 118 hemodialysis patients who received treatment in the dialysis unit of a university hospital and a state hospital in Elazığ, eastern Turkey. The study data were obtained with the "Descriptive Data Form", "Death Anxiety Scale", and "Dietary and Fluid Restriction Non-Adherence Scale".

FINDINGS

The average Death Anxiety Scale total score of the patients was 10.00 ± 4.75. The "Duration of non-adherence with diet" mean score was 1.66 ± 1.70, "Degree of non-adherence with diet" mean score was 1.24 ± 1.19, "Duration of non-adherence with fluid restriction" mean score was 1.61 ± 1.71, and "Degree of non-adherence with fluid restriction" mean score was 1.16 ± 1.13. The independent variable Death Anxiety Scale significantly and negatively affected the dependent variable "Duration of non-adherence with diet", "Degree of non-adherence with diet", "Duration of non-adherence with fluid restriction", and "Degree of non-adherence with fluid restriction".

DISCUSSION

Hemodialysis patients face serious death anxiety, their degree of non-adherence with diet-fluid restriction was low as death anxiety scores increased, and the degree of non-adherence with diet-fluid restriction decreased.

Screening for cognitive symptoms in dialysis patients with an extended version of Kidney Disease Quality of Life Cognitive Function subscale (KDQOL-CF): a validation study

BACKGROUND

Cognitive impairment and cognitive complaints are highly prevalent in haemodialysis patients and are associated with adverse health outcomes. Currently, there is no established guideline on cognitive screening in this population. Although neuropsychological tests are the gold standard measure of cognition, they are time-consuming and require trained personnel. The Kidney Disease Quality of Life Cognitive Function subscale (KDQOL-CF), a self-administered questionnaire with only three items, may be a feasible alternative for busy renal settings. In this study, we validated an extended version of KDQOL-CF by including an additional memory item (i.e., "How much of the time during the past four weeks did you have memory difficulties?") to improve its ability to capture memory impairments that are common in dialysis patients but missing in the original scale.

METHODS

A total of 268 haemodialysis patients treated in 10 dialysis centres in Singapore completed the extended KDQOL-CF and gold standard measures of objective cognition (Montreal Cognitive Assessment) and subjective cognition (Patient's Assessment of Own Functioning Inventory). Patients also self-reported their functional impairment and treatment nonadherence. Statistical analyses were performed to determine the factor structure and psychometric properties of the extended KDQOL-CF. Receiver operating characteristic curve analyses were conducted to determine the diagnostic ability of the extended KDQOL-CF in identifying objective cognitive impairments and subjective cognitive complaints. Additionally, we examined associations between the extended KDQOL-CF and patients' self-reported functional impairment and treatment nonadherence.

RESULTS

The extended KDQOL-CF can be explained by a one-factor model and has good internal consistency and convergent validity. Receiver operating characteristic curve analysis provided support for the diagnostic accuracy of the extended KDQOL-CF in identifying objective cognitive impairments (area under curve = 60.9%) and subjective cognitive complaints (area under curve = 76.2%). The extended KDQOL-CF also performed better than the original KDQOL-CF in predicting functional impairment and treatment nonadherence in the recruited patients.

CONCLUSIONS

The extended KDQOL-CF may be used as a first-step cognitive screening tool in dialysis settings to offer a gateway for further diagnostic evaluation and preventive or rehabilitative programs.

Psychometric properties of the Greek simplified medication adherence questionnaire among Iranian hemodialysis patients

Patients suffering from chronic kidney failure ultimately need kidney replacement therapies, such as hemodialysis. Adherence to treatment in these patients can play a central role in improving health levels and feelings of well-being. The aim of this study was to determine the psychometric properties of the Persian version of the modified version of the Greek Simplified Medication Adherence Questionnaire in hemodialysis patients. In a methodological study carried out in 2024, a sample of 411 hemodialysis patients was selected using a convenience sampling method. The GR-SMAQ-HD utilized in the study was translated, and its psychometric properties were evaluated through assessments of construct validity, including exploratory and confirmatory factor analysis, convergent validity, and divergent validity. Furthermore, the study examined the internal consistency of the scale to ensure its reliability. The mean age of the participants was 59.37 (SD = 12.99) years. The results of the tetrachoric correlation matrix with Varimax with Kaiser Normalization rotation using the first random dataset (n = 205) extracted three factors accounting for 74.4% of the variance comprising 8 items. The results of CFA showed that the data fit the model. As for construct reliability, Cronbach's alpha, CR, AIC, and MaxR for all constructs were greater than 0.7, demonstrating good internal consistency and construct reliability. In the overall population, the mean score for treatment Adherence was 5.61 (SD = 1.95, 95% CI 5.42, 5.80). Invariance analysis shows that the model has strong measurement invariance between sex ($ΔCFI= - 0.001, ΔRMSEA= - 0.004$). The findings affirm the appropriateness of employing the Persian iteration of the GR-SMAQ-HD as a dependable and valid instrument for assessing adherence to treatment in hemodialysis patients. GR-SMAQ-HD is crucial for ensuring that patients follow their prescribed treatment regimens effectively.

Treatment Adherence and Factors Influencing It in End-Stage Renal Disease Patients on Maintenance Hemodialysis: A Study From a Tertiary Care Hospital in North India

Background Chronic kidney disease (CKD) has become a significant global health concern, making its effective management crucial. Patients with end-stage renal disease (ESRD) often require multiple medications, restriction of fluid and diet intake, and maintenance hemodialysis (HD) to manage their condition, which together makes it difficult to maintain adherence to treatment. This study aimed to evaluate the prevalence of treatment adherence among ESRD patients and to identify influencing factors, addressing the lack of such data from Northern India. Methods This cross-sectional study was conducted at a tertiary care hospital in Northern India. ESRD patients on maintenance HD for at least three months were recruited from the outpatient and dialysis units of the hospital. Patients were interviewed using a validated and reliable tool, the End-Stage Renal Disease Adherence Questionnaire (ESRD-AQ). The primary objective was to assess the prevalence of treatment adherence among ESRD patients on HD who presented to the hospital, and the secondary objective was to evaluate various factors influencing treatment adherence among these patients. Results A total of 199 patients were enrolled, with a mean age ± standard deviation of 44.34 ± 13.7 years. Among the patients, 51.76% (n = 103) demonstrated good adherence (adherence score >1000), 41.71% (n = 83) showed moderate adherence (adherence score 700-999), and 6.53% (n = 13) exhibited poor adherence (adherence score <700). A significant association was found between adherence scores and patients' perception of treatment regimens (p < 0.0001 for each of the four treatment adherence domains, namely, HD, medication, fluid restriction, and diet restriction) and between adherence scores and the frequency of counseling by medical professionals (p = 0.106, 0.037, 0.014, and 0.002 for HD, medication, fluid restriction, and diet restriction, respectively). Individuals with graduate-level education or higher exhibited significantly better adherence scores than those with education levels below graduation (p = 0.044). However, age, sex, marital status, area of residence, employment status, mode of transportation, and the presence of family members accompanying patients to HD sessions were not significantly associated with treatment adherence. Conclusion Approximately half of the study population exhibited moderate-to-poor adherence, emphasizing the need for substantial improvement in adherence levels. These findings suggest that more frequent and effective counseling is necessary, as low adherence scores were significantly associated with infrequent counseling and poor patients' perceptions of the importance of treatment regimens.

Structural equation modelling of the role of cognition in functional interference and treatment nonadherence among haemodialysis patients

BACKGROUND AND OBJECTIVES

Cognitive impairment is common in haemodialysis patients and associated with adverse health outcomes. This may be due to cognitive impairments interfering with daily functioning and self-care, but evidence is limited. This cross-sectional study aims to explore the interrelationships between cognition and functional outcomes in haemodialysis patients.

METHODS

Haemodialysis patients completed measures of objective cognitive function (Montreal Cognitive Assessment), everyday problem-solving skills (scenario-based task), and subjective cognitive complaints (self-report). Participants also self-reported sociodemographic information, functional interference, treatment nonadherence, and mood and fatigue symptoms. Patients' clinical data including comorbidities and lab results were extracted from medical record. Structural equation modelling was performed.

RESULTS

A total of 268 haemodialysis patients (mean age = 59.87 years; 42.5% female) participated. The final model showed satisfactory fit: CFI = 0.916, TLI = 0.905, RMSEA = 0.033 (90% confidence interval 0.024 to 0.041), SRMR = 0.066, χ2(493) = 618.573 (p < .001). There was a negative association between objective cognitive function and subjective cognitive complaints. Cognitive complaints were positively associated with both functional interference and treatment nonadherence, whereas objective performance was not. Everyday problem-solving skills emerged as a distinct aspect of cognition not associated with objective performance or subjective complaints, but had additive utility in predicting functional interference.

CONCLUSIONS

Subjective cognitive complaints and everyday problem-solving skills appear to be stronger predictors of functional variables compared to objective performance based on traditional tests. Routine screening of everyday cognitive difficulties may allow for early identification of dialysis patients at risk of cognitive impairment, functional interference, treatment nonadherence, and poor clinical outcomes.

The effect of non-compliance with diet and liquid restriction on fatigue in dialysis patients

OBJECTIVE

This study was conducted to determine the relationship between non-compliance with dietary and fluid restriction, body mass index, and the severity of fatigue in dialysis patients.

METHOD

A descriptive and cross-sectional study was conducted on 42 dialysis patients. The data were collected employing a "General Information Form", Body Mass Index, "Fatigue Severity Scale", and "Dialysis Diet and Fluid Non-Adherence Questionnaire.". Data were evaluated using percentages, averages, one-way ANOVA, T-tests, and Pearson correlation tests.

RESULTS

The average number of days when the patients did not comply with their diet was 3.69 ± 4.85, and the average number of days when they did not comply with fluid restriction was 2.71 ± 5.02. The age and marital status of the patients were found to affect the fatigue severity. It was found that the cases were associated with creatinine and calcium values and the number of days they did not comply with fluid restriction.

CONCLUSION

It was determined that there was no significant relationship between non-compliance with diet and fluid restriction and the severity of fatigue. It was found that the severity of fatigue was lower in patients who complied with diet and fluid restriction, although not significantly lower than in those who did not comply.

Factors Associated with Nonadherence to Dietary Prescriptions among Hemodialysis Patients, Makkah, Saudi Arabia

The nonadherence of hemodialysis (HD) patients correlates with morbidity and mortality. Despite severe consequences, noncompliance with their medical regimen is the norm for HD patients rather than the exception. Factors associated with nonadherence to dietary restrictions among HD patients have been explored in many studies; however, most were in Western countries and there is a remarkable paucity of studies in Saudi Arabia. HD patients have several features that put them at an increased risk of nonadherence to dietary restrictions, including prolonged, intensive treatment, and their medical regimens are easily determined with objective measures. This crosssectional study aimed to determine factors related to nonadherence to dietary restrictions among 361 HD patients randomly selected from HD centers in Makkah, Saudi Arabia. Individuals were assessed for adherence using the End-Stage Renal Disease - Adherence Questionnaire in addition to clinical examinations and laboratory investigations. Female patients were more likely to be nonadherent to dietary restrictions. Adherence to dietary restrictions was relatively higher among non-Saudi patients, older people, those who are married, those with university qualifications, those who are employed, and those with higher monthly incomes; nevertheless, these differences were not statistically significant. Despite the relatively higher frequency of adherence to dietary restrictions among patients with a duration of dialysis of <60 months, hypertensive patients, patients with a previous kidney transplant, and those with a previous history of psychiatric illnesses, these differences were not statistically significant. Patients with factors associated with nonadherence to dietary restrictions deserve special attention and support to improve their adherence.

A novel health behaviour intervention to promote adherence in kidney failure

BACKGROUND

Health behaviour adherence is associated with improved survival in kidney failure (KF); however, most patients with KF do not adhere to one or more health behaviours. Existing health behaviour interventions have significant limitations and do not focus on psychological factors that are associated with adherence and health.

OBJECTIVES

To examine the feasibility, acceptability, and preliminary efficacy of a 12-week, phone-delivered, positive psychology-motivational interviewing (MI) intervention to promote psychological well-being and adherence in KF.

DESIGN

Single-arm, proof-of-concept trial (N = 10).

PARTICIPANTS

Participants were adults with KF undergoing haemodialysis and reporting suboptimal adherence to physical activity, diet, and/or medications. Participants attended weekly phone sessions with a study trainer, completed weekly positive psychology exercises (focused on gratitude, strengths, and meaning), and worked towards physical activity, diet, and/or medication goals.

MEASUREMENTS

Feasibility was measured by the percentage of sessions completed, while acceptability was assessed through participant ratings of positive psychology and MI session ease and utility (0-10 Likert scales). We explored the intervention's impact on psychological outcomes and health behaviour adherence using validated scales and accelerometers.

RESULTS

Participants completed 78% of sessions and rated the program's components as easy to complete (positive psychology: 8.7 ± 1.5; MI: 8.3 ± 2.0) and subjectively helpful (positive psychology: 8.8 ± 1.2; MI: 8.8 ± 1.6). The intervention led to promising but nonsignificant improvements in psychological and adherence measures.

CONCLUSIONS

This 12-week, phone-delivered program was feasible, well-accepted, and associated with nonsignificant improvements health behaviour adherence, highlighting the need for a larger efficacy trial.

Establishing the criterion validity of self-report measures of adherence in hemodialysis through associations with clinical biomarkers: A systematic review and meta-analysis

Accurate measurement of adherence is crucial to rigorously evaluate interventions aimed at improving this outcome in patients undergoing in-center hemodialysis. Previous research has shown great variability in non-adherence rates between studies, mainly due to the use of different direct (e.g., clinical biomarkers) and indirect (e.g., questionnaires) measures. Although self-reported adherence in hemodialysis has been widely explored, it is still unclear which is the most accurate questionnaire to assess this outcome; therefore, the question of how to optimize adherence measurement in research and clinical practice has emerged as a key issue that needs to be addressed. This systematic review and meta-analysis aimed to explore the criterion validity of self-report measures of adherence in hemodialysis established through the association between test scores and clinical biomarkers (the criterion measure). The protocol was registered in PROSPERO (2021 CRD42021267550). The last search was performed on March 29th, 2022, on Web of Science (all databases included), Scopus, CINHAL, APA PsycInfo, and MEDLINE/PubMed. Twenty-nine primary studies were included, and thirty-eight associations were analyzed. The Hunter-Schmidt's meta-analysis was computed for the associations with more than two studies (n = 20). The results showed that six associations were large (16%), 11 were medium (29%) and the remaining were of small strength. The test scores from the End-Stage Renal Disease Adherence Questionnaire (range: 0.212<rc <0.319) and the Dialysis Diet and Fluid Non-Adherence Questionnaire (range: 0.206<rc <0.359) had medium to large strength associations with interdialytic weight gain, serum phosphorus, and potassium levels, indicating that these questionnaires have reasonable concurrent criterion validity to measure fluid control and adherence to dietary restrictions in patients receiving hemodialysis. The available data did not allow exploring the criterion validity of the test scores in relation to hemodialysis attendance (skipping and/or shortening sessions). These results suggest that the decision to use one questionnaire over another must be made with caution, as researchers need to consider the characteristics of the sample and the objectives of the study. Given that direct and indirect methods have their advantages and disadvantages, the combination of adherence measures in hemodialysis is recommended to accurately assess this complex and multidimensional outcome.

A Comparative Study of the Efficacy of an Intervention with a Nutritional Supplement for Patients with Chronic Kidney Disease: A Randomized Trial

Chronic kidney disease (CKD) involves heterogeneous diseases that affect the renal structure and function. Malnutrition plays a crucial role during patients with CKD on hemodialysis (HD) treatment and is associated with an increased rate and duration of hospitalizations. The aim of this randomized, parallel, intervention-controlled trial was to assess whether the use of daily supplementation with a new nutritional product developed by the Grand Fontaine Laboratories improves the nutritional status and anthropometric parameters of stage 5 CKD patients, compared with standard renal dietary advice, after three months of follow-up. Dietary intake, anthropometric measurements, physical activity, and blood samples were collected at baseline and after three months of intervention. Significant improvements were observed within the intervention group in body weight (1.5 kg [95% CI: 0.9 to 2.12 kg]) and BMI (0.54 kg/m² [95% CI: 0.31 to 0.77]; p-value between groups, 0.002 and 0.006, respectively). In the control group, significant decreases were observed in transferrin saturation (-5.04% [95% CI: -8.88 to -1.21]) and alpha-tocopherol levels (-3.31 umol/L [95% CI: -6.30 to -0.32]). We concluded that daily dietary intake of a specific renal nutritional complement in CKD patients with or at risk of malnutrition may prevent deterioration in nutritional parameters.

The worldwide prevalence of non-adherence to diet and fluid restrictions among hemodialysis patients: A systematic review and meta-analysis

BACKGROUND

Non-adherence to diet and fluid restrictions in hemodialysis (HD) patients can lead to undesired health outcomes. This systematic review and meta-analysis aim to estimate the pooled prevalence of non-adherence to diet and fluid restrictions in HD patients.

METHODS

Research papers from PubMed, CINAHL, and Google Scholar on non-adherence to diet and fluid restrictions in HD patients published between 2000 and 2020 were selected for this study. The methodological quality of each study was graded, and the estimates were pooled using the random-effects model of meta-analysis. Analyses of subgroups and meta-regression were carried out. Egger's test and visual analysis of the symmetry of funnel plots were used to assess the publication bias.

RESULTS

Eight hundred sixty-eight potential records were identified during the search. Twenty-three studies that met inclusion criteria were considered for meta-analysis and comprised 11,209 HD patients (mean age 55.85 years± SD 6.86, males 57.74%). The estimated worldwide prevalence of non-adherence to diet and fluid restrictions was 60.2% (95% CI: 47.3- 72.5) and 60.6% (95% CI: 50- 70.7), respectively. The meta-regression found that the income category was negatively, and the risk of bias score was positively associated with the prevalence of non-adherence to fluid restrictions (p<0.05). The funnel plot of studies included pooling the prevalence of non-adherence to fluid restrictions revealed asymmetry, and a significant publication bias was also noted as assessed by Egger's test (P = 0.004). However, the pooled estimate should be interpreted with caution because the prevalence of individual studies varies considerably due to methodological or measurement discrepancies.

CONCLUSION

The pooled prevalence of non-adherence to diet (47.3 - 72.5%) and fluid (50 - 70.7%) restrictions were substantially high. The health care team must recognize the factors and barriers influencing adherence behavior and develop holistic interventions to improve it.

Non-adherence to hemodialysis regimens among patients on maintenance hemodialysis in sub-Saharan Africa: an example from Cameroon

Background

Non-adherence (NA) to hemodialysis regimens is one of the contributors to the high morbidity and mortality observed in patients with end-stage kidney disease (ESKD). We aimed to determine the prevalence and predictors of NA to hemodialysis (HD) regimens among patients on maintenance HD in Cameroon.

Methods

A cross-sectional study in two HD centers in Cameroon was conducted from January to February 2016. Consenting patients on HD for ≥3 months were included. NA to fluid restriction was defined as a mean interdialytic weight gain (IDWG) in the past month >5.7% of the dry weight, NA to dietary restriction as a pre dialysis serum phosphorus >5.5 mg/dl in a patient on phosphate binders and who is well-nourished, and NA to HD sessions as skipping at least one session in the past month. The study was approved by the institutional ethics board.

Results

A total of 170 (112 males) participants with a median age of 49 years (range 14–79) were included. The median dialysis vintage was 35 months (range 3–180 months). The prevalence of NA was 15.3% to fluid restriction, 26.9% to dietary restriction, and 21.2% to dialysis sessions. Age ≤49 years (p = .006, OR: 5.07, 95% CI: 1.59–16.20) and unmarried status (p = .041, OR: 2.63, 95% CI: 1.04–6.66) were independently associated with NA to fluid restrictions. No factor was associated with NA to dietary restrictions and HD sessions.

Conclusions

NA to HD regimens is common amongst patients in Cameroon. Younger age and being unmarried were the predictors of NA to fluid restriction.

Adequate Management of Phosphorus in Patients Undergoing Hemodialysis Using a Dietary Smartphone App: Prospective Pilot Study

Background

The renal diet is complex and requires alterations of the diet and careful monitoring of various nutrients. Elevated serum phosphorus is common among patients undergoing hemodialysis, and it is associated with many complications. Smartphone technology could be used to support both dietitians and patients by providing a source of accessible and reliable information.

Objective

The aim of this pilot is to assess the potential efficacy of an intervention using the educational and self-monitoring mobile app KELA.AE on the phosphorous management in hemodialysis patients. Results will be used to improve both the app and a planned, rigorous large-scale trial intended to assess app efficacy.

Methods

This is a prospective pilot study performed at the hemodialysis unit of Al Qassimi Hospital (Emirate of Sharjah, United Arab Emirates). All patients were assessed for eligibility and, based on inclusion criteria, considered for enrollment. Participants met with a dietitian once a week and used the mobile app regularly for 2 weeks. Outcomes (knowledge, self-reported nonadherence, dietary intake, anthropometry, and biochemical data) were measured. This pilot is reported as per guidelines for nonrandomized pilot and feasibility studies and in line with the CONSORT (Consolidated Standards of Reporting Trials) 2010 checklist for reporting pilot or feasibility trials.

Results

Of 26 subjects, 23 successfully completed the pilot. Patient dietary knowledge about phosphorous management improved from 51.4% (SD 13.9) to 68.1% (SD 13.3) after intervention with a large effect size (d=1.22, 95% CI 0.59 to 1.85). Dietary protein intake increased from a mean of 0.9 g/kg (SD 0.3) per day to a mean of 1.3 g/kg (SD 0.5) per day with a large effect size (d=1.07, 95% CI 0.45 to 1.69). Phosphorus to protein ratio dropped from a mean of 18.4 mg/g protein to 13.5 mg/g protein with a large effect size (d=0.83, 95% CI 0.22 to 1.43). There was no evidence of change in phosphorous intake, self-reported nonadherence, and serum phosphorus.

Conclusions

The findings of this prospective pilot reveal the potential efficacy of a smartphone app as a supportive nutrition education tool for phosphorus management in patients undergoing hemodialysis. This pilot study showed that the KELA.AE app has the potential to improve knowledge and dietary choices. A rigorous randomized controlled trial should be performed to evaluate the efficacy, assessing app use of a long-term intervention.

Development of the Adherence to Healthy Behaviors Scale

Adherence to healthy behaviors is a protective factor in the disease progression of chronic kidney disease (CKD). Measuring adherence can lead to the recognition of unhealthy behaviors and the suggestion of programs to prevent poor health outcomes. An assessment measurement for patients with CKD not requiring dialysis was developed and psychometrically tested. A convenience sample (n = 330) of patients with CKD attending a nephrology clinic in southern Taiwan completed the 13-item Adherence to Healthy Behaviors Scale (AHBS). A principal axis factor analysis and a parallel analysis demonstrated a three-factor structure accounting for 47.16% of the total variance. Confirmatory factor analysis indicated a good model fit. The criterion-related validity was adequate (r = .51; p < .000), with a Cronbach's alpha of .70; the test-retest reliability demonstrated good stability (r = .70; p < .000). The AHBS is a valid, reliable instrument to assess adherence to healthy behaviors among patients with CKD.

Factors associated with adherence to dietary prescription among adult patients with chronic kidney disease on hemodialysis in national referral hospitals in Kenya: a mixed-methods survey

Introduction

Adherence to dietary prescriptions among patients with chronic kidney disease is known to prevent deterioration of kidney functions and slow down the risk for morbidity and mortality. This study determined factors associated with adherence to dietary prescription among adult patients with chronic kidney disease on hemodialysis.

Methods

A mixed-methods study, using parallel mixed design, was conducted at the renal clinics and dialysis units at the national teaching and referral hospitals in Kenya from September 2018 to January 2019. The study followed a QUAN + qual paradigm, with quantitative survey as the primary method. Adult patients with chronic kidney disease on hemodialysis without kidney transplant were purposively sampled for the quantitative survey. A sub-sample of adult patients and their caregivers were purposively sampled for the qualitative survey. Numeric data were collected using a structured, self-reported questionnaire using Open Data Kit "Collect software" while qualitative data were collected using in-depth interview guides and voice recording. Analysis on STATA software for quantitative and NVIV0 12 for qualitative data was conducted. The dependent variable, "adherence to diet prescription" was analyzed as a binary variable. P values < 0.1 and < 0.05 were considered as statistically significant in univariate and multivariate logistic regression models respectively. Qualitative data were thematically analyzed.

Results

Only 36.3% of the study population adhered to their dietary prescriptions. Factors that were independently associated with adherence to diet prescriptions were "flexibility in the diets" (AOR 2.65, 95% CI 1.11-6.30, P 0.028), "difficulties in following diet recommendations" (AOR 0.24, 95% CI 0.13-0.46, P < 001), and "adherence to limiting fluid intake" (AOR 9.74, 95% CI 4.90-19.38, P < 0.001).

Conclusions

For patients with chronic kidney disease on hemodialysis, diet prescriptions with less restrictions and requiring minimal extra efforts and resources are more likely to be adhered to than the restrictive ones. Patients who adhere to their fluid intake restrictions easily follow their diet prescriptions. Prescribed diets should be based on the individual patient's usual dietary habits and assessed levels of challenges in using such diets. Additionally, diet adherence messages should be integrated with fluid limitation messages. Further research on understanding patients' adherence to fluid restriction is also suggested.

Depressive symptoms and dietary non-adherence among end stage renal disease patients undergoing hemodialysis therapy: systematic review

Background

Research suggests that patients with end stage renal disease undergoing hemodialysis have a higher rate of depression and dietary non adherence leading to hospitalization and mortality. The purpose of this review was to synthesize the quantitative evidence on the relationship between depressive symptoms and dietary non adherence among end stage renal disease (ESRD) patients receiving hemodialysis.

Methods

A systematic review was undertaken. Three electronic databases were searched including PubMed, CINHAL and Web of Science. Only quantitative studies published between 2001 and 2016 were included in the review.

Result

A total of 141 publications were reviewed during the search process and 28 articles that fulfilled the inclusion criteria were included in the review. Eleven studies (39.3%) reported on the prevalence of depressive symptoms or depression and its effect on patient outcomes. Ten studies (35.7%) focused on dietary adherence/non adherence in patients with ESRD and the remaining seven (25%) articles were descriptive studies on the relationship between depressive symptoms and dietary non adherence in patients with ESRD receiving hemodialysis. The prevalence of depressive symptoms and dietary non adherence ranged as 6–83.49% and from 41.1–98.3% respectively. Decreased quality of life & increased morbidity and mortality were positively associated with depressive symptoms. Other factors including urea, hemoglobin, creatinine and serum albumin had also association with depressive symptoms. Regarding dietary non adherence, age, social support, educational status, behavioral control and positive attitudes are important factors in ESRD patients receiving hemodialysis. Having depressive symptoms is more likely to increase dietary non adherence.

Conclusion

Depressive symptoms and dietary non adherence were highly prevalent in patients with end stage renal disease receiving hemodialysis therapy. Nearly all of the articles that examined the relationship between depressive symptoms and dietary non adherence found a significant association. Future research using experimental or longitudinal design and gold standard measures with established cut-points is needed to further explain the relationship.

Prediction of Nonadherence and Renal Prognosis by Pre-Transplantation Serum Phosphate Levels

Background

Identifying characteristics of patients at high risk of poor adherence before transplantation would be advantageous. However, the optimal approach for characterizing such patients remains unknown. We aimed to evaluate the association between factors for hemodialysis nonadherence and post-transplant renal prognosis. We hypothesized that these factors would influence post-transplantation adherence and worsen renal prognosis.

Material/Methods

We reviewed patients on hemodialysis who underwent kidney transplantation at our hospital between 2000 and 2017 to identify risk factors associated with poor prognosis. The patients’ background and pre-transplantation data, known hemodialysis nonadherence factors, serum phosphate and potassium levels, and interdialytic weight gains were evaluated. The primary endpoint was renal death. We also evaluated the fluctuation of calcineurin inhibitor concentration and weight gain after transplantation.

Results

Seventy-seven patients were eligible, and the mean observational period was 83.2 months (standard deviation, 50.5). Thirteen patients reached the endpoint. Cox proportional hazards regression analysis showed that pre-transplantation serum phosphate level was a risk factor for renal death (p<0.05), while serum potassium levels and weight gain were not. In addition, fluctuation of calcineurin inhibitor concentration was observed in patients with higher phosphate levels before transplantation (p=0.03). Weight gain after transplantation was not associated with the hemodialysis nonadherence factors.

Conclusions

High pre-transplantation serum phosphate levels are considered to represent poor drug adherence and/or an unhealthy lifestyle. Patient education that conveys the importance of adhering to medications and provides nutritional guidance is crucial for improving post-transplantation renal prognosis.

The combined diabetes and renal control trial (C-DIRECT) - a feasibility randomised controlled trial to evaluate outcomes in multi-morbid patients with diabetes and on dialysis using a mixed methods approach

BACKGROUND

This cluster randomised controlled trial set out to investigate the feasibility and acceptability of the "Combined Diabetes and Renal Control Trial" (C-DIRECT) intervention, a nurse-led intervention based on motivational interviewing and self-management in patients with coexisting end stage renal diseases and diabetes mellitus (DM ESRD). Its efficacy to improve glycaemic control, as well as psychosocial and self-care outcomes were also evaluated as secondary outcomes.

METHODS

An assessor-blinded, clustered randomised-controlled trial was conducted with 44 haemodialysis patients with DM ESRD and ≥ 8% glycated haemoglobin (HbA1c), in dialysis centres across Singapore. Patients were randomised according to dialysis shifts. 20 patients were assigned to intervention and 24 were in usual care. The C-DIRECT intervention consisted of three weekly chair-side sessions delivered by diabetes specialist nurses. Data on recruitment, randomisation, and retention, and secondary outcomes such as clinical endpoints, emotional distress, adherence, and self-management skills measures were obtained at baseline and at 12 weeks follow-up. A qualitative evaluation using interviews was conducted at the end of the trial.

RESULTS

Of the 44 recruited at baseline, 42 patients were evaluated at follow-up. One patient died, and one discontinued the study due to deteriorating health. Recruitment, retention, and acceptability rates of C-DIRECT were generally satisfactory HbA1c levels decreased in both groups, but C-DIRECT had more participants with HbA1c < 8% at follow up compared to usual care. Significant improvements in role limitations due to physical health were noted for C-DIRECT whereas levels remained stable in usual care. No statistically significant differences between groups were observed for other clinical markers and other patient-reported outcomes. There were no adverse effects.

CONCLUSIONS

The trial demonstrated satisfactory feasibility. A brief intervention delivered on bedside as part of routine dialysis care showed some benefits in glycaemic control and on QOL domain compared with usual care, although no effect was observed in other secondary outcomes. Further research is needed to design and assess interventions to promote diabetes self-management in socially vulnerable patients.

TRIAL REGISTRATION NUMBER

Trial registered with the International Standard Randomised Controlled Trial (ISRCTN10546597). Registered 12 September 2016 (Retrospectively registered).

Cultural adaptation of The End-Stage Renal Disease Adherence Questionnaire for hemodialysis patients

ABSTRACT Objective: To describe the stages in the cultural adaptation of "The End-Stage Renal Disease Adherence Questionnaire" for use in Brazil. Method: A descriptive, transversal study with a quantitative approach. The cultural adaptation followed the steps of translation, professional committee, back translation, panel of patients and pretest. Results: the translation stage created a version in Portuguese that was analyzed by specialists, who suggested alterations in the title, seven sentences in the questions and three sets of answers. In the panel of patients phase, two questions were altered. The back translation considered the original characteristics of the instrument were maintained, likewise there were no modifications in the pretest phase. The third version written in Portuguese was considered to be the final version of the questionnaire. Conclusion: this instrument should facilitate nursing care management in hemodialysis, enabling the monitoring of adherence among these patients and also contribute to improving the indicators of morbidity and mortality.

An integrative review of the methodology and findings regarding dietary adherence in end stage kidney disease

BACKGROUND

Dietary modification is an important component of the management of end stage kidney disease (ESKD). The diet for ESKD involves modifying energy and protein intake, and altering sodium, phosphate, potassium and fluid intake. There have been no comprehensive reviews to date on this topic. The aims of this integrative review were to (i) describe the methods used to measure dietary adherence (ii) determine the rate of dietary adherence and (iii) describe factors associated with dietary adherence in ESKD.

METHODS

The Web of Science and Scopus databases were searched using the search terms 'adherence' and 'end stage kidney disease'. Of the 787 potentially eligible papers retrieved, 60 papers of 24,743 patients were included in this review. Of these papers, 44 reported the rate of dietary adherence and 44 papers described factors associated with adherence.

RESULTS

Most of the evidence regarding dietary adherence is derived from studies of hemodialysis patients (72% of patients). The most common method of measuring dietary adherence in ESKD was subjective techniques (e.g. food diaries or adherence questionnaires). This was followed by indirect methods (e.g. serum potassium, phosphate or interdialytic weight gain). The weighted mean adherence rate to ESKD dietary recommendations was 31.5% and 68.5% for fluid recommendations. Adherence to protein, sodium, phosphate, and potassium recommendations were highly variable due to differences in measurement methods used, and were often derived from a limited evidence base. Socioeconomic status, age, social support and self-efficacy were associated with dietary adherence. However, factors such as taste, the impact of the diet on social eating occasions; and dietetic staffing also appear to play a role in dietary adherence.

CONCLUSION

Dietary adherence rates in people with ESKD are suboptimal. Further research is required on dietary adherence in patients with ESKD from different social, educational, economic and ethnic groups. This research may identify other factors which may impact upon adherence, and could be used to inform the design of future strategies to improve dietary adherence. Future research that reports not just the rate of adherence to individual components of the nutrient prescription but also the overall quality of the diet would be useful.

Validation of the adherence questionnaire for Brazilian chronic kidney disease patients under hemodialysis

ABSTRACT Objective: To validate the evaluation questionnaire on adherence of chronic kidney disease (CKD) patients under hemodialysis. Method: We verified the following psychometric properties of the instrument: reliability (stability and internal consistency) and validity (face, content, and construct). Results: The intraclass correlation coefficient reached a value of 0.98 for the adherence questions and 0.91 for the perception questions. Regarding the kappa of the 14 questions examined, 12 had a value > 0.8, whereas the Cronbach's alpha had a value of 0.57. Experts ensured the face and content validity of the instrument, giving it an overall content validity index of 0.96. Construct validity, analyzed by Mann-Whitney test, was achieved as all domains showed a significant association with p<0.01. Conclusion: We verified, by the presented results, that the instrument has been validated for use in Brazil.

A Modified Version of the Greek Simplified Medication Adherence Questionnaire for Hemodialysis Patients

Non-adherence to the therapeutic regimen is an increasingly growing problem especially among patients undergoing hemodialysis. The aim of this study was to modify the Greek version of Simplified Medication Adherence Questionnaire (GR-SMAQ) for patients undergoing hemodialysis (GR-SMAQ-HD) and explore its validity and reliability. Between June 2016 and November 2016 a group of patients undergoing hemodialysis (N=107) completed the Greek version of SMAQ. The study was carried out in three Dialysis Units of Hospitals of Athens and Peloponnese region, Greece. The form of GR-SMAQ was modified specifically for renal patients while four additional items were added so as the tool study all aspects of adherence to hemodialysis regimen. Construct validity was checked through exploratory factor analysis with principal Component Analysis with the Equamax method. Test-retest reliability and internal consistency were tested. Statistical analysis was performed using the IBM SPSS Statistics version 21. The significance level was set up at 5%. The Greek version of SMAQ for patients undergoing hemodialysis includes eight questions. Three factors emerged from factor analysis. Cronbach’s a coefficient was 0.742 for the whole scale and for each subscale was for Medication Adherence 0.75, for Attendance at hemodialysis session 0.856 and for Diet/Fluid restriction was 0.717. The total mean score was 6.29 (±1.82). GR-SMAQ-HD is a reliable and valuable tool that can be used by hemodialysis nurses and students of nursing for detection of adherence levels in clinical practice.

Psychosocial Factors Predict Nonadherence to PD Treatment: A Hong Kong Survey

Background

Nonadherence to hand hygiene and aseptic regimen, dialysis environment guidelines, and catheter and exit-site care guidelines are risk factors of peritonitis. However, little is known about the psychosocial factors that account for the nonadherent behavior of patients undergoing peritoneal dialysis (PD). Applying the health belief model, this study seeks to enhance the understanding of psychosocial influences on patients’ nonadherent behavior to the 3 regimen components.

Methods

Through referrals by 7 Hong Kong renal patient support groups, we surveyed patients undergoing PD treatment.

Results

A total of 244 Hong Kong PD patients completed the questionnaires. About 90% of the patients reported no deviation from catheter and exit-site care guidelines. However, the nonadherence rates of hand hygiene and aseptic regimen and of dialysis environment guidelines were 30.3% and 23%, respectively. Longer time on PD treatment and lower family monthly income were associated with nonadherence to dialysis environment guidelines. Employed patients tended toward nonadherence to catheter and exit-site care guidelines twice as much as unemployed patients. Of the 5 health beliefs, perceived benefits, perceived barriers, and efficacy belief were significant predictors of nonadherence to the 3 regimen components.

Conclusions

The findings of this study inform the design of intervention to change patients’ behavior in regimen nonadherence for preventing peritonitis. To identify the target audience for adherence intervention based on the 3 regimen components, the results suggest dividing patients into subgroups according to their sociodemographic background. To foster behavioral change, health communicators should address patients’ health beliefs when formulating intervention strategies.

Factors Associated with Chronic Kidney Disease Self-Management

Chronic kidney disease (CKD) affected 26 million U.S. adults. Many end-stage CKD patients undergoing hemodialysis experience self-management challenges. However, factors associated with CKD self-management are under-identified. This article describes a mixed-methods study to identify factors associated with self-management in end-stage CKD patients undergoing hemodialysis. A total of 107 patients age 50 and older were interviewed. Overall, participants had low mean scores for exercise (2.46), communication with physicians (2.50), and cognitive symptom management (0.89) and were adherent for greater than 11 days in a 2-week period with fluid (11.86) and diet (11.65) regimens. There were statistically significant age group differences in the self-management behavior of fluid adherence (p < .05) and communication with physicians (p = .05). None of the respondents discussed communicating with their physicians or cognitive symptom management, yet 90% and 77% of the respondents reported engaging in these behaviors, respectively. The findings from this study support the need for public health social work interventions aimed at increasing self-management behaviors in end-stage CKD patients.

Association of herbal and dietary supplements with progression and complications of chronic kidney disease: A prospective cohort study

AIM

To determine associations between herbal and dietary supplement (HDS) use and the progression of chronic kidney disease (CKD), and associations of HDS with uncontrolled hyperphosphataemia in patients with CKD.

METHOD

The cohort study recruited 406 Thai outpatients with stage 3-5 CKD from two kidney clinics of which 357 were followed up over 12 months. Patients receiving renal replacement therapy prior to recruitment were excluded. Participants were interviewed regarding their HDS use, dietary intake and conventional medication adherence using a questionnaire. The primary outcome was a composite of a decline of at least 5 mL/min per 1.73 m² per year of estimated glomerular filtration rate and end stage renal disease. Serum creatinine, serum levels of potassium and phosphate were extracted from their medical notes over the 12 months. χ² tests and multiple logistic regression analyses were performed to ascertain any associations.

RESULTS

Despite no association between HDS and the progression of CKD over a one-year period (adjusted odds ratio (OR) 1.16, 95% confidence interval (CI) 0.66-2.03), two patients had acute kidney injury, which may be related to an unknown Chinese herbal medicine, or river spiderwort combined with diclofenac reported in the medical notes. The use of HDS was associated with uncontrolled hyperphosphataemia (adjusted OR 3.53, 95%CI 1.20-10.43).

CONCLUSIONS

The findings suggest that HDS are likely to be related to acute kidney injury rather than the progression of CKD in Thai patients with CKD. The products were associated with uncontrolled hyperphosphataemia. Patients who have CKD and use HDS should be closely monitored regarding their kidney function and electrolytes.

Improving outcomes in patients with coexisting multimorbid conditions-the development and evaluation of the combined diabetes and renal control trial (C-DIRECT): study protocol

INTRODUCTION

Diabetes mellitus (DM) is the most common cause of end-stage renal disease (ESRD). Patients with diabetes on dialysis have worse clinical outcomes and increased psychological burden. The need to manage the combined treatment demands for both conditions is particularly challenging yet there is paucity of data of the barriers preventing optimal management to combined therapy for diabetes and kidney failure. The study aims to explore needs of patients and develop an intervention to enable people with diabetes and ESRD to better manage both their conditions.

METHODS AND ANALYSIS

A two-phase study comprising a mixed method observational study (phase I) and a feasibility trial (phase II). Phase I will seek to document outcomes and needs of the population (patients with DM-ESRD) and seek input on preferred delivery/implementation for the programme. Data will be collected with in-depth interviews with patients, caregivers and healthcare providers (N=50), and from a questionnaire-based survey (N=170). Phase 2 will build on these data to design and test the feasibility of a practical, low-intensity, clinic-integrated intervention using a self-management paradigm. The intervention will primarily seek to support behavioural change so as to improve adherence and clinical outcomes for DM as well as for ESRD. For the feasibility trial, we will be evaluating acceptability, retention and completion rates of the programme.

ETHICS AND DISSEMINATION

The study protocol has been approved by the local ethics committee and written informed consent is required from every participant. Findings will be disseminated through journals, conferences and will be used to create a fully manualised intervention (materials) and training course for facilitators.

Adherence to diet and fluid restriction of individuals on hemodialysis treatment and affecting factors in Turkey

AIM

This study was conducted to determine adherence to diet and fluid restriction in hemodialysis-treated individuals and the affecting factors in Turkey.

METHODS

This descriptive study was conducted between 15 October 2010 and 15 January 2011 in subjects who voluntarily agreed to participate in the study from three dialysis centers in a city located in the Central Anatolia Region of Turkey. One hundred and twenty-one individuals treated with hemodialysis made up the study sample. The data were collected using a questionnaire consisting of 41 questions and the Dialysis Diet and Fluid Non-adherence Questionnaire. The data were evaluated with percentage, median, Mann-Whitney U-test, Kruskal-Wallis test, Student's t-test in independent samples and Spearman's rank correlation coefficient.

RESULTS

The authors found that 98.3% of the individuals experienced non-adherence to diet and 95.0% with fluid restriction. The authors found a weak and negative relationship between calcium levels and non-adherence to fluid restriction, a weak relationship between phosphorus levels and diet non-adherence frequency and degree and the fluid non-adherence frequency scores, and a moderate positive relationship between phosphorus levels and fluid restriction non-adherence degree scores (P < 0.05).

CONCLUSION

Based on these results, regular training and information regarding diet and fluid restriction must be provided to individuals aged 21-35 years with no one in the family to help with their care, those who consumed salted food, or had interdialytic weight gain of 4.5 kg or more.

The Relationship Between Social Support and Adherence of Dietary and Fluids Restrictions among Hemodialysis Patients in Iran

INTRODUCTION

Patient's noncompliance dietary and fluids intake can lead to a build-up of toxic fluids and metabolic end-products in the blood stream which may result in an increased morbidity and premature death. The aim of the study is investigate relationship between the social support and adherence to dietary and fluid restrictions in hemodialysis patients.

METHODS

In this correlational study upon 237 hemodialysis patients, the data was collected with the dialysis diet and fluids non-adherences hemodialysis questionnaire (DDFQ), and the multidimensional scale of perceived Social Support (MSP). Interdialytic weight gain, predialytic serum potassium levels, and predialytic serum phosphate levels was considered as biochemical indicators of dietary and fluid adherence. Data were analyzed by SPSS Ver.11.5.

RESULTS

About 41.1% of patients reported non-adherence to diet and 45.2% of them reported non-adherence to fluid. Frequency of non-adherence to fluid was more common in patients. The highest level of perceived support was the family support 11.19 (1.34). There was a significant relationship between social support and adherence to dietary and fluid restrictions. Noncompliances to dietary and fluid restrictions were related to laboratory results.

CONCLUSION

This way those patients who more supported had more adherences of diet and fluid restrictions and had lower level of phosphorus and potassium in laboratory results. Nurses have the main role to identify different methods providing social support for patients, also to encourage the families to support their hemodialysis patients.

Non-adherence in patients on peritoneal dialysis: a systematic review

BACKGROUND

It has been increasingly recognized that non-adherence is an important factor that determines the outcome of peritoneal dialysis (PD) therapy. There is therefore a need to establish the levels of non-adherence to different aspects of the PD regimen (dialysis procedures, medications, and dietary/fluid restrictions).

METHODS

A systematic review of peer-reviewed literature was performed in PubMed, PsycINFO and CINAHL databases using PRISMA guidelines in May 2013. Publications on non-adherence in PD were selected by two reviewers independently according to predefined inclusion and exclusion criteria. Relevant data on patient characteristics, measures, rates and factors associated with non-adherence were extracted. The quality of studies was also evaluated independently by two reviewers according to a revised version of the Effective Public Health Practice Project assessment tool.

RESULTS

The search retrieved 204 studies, of which a total of 25 studies met inclusion criteria. Reported rates of non-adherence varied across studies: 2.6-53% for dialysis exchanges, 3.9-85% for medication, and 14.4-67% for diet/fluid restrictions. Methodological differences in measurement and definition of non-adherence underlie the observed variation. Factors associated with non-adherence that showed a degree of consistency were mostly socio-demographical, such as age, employment status, ethnicity, sex, and time period on PD treatment.

CONCLUSION

Non-adherence to different dimensions of the dialysis regimen appears to be prevalent in PD patients. There is a need for further, high-quality research to explore these factors in more detail, with the aim of informing intervention designs to facilitate adherence in this patient population.

Effects of post-discharge nurse-led telephone supportive care for patients with chronic kidney disease undergoing peritoneal dialysis in China: a randomized controlled trial

BACKGROUND

Patients with end-stage renal failure (ESRF) need integrated health care to maintain a desirable quality of life. Studies suggest that post-discharge nurseled telephone support has a positive effect for patients suffering from chronic diseases. But the post-discharge care is under-developed in mainland China and the effects of post-discharge care on patients with peritoneal dialysis have not been conclusive.

AIM

The purpose of this study is to test the effectiveness of postdischarge nurse-led telephone support on patients with peritoneal dialysis in mainland China.

METHODS

A randomized controlled trial was conducted in the medical department of a regional hospital in Guangzhou. 135 patients were recruited, 69 in the study group and 66 in the control group. The control group received routine hospital discharge care. The study group received post-discharge nurse-led telephone support. The quality of life (Kidney Disease Quality of Life Short Form, KDQOL-SF), blood chemistry, complication control, readmission and clinic visit rates were observed at three time intervals: baseline before discharge (T1), 6 (T2) and 12 (T3) weeks after discharge.

RESULTS

Statistically significant effects were found for symptom/problem, work status, staff encouragement, patient satisfaction and energy/fatigue in KDQOL-SF and 84-day (12-week) clinic visit rates between the two groups. The study group had more significant improvement than the control group for sleep, staff encouragement at both T2 and T3, and pain at T2 and patient satisfaction at T3. No significant differences were observed between the two groups for the baseline measures, other dimensions in KDQOL-SF, blood chemistry, complication control, readmission rates at all time intervals and clinic visit rates at the first two time intervals.

CONCLUSIONS

Post-discharge nurse-led telephone support for patients undergoing peritoneal dialysis is effective to enhance patients' well-being in the transition from hospital to home in mainland China.

Health Beliefs Related to Salt-Restricted Diet in Patients on Hemodialysis: Psychometric Evaluation of the Turkish Version of the Beliefs About Dietary Compliance Scale

PURPOSE

The aim of this study was to evaluate the reliability and validity of the Turkish version of the Beliefs about Dietary Compliance Scale (BDCS-T).

METHODS

This methodological study enrolled a sample of 140 patients. Data were collected by using a questionnaire form, the BDCS-T, and the Dialysis Diet and Fluid Restrictions Nonadherence Questionnaire. Descriptive statistics, the one-sample Kolmogorov-Smirnov test, Mann-Whitney U test, correlation coefficients, and psychometric tests were used for the analysis of data.

RESULTS

The factor analysis confirmed that the BDCS-T had a two-factor structure (perceived benefits and perceived barriers) explaining 58.7% of the total variance. The BDCS-T had acceptable internal consistency (Cronbach's alpha coefficients: perceived benefits = .91; perceived barriers = .66), test-retest reliability (intraclass correlation coefficients: perceived benefits = .93; perceived barriers = .79), concurrent validity with the Dialysis Diet and Fluid Restrictions Nonadherence Questionnaire scores, and known group validity with intensity of diet nonadherence.

CONCLUSIONS

The BDCS-T was found to be a reliable and valid tool for assessing the beliefs related to salt-restricted diet in patients on hemodialysis.

IMPLICATIONS FOR PRACTICE

Nurses are recommended to make tailored interventions by taking the benefits and barriers that the patients perceive toward low-salt dietary adherence into account.

Nonadherence in dialysis patients: prevalence, measurement, outcome, and psychological determinants

Nonadherence to aspects of the management of End-Stage Kidney Disease (ESKD) is common. Estimates of nonadherence vary with assessment method. Whilst readily available and free from report bias, physiological proxies-frequently used as measures of adherence-are often confounded by clinical factors including residual kidney function and dialysis adequacy. Despite variation in estimates of its prevalence, it is clear that suboptimal adherence to dialysis prescriptions, medication and diet can lead to adverse clinical outcomes. Several factors can help explain nonadherence in ESKD including mood, self-efficacy, social support, illness, and treatment perceptions. Psychological interventions have been shown to improve ESKD adherence, yet achieving long-term behavior change remains challenging. Identifying individuals who struggle to adhere to aspects of the dialysis regime, and tailoring theory-led interventions to improve and support adherence is a clear clinical need requiring further empirical enquiry.

Objectively measured and self-reported nonadherence among Jordanian patients receiving hemodialysis

This study assessed nonadherence behavior to diet and fluid restrictions and examined the association between nonadherence behavior and demographic and clinical characteristics among Jordanian adults with end-stage renal disease receiving hemodialysis. A descriptive, correlational, cross-sectional design was used. The patients were interviewed within the first 90 minutes of dialysis session using the Dialysis Dietary and Fluid Nonadherence questionnaire (DDFQ). Demographic and clinical data were gathered from the patients and the medical records. The objective markers of dietary and fluid nonadherence (potassium, phosphorus, blood urea nitrogen, and interdialytic weight gain) were followed for the last 3 months, and average values were calculated. Diet and fluid nonadherence was common among Jordanian hemodialysis patients as 17-80% were nonadherent using different measures. Significant strong associations were found between the DDFQ subscales, and significant moderate associations between DDFQ and objective markers of dietary and fluid nonadherence. Youth, male gender, smokers, prolonged dialysis vintage, and less residual renal function were associated with nonadherence regardless of the measures used. There was substantial consistency between the DDFQ and objective measures of dietary and fluid nonadherence among Jordanian adults with end-stage renal disease receiving hemodialysis. Future interventional research should incorporate DDFQ and objective markers to measure dietary and fluid nonadherence and health-related outcomes.

Determinants of compliance behaviours among patients undergoing hemodialysis in Malaysia

Background

Patients with end stage renal disease often fail to follow prescribed dietary and fluid regimen, leading to undesirable outcomes. This study aimed to examine and identify factors influencing dietary, fluid, medication and dialysis compliance behaviours in patients undergoing hemodialysis.

Methods

This was a cross-sectional study which employed purposive sampling design. A total of 188 respondents were recruited from 14 dialysis centres in Malaysia between 2008–2011. Self-reported compliance behaviours and biochemical measurements were used as evaluation tools.

Results

Compliance rates of dietary, fluid, medication and dialysis were 27.7%, 24.5%, 66.5% and 91.0%, respectively. Younger, male, working patients and those with longer duration on hemodialysis were found more likely to be non-compliant. Lacks of adequate knowledge, inadequate self-efficacy skills, forgetfulness and financial constraints were the major perceived barriers towards better compliance to fluid, dietary, medication and dialysis, respectively.

Conclusions

Healthcare professionals should recognise the factors hindering compliance from the patients' perspective while assisting them with appropriate skills in making necessary changes possible.

Depressive symptoms and dietary adherence in patients with end-stage renal disease

Depressive symptoms may be associated with fluid and dietary non adherence which could lead to poorer outcomes. The purpose of this study was to examine the relationship between depressive symptoms and fluid and dietary adherence in 100 patients with end-stage renal disease (ESRD) receiving haemodialysis. A descriptive, cross-sectional design with a convenience sample of 100 patients with ESRD receiving maintenance haemodialysis completed instruments that measured self-reported depressive symptoms and perceived fluid and dietary adherence. Demographic and clinical data and objective indicators of fluid and diet adherence were extracted from medical records. As many as two-third of these subjects exhibited depressive symptoms and half were non adherent to fluid and diet prescriptions. After controlling for known covariates, patients determined to have moderate to severe depressive symptoms were more likely to report non adherence to fluid and diet restrictions. Depressive symptoms in patients with ESRD are common and may contribute to dietary and fluid non adherence. Early identification and appropriate interventions may potentially lead to improvement in adherence of these patients.

An exploration of the relationship between adherence with dietary sodium restrictions and health beliefs regarding these restrictions in Irish patients receiving haemodialysis for end-stage renal disease

AIMS

To measure adherence levels with dietary restrictions in Irish patients with end-stage renal disease receiving haemodialysis and to explore the relationships between adherence with dietary sodium restrictions and health beliefs in relation to following these restrictions in this group.

BACKGROUND

Non-adherence to medical regimes is an important healthcare issue and an ever-present problem, particularly in patients with a chronic illness. The literature revealed a lack of studies measuring adherence with the sodium component of the renal dietary restrictions and associated factors; despite the fact that adherence with sodium restrictions is essential to the optimal management of end-stage renal disease. Furthermore, despite increased emphasis on 'the patients' view' in healthcare no study to date has contextualised health beliefs and adherence in end-stage renal disease from an Irish perspective.

DESIGN

A quantitative, descriptive, correlational design was employed using the Health Belief Model as a theoretical framework.

METHODS

A convenience sample (n = 79) was recruited from the haemodialysis units of a large hospital. Data were collected using self-report questionnaires. Data were analysed using descriptive and correlational statistics.

RESULTS

Non-adherence with dietary restrictions was a problem among a proportion of the sample. Greater adherence levels with dietary sodium restrictions were associated with greater 'perceived benefits' and fewer 'perceived barriers.'

CONCLUSION

For the Irish patient, beliefs in relation to following a low sodium diet significantly affected adherence levels with this diet. This is an important finding as delineating key beliefs, particularly key barriers, facilitates an increased understanding of non-adherence for nurses.

RELEVANCE FOR CLINICAL PRACTICE

These findings have implications for the care of patients with end-stage renal disease in that they can provide guidance in terms of developing interventions designed to improve adherence.

Dietary and fluid adherence in Iranian hemodialysis patients

Adherence to fluid restrictions and dietary and medication guidelines is important for adequate management of hemodialysis (HD) patients. This study aimed at assessing the factors suggestive of adherence in uremic patients on HD. Two hundred HD patients were recruited by census method. Data on blood urea nitrogen (BUN), serum potassium and phosphate levels, and interdialytic weight gain (IWG) were collected from medical records and analyzed. Most of the patients (56%) did not adhere to fluid restrictions. Nonadherence to phosphate, potassium, and BUN levels was 25.5%, 5.5%, and 4.5%, respectively. In addition, there was a relationship between BUN, serum potassium and phosphate levels, and IWG with educational status (p ≤ .05). However, there was no correlation between BUN, serum potassium and phosphate levels, and IWG with sex, age, financial status, marital status, and duration of dialysis (p > .05). Based on the results, most of the patients adhered to dietary and medication regimens. Educational level of the patients was associated with adherence to fluid restriction. It was concluded that dietary compliance may be improved by using dietary counseling techniques and that education motivates patients to change and comply with dietary recommendations.

Investigating the health profile of patients with end-stage renal failure receiving peritoneal dialysis: a cluster analysis

AIM

To determine whether the patients with end stage renal failure can be differentiated into several subtypes based on five main variables.

BACKGROUND

There is a lack of interventional research linking to clinical outcomes among the patients with end stage renal failure in Hong Kong and with no clear evidence of differences in terms of their clinical/health outcomes and characteristics.

DESIGN

A cross-sectional survey.

METHOD

Data were collected using a structured questionnaire. One hundred and fifty-three patients with end stage renal failure were recruited during 2007 at three renal centres in Hong Kong. Five main variables were employed: predisposing characteristic, enabling resources, quality of life, symptom control and self-care adherence.

RESULTS

A cluster analysis yielded two clusters. Each cluster represented a different profile of patients with end stage renal failure. Cluster A consisted of 49.7% (n = 76) and Cluster B consisted of 50.3% (n = 77) of the patients. Cluster A patients, more of whom were women, were older, less educated, had higher quality of life scores, a better adherence rate and more had received nursing care supports than patients in Cluster B.

CONCLUSIONS

We have identified two groupings of patients with end stage renal failure who were experiencing unique health profile. Nursing support services may have an effect on patient health outcomes but only on a group of patients whose profile is similar to the patients in Cluster A and not for patients in Cluster B. A clear profile may help health care professional make appropriate strategies to target a specific group of patients to improve patient outcomes.

RELEVANCE TO CLINICAL PRACTICE

The identification of risk for future health-care use could enable better targeting of interventional strategies in these groups. The results of this study might provide health care professionals with a model to design specified interventions to improve life quality for each profile group.

Self-reported adherence to a therapeutic regimen among patients undergoing continuous ambulatory peritoneal dialysis

AIM

This paper is a report of a study conducted to examine self-reported adherence to a therapeutic regimen for continuous ambulatory peritoneal dialysis.

BACKGROUND

Studies of patients' adherence during dialysis have primarily focused on haemodialysis and have frequently yielded inconsistent results, which are attributed to the inconsistent tools used to measure adherence. Levels of adherence to all four components of the therapeutic regimen (i.e. dietary and fluid restrictions, medication, and the dialysis regimen) among patients receiving peritoneal dialysis have not been examined, especially from a patient perspective.

METHODS

A total population sample was used. A cross-sectional survey was carried out by face-to-face interviews in 2005 in one renal clinic in Hong Kong. A total of 173 patients undergoing peritoneal dialysis (56% of the total population) participated in the study.

RESULTS

Patients perceived themselves as more adherent to medication (83%; 95% confidence interval 77-88%) and dialysis (93%; 95% confidence interval 88-96%) prescriptions than to fluid (64%; 95% confidence interval 56-71%) and dietary (38%; 95% confidence interval 30-45%) restrictions. Those who were male, younger or had received dialysis for 1-3 years saw themselves as more non-adherent compared with other patients.

CONCLUSION

Healthcare professionals should take cultural issues into consideration when setting dietary and fluid restriction guidelines. Additional attention and support are required for patients who identify themselves as more non-adherent. To help patients live with end-stage renal disease and its treatment, qualitative research is required to understand how they go through the dynamic process of adherence.

Depressive symptoms and dietary nonadherence in patients with end-stage renal disease receiving hemodialysis: a review of quantitative evidence

Patients with end-stage renal disease (ESRD) who receive hemodialysis have high rates of psychosocial distress and nonadherence to diet prescription. The purpose of this study was to examine the quantitative research evidence about the effect of depressive symptoms on dietary adherence. A systematic search of the literature using MEDLINE, CINAHL, PubMed, and PsycINFO databases was performed for quantitative research studies. Forty-four studies met inclusion criteria and were included in this review. Nearly all studies supported an association between depressive symptoms and dietary adherence in patients with ESRD. Depressive symptoms were associated with dietary nonadherence in patients with ESRD.

Fluid compliance among patients having haemodialysis: can an educational programme make a difference?

AIM

This paper is a report of a study to examine the effectiveness of a patient education programme on fluid compliance as assessed by interdialytic weight gain, mean predialysis blood pressure and rate of fluid adherence.

BACKGROUND

Patients with end stage renal disease who receive haemodialysis are often non-compliant with their treatment regime, especially adherence to fluid restrictions.

METHOD

An exploratory study was conducted in 2004-05 using a quasi-experimental, single group design to examine the effectiveness of patient education on fluid compliance in a dialysis centre located in a major teaching hospital in Kuala Lumpur, Malaysia. Twenty-six patients with an interdialytic weight gain of greater than 2.5 kg were identified as non-compliant and recruited to the study. The intervention was carried out over a 2-month period and included teaching and weekly reinforcement about diet, fluids and control of weight gain.

FINDINGS

Patients' mean interdialytic weight gain decreased following the educational intervention from 2.64 kg to 2.21 kg (P < 0.05) and adherence to fluid restrictions increased from 47% to 71% following the intervention. Predialysis mean blood pressure did not improve following the intervention, although the maximum recording for predialysis systolic pressure dropped from 220 mmHg to 161 mmHg. Whilst no statistically significant associations were detected between interdialytic weight gain and age, educational level, marital status or employment status, women demonstrated a greater decrease in mean interdialytic weight gain than men.

CONCLUSION

Nephrology nurses often have long-term relationships with their patients and are ideally placed to provide ongoing education and encouragement, especially for those experiencing difficulties in adhering to fluid and dietary restrictions.

Nonadherence with diet and fluid restrictions and perceived social support in patients receiving hemodialysis

PURPOSE

To describe nonadherence with diet and fluid restrictions and the level of perceived social support in hemodialysis patients.

DESIGN

Descriptive survey. The data were obtained from 160 patients in three hemodialysis centers in Turkey between March 2006 and May 2006. Descriptive statistics, reliability analysis, correlations, and logistic regression analysis were conducted.

METHODS

Data were collected by using a personal data form, the Dialysis Diet and Fluid Nonadherence Questionnaire, and the Multidimensional Scale of Perceived Social Support.

RESULTS

Most patients showed nonadherence with diet and fluid restrictions. Family members were important providers of social support for patients. Significant factors affecting fluid nonadherence included age, marital status, and family and friend support. Marital status and family support were also the main variables affecting diet nonadherence.

CONCLUSIONS

The results of this study showed that nonadherence was more common among younger, married patients, and those with lower levels of perceived social support.

Fluid Intake Appraisal Inventory: development and psychometric evaluation of a situation-specific measure for haemodialysis patients' self-efficacy to low fluid intake

OBJECTIVE

Self-efficacy is an important determinant of health behaviour and reflects a person's belief about their capability to complete a given task. The relationship between self-efficacy and fluid adherence has been investigated, although limited attention has been given to measurement issues. The purpose of this study was to develop a measure of situation-specific self-efficacy for constructive fluid intake behaviour in haemodialysis patients, the Fluid Intake Appraisal Inventory (FIAI).

METHODS

Items were generated from an analysis of empirical studies available in the literature and exposed to an interpretability critique before haemodialysis patients confirmed sufficiency of each item. In a multi-centre study, data from 144 haemodialysis patients were collected regarding general self-efficacy, situation-specific self-efficacy, and estimated fluid consumption. Internal consistency, criterion-related validity, and structural validity were tested.

RESULTS

The FIAI was found to have high internal consistency (Cronbach alpha 0.96) and the theoretical assumptions for criterion-related validity and known-group validity were supported. Structural validity was not confirmed, however, because the theoretically hypothesized four-factor model was not the prime structure.

CONCLUSION

The FIAI was revealed to have satisfactory psychometric properties. The scale may be used in research or in clinical settings to study the mediating effects of self-efficacy or to modify haemodialysis patients' fluid-intake behaviour. Although this first validity study is promising, further validation focusing on reliability and cultural validity is needed.