Interdialytic weight gain and ultrafiltration rate in hemodialysis: lessons about fluid adherence from a national registry of clinical practice

Beyond dialysis: Assessing therapeutic regimen compliance and sleep quality in chronic renal failure patients undergoing maintenance hemodialysis in Saudi Arabia

BACKGROUND

Given its potential to impact physical and mental health, sleep quality is one of the most significant clinical outcomes among hemodialysis patients. Patients undergoing hemodialysis are required to adhere to an intricate treatment plan that consists of regular hemodialysis treatments, dietary and fluid restrictions, and a multi-drug regimen.

AIM

Investigate the relationship between adherence to a therapeutic regimen and sleep quality among chronic renal failure patients undergoing maintenance hemodialysis.

METHOD

A descriptive correlational research design was followed. The study was conducted at the hemodialysis units in Hafr Albatin City, specifically at Hafr Albatin Central Hospital and King Khaled Hospital, Saudi Arabia. A convenience sample of 100 adult patients was selected for the study. The Hemodialysis Patients Adherence Questionnaire and Pittsburgh Sleep Quality Index were utilized to collect the data in 5 months from September 20, 2023 to February 15, 2024.

RESULTS

The study revealed that more than half of the studied patients adhered to the therapeutic regimen, while (46%) did not adhere to it. More than half of the patients had poor sleep quality and were nonadherent to diet and fluid restrictions. Overall adherence score is negatively correlated with the global sleep quality score (r = -0.368, p < 0.001), indicating that poorer sleep quality is associated with lower overall adherence to the therapeutic regimen.

CONCLUSION

While a significant proportion of the patients demonstrated adherence to overall therapeutic regimens, including dialysis sessions and medication intake, there was notable nonadherence to fluid and diet restrictions. Poor sleep quality, prevalent among two-thirds of the participants, correlates negatively with adherence to therapeutic regimens.

Impact of variables on recovery time in patients undergoing hemodialysis: an international survey

BACKGROUND

Dialysis recovery time (DRT) refers to the period during which fatigue and weakness subside following hemodialysis treatment, allowing patients to resume their daily routines. This study aimed to identify the factors influencing DRT in hemodialysis patients in Turkey and Portugal, where the prevalence of chronic kidney disease is notably high.

METHODS

A cross-sectional observational study was conducted in a private dialysis center in Turkey and three dialysis centers in Portugal. The study included hemodialysis patients aged 18 years or older who had been undergoing four-hour hemodialysis sessions three times a week for at least six months. Participants had no communication barriers and voluntarily agreed to take part in the study. Data were collected using a semi-structured questionnaire to gather descriptive characteristics and the Hospital Anxiety and Depression Scale. Logistic regression analysis was employed to identify independent variables influencing DRT.

RESULTS

A total of 294 patients participated in the study, including 187 from Turkey and 107 from Portugal. In Turkey, increased interdialytic weight gain (P = 0.043) was associated with prolonged recovery time, while the use of high-flux dialyzers (P = 0.026) was linked to shorter recovery times. In Portugal, older age (P = 0.020) was found to extend recovery time.

CONCLUSION

Recovery time after dialysis is influenced by varying factors across different countries. Further research with larger sample sizes is needed to deepen understanding of these factors and their implications.

CLINICAL TRIAL NUMBER

NCT04667741.

Changes in right ventricular dimensions, function, and pulmonary circulation loading according to the degree of interdialytic weight gain in maintenance hemodialysis patients

INTRODUCTION

The aim of this study was to investigate changes in echocardiographic right ventricular (RV) indices in relation to the degree of fluid accumulation between hemodialysis sessions, evaluated according to the recommended threshold of interdialytic-weight-gain corrected for dry weight (IDWG%).

METHODS

A post-hoc analysis was performed using data from 41 maintenance hemodialysis patients. Patients were divided into a higher (>4.5%) and a lower (<4.5%) IDWG% group and underwent an echocardiographic assessment at the start and the end of the 3-day and the 2-day interdialytic interval.

RESULTS

RV systolic pressure (RVSP) increments were more pronounced in the higher compared to the lower IDWG% group (16.43 ± 5.37 vs. 14.11 ± 13.38 mm Hg respectively, p = 0.015) over the 3-day interval, while changes in RV filling pressures, did not differ significantly between the groups (p = 0.84).

CONCLUSIONS

During the 3-day interdialytic interval, pulmonary circulation is particularly overloaded in patients with fluid accumulation higher than the recommended thresholds, as evidenced by higher RVSP elevations.

Interdialytic weight gain and low-salt diet in patients on chronic hemodialysis: A systematic review and meta-analysis

OBJECTIVE

The present systematic review and meta-analysis aims to determine the difference in the interdialytic weight gain (IDWG) between low salt intake diet and normal/high salt intake diet or between nutritional counseling aimed at reducing diet salt intake and no nutritional counseling in patients on chronic hemodialysis.

METHODS

Medline, PubMed, Web of Science, and the Cochrane Library were searched. Randomized, crossover or parallel studies and observational studies were considered for inclusion and: 1) included adult patients on chronic hemodialysis since at least 6 months; 2) compared normal salt intake diet with low salt intake diet on IDWG; 3) compared nutritional counseling aimed at reducing diet salt intake with no intervention on IDWG; 4) reported on IDWG.

RESULTS

Eight articles (783 patients) were fully assessed for eligibility and included in the investigation. Meta-analysis showed frequencies of patients that increased their weight after dialysis more than 2.5 Kg (events) over total enrolled subjects for each group (control and experimental). As no significant heterogeneity was observed (I2 = 8%; p = 0.36), the pooled analysis was performed using a fixed-effect model. Funnel plot was generated and no obvious asymmetry was observed. The Overall Odds Ratio to get an event in the experimental group, in respect to controls, is 0.57 (0.33-0.97) (p = 0.04] with single studies OR ranging between 0.11 and 1.08.

CONCLUSION

The present systematic review and meta-analysis suggest that the use of a low salt diet sodium or a nutritional counseling aimed at reducing diet salt intake is associated with a statistically significant reduction of the IDWG in patients on chronic hemodialysis.

Interdialytic weight gain and low dialysate sodium concentration in patients on chronic hemodialysis: a systematic review and meta-analysis

PURPOSE

The present systematic review and meta-analysis aimed at evaluating the effect of low dialysate sodium concentration on interdialytic weight gain (IDWG) in chronic hemodialysis patients.

METHODS

Studies were eligible for inclusion if they were English language papers published in a peer-reviewed journal and met the following inclusion criteria: (1) studies in adult patients (over 18 years of age), (2) included patients on chronic hemodialysis since at least 6 months; (3) compared standard (138-140 mmol/l) or high (> 140 mmol/l) dialysate sodium concentration with low (< 138 mmol/l) dialysate sodium concentration; (4) Included one outcome of interest: interdialytic weight gain. Medline, PubMed, Web of Science, and the Cochrane Library were searched for the quality of reporting for each study was performed using the Quality Assessment Tool of Controlled Intervention Studies of the National Institutes of Health. The quality of reporting of each cross-over study was performed using the Revised Cochrane Risk of Bias (RoB) tool for cross-over trials as proposed by Ding et al. RESULTS: Nineteen studies (710 patients) were included in the analysis: 15 were cross-over and 4 parallel randomized controlled studies. In cross-over studies, pooled analysis revealed that dialysate sodium concentration reduced IDWG with a pooled MD of - 0.40 kg (95% CI - 0.50 to - 0.30; p < 0.001). The systematic review of four parallel, randomized, studies revealed that the use of a low dialysate sodium concentration was associated with a significant reduction of the IDWG in two studies, sustained and almost significant (p = 0.05) reduction in one study, and not significant reduction in one study.

CONCLUSION

Low dialysate sodium concentration reduces the IDWG in prevalent patients on chronic hemodialysis.

Interdialytic weight gain is not associated with symptoms of depression or apathy in patients on chronic hemodialysis

PURPOSE

Little is known about the relationships between apathy, depressive symptoms and interdialytic weight gain (IDWG) in patients on chronic hemodialysis. Aim of the present study is to investigate the association between IDWG and symptoms of depression and apathy in hemodialysis patients.

METHODS

A total of 139 chronic patients of the HD units between January 2020 and December 2021 were included in the present cross-sectional study. IDWG was calculated as the difference between the pre-HD weight and the weight registered after the previous session; the average of the sessions in a month was registered. Apathy Evaluation Scale (AES) was adopted to evaluate apathy. Depression was assessed by Beck Depression Inventory (BDI).

RESULTS

Ninety-three patients had IDWG% ≤ 4 and 46 had an IDWG% > 4. Correlation between IDWG% and BDI as well that between IDWG% and AES were not statistically significant. Median BDI and mean AES did not differ significantly between the groups. In addition, 104 patients had a BDI < 16 and 35 had a BDI ≥ 6. Seventy-five patients had an AES score ≤ 35 and 63 had a AES score > 35. The IDWG (kg) and the IDWG% did not differ significantly between the two groups.

CONCLUSION

IDWG is not associated with symptoms of depression or apathy in hemodialysis patients. Thus, these results may question if the use of behavioral intervention aimed at improving motivation is warranted in the hemodialysis population to reduce the IDWG.

Conservative therapy is associated with worse clinical features and biochemical derangements than renal replacement therapy: a retrospective study in Kumasi, Ghana

Background

The incidence of end stage kidney disease (ESKD) is increasing in Ghana as with the rest of the world. This study compared the sociodemographic, diagnostic characteristics (clinical, biochemical and imaging) and clinical outcomes of ESKD patients who chose either renal replacement therapy (RRT) or conservative therapy as well as the factors that influenced their choice.

Methods

We retrospectively reviewed the records of 382 ESKD patient from 2006 to 2018. The data was collected from the Nephrology Clinic at the Komfo Anokye Teaching Hospital (KATH). Sociodemographic, diagnostic (clinical, biochemical and imaging) and therapeutic data were obtained, organized and analyzed with Statistical Package for the Social Sciences (SPSS).

Results

Of the 382 patients, 321 had conservative therapy whiles 61 had renal replacement therapy. The mean age of participants was 47.71 ± 16.10 years. Bipedal swelling (16.8%), fatigue (10.4%) and facial swelling (9.2%) were the major clinical features. Chronic glomerulonephritis (31.4%), hypertension (30.3%) and diabetes mellitus nephropathy (28.2%) were the most frequent predisposing conditions. Nifedipine (82.0%), bisoprolol (32.8%), aspirin (19.7%), ranitidine (26.2%), metformin (13.1%) and lasix (78.7%) were commonly used by the RRT patients than their conservative therapy counterparts. Compared to their RRT counterparts, patients on conservative therapy were more on irbesartan/lisinopril (57.9%) and sodium hydro carbonate (NaHCO₃) (52.0%). Diastolic blood pressure (DBP) (p = 0.047), uremic gastritis (p = 0.007), anaemia, uraemia, haematuria and hyperkalaemia (p < 0.001) were more common in conservative therapy patients than RRT patients with RRT patients showing better corticomedullary differentiation (38.1% vs. 27.7%, p < 0.001) and normal echotexture (15.0% vs. 11.6%, p = 0.005). Age, gender, occupation and duration of illness were significantly associated with the decision to opt for conservative therapy.

Conclusion

Patients on conservative therapy have worse clinical outcomes than their RRT counterparts. Early referrals to nephrologist as well as subsidized RRT should be targeted.

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.

The Fluid Intake Appraisal Inventory for low fluid intake among patients on haemodialysis: Translation and psychometric evaluation of the Danish version

AIMS AND OBJECTIVES

To translate and evaluate the psychometric properties of a Danish version of the Fluid Intake Appraisal Inventory (Da-FIAI) regarding reliability and validity.

BACKGROUND

Patients on haemodialysis are advised to restrict their fluid intake, which often requires patients to change their way of life and health behaviour.

DESIGN

Cross-sectional study.

METHODS

The FIAI was translated to Danish by two sets of target translations and two sets of back-translations (n = 4). One hundred and ninety-five patients on haemodialysis needing ultrafiltration completed the questionnaire for the evaluation study of the Da-FIAI, and psychometric properties were evaluated.

RESULTS

Criterion validity was supported, and the Da-FIAI had an excellent internal consistency; known-groups validity and the factor structure could not be confirmed in the Danish sample.

CONCLUSIONS

We have shown that the Da-FIAI is useful in a Danish haemodialysis population to score the patient's ability to avoid drinking in specific situations.

RELEVANCE TO CLINICAL PRACTICE

Using the Da-FIAI in the continuing nurse-patient communication, nurses have a validated instrument to evaluate patients' self-efficacy in fluid intake management and systematically identify and advise patients who need additional support.

A Pilot Comprehensive Psychoeducation Program for Fluid Management in Renal Palliative Care Patients: Impact on Health Care Utilization

Background: Fluid management is a clinical challenge in patients with end-stage renal disease (ESRD), especially among those who opted for conservative treatment. We initiated a comprehensive program of psychosocial interventions. Objectives: To study the impact of this psychoeducational (Appropriate amount of intake, Self-efficacy, and Adherence [ASA]) program on symptom burden and acute admission rates related to fluid overload (FO) in this group of elderly ESRD patients attending renal palliative care outpatient clinic under our division. Methods: All elderly (age >60 years) patients who were followed in our renal palliative clinic had one or more acute admissions related to FO during the first three months were identified and invited to participate in this program. The palliative care nurse assessed each pair of patient/caregiver before doctor consultation, documented the symptom burden by the Edmonton Symptom Assessment Scale, provided symptom advice with use of pamphlets, monitored fluid and drug compliance, and provided psychosocial-spiritual support. The patient symptom score, body weight (BW), and three month acute admission episodes were compared before and after psychoeducation interventions by paired t test. Results: Data from 138 patients were analyzed. Of them, edema, shortness of breath, and insomnia occurred in 131 (95%), 67 (49 %), and 44 (32%) patients, respectively. A total of 125 patients (90.6%) had poor fluid/diet compliance, whereas 59 patients (42.7%) had poor drug compliance. The BW decreased significantly from 57.1 (12.8) kg at baseline to 52.5 (13.6) kg after three months of the ASA program. The acute admission rate related to FO dropped significantly from 7.6 episodes/patient/year to 6.4 episodes/patient/year. Conclusion: Our data demonstrated that the ASA program could improve patient symptoms and reduce acute hospital admissions, and thus improve the overall patient wellbeing and reduce health care utilization. Further studies are required to delineate the efficacy of different components in this ASA program and how to enhance its delivery.

Rationale and design of technology assisted stepped collaborative care intervention to improve patient-centered outcomes in hemodialysis patients (TĀCcare trial)

Most hemodialysis (HD) patients experience symptoms of depression, pain and fatigue that impair their health-related quality of life (HRQOL) significantly. These symptoms are associated with increased hospitalization and mortality, mediated by behavioral factors (e.g. non-adherence to medication and dialysis) and biological factors (e.g. inflammatory cytokines). Prior interventions to alleviate symptoms and improve HRQOL showed limited effectiveness in HD patients and their effect on bio-behavioral mediators is lacking evidence. It is imperative to improve patient-centered dialysis care and to address call from Kidney Disease Improving Global Outcomes (KDIGO) guidelines for integration of symptom assessment and management in routine HD-care. Technology-Assisted stepped Collaborative Care (TĀCcare) is a multi-center randomized controlled trial (RCT) of 150 diverse HD patients from Pennsylvania and New Mexico, designed to compare the effectiveness of a 12-week stepped collaborative care intervention (cognitive behavioral therapy, CBT) with an attention control arm of technology-delivered health education. Collaborative care provides an integrated multi-disciplinary structured management plan. Furthermore, a stepped approach to pharmacotherapy and/or CBT allows for individualization of treatment according to patients' clinical status, preferences and treatment response. To simplify the delivery of CBT and to minimize patient and provider burden, we will use live video-conferencing with patients in dialysis units. We will examine the effect of these interventions on patient symptoms, HRQOL, treatment adherence and inflammatory biomarkers. This RCT tests a readily implementable intervention that can be integrated in routine HD-care and will generate novel and meaningful insights on strategies to alleviate common symptoms and improve HRQOL in HD.

Phosphate-control adherence in hemodialysis patients: current perspectives

OBJECTIVES

This review summarizes factors relevant for adherence to phosphate-control strategies in dialysis patients, and discusses interventions to overcome related challenges.

METHODS

A literature search including the terms "phosphorus", "phosphorus control", "hemo-dialysis", "phosphate binder medications", "phosphorus diet", "adherence", and "nonadherence" was undertaken using PubMed, PsycInfo, CINAHL, and Embase.

RESULTS

Hyperphosphatemia is associated with cardiovascular and all-cause mortality in dialysis patients. Management of hyperphosphatemia depends on phosphate binder medication therapy, a low-phosphorus diet, and dialysis. Phosphate binder therapy is associated with a survival benefit. Dietary restriction is complex because of the need to maintain adequate protein intake and, alone, is insufficient for phosphorus control. Similarly, conventional hemodialysis alone is insufficient for phosphorus control due to the kinetics of dialytic phosphorus removal. Thus, all three treatment approaches are important contributors, with dietary restriction and dialysis as adjuncts to the requisite phosphate binder therapy. Phosphate-control adherence rates are suboptimal and are influenced directly by patient, provider, and phosphorus-control strategy-related factors. Psychosocial factors have been implicated as influential "drivers" of adherence behaviors in dialysis patients, and factors based on self-motivation associate directly with adherence behavior. Higher-risk subgroups of nonadherent patients include younger dialysis patients and non-whites. Provider attitudes may be important - yet unaddressed - determinants of adherence behaviors of dialysis patients.

CONCLUSION

Adherence to phosphate binders, low-phosphorus diet, and dialysis prescription is suboptimal. Multicomponent strategies that concurrently address therapy-related factors such as side effects, patient factors targeting self-motivation, and provider factors to improve attitudes and delivery of culturally sensitive care show the most promise for long-term control of phosphorus levels. Moreover, it will be important to identify patients at highest risk for lack of control, and for programs to be ready to deliver flexible person-centered strategies through training and dedicated resources to align with the needs of all patients.

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.

Analyzing the concept of fluid overload in Chronic Kidney Disease patients in dialysis therapy: an integrative review

Objective To analyze the concept of fluid overload in Chronic Kidney Disease patients undergoing dialysis therapy and comparing it to the Nursing Diagnosis of Excess fluid volume present in the NANDA International. Method An integrative literature review carried out in the LILACS, CINAHL and SCOPUS databases. Results The sample was comprised of 22 articles. The defining attributes of the concept were: fluid retention, fluid buildup in the body, and weight gain over a short period; while the attributes composing the definition were: fluid retention in the body (intracellular/extracellular space) expressed by weight gain over short period of time. Twenty-one (21) antecedents and 22 consequents of fluid overload in patients with renal disease in dialysis therapy were identified. Conclusion The definition evidenced by the NANDA International taxonomy for the Excess fluid volume Nursing Diagnosis and the components of this diagnosis need to be complemented in order to better target the care of patients with kidney disease undergoing dialysis therapy.

Significance of interdialytic weight gain versus chronic volume overload: consensus opinion

Predialysis volume overload is the sum of interdialytic weight gain (IDWG) and residual postdialysis volume overload. It results mostly from failure to achieve an adequate volume status at the end of the dialysis session. Recent developments in bioimpedance spectroscopy and possibly relative plasma volume monitoring permit noninvasive volume status assessment in hemodialysis patients. A large proportion of patients have previously been shown to be chronically volume overloaded predialysis (defined as >15% above 'normal' extracellular fluid volume, equivalent to >2.5 liters on average), and to exhibit a more than twofold increased mortality risk. By contrast, the magnitude of the mortality risk associated with IDWG is much smaller and only evident with very large weight gains. Here we review the available evidence on volume overload and IDWG, and question the use of IDWG as an indicator of 'nonadherence' by describing its association with postdialysis volume depletion. We also demonstrate the relationship between IDWG, volume overload and predialysis serum sodium concentration, and comment on salt intake. Discriminating between volume overload and IDWG will likely lead to a more appropriate management of fluid withdrawal during dialysis. Consensually, the present authors agree that this discrimination should be among the primary goals for dialysis caretakers today. In consequence, we recommend objective measures of volume status beyond mere evaluations of IDWG.

Renal replacement therapy registries--time for a structured data quality evaluation programme

Registries in the area of renal replacement therapy (RRT) are intended to be a tool for epidemiological research, health care planning and improvement of quality of care. In this perspective, the value of a population-based RRT registry and its ability to achieve its goals rely heavily on the quality of its data and on quality control procedures. Data quality is of crucial importance to prevent 'garbage coming out from garbage going in'. Regular evaluations of the data quality within these registries are needed to assess various aspects of data quality like completeness, prevention of duplicates, data validity, comparability, timeliness, usefulness and responsiveness of different items and accuracy of reporting and interpretation. In this technical note, we will discuss the purposes of RRT registries and the importance of different aspects of data quality in relation to those purposes. In addition, we discuss how these data quality aspects can be assessed and, where possible, how data quality may be improved.

Individualized reduction in dialysate sodium in conventional in-center hemodialysis

Recent studies have focused on the association between dialysate sodium (Na(+)) prescriptions and interdialytic weight gain (IDWG). We report on a case series of 13 patients undergoing conventional, thrice-weekly in-center hemodialysis with an individualized dialysate Na(+) prescription. Individualized dialysate Na(+) was achieved in all patients through a stepwise weekly reduction of the standard dialysate Na(+) prescription (140 mEq/L) by 2-3 mEq/L until reaching a Na(+) gradient of -2 mEq/L (dialysate Na(+) minus average plasma Na(+) over the preceding 3 months). Interdialytic weight gain, with and without indexing to dry weight (IDWG%), blood pressure, and the proportion of treatments with cramps, intradialytic hypotension (drop in systolic blood pressure >30 mmHg) and intradialytic hypotension requiring an intervention were reviewed. At the beginning of the observation period, the pre-hemodialysis (HD) plasma Na(+) concentration ranged from 130 to 141 mEq/L. When switched from the standard to the individualized dialysate Na(+) concentration, IDWG% decreased from 3.4% ± 1.6% to 2.5% ± 1.0% (P = 0.003) with no change in pre- or post-HD systolic or diastolic blood pressures (all P > 0.05). We found no significant change in the proportion of treatments with cramps (6% vs. 13%), intradialytic hypotension (62% vs. 65%), or intradialytic hypotension requiring an intervention (29% vs. 33%). Individualized reduction of dialysate Na(+) reduces IDWG% without significantly increasing the frequency of cramps or hypotension.

Ultrafiltration rate as a nursing-sensitive quality indicator in haemodialysis

Nursing quality indicators are widely used to demonstrate nurses' contributions to health care. Some studies in nephrology settings have addressed nursing quality, but indicators reflecting the nursing process quality in haemodialysis are lacking. This paper argues for considering ultrafiltration rate as a nursing-sensitive quality indicator in haemodialysis. Strategies and qualifications for considering ultrafiltration rate as a nursing quality indicator are established and discussed. It is argued that the indicator is associated with nursing practice, linked to both morbidity and mortality, and is within the scope of the nurse's responsibility. It is also argued that the indicator could be influenced by other factors than nursing care. Thus, further studies are needed to investigate the association between ultrafiltration rate and patient safety. The introduction of the ultrafiltration rate as a duty specific quality indicator is a coveted measure of nursing care quality in haemodialysis settings.

Monitoring and blunting styles in fluid restriction consultation

Excessive fluid overload is common in hemodialysis patients. Understanding fluid intake behavior in relation to used cognitive coping style would serve the fluid restriction consultation. The aim of this study was to explore whether hemodialysis patients' fluid intake behavior differs as a function of used coping style. Secondary analysis of data from 51 hemodialysis patients regarding cognitive coping style (assessed by the Threatening Medical Situations Inventory) and fluid intake behavior were used. The participants' mean age was 62.9 years (range 27-84), they had received dialysis treatment for 3.9 years on average (range 0-22), 63% were male and they had gained 3.6% (±1.3) of their dry body weight during the interdialytic period. There was a significant difference in fluid intake behavior between coping groups (F = 3.899, d.f. 2, P = 0.027). The difference (P = 0.028) was isolated between patients with cognitive blunting style and patients with neutral coping style. Identification of hemodialysis patients using cognitive avoidance strategies can be advantageous in renal care. Fluid advice provided may have to be adjusted to the used coping style, especially for patients with a blunting coping style. However, the findings need to be confirmed, and the effect of individualized counseling needs to be evaluated in forthcoming studies.

Self-efficacy in relation to limited fluid intake amongst Portuguese haemodialysis patients

Self-efficacy is a temporary and influenceable characteristic, related to situations and tasks, mediating health-promoting behaviours. This study aimed to evaluate psychometric properties of a Portuguese version of the Fluid Intake Appraisal Inventory, and to describe self-efficacy in relation to limited fluid intake amongst Portuguese haemodialysis patients. Respondents were recruited from three dialysis units, and 113 of 155 eligible patients gave their informed consent. The translated scale was distributed and collected by the head nurses. Interdialytic weight gain was calculated as percentage of dry weight. Satisfactory psychometric properties were estimated in the Portuguese context. The participants' self-efficacy in relation to low fluid intake was asymmetrically distributed; the majority had moderately to high self-efficacy while some patients had very low self-efficacy to limited fluid intake. There was a significant difference in self-efficacy to fluid restrictions; patients with a weight gain of 3.5% or less presented higher self-efficacy scores than did patients exceeding the cutoff point.

Three months of regular gum chewing neither alleviates xerostomia nor reduces overhydration in chronic hemodialysis patients

INTRODUCTION AND AIMS

Gum chewing has been known to be a part of adjunctive medical therapy for cancer-related xerostomia. Nonadherence to fluid restriction in hemodialysis (HD) patients brought about by unrestricted thirst and xerostomia leads to excessive interdialytic weight gain (IWG). The effectiveness of gum chewing in reducing thirst in HD patients has till recently been evaluated by only a single study with short 2-week intervention period. The aim of the present study was to assess the effect of 3 months of regular use of sugar-free chewing gum on xerostomia, thirst, and hydration and nutritional status in HD patients.

METHODS

A prospective pre/post (3 + 1 month[s]) study including 38 chronic HD patients (14 women, 17 men; mean age, 59 ± 10 years; time on dialysis, 48 ± 45 months) with mean mid-week IWG of >1 kg, persistent xerostomia, and/or thirst was conducted. Seven patients did not complete the study including 3 because of suspected side effects of gum chewing (diarrhea or paradoxically increased thirst). After a 2-week run-in period, the subjects received a specified number of packs of low-tack, sugar-free chewing gum and specially designed diaries. Basic biochemistry and multifrequency electric bioimpedance were performed a total of 8 times, that is, at baseline and after each month of the intervention period, both before and after dialysis. Questionnaires related to xerostomia and thirst were filled in by the patients at baseline, at the end of the intervention period, and 1 month later. Body weight (for IWG assessment) and blood pressure were measured at the start of each dialysis for the whole duration of the study.

RESULTS

The mean number of chewing gum pellets used during the first and the third month of the study was 137 ± 56 and 139 ± 59, respectively. The patients did not report experiencing any changes in the intensity of xerostomia and thirst during the study. Total body water content assessed with bioimpedance did not decrease (41.9 ± 8.9 kg at baseline vs. 42.7 ± 9.1 kg at the end of the intervention period). Moreover, no changes in extracellular mass (31.9 ± 6.4 kg vs. 32.6 ± 6.6 kg), extracellular water (18.0 ± 5.2 kg vs. 18.3 ± 5.0 kg), and phase angle (4.6 ± 0.8 vs. 4.6 ± 0.8) were observed. Mean IWG between 2 mid-weekly HD sessions also did not change (2.3 ± 0.8 kg at baseline vs. 2.3 ± 0.9 kg at the end of the intervention period). No significant changes in thirst and xerostomia were observed 4 weeks after the end of the intervention period; however, mean IWG between 2 mid-weekly HD sessions increased to 2.8 ± 1.0 kg (P < .001).

CONCLUSIONS

Regular gum chewing is known to be well tolerated by most HD patients; however, it does not lead to the alleviation of xerostomia or excessive thirst and does not reduce IWG or improve hydration status.

Hospital treatment for fluid overload in the Medicare hemodialysis population

BACKGROUND AND OBJECTIVES

Fluid overload in hemodialysis patients sometimes requires emergent dialysis, but the magnitude of this care has not been characterized. This study aimed to estimate the magnitude of fluid overload treatment episodes for the Medicare hemodialysis population in hospital settings, including emergency departments.

DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS

Point-prevalent hemodialysis patients were identified from the Centers for Medicare and Medicaid Renal Management Information System and Standard Analytical Files. Fluid overload treatment episodes were defined by claims for care in inpatient, hospital observation, or emergency department settings with primary discharge diagnoses of fluid overload, heart failure, or pulmonary edema, and dialysis performed on the day of or after admission. Exclusion criteria included stays >5 days. Cost was defined as total Medicare allowable costs for identified episodes. Associations between patient characteristics and episode occurrence and cost were analyzed.

RESULTS

For 25,291 patients (14.3%), 41,699 care episodes occurred over a mean follow-up time of 2 years: 86% inpatient, 9% emergency department, and 5% hospital observation. Heart failure was the primary diagnosis in 83% of episodes, fluid overload in 11%, and pulmonary edema in 6%. Characteristics associated with more frequent events included age <45 years, female sex, African-American race, causes of ESRD other than diabetes, dialysis duration of 1 to 3 years, fewer dialysis sessions per week at baseline, hospitalizations during baseline, and most comorbid conditions. Average cost was $6,372 per episode; total costs were approximately $266 million.

CONCLUSIONS

Among U.S. hemodialysis patients, fluid overload treatment is common and expensive. Further study is necessary to identify prevention opportunities.