Choice of dialysis modality

Choice of the Dialysis Modality: Practical Considerations

Chronic kidney disease and the need for kidney replacement therapy have increased dramatically in recent decades. Forecasts for the coming years predict an even greater increase, especially in low- and middle-income countries, due to the rise in metabolic and cardiovascular diseases and the aging population. Access to kidney replacement treatments may not be available to all patients, making it especially strategic to set up therapy programs that can ensure the best possible treatment for the greatest number of patients. The choice of the "ideal" kidney replacement therapy often conflicts with medical availability and the patient's tolerance. This paper discusses the pros and cons of various kidney replacement therapy options and their real-world applicability limits.

First-year mortality in incident dialysis patients: results of the Peridialysis study

Background

Controversy surrounds which factors are important for predicting early mortality after dialysis initiation (DI). We investigated associations of predialysis course and circumstances affecting planning and execution of DI with mortality following DI.

Methods

Among 1580 patients participating in the Peridialysis study, a study of causes and timing of DI, we registered features of predialysis course, clinical and biochemical data at DI, incidence of unplanned suboptimal DI, contraindications to peritoneal dialysis (PD) or hemodialysis (HD), and modality preference, actual choice, and cause of modality choice. Patients were followed for 12 months or until transplantation. A flexible parametric model was used to identify independent factors associated with all-cause mortality.

Results

First-year mortality was 19.33%. Independent factors predicting death were high age, comorbidity, clinical contraindications to PD or HD, suboptimal DI, high eGFR, low serum albumin, hyperphosphatemia, high C-reactive protein, signs of overhydration and cerebral symptoms at DI. Among 1061 (67.2%) patients who could select dialysis modality based on personal choice, 654 (61.6%) chose PD, 368 (34.7%) center HD and 39 (3.7%) home HD. The 12-months survival did not differ significantly between patients receiving PD and in-center HD.

Conclusions

First-year mortality in incident dialysis patients was in addition to high age and comorbidity, associated with clinical contraindications to PD or HD, clinical symptoms, hyperphosphatemia, inflammation, and suboptimal DI. In patients with a “free” choice of dialysis modality based on their personal preferences, PD and in-center HD led to broadly similar short-term outcomes.

Evaluating the feasibility and effectiveness of a mindfulness-based intervention on stress and anxiety of family caregivers managing peritoneal dialysis

Background

Mindfulness-based intervention (MBI) has not been evaluated for its feasibility and effectiveness in reducing stress and anxiety among family caregivers of patients on peritoneal dialysis (PD).

Objectives

(1) To evaluate the feasibility to include MBI during PD training for family caregivers. (2) To determine the effect of MBI on the caregivers’ levels of stress (perceived stress scale, PSS), anxiety state-trait anxiety inventory, STAI), QOL (short-form 36) and reactions to caregiving (caregiver reaction assessment, CRA). (3) To determine differences in the health-related QOL (Kidney Disease Quality of Life Instrument-Short Form, KDQOL PCS and SF-36 MCS) of care recipients with caregivers receiving MBI at 1 month, 3 months and 6 months when compared to those with caregivers receiving routine training. (4) To gather the caregiver’s feedback on the MBI.

Methods

This feasibility study recruited family caregivers to receive either mindfulness training (MT) or treatment-as-usual (TAU) group. Both groups received 4.5-days of structured PD training, but only caregivers in the MT group received 4 days of MT sessions, audio-guided mindfulness practice at home and weekly telephone follow-up.

Results

Forty-four family caregivers participated in this study. Including MBI as part of the PD training was feasible. There was a trend towards lower scores for PSS and T-STAI in the MT group compared to the TAU group. The baseline score of both PSS and T-STAI were positively correlated with post-intervention outcome scores.

Conclusions

Mindfulness-based intervention has the potential to improve psychological symptoms among caregivers of patients with PD.

Socioeconomic Factors and Racial and Ethnic Differences in the Initiation of Home Dialysis

Rationale & Objective

Home dialysis has been underused in the United States, especially among minority groups. We investigated whether adjustment for socioeconomic factors would attenuate racial/ethnic differences in the initiation of home dialysis.

Study Design

Retrospective observational cohort study.

Setting & Population

Adult patients in the US Renal Data System who initiated dialysis on day 1 with either in-center hemodialysis (HD), home HD (HHD), or peritoneal dialysis (PD) from 2005 to 2013.

Predictor

Race/ethnicity: non-Hispanic white, Hispanic, black, or Asian.

Outcome

Initiating dialysis with PD versus in-center HD and HHD versus in-center HD for each minority group compared with non-Hispanic whites.

Analytical Approach

Odds ratios and 95% CIs estimated by logistic regression.

Results

Of 523,526 patients, 55% were white, 28% were black, 13% were Hispanic, and 4% were Asian; 8% started dialysis on PD, and 0.1%, on HHD. In unadjusted analyses, blacks and Hispanics were 30% and 19% less likely and Asians were 31% more likely to start on PD than whites. The differences narrowed when fully adjusted for demographic, medical, and socioeconomic factors. Adjustment for socioeconomic factors reduced these differences between white and black, Hispanic, and Asian patients by 13%, 28%, and 1%, respectively. Blacks were just as likely and Hispanics and Asians were less likely to start on HHD than whites. This did not change appreciably when fully adjusted for demographic, medical, and socioeconomic factors.

Limitations

No data for physician and patient preferences or modality education.

Conclusions

Black and Hispanic patients are less likely to start on PD than white patients, attributable partly, though not completely, to socioeconomic factors. Hispanics and Asians are less likely to start on HHD than whites. This was materially unaffected by socioeconomic factors. More research is needed to determine whether urgent-start PD programs and transitional care units in socioeconomically disadvantaged areas might reduce these disparities and increase home dialysis use among all groups.

Impact of initial dialysis modality on the survival of patients with ESRD in eastern China: a propensity-matched study

Background

There are conflicting research results about the survival differences between hemodialysis(HD) and peritoneal dialysis (PD). The present study estimated the survival and the relative mortality hazard for incident HD and PD patients with end stage renal disease (ESRD) in eastern China.

Methods

This study examined a cohort of patients with ESRD who initiated dialysis therapy in Zhejiang province between Jan of 2010 and Dec of 2014, followed up until the end of 2015. PD patients were matched in a 1:1 fashion with HD patients, and Kaplan–Meier analysis was used to explore the survival of them. The Cox proportional hazard regression model was applied to identify the factors that predict survival by treatment modality. Subgroup analyses were conducted by stratifying patients according to gender, age, causes of ESRD and comorbidities.

Results

Among a total of 22,379 enrolled patients (17,029 HD patients and 5350 PD patients), 5350 matched pairs were identified, and followed for a median of 29 months (3 ~ 72 months). Kaplan-Meier survival curve revealed that overall mortality rate was significantly higher in HD patients than in PD patients (log-rank test, P < 0.001), after adjusting by gender, age, primary causes of ESRD and comorbidities. HD was consistently associated with an increased risk for morality compared with PD in the matched cohort (adjusted hazard ratio (AHR): 1.140, 95%CI: 1.023 ~ 1.271). In subgroup analyses, male, younger patients, or nondiabetic patients aged less than 65 years after adjustment of covariates, initiating with PD was associated with a significantly lower mortality compared with HD. In the multivariate Cox proportional risks model, age, diabetic nephropathy (DN), other/unknown causes of ESRD, and patients with a history of cardiovascular disease or cancer showed statistical significance in explaining survival of incident ESRD patients.

Conclusions

ESRD patients who initiated dialysis with PD yielded superior survival rates compared to HD. Increased use of PD as initial dialysis modality in ESRD patients could be encouraged in Chinese population.

Effect of center practices on the choice of the first dialysis modality for children and young adults

BACKGROUND

Peritoneal dialysis (PD) remains the modality of choice in children, but there is no clear evidence to support a better outcome in children treated with PD. We aimed to assess factors that have an impact on the choice of dialysis modality in children and young adults in France and sought to determine the roles of medical factors and center practices.

METHODS

We included all patients aged <20 years at the start of renal replacement therapy (RRT), recorded in the French RRT Registry between 2002 and 2013. Hierarchical logistic regression models were used to study the association between the patient/center characteristics and the probability of receiving PD as the first dialysis modality.

RESULTS

We included 806 patients starting RRT in 177 centers, 23 of which were specialized pediatric centers. Six hundred and one patients (74.6 %) started with hemodialysis (HD), whereas 205 (25.4 %) started with PD. A greater probability of PD was found in younger children, whereas starting the treatment in an emergency setting was associated with a low use of PD. We found a significant variability among centers that accounted for 43 % of the total variability. The probability of PD was higher in adult centers and was proportional to the rate of PD in the center.

CONCLUSIONS

Center practices are a major factor in the choice of dialysis modality. This raises concerns about patient and family choices and to what extent doctors may influence the final decision. Further pediatric studies focusing on children's and parents' wishes are needed to provide care as close as possible to patients' and families' expectations.

The influence of different dialysis modalities on the quality of life of patients with end-stage renal disease: A systematic literature review

OBJECTIVES

This study aims to generate evidence regarding the relationships of different dialysis modalities with HR-QOL.

DESIGN

A systematic review was conducted to investigate the HR-QOL of patients treated with different dialysis modalities.

METHODS

A literature search was conducted for English language articles in the CINAHL, Medline and PubMed databases published from January 1990 through May 2016. Specifically, we sought articles that would compare the HR-QOL of hemodialysis (HD) and peritoneal dialysis (PD) patients in terms of physiological, psychological and social functioning, as well as disease symptoms. Thirty-four articles met the study inclusion criteria and were included into the analysis.

RESULTS

The research results indicated no significant differences in HR-QOL between HD and PD treatment. However, a higher percentage of patients who received PD had a better HR-QOL in terms of physiological, psychological, social and disease symptoms.

CONCLUSIONS

Despite the fact that the results of this study showed no difference in HR-QOL between HD and PD treatment, its review of relevant references can serve as a reference for health professionals. However, patients' conditions must still be taken into account when making suggestions about which dialysis modality a patient should use.

Peritoneal dialysis: update on patient survival

Due to ongoing limitations in the availability and timeliness of kidney transplantation, most patients with end-stage renal disease (ESRD) require some form of dialysis during their lifetime. Worldwide, ESRD patients most commonly receive hemodialysis (HD) or one of two forms of peritoneal dialysis (PD), continuous ambulatory PD (CAPD) or automated PD (APD). In this review, we analyze the data available from the last several decades on overall survival associated with HD as compared to PD as well as with CAPD compared to APD. Because of the inherent difficulty in randomly assigning patients to different dialysis modalities, the survival data available are virtually all observational and fraught with many confounding factors and limitations. However, over the last 10 – 15 years as overall survival of dialysis patients has steadily improved and statistical methods to analyze observational data have evolved, a pattern of virtual equivalence in survival among patients on HD vs. PD and on CAPD vs. APD has emerged. As such, impact upon lifestyle and upon quality of life likely should remain the predominant factors in guiding nephrologists and their patients in their choice of dialysis modality.

Factors influencing choice of renal replacement therapy in European paediatric nephrology units

BACKGROUND

Many factors may impact upon choice of renal replacement therapy (RRT) for children and adolescents, including patient and family choice, patient size and distance from the renal centre as well as logistic issues such as facilities and staffing at the unit. We report a survey of factors influencing treatment choice in 14 European paediatric nephrology units.

METHODS

A questionnaire was developed by consensus and completed by 14 members of the European Paediatric Dialysis Working Group on facilities, staffing and family assessments impacting on choice of therapy as well as choice of therapy for 97 patients commencing initial RRT in 2011.

RESULTS

All units offered all modalities of RRT, but there were limitations for pre-emptive transplantation (PET) and largely adult surgical dependence for creation of arteriovenous fistulae and transplantation. The average waiting time for a deceased donor kidney was 18.5 (range 3-36) months. Full time dietetic support was available in six of the 14 units. There was no social worker, psychology, play therapy or teaching support in three, two, seven and four units, respectively. Assessment by other members of the multidisciplinary team and home visits before choice of therapy was carried out in 50 % of units, and although all patients were discussed at team meetings, the medical opinion predominated. In terms of types of RRT, 50 % of patients were commenced on chronic peritoneal dialysis (PD), 34 % on haemodialysis (HD) and 16 % underwent pre-emptive transplantation (PET). Chronic PD predominated in patients aged <5 years and HD predominated in those aged >10 years. Patient and family choice and age or size of patient were predominant factors in choice of therapy with a predictable decline in renal function favouring PET and social factors HD.

CONCLUSIONS

Chronic peritoneal dialysis predominated as primary choice of RRT, especially in younger children. The PET rates remain low. The influence of surgeons predominanted, and national transplant rules may be significant. Most units had insufficient multiprofessional support, which may impact upon initial choice of therapy as well as sustaining families through RRT.

Comparing mortality of peritoneal and hemodialysis patients in the first 2 years of dialysis therapy: a marginal structural model analysis

BACKGROUND AND OBJECTIVES

There are conflicting research results about the survival differences between hemodialysis and peritoneal dialysis, especially during the first 2 years of dialysis treatment. Given the challenges of conducting randomized trials, differential rates of modality switch and transplantation, and time-varying confounding in cohort data during the first years of dialysis treatment, use of novel analytical techniques in observational cohorts can help examine the peritoneal dialysis versus hemodialysis survival discrepancy.

DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS

This study examined a cohort of incident dialysis patients who initiated dialysis in DaVita dialysis facilities between July of 2001 and June of 2004 and were followed for 24 months. This study used the causal modeling technique of marginal structural models to examine the survival differences between peritoneal dialysis and hemodialysis over the first 24 months, accounting for modality change, differential transplantation rates, and detailed time-varying laboratory measurements.

RESULTS

On dialysis treatment day 90, there were 23,718 incident dialysis-22,360 hemodialysis and 1,358 peritoneal dialysis-patients. Incident peritoneal dialysis patients were younger, had fewer comorbidities, and were nine and three times more likely to switch dialysis modality and receive kidney transplantation over the 2-year period, respectively, compared with hemodialysis patients. In marginal structural models analyses, peritoneal dialysis was associated with persistently greater survival independent of the known confounders, including dialysis modality switch and transplant censorship (i.e., death hazard ratio of 0.52 [95% confidence limit 0.34-0.80]).

CONCLUSIONS

Peritoneal dialysis seems to be associated with 48% lower mortality than hemodialysis over the first 2 years of dialysis therapy independent of modality switches or differential transplantation rates.