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Fotheringham J, Vilar E, Bansal T, Laboi P, Davenport A, Dunn L, Hole AR. Patient Preferences for Longer or More Frequent In-Center Hemodialysis Regimens: A Multicenter Discrete Choice Study. Am J Kidney Dis 2022; 79:785-795. [PMID: 34699958 PMCID: PMC9153730 DOI: 10.1053/j.ajkd.2021.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 09/05/2021] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE Longer and more frequent hemodialysis sessions are associated with both benefits and harms. However, their relative importance to patients and how they influence acceptability for patients have not been quantified. STUDY DESIGN Discrete-choice experiment in which a scenario followed by 12 treatment choice sets were presented to patients in conjunction with varying information about the clinical impact of the treatments offered. SETTING & PARTICIPANTS Patients with kidney failure treated with maintenance dialysis for≥1 year in 5 UK kidney centers. PREDICTORS Length and frequency of hemodialysis sessions and their prior reported associations with survival, quality of life, need for fluid restriction, hospitalization, and vascular access complications. OUTCOME Selection of longer (4.5 hours) or more frequent (4 sessions per week) hemodialysis regimens versus remaining on 3 sessions per week with session lengths of 4 hours. ANALYTICAL APPROACH Multinomial mixed effects logistic regression estimating the relative influence of different levels of the predictors on the selection of longer and more frequent dialysis, controlling for patient demographic characteristics. RESULTS Among 183 prevalent in-center hemodialysis patients (mean age of 63.7 years, mean dialysis vintage of 4.7 years), 38.3% (70 of 183) always chose to remain on regimens of 3 sessions per week with session duration of 4 hours. Depicted associations of increasing survival and quality of life, reduced need for fluid restriction, and avoiding additional access complications were all significantly associated with choosing longer or more frequent treatment regimens. Younger age, fatigue, previous experience of vascular access complications, absence of heart failure, and shorter travel time to dialysis centers were associated with preference for 4 sessions per week. Patients expressed willingness to trade up to 2 years of life to avoid regimens of 4 sessions per week or access complications. After applying estimated treatment benefits and harms from existing literature, the fully adjusted model revealed that 27.1% would choose longer regimens delivered 3 times per week and 34.3% would choose 4 hours 4 times per week. Analogous estimates for younger fatigued patients living near their unit were 23.5% and 62.5%, respectively. LIMITATIONS Estimates were based on stated preferences rather than observed behaviors. Predicted acceptance of regimens was derived from data on treatment benefits and harms largely sourced from observational studies. CONCLUSIONS Predicted acceptance of longer and more frequent hemodialysis regimens substantially exceeds their use in current clinical practice. These findings underscore the need for robust data on clinical effectiveness of these more intensive regimens and more extensive consideration of patient choice in the selection of dialysis regimens.
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Affiliation(s)
- James Fotheringham
- School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom; Sheffield Kidney Institute, Northern General Hospital, Sheffield, United Kingdom.
| | - Enric Vilar
- University of Hertfordshire, Hatfield, United Kingdom
| | - Tarun Bansal
- Bradford Teaching Hospitals NHS Trust, Bradford, United Kingdom
| | - Paul Laboi
- York Teaching Hospital NHS Foundation Trust, York, United Kingdom
| | - Andrew Davenport
- UCL Department of Nephrology, Royal Free Hospital, University College London, London, United Kingdom
| | - Louese Dunn
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, United Kingdom
| | - Arne Risa Hole
- Department of Economics, University of Sheffield, Sheffield, United Kingdom
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Navarrete JE, Rajabalan A, Cobb J, Lea JP. Proportion of Hemodialysis Treatments with High Ultrafiltration Rate and the Association with Mortality. KIDNEY360 2022; 3:1359-1366. [PMID: 36176655 PMCID: PMC9416834 DOI: 10.34067/kid.0001322022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/02/2022] [Indexed: 01/11/2023]
Abstract
Background Rapid fluid removal during hemodialysis has been associated with increased mortality. The limit of ultrafiltration rate (UFR) monitored by the Centers for Medicare & Medicaid Services is 13 ml/kg per hour. It is not clear if the proportion of treatments with high UFR is associated with higher mortality. We examined the association of proportion of dialysis treatments with high UFR and mortality in end stage kidney failure patients receiving hemodialysis. Methods This was a retrospective study of incident patients initiating hemodialysis between January 1, 2010, and December 31, 2019, at Emory dialysis centers. The proportion of treatments with high UFR (>13 ml/kg per hour) per patient was calculated using data from the initial 3 months of dialysis therapy. Patients were categorized on the basis of quartiles of proportion of dialysis sessions with high UFR. Risk of death and survival probabilities were calculated and compared for all quartiles. Results Of 1050 patients eligible, the median age was 59 years, 56% were men, and 91% were Black. The median UFR was 6.5 ml/kg per hour, and the proportion of sessions with high UFR was 5%. Thirty-one percent of patients never experienced high UFR. Being a man, younger age, shorter duration of hemodialysis sessions, lower weight, diabetic status, higher albumin, and history of heart failure were associated with a higher proportion of sessions with high UFR. Patients in the higher quartile (26% dialysis with high UFR, average UFR 9.8 ml/kg per hour, median survival of 5.6 years) had a higher risk of death (adjusted hazard ratio 1.54; 95% CI, 1.13 to 2.10) compared with those in the lower quartile (0% dialysis with high UFR, average UFR 4.7 ml/kg per hour, median survival 8.8 years). Conclusions Patients on hemodialysis who did not experience frequent episodes of elevated UFR during the first 3 months of their dialysis tenure had a significantly lower risk of death compared with patients with frequent episodes of high UFR.
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Affiliation(s)
- José E. Navarrete
- Emory University School of Medicine, Renal Division, Atlanta, Georgia
| | - Ajai Rajabalan
- Emory University School of Medicine, Renal Division, Atlanta, Georgia
| | - Jason Cobb
- Emory University School of Medicine, Renal Division, Atlanta, Georgia
| | - Janice P. Lea
- Emory University School of Medicine, Renal Division, Atlanta, Georgia
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Golestaneh L, Melamed M, Kim RS, St. Clair Russell J, Heisler M, Villalba L, Perry T, Cavanaugh KL. Peer mentorship to improve outcomes in patients on hemodialysis (PEER-HD): a randomized controlled trial protocol. BMC Nephrol 2022; 23:92. [PMID: 35247960 PMCID: PMC8897762 DOI: 10.1186/s12882-022-02701-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 02/12/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Patients receiving in-center hemodialysis experience disproportionate morbidity and incur high healthcare-related costs. Much of this cost stems from potentially avoidable hospitalizations. Peer mentorship has been used effectively to improve outcomes for patients with complex chronic diseases. We propose testing the efficacy of peer mentorship on hospitalization rates among patients receiving hemodialysis.
Methods
This is a multicenter parallel group randomized controlled pragmatic trial of patients treated at hemodialysis facilities in Bronx, NY and Nashville, TN. The study has two phases. Phase 1 will enroll and train 16 hemodialysis patients (10 in Bronx, NY and 6 in Nashville TN) to be mentors using a program focused on enhancing self-efficacy, dialysis self-management and autonomy-supportive communication skills. Phase 2 will enroll 200 high risk adults receiving hemodialysis (140 in Bronx, NY and 60 in Nashville, TN), half of whom will be randomized to intervention and half to usual care. Intervention participants are assigned to weekly telephone calls with trained mentors (see Phase 1) for a 3-month period.
The primary outcome of Phase 1 will be engagement of mentors with training and change in knowledge scores and autonomy skills from pre- to post-training. The primary outcome of Phase 2 will be the composite count of ED visits and hospitalizations at the end of study follow-up in patient participants assigned to intervention as compared to those assigned to usual care. Secondary outcomes for Phase 2 include the change over the trial period in validated survey scores measuring perception of social support and self-efficacy, and dialysis adherence metrics, among intervention participants as compared to usual care participants.
Discussion
The PEER-HD study will test the feasibility and efficacy of a pragmatic peer-mentorship program designed for patients receiving hemodialysis on ED visit and hospitalization rates. If effective, peer-mentorship holds promise as a scalable patient-centered intervention to decrease hospital resource utilization, and by extension morbidity and cost, for patients receiving maintenance in-center hemodialysis.
Trial registration
Clinicaltrials.gov identifier: NCT03595748; 7/23/2018.
Trial sponsor
National Institutes of Diabetes, Digestive and Kidney Disease (NIDDK) 5R18DK118471.
Funding
Funding for this study was provided by the National Institutes of Diabetes, Digestive and Kidney Disease: R18DK118471.
Study status
This is an ongoing study and not complete. We are still collecting data for observational follow-up on participants.
Related articles
No related articles for this study have been submitted to any journal.
The study sponsor and funders had no role in the design, analysis or interpretation of this data. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
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Fotheringham J, Barnes T, Dunn L, Lee S, Ariss S, Young T, Walters SJ, Laboi P, Henwood A, Gair R, Wilkie M. A breakthrough series collaborative to increase patient participation with hemodialysis tasks: A stepped wedge cluster randomised controlled trial. PLoS One 2021; 16:e0253966. [PMID: 34283851 PMCID: PMC8291659 DOI: 10.1371/journal.pone.0253966] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/14/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Compared to in-centre, home hemodialysis is associated with superior outcomes. The impact on patient experience and clinical outcomes of consistently providing the choice and training to undertake hemodialysis-related treatment tasks in the in-centre setting is unknown. METHODS A stepped-wedge cluster randomised trial in 12 UK renal centres recruited prevalent in-centre hemodialysis patients with sites randomised into early and late participation in a 12-month breakthrough series collaborative that included data collection, learning events, Plan-Study-Do-Act cycles, and teleconferences repeated every 6 weeks, underpinned by a faculty, co-production, materials and a nursing course. The primary outcome was the proportion of patients undertaking five or more hemodialysis-related tasks or home hemodialysis. Secondary outcomes included independent hemodialysis, quality of life, symptoms, patient activation and hospitalisation. ISRCTN Registration Number 93999549. RESULTS 586 hemodialysis patients were recruited. The proportion performing 5 or more tasks or home hemodialysis increased from 45.6% to 52.3% (205 to 244/449, difference 6.2%, 95% CI 1.4 to 11%), however after analysis by step the adjusted odds ratio for the intervention was 1.63 (95% CI 0.94 to 2.81, P = 0.08). 28.3% of patients doing less than 5 tasks at baseline performed 5 or more at the end of the study (69/244, 95% CI 22.2-34.3%, adjusted odds ratio 3.71, 95% CI 1.66-8.31). Independent or home hemodialysis increased from 7.5% to 11.6% (32 to 49/423, difference 4.0%, 95% CI 1.0-7.0), but the remaining secondary endpoints were unaffected. CONCLUSIONS Our intervention did not increase dialysis related tasks being performed by a prevalent population of centre based patients, but there was an increase in home hemodialysis as well as an increase in tasks among patients who were doing fewer than 5 at baseline. Further studies are required that examine interventions to engage people who dialyse at centres in their own care.
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Affiliation(s)
- James Fotheringham
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
| | - Tania Barnes
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
| | - Louese Dunn
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
| | - Sonia Lee
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
| | - Steven Ariss
- School of Health and Related Research, University of Sheffield, Sheffield, England
| | - Tracey Young
- School of Health and Related Research, University of Sheffield, Sheffield, England
| | - Stephen J. Walters
- School of Health and Related Research, University of Sheffield, Sheffield, England
| | - Paul Laboi
- Renal Department, York Teaching Hospital NHS Foundation Trust, York, England
| | - Andy Henwood
- Renal Department, York Teaching Hospital NHS Foundation Trust, York, England
| | - Rachel Gair
- Think Kidneys, UK Renal Registry, Bristol, England
| | - Martin Wilkie
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
- * E-mail:
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Keane D, Glyde M, Dasgupta I, Gardiner C, Lindley E, Mitra S, Palmer N, Dye L, Wright M, Sutherland E. Patient perspectives of target weight management and ultrafiltration in haemodialysis: a multi-center survey. BMC Nephrol 2021; 22:188. [PMID: 34016069 PMCID: PMC8138996 DOI: 10.1186/s12882-021-02399-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/30/2021] [Indexed: 12/29/2022] Open
Abstract
Background Decisions around planned ultrafiltration volumes are the only part of the haemodialysis prescription decided upon at every session. Removing too much fluid or too little is associated with both acute symptoms and long-term outcomes. The degree to which patients engage with or influence decision-making is not clear. We explored patient perspectives of prescribing ultrafiltration volumes, their understanding of the process and engagement with it. Methods A questionnaire developed for this study was administered to 1077 patients across 10 UK Renal Units. Factor analysis reduced the dataset into factors representing common themes. Relationships between survey results and factors were investigated using regression models. ANCOVA was used to explore differences between Renal Units. Results Patients generally felt in control of their fluid management and that they were given the final say on planned ultrafiltration volumes. Around half of the respondents reported they take an active role in their treatment. However, respondents were largely unable to relate signs and symptoms to fluid management practice and a third said they would not report common signs and symptoms to clinicians. A fifth of patients reported not to know how ultrafiltration volumes were calculated. Patients responded positively to questions relating to healthcare staff, though with significant variation between units, highlighting differences in perception of care. Conclusions Despite a lack of formal acknowledgement in fluid management protocols, patients have significant involvement in decisions regarding fluid removal during dialysis. Furthermore, substantial gaps remain in patient knowledge and engagement. Formalizing the role of patients in these decisions, including patient education, may improve prescription and achievement of target weights. Supplementary Information The online version contains supplementary material available at 10.1186/s12882-021-02399-7.
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Affiliation(s)
- David Keane
- Renal Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK. .,Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK.
| | - Megan Glyde
- School of Psychology, University of Leeds, Leeds, UK
| | - Indranil Dasgupta
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | | | | | - Sandip Mitra
- Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, UK.,Devices for Dignity, NIHR MedTech & In-vitro Diagnostics Co-operative, Sheffield, UK
| | | | - Louise Dye
- School of Psychology, University of Leeds, Leeds, UK
| | - Mark Wright
- Renal Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Ed Sutherland
- School of Psychology, University of Leeds, Leeds, UK
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Gao Y, Shan Y, Jiang T, Cai L, Zhang F, Jiang X, Li X, Wang H. Dietary Adherence, Self-Regulatory Fatigue and Trait Self-Control Among Chinese Patients with Peritoneal Dialysis: A Cross-Sectional Study. Patient Prefer Adherence 2021; 15:443-451. [PMID: 33658768 PMCID: PMC7920602 DOI: 10.2147/ppa.s298231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 02/04/2021] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Little is known about factors that predict dietary adherence among Chinese patients undergoing peritoneal dialysis. We investigated whether self-regulatory fatigue and trait self-control influence dietary adherence among Chinese patients with peritoneal dialysis. METHODS A total of 192 Chinese patients undergoing peritoneal dialysis were recruited at two peritoneal dialysis centers. The dietary adherence, trait self-control and self-regulatory fatigue of these patients were assessed using self-administered questionnaires. Clinical data were extracted from the hospital medical records. The significance of several social demographic factors on dietary adherence was analyzed using One-way ANOVA was used to analyze, whereas the association between dietary adherence and self-regulatory fatigue as well as trait self-control were analyzed using Pearson correlation. The independence association between dietary adherence and other influencing factors was assessed using Multivariable linear regression analyses. RESULTS We found that peritoneal dialysis patients only moderately adhere to dietary prescriptions. The top three least adherences were observed for salt intake (1.89±0.36), face of difficulty (2.86±0.26) and fluid restriction adherence intake (2.97±0.30). Multivariable linear regression analysis revealed that education level (β=0.339, P<0.001), residence (β=-0.151, P=0.015), self-regulatory fatigue (β= -0.648, P<0.001), and trait self-control (β=0.118, P=0.022) were independent predictors of dietary adherence. CONCLUSION Education level and residence strongly influence dietary adherence among Chinese peritoneal dialysis patients. On the other hand, Self-regulatory fatigue and trait self-control are independent predictors of dietary adherence among peritoneal dialysis patients. These findings can guide the enhancement of dietary adherence of peritoneal dialysis patients.
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Affiliation(s)
- Yajing Gao
- Nursing and Health School of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
| | - Yan Shan
- Medical School of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
- Correspondence: Yan Shan Email
| | - Tingting Jiang
- Zhengzhou University First Affiliated Hospital, Zhengzhou, Henan, People’s Republic of China
| | - Li Cai
- Renji Hospital Affiliated to Shanghai Jiao Tong University, Shangai, People’s Republic of China
| | - Fanliang Zhang
- Zhengzhou University First Affiliated Hospital, Zhengzhou, Henan, People’s Republic of China
| | - Xinxin Jiang
- Nursing and Health School of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
| | - Xue Li
- Nursing and Health School of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
| | - Hong Wang
- Nursing and Health School of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
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Fotheringham J, Latimer N, Froissart M, Kronenberg F, Stenvinkel P, Floege J, Eckardt KU, Wheeler DC. Survival on four compared with three times per week haemodialysis in high ultrafiltration patients: an observational study. Clin Kidney J 2020; 14:665-672. [PMID: 33623692 PMCID: PMC7886573 DOI: 10.1093/ckj/sfaa250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/26/2020] [Indexed: 12/26/2022] Open
Abstract
Background The harm caused by the long interdialytic interval in three-times-per-week haemodialysis regimens (3×WHD) may relate to fluid accumulation and associated high ultrafiltration rate (UFR). Four-times-per-week haemodialysis (4×WHD) may offer a solution, but its impact on mortality, hospitalization and vascular access complications is unknown. Methods From the AROii cohort of incident in-centre haemodialysis patients, 3×WHD patients with a UFR >10 mL/kg/h were identified. The hazard for the outcomes of mortality, hospitalization and vascular access complications in those who switched to 4×WHD compared with staying on 3×WHD was estimated using a marginal structural Cox proportional hazards model. Adjustment included baseline patient and treatment characteristics with inverse probability weighting used to adjust for time-varying UFR and cardiovascular comorbidities. Results From 10 637 European 3×WHD patients, 3842 (36%) exceeded a UFR >10 mL/kg/h. Of these, 288 (7.5%) started 4×WHD and at baseline were more comorbid. Event rates while receiving 4×WHD compared with 3×WHD were 12.6 compared with 10.8 per 100 patient years for mortality, 0.96 compared with 0.65 per year for hospitalization and 14.7 compared with 8.0 per 100 patient years for vascular access complications. Compared with 3×WHD, the unadjusted hazard ratio (HR) for mortality on 4×WHD was 1.05 [95% confidence interval (CI) 0.78–1.42]. Following adjustment for baseline demographics, time-varying treatment probability and censoring risks, this HR was 0.73 (95% CI 0.50–1.05; P = 0.095). Despite these adjustments on 4×WHD, the HR for hospitalization remained elevated and vascular access complications were similar to 3×WHD. Conclusions This observational study was not able to demonstrate a mortality benefit in patients switched to 4×WHD. To demonstrate the true benefits of 4×WHD requires a large, well-designed clinical trial. Our data may help in the design of such a study.
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Affiliation(s)
- James Fotheringham
- Sheffield Kidney Institute, Sheffield Teaching Hospitals, Sheffield, UK
- School of Health and Related Research, University of Sheffield, Sheffield, UK
- Correspondence to: James Fotheringham; E-mail:
| | - Nicholas Latimer
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Marc Froissart
- Clinical Trial Unit, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Florian Kronenberg
- Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Peter Stenvinkel
- Department of Renal Medicine, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Jürgen Floege
- Department of Nephrology, RWTH Aachen University Hospital, Aachen, Germany
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité–Universitätsmedizin-Berlin, Berlin, Germany
| | - David C Wheeler
- Department of Renal Medicine, University College London, UK
- George Institute for Global Health, Sydney, New South Wales, Australia
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Pahus J, Lindberg M, Finderup J, Ludvigsen MS. The Fluid Intake Appraisal Inventory for low fluid intake among patients on haemodialysis: Translation and psychometric evaluation of the Danish version. Scand J Caring Sci 2020; 35:1152-1159. [PMID: 33200436 DOI: 10.1111/scs.12931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 11/27/2022]
Abstract
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.
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Affiliation(s)
- Jytte Pahus
- Health and Welfare Technology, VIA University College, Silkeborg, Denmark
| | - Magnus Lindberg
- Faculty of Health and Occupational Studies, Department of Caring Sciences, University of Gävle, Gävle, Sweden.,Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Jeanette Finderup
- Department of Renal Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Mette Spliid Ludvigsen
- Department of Clinical Medicine, Randers Regional Hospital, Aarhus University, Aarhus, Denmark.,Faculty of Nursing and Health Sciences, Nord University, Bodø, Norway
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Huang JC, Tsai YC, Wu PY, Lien YH, Chien CY, Kuo CF, Hung JF, Chen SC, Kuo CH. Predictive modeling of blood pressure during hemodialysis: a comparison of linear model, random forest, support vector regression, XGBoost, LASSO regression and ensemble method. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 195:105536. [PMID: 32485511 DOI: 10.1016/j.cmpb.2020.105536] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/30/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Intradialytic hypotension (IDH) is commonly occurred and links to higher mortality among patients undergoing hemodialysis (HD). Its early prediction and prevention will dramatically improve the quality of life. However, predicting the occurrence of IDH clinically is not simple. The aims of this study are to develop an intelligent system with capability of predicting blood pressure (BP) during HD, and to further compare different machine learning algorithms for next systolic BP (SBP) prediction. METHODS This study presented comprehensive comparisons among linear regression model, least absolute shrinkage and selection operator (LASSO), tree-based ensemble machine learning models (random forest [RF] and extreme gradient boosting [XGBoost]), and support vector regression to predict the BP during HD treatment based on 200 and 48 maintenance HD patients containing a total of 7,180 and 2,065 BP records for the training and test dataset, respectively. Ensemble method also was computed to obtain better predictive performance. We compared the developed models based on R2, root mean square error (RMSE) and mean absolute error (MAE). RESULTS We found that RF (R2=0.95, RMSE=6.64, MAE=4.90) and XGBoost (R2=1.00, RMSE=1.83, MAE=1.29) had comparable predictive performance on the training dataset. However, RF (R2=0.49, RMSE=16.24, MAE=12.14) had more accurate than XGBoost (R2=0.41, RMSE=17.65, MAE=13.47) on testing dataset. Among these models, the ensemble method (R2=0.50, RMSE=16.01, MAE=11.97) had the best performance on testing dataset for next SBP prediction. CONCLUSIONS We compared five machine learning and an ensemble method for next SBP prediction. Among all studied algorithms, the RF and the ensemble method have the better predictive performance. The prediction models using ensemble method for intradialytic BP profiling may be able to assist the HD staff or physicians in individualized care and prompt intervention for patients' safety and improve care of HD patients.
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Affiliation(s)
- Jiun-Chi Huang
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Chun Tsai
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Yu Wu
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | | | - Chih-Feng Kuo
- Graduate Institute of Science Education and Environmental Education, National Kaohsiung Normal University, Kaohsiung, Taiwan
| | - Jeng-Fung Hung
- Graduate Institute of Science Education and Environmental Education, National Kaohsiung Normal University, Kaohsiung, Taiwan
| | - Szu-Chia Chen
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chao-Hung Kuo
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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10
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Nair D, Wilson FP. Patient-Reported Outcome Measures for Adults With Kidney Disease: Current Measures, Ongoing Initiatives, and Future Opportunities for Incorporation Into Patient-Centered Kidney Care. Am J Kidney Dis 2019; 74:791-802. [PMID: 31492487 PMCID: PMC6875620 DOI: 10.1053/j.ajkd.2019.05.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/11/2019] [Indexed: 01/21/2023]
Abstract
Tools that measure patients' experiences and perceptions of disease are increasingly being recognized as important components of a multidisciplinary personalized approach to care. These patient-reported outcome measures (PROMs) have the ability to provide clinicians, researchers, and policymakers with valuable insights into patients' symptoms and experiences that are unable to be ascertained by laboratory markers alone. If developed rigorously, studied systematically, and used judiciously, PROMs can effectively incorporate the patient voice into clinical care, clinical trials, and health care policy. PROMs have continued to gain attention and interest within the nephrology community, but key challenges and opportunities for their seamless uptake and integration remain. In this narrative overview, we provide nephrologists with a comprehensive list of existing PROMs developed for adults with kidney disease with information on their gaps and limitations; a rationale to support the continued incorporation of PROMs into nephrology clinical trials, clinical care, and health care policy; and a summary of ongoing initiatives and future opportunities to do so.
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Affiliation(s)
- Devika Nair
- Vanderbilt University Medical Center, Nashville, TN; Vanderbilt Center for Kidney Disease, Nashville, TN
| | - F Perry Wilson
- Program of Applied Translational Research, Yale University School of Medicine, New Haven, CT.
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11
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Fotheringham J, Sajjad A, Stel VS, McCullough K, Karaboyas A, Wilkie M, Bieber B, Robinson BM, Massy ZA, Jager KJ. The association between longer haemodialysis treatment times and hospitalization and mortality after the two-day break in individuals receiving three times a week haemodialysis. Nephrol Dial Transplant 2019; 34:1577-1584. [PMID: 30820580 PMCID: PMC6735689 DOI: 10.1093/ndt/gfz007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND On the first haemodialysis (HD) day after the 2-day break in three times a week (3×W) in-centre HD, mortality and hospitalization are higher. If longer HD sessions prescribed 3×W is associated with a reduction in these events is unknown. METHODS HD session length in 19 557 prevalent European in-centre 3×W HD patients participating in the Dialysis Outcomes and Practice Patterns Study (1998-2011) were categorized into <200, 200-225, 226-250 or >250 min. Standardized event rates on the first (HD1) versus the second (HD2) HD day after the 2-day break, with supporting Cox proportional hazards models adjusted for patient and dialysis characteristics, were generated for all-cause mortality, all-cause hospitalization, out-of-hospital death and fluid overload hospitalization. RESULTS By comparing HD1 with HD2, increased rates of all endpoints were observed (all P < 0.002). As HD session lengthened across the four groups, all-cause mortality per 100 patient-years on the HD1 (23.0, 20.4, 16.4 and 14.6) and HD2 (26.1, 13.3, 13.4 and 12.1) reduced. Similar improvements were observed for out-of-hospital death but were less marked for hospitalization endpoints. However, even patients dialysing >250 min were at significantly greater risk on HD1 when compared with their HD2 for out-of-hospital death [hazard ratio (HR) = 2.1, 95% CI 1.0-4.3], all-cause hospitalization (HR = 1.3, 95% CI 1.2-1.4) and fluid overload hospitalization (HR = 3.2, 95% CI 1.8-6.0). CONCLUSIONS Despite the association between reduced mortality across all dialysis days in patients performing longer sessions, elevated risk on the first dialysis day relative to the second persists even in patients dialysing 4.5 h 3×W.
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Affiliation(s)
- James Fotheringham
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, UK
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Ayesha Sajjad
- European Renal Association-European Dialysis and Transplant Association Registry, Department of Medical Informatics, Academic Medical Center, University of Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Vianda S Stel
- European Renal Association-European Dialysis and Transplant Association Registry, Department of Medical Informatics, Academic Medical Center, University of Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | | | | | - Martin Wilkie
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, UK
| | - Brian Bieber
- Arbor Research Collaborative for Health, Ann Arbor, MI, USA
| | | | - Ziad A Massy
- Division of Nephrology, Ambroise Paré University Hospital, APHP, University of Versailles-Saint-Quentin-en-Yvelines, Boulogne-Billancourt, France
- INSERM Unit 1018, CESP, University Paris-Saclay, University of Versailles-Saint-Quentin-en-Yvelines, Université Paris Sud, Villejuif, France
| | - Kitty J Jager
- European Renal Association-European Dialysis and Transplant Association Registry, Department of Medical Informatics, Academic Medical Center, University of Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
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12
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Van Buren PN. Relative blood volume monitoring in hemodialysis patients: identifying its appropriate role. Nephrol Dial Transplant 2019; 34:1251-1253. [PMID: 30590685 PMCID: PMC8204707 DOI: 10.1093/ndt/gfy368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/05/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Peter Noel Van Buren
- Department of Internal Medicine, Division of Nephrology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- North Texas Veterans Affairs Hospital, Dallas, TX, USA
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13
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Tugman MJ, Narendra JH, Li Q, Wang Y, Hinderliter AL, Brunelli SM, Flythe JE. Ultrafiltration-profiled hemodialysis to reduce dialysis-related cardiovascular stress: Study protocol for a randomized controlled trial. Contemp Clin Trials Commun 2019; 15:100415. [PMID: 31372573 PMCID: PMC6661273 DOI: 10.1016/j.conctc.2019.100415] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/24/2019] [Accepted: 07/18/2019] [Indexed: 12/12/2022] Open
Abstract
Rapid fluid removal (ultrafiltration, UF) is associated with higher cardiovascular morbidity and mortality among individuals receiving maintenance hemodialysis (HD). Fluid removal rates that exceed vascular refill rates can result in hemodynamic instability, end-organ damage to the heart, kidneys, gut and brain, among other organs, and patient symptoms. There are no known evidence-based HD treatment strategies to reduce harm from higher UF rates. Ultrafiltration profiling, the practice of varying UF rates to maximize fluid removal during periods of greatest hydration and plasma oncotic pressure, has been proposed as an HD treatment intervention that may reduce UF rate-related complications. This study is a randomized 4-phase cross-over trial in which participants are successively alternated between study arms with intervening washout periods, and treatment order is randomized. After 4-week screening and 6-week baseline periods, participants are randomized to HD with conventional UF or HD with UF profiling for a period of 3 weeks followed by a 1-week washout period before crossing over. Participants cross into conventional UF and UF profiling phases twice (2 phases per arm). The primary outcomes of interest are intradialytic hypotension (nadir intradialytic systolic blood pressure <90 mmHg), pre-to post-HD change in troponin T (expressed as a percentage), change in left ventricular global longitudinal strain (an echocardiographic measure of left ventricular systolic function), and development of intradialytic left ventricular stunning (worsening of contractile function in ≥2 segments). This study will determine the impact of UF profiling on UF rate-related cardiovascular complications in prevalent, maintenance HD patients.
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Affiliation(s)
- Matthew J Tugman
- University of North Carolina (UNC) Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC, USA
| | - Julia H Narendra
- University of North Carolina (UNC) Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC, USA
| | - Quefeng Li
- Department of Biostatistics, UNC Gillings School of Global Public Health, Chapel Hill, NC, USA
| | - Yueting Wang
- Department of Biostatistics, UNC Gillings School of Global Public Health, Chapel Hill, NC, USA
| | - Alan L Hinderliter
- Division of Cardiology, Department of Medicine, UNC School of Medicine, Chapel Hill, NC, USA
| | | | - Jennifer E Flythe
- University of North Carolina (UNC) Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC, USA.,Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC, USA
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14
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Abstract
Objective: Ultrafiltration rate is one of the major determinants of adverse outcomes in patients undergoing hemodialysis (HD) therapy. Previous studies have focused on the impact of HD on right ventricular (RV) peak strain values. However, the influence of HD on the temporal characteristics of deformation has not been reported yet. The aim of the present study was to evaluate the impact of high ultrafiltration rate (HUR) on RV mechanical dyssynchrony. Methods: Echocardiographic images focused on the RV and left ventricle (LV) were obtained from 60 patients (49.2±17.3 years, 22 female) before and after HD. Patients were divided into two groups according to ultrafiltration rate. Changes in echocardiographic parameters with HD were examined. Two-dimensional speckle-tracking strain analysis was used to assess deformation. Mechanical dispersion was measured as the standard deviation of time to peak longitudinal strain of six segments for RV and 18 segments for LV. Results: The average ultrafiltrated volume and ultrafiltration rate were 3000.1±1007.9 mL and 11.4±2.9 mL/kg/h, respectively. Global longitudinal strain (GLS) of the RV and LV decreased after HD in both groups. A significant difference was observed in RV mechanical dispersion with HD for patients in the high ultrafiltration group. A mild statistically insignificant increase in LV mechanical dispersion was also observed after HD. Conclusion: HUR has a substantial impact on LV and RV GLS and RV dyssynchrony. Ultrafiltration rates and volumes should be kept as low as possible to achieve hemodynamic stability and tolerability.
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15
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Glyde M, Keane D, Dye L, Sutherland E. Patients' perceptions of their experience, control and knowledge of fluid management when receiving haemodialysis. J Ren Care 2019; 45:83-92. [PMID: 30938066 DOI: 10.1111/jorc.12275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Person-centred care is increasingly promoted, empowering patients to become more involved in their treatment rather than being passive recipients of care (Barnes et al. 2013). Haemodialysis is typically required three times a week, with fluid management decision-making occurring at each treatment session (Ahmed et al. 2017). However, no research has yet explored how haemodialysis patients' perceptions of their fluid management may impact upon this decision-making. OBJECTIVES This study sought to explore patients' perceptions of their fluid management. METHOD DESIGN, PARTICIPANTS & APPROACH: Semi-structured interviews were conducted with 12 patients undergoing in-hospital haemodialysis treatment. These were digitally recorded one-to-one interviews to allow for verbatim transcription. The data was analysed by thematic analysis, generating thematic patterns across patients' experiences, control and knowledge of their fluid management. RESULTS Five themes were produced: determining who has the expertise, impediments affecting patients' lifestyle, additional difficulty of experiencing comorbidities, perceived quality of care, and establishing consistency. CONCLUSIONS Despite varied levels of patient participation in their treatment, overall there appears to be a limited understanding of specific areas of fluid management. The implications for further research and the development of shared-care are discussed.
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Affiliation(s)
- Megan Glyde
- School of Psychology, University of Leeds, Leeds, UK
| | - David Keane
- St. James' Hospital, Renal Medicine, Renal Research, Leeds, UK
| | - Louise Dye
- School of Psychology, University of Leeds, Leeds, UK
| | - Ed Sutherland
- School of Psychology, University of Leeds, Leeds, UK
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16
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Duggal V, Hussein WF, Reiterman M, Sun SJ, Abra GE, Schiller B. The effect of blood flow rate on dialysis recovery time in patients undergoing maintenance hemodialysis: A prospective, parallel-group, randomized controlled trial. Hemodial Int 2019; 23:223-229. [PMID: 30834652 DOI: 10.1111/hdi.12741] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 01/08/2023]
Abstract
INTRODUCTION A majority of patients with end-stage renal disease (ESRD) on in-center hemodialysis (HD) require several hours to recover from an HD session. Patients and caregivers identify fatigue as a high priority for improvement. However, evidence for practical interventions to improve recovery time from conventional in-center HD is lacking. The effect of blood flow rate reduction on dialysis recovery time (DRT) is unknown. METHODS Multicenter, single-blinded, randomized, parallel-design controlled trial of blood flow rate reduction vs. usual care. One-hundred two patients with ESRD undergoing maintenance HD in 18 centers with baseline DRT of greater than 6 hours were included as subjects. The intervention was a blood flow rate reduction of 100 mL/min, to a minimum of 300 mL/min. The primary outcome was the between-group difference in change in DRT. Secondary outcomes were changes in London Evaluation of Illness (LEVIL) survey responses from baseline. FINDINGS Baseline median DRT was 720 (IQR 360-1013) minutes in controls and 720 (IQR 360-1106) minutes in the intervention group. DRT decreased in both groups. Mean change from baseline (95% confidence interval) at Week 4 in the study was -324 (-473, -175) minutes in the control group and -120 (-329, 90) minutes in the intervention group. The change from baseline was more profound in the control group (P = 0.05). Secondary outcomes of measures of quality of life reported on the LEVIL survey showed more improvement in patients' feelings of general well-being in the control group (P = 0.01). Differences between groups in pain, feeling washed out or drained, sleep quality, shortness of breath, and appetite were not statistically significant. DISCUSSION Blood flow rate reduction did not improve DRT over usual care. Though more work needs to be done to address patient-reported fatigue, a significant positive impact may not be achieved without substantial changes in dialysis prescription.
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Affiliation(s)
- Vishal Duggal
- Department of Medicine, Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA.,Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
| | - Wael F Hussein
- Department of Medicine, Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA.,Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
| | - Marc Reiterman
- Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
| | - Sumi J Sun
- Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
| | - Graham E Abra
- Department of Medicine, Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA.,Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
| | - Brigitte Schiller
- Department of Medicine, Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA.,Medical Clinical Affairs, Satellite Healthcare, California, San Jose, USA
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17
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Chou JA, Streja E, Nguyen DV, Rhee CM, Obi Y, Inrig JK, Amin A, Kovesdy CP, Sim JJ, Kalantar-Zadeh K. Intradialytic hypotension, blood pressure changes and mortality risk in incident hemodialysis patients. Nephrol Dial Transplant 2018; 33:149-159. [PMID: 28444336 DOI: 10.1093/ndt/gfx037] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 02/06/2017] [Indexed: 12/15/2022] Open
Abstract
Background Intradialytic hypotension (IDH) occurs frequently in maintenance hemodialysis (HD) patients and may be associated with higher mortality. We hypothesize that nadir intradialytic systolic blood pressure (niSBP) is inversely related to death risk while iSBP change (Δ) and IDH frequency are incrementally associated with all-cause mortality. Methods In a US-based cohort of 112 013 incident HD patients over a 5-year period (2007-11), using niSBP, ΔiSBP (pre-HD SBP minus niSBP) and IDH frequency (proportion of HD treatments with niSBP <90 mmHg) within the first 91 days of HD, we examined mortality-predictability at 1, 2 and 5 years using Cox models and restricted cubic splines adjusted for case-mix, comorbidities and laboratory covariates. Results We observed that niSBP of <90 and ≥140 mmHg had a 5-year mortality hazard ratio (HR) (95% confidence interval) of 1.57 (1.47-1.67) and 1.25 (1.18-1.33), respectively, compared with niSBP 110 to <120 mmHg. ΔiSBP of <15 and ≥50 compared with 21-30 mmHg had mortality HR of 1.31 (1.26-1.37) and 1.32 (1.24-1.39), respectively. Among patients with >40% IDH frequency, we observed a mortality HR of 1.49 (1.42-1.57) compared with 0% IDH frequency in fully adjusted models. These associations were robust at 1 and 2 years of follow-up. Conclusion In conclusion, we observed a U-shaped association between niSBP and ΔiSBP and mortality and a direct linear relationship between IDH frequency and mortality. Our findings lend some prognostic insight of HD blood pressure and hemodynamics, and have the potential to guide blood pressure management strategies among the HD population.
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Affiliation(s)
- Jason A Chou
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
| | - Danh V Nguyen
- Department of Medicine, University of California, Irvine, School of Medicine, Orange, CA, USA
| | - Connie M Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
| | - Jula K Inrig
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA.,Quintiles Therapeutic Science and Strategy Unit, San Diego, California
| | - Alpesh Amin
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
| | - Csaba P Kovesdy
- Division of Nephrology, University of Tennessee Health Science Center, Memphis, TN, USA.,Nephrology Section, Memphis VA Medical Center, Memphis, TN, USA
| | - John J Sim
- Division of Nephrology and Hypertension, Kaiser Permanente Medical Center, Los Angeles, CA, USA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA.,Fielding School of Public Health at UCLA, Los Angeles, CA, USA.,Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA, USA
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18
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Flythe JE, Hilliard T, Lumby E, Castillo G, Orazi J, Abdel-Rahman EM, Pai AB, Rivara MB, St Peter WL, Weisbord SD, Wilkie CM, Mehrotra R. Fostering Innovation in Symptom Management among Hemodialysis Patients: Paths Forward for Insomnia, Muscle Cramps, and Fatigue. Clin J Am Soc Nephrol 2018; 14:150-160. [PMID: 30397026 PMCID: PMC6364524 DOI: 10.2215/cjn.07670618] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Individuals receiving in-center maintenance hemodialysis bear a high burden of both physical and mood symptoms. More than half of patients on hemodialysis report sleep disturbance, muscle cramps, and fatigue. Patients describe symptoms as having a deleterious effect on their quality of life, suggesting that symptom alleviation may meaningfully improve patient-reported outcomes. Moreover, patients on hemodialysis have identified symptom management as a key area for research and innovation, prioritizing symptom alleviation over other health outcomes such as mortality and biochemical indices. Despite the importance of symptoms to patients, there has been little research explicitly geared toward improving patient symptoms, and therefore minimal innovation in symptom management. In general, the physiologic underpinnings of symptoms are poorly understood, hampering the development of targeted therapies. In fact, there have been few drugs or devices approved by the US Food and Drug Administration for the indication of improving any patient-reported outcomes for patients on hemodialysis. Recognizing this gap in innovation, the Kidney Health Initiative, a public-private partnership between the American Society of Nephrology and US Food and Drug Administration, convened a workgroup to first prioritize symptoms for the development of therapeutic interventions, and then identify near-term actionable research goals for the prioritized physical symptoms of insomnia, muscle cramps, and fatigue. This paper summarizes the pathophysiology of the three prioritized symptoms, identifies key knowledge gaps, acknowledges factors that challenge development of new therapies, and offers the nephrology community actionable research goals for insomnia, muscle cramps, and fatigue.
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Affiliation(s)
- Jennifer E Flythe
- Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, University of North Carolina Kidney Center, Chapel Hill, North Carolina; .,Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, North Carolina
| | | | - Elena Lumby
- American Institutes for Research, Washington, D.C
| | | | | | - Emaad M Abdel-Rahman
- Division of Nephrology, Department of Medicine, University of Virginia Health System, Charlottesville, Virginia
| | - Amy Barton Pai
- University of Michigan College of Pharmacy, Ann Arbor, Michigan
| | - Matthew Bertrand Rivara
- Division of Nephrology, Department of Medicine, Kidney Research Institute, University of Washington, Seattle, Washington.,Harborview Medical Center, Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington
| | - Wendy L St Peter
- Chronic Disease Research Group, Minneapolis Medical Research Foundation, Minneapolis, Minnesota.,College of Pharmacy, University of Minnesota, Minneapolis, Minnesota
| | - Steven Darrow Weisbord
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania.,Renal Section, Medicine Service Line, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania; and
| | | | - Rajnish Mehrotra
- Division of Nephrology, Department of Medicine, Kidney Research Institute, University of Washington, Seattle, Washington.,Harborview Medical Center, Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington
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19
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Gosmanova EO, Kovesdy CP. Patient-Centered Approach for Hypertension Management in End-Stage Kidney Disease: Art or Science? Semin Nephrol 2018; 38:355-368. [PMID: 30082056 DOI: 10.1016/j.semnephrol.2018.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Hypertension is present in most patients with end-stage kidney disease initiating dialysis and management of hypertension is a routine but challenging task in everyday dialysis care. End-stage kidney disease patients are uniquely heterogeneous individuals with significant variations in demographic characteristics, functional capacity, and presence of concomitant comorbid conditions and their severity. Therefore, these patients require personalized approaches in addressing not only hypertension but related illnesses, while also accounting for overall prognosis and projected longevity. There are only limited clinical trial data to guide individualized blood pressure management and current guidelines are based predominantly on observational evidence and expert opinions. Inthis review, we reflect on the shortcomings of peridialytic blood pressure recordings and discuss an important paradigm shift toward using out-of-dialysis blood pressure for evaluating hypertension control and for making treatment decisions. In addition, we provide our personal view on blood pressure goals and summarize nonpharmacologic and pharmacologic treatment options for individualized management of hypertension in end-stage kidney disease.
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Affiliation(s)
- Elvira O Gosmanova
- Nephrology Section, Stratton VA Medical Center, Albany, NY.; Division of Nephrology, Department of Medicine, Albany Medical College, Albany, NY
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of TennesseeHealth Science Center, Memphis, TN.; Nephrology Section, Memphis VA Medical Center, Memphis, TN..
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20
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Golestaneh L. Decreasing hospitalizations in patients on hemodialysis: Time for a paradigm shift. Semin Dial 2018; 31:278-288. [DOI: 10.1111/sdi.12675] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ladan Golestaneh
- Nephrology Division; Department of Medicine; Montefiore Medical Center; Albert Einstein College of Medicine; Bronx NY USA
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21
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Abstract
PURPOSE OF REVIEW This review focuses on recent advances in our understanding of intradialytic hypotension (IDH) and measures that may reduce its frequency. RECENT FINDINGS The frequency and severity of IDH predict the risk for adverse clinical outcomes. The highest mortality risks associated with IDH were observed when the intradialytic systolic blood pressure (SBP) nadirs were <90 and <100 mmHg and the predialysis SBP were ≤159 mmHg or ≥160 mmHg, respectively. Interdialytic weight gain (IDWG) ≥3 kg occurs more frequently among patients with IDH. Prolonged and possibly more frequent dialysis, use of biofeedback devices, dialysate cooling and limiting sodium loading are useful measures to reduce the frequency of IDH. SUMMARY Frequent IDH is associated with high IDWGs and a poor prognosis. Studies on prolonged dialysis, biofeedback devices and cooled dialysate have yielded promising results. Intradialytic relative blood volume monitoring devices have been investigated in preventing IDH but results are mixed. Administration of a sodium/hydrogen exchange isoform 3 inhibitor increases stool sodium but has not been shown to decrease IDWG. IDH continues to be a significant dialysis complication deserving of further investigation.
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22
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Abstract
PURPOSE OF REVIEW Volume management in hemodialysis patients is often challenging. Assessing volume status and deciding how much fluid to remove during hemodialysis, the so-called ultrafiltration rate (UFR), has remained a conundrum. RECENT FINDINGS To date there is no objective assessment tool to determine the needed UFR during each hemodialysis session. Higher volume overload or higher UFR is associated with poor outcomes including worse mortality and unfavorable clinical outcomes. We suggest combined use of the following criteria to determine UFR or post-dialysis target dry weight: pre-hemodialysis blood pressure and its intradialytic changes, muscle cramps, dyspnea from pulmonary vascular congestion, peripheral edema, tachycardia or palpitation, headache or lightheadedness, perspiration, and post-dialysis fatigue. Restricting fluid and salt intake-and high-dose loop diuretic use in cases of residual kidney function-can be helpful in controlling fluid gains. More frequent and more severe hypotensive episodes are associated with poor outcomes including higher death risk.
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Affiliation(s)
- Jason A Chou
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
- Division of Nephrology, Department of Medicine, University of California, Irvine, School of Medicine, Orange, CA, USA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA.
- Division of Nephrology, Department of Medicine, University of California, Irvine, School of Medicine, Orange, CA, USA.
- Fielding School of Public Health at UCLA, Los Angeles, CA, USA.
- Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA, USA.
- Harold Simmons Center for Kidney Disease Research & Epidemiology, Division of Nephrology & Hypertension, University of California Irvine, School of Medicine, 101 The City Drive South, City Tower, Suite 400-ZOT: 4088, Orange, CA, 92868-3217, USA.
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23
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Target weight achievement and ultrafiltration rate thresholds: potential patient implications. BMC Nephrol 2017; 18:185. [PMID: 28578687 PMCID: PMC5457585 DOI: 10.1186/s12882-017-0595-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 05/18/2017] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Higher ultrafiltration (UF) rates and extracellular hypo- and hypervolemia are associated with adverse outcomes among maintenance hemodialysis patients. The Centers for Medicare and Medicaid Services recently considered UF rate and target weight achievement measures for ESRD Quality Incentive Program inclusion. The dual measures were intended to promote balance between too aggressive and too conservative fluid removal. The National Quality Forum endorsed the UF rate measure but not the target weight measure. We examined the proposed target weight measure and quantified weight gains if UF rate thresholds were applied without treatment time (TT) extension or interdialytic weight gain (IDWG) reduction. METHODS Data were taken from the 2012 database of a large dialysis organization. Analyses considered 152,196 United States hemodialysis patients. We described monthly patient and dialysis facility target weight achievement patterns and examined differences in patient characteristics across target weight achievement status and differences in facilities across target weight measure scores. We computed the cumulative, theoretical 1-month fluid-related weight gain that would occur if UF rates were capped at 13 mL/h/kg without concurrent TT extension or IDWG reduction. RESULTS Target weight achievement patterns were stable over the year. Patients who did not achieve target weight (post-dialysis weight ≥ 1 kg above or below target weight) tended to be younger, black and dialyze via catheter, and had shorter dialysis vintage, greater body weight, higher UF rate and more missed treatments compared with patients who achieved target weight. Facilities had, on average, 27.1 ± 9.7% of patients with average post-dialysis weight ≥ 1 kg above or below the prescribed target weight. In adjusted analyses, facilities located in the midwest and south and facilities with higher proportions of black and Hispanic patients and higher proportions of patients with shorter TTs were more likely to have unfavorable facility target weight measure scores. Without TT extension or IDWG reduction, UF rate threshold (13 mL/h/kg) implementation led to an average theoretical 1-month, fluid-related weight gain of 1.4 ± 3.0 kg. CONCLUSIONS Target weight achievement patterns vary across clinical subgroups. Implementation of a maximum UF rate threshold without adequate attention to extracellular volume status may lead to fluid-related weight gain.
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Morena M, Jaussent A, Chalabi L, Leray-Moragues H, Chenine L, Debure A, Thibaudin D, Azzouz L, Patrier L, Maurice F, Nicoud P, Durand C, Seigneuric B, Dupuy AM, Picot MC, Cristol JP, Canaud B. Treatment tolerance and patient-reported outcomes favor online hemodiafiltration compared to high-flux hemodialysis in the elderly. Kidney Int 2017; 91:1495-1509. [PMID: 28318624 DOI: 10.1016/j.kint.2017.01.013] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 12/09/2016] [Accepted: 01/05/2017] [Indexed: 12/18/2022]
Abstract
Large cohort studies suggest that high convective volumes associated with online hemodiafiltration may reduce the risk of mortality/morbidity compared to optimal high-flux hemodialysis. By contrast, intradialytic tolerance is not well studied. The aim of the FRENCHIE (French Convective versus Hemodialysis in Elderly) study was to compare high-flux hemodialysis and online hemodiafiltration in terms of intradialytic tolerance. In this prospective, open-label randomized controlled trial, 381 elderly chronic hemodialysis patients (over age 65) were randomly assigned in a one-to-one ratio to either high-flux hemodialysis or online hemodiafiltration. The primary outcome was intradialytic tolerance (day 30-day 120). Secondary outcomes included health-related quality of life, cardiovascular risk biomarkers, morbidity, and mortality. During the observational period for intradialytic tolerance, 85% and 84% of patients in high-flux hemodialysis and online hemodiafiltration arms, respectively, experienced at least one adverse event without significant difference between groups. As exploratory analysis, intradialytic tolerance was also studied, considering the sessions as a statistical unit according to treatment actually received. Over a total of 11,981 sessions, 2,935 were complicated by the occurrence of at least one adverse event, with a significantly lower occurrence in online hemodiafiltration with fewer episodes of intradialytic symptomatic hypotension and muscle cramps. By contrast, health-related quality of life, morbidity, and mortality were not different in both groups. An improvement in the control of metabolic bone disease biomarkers and β2-microglobulin level without change in serum albumin concentration was observed with online hemodiafiltration. Thus, overall outcomes favor online hemodiafiltration over high-flux hemodialysis in the elderly.
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Affiliation(s)
- Marion Morena
- Laboratoire de Biochimie, CHU de Montpellier, Montpellier, France; Institut de Recherche et de Formation en Dialyse, Montpellier, France; PhyMedExp, INSERM U1046, CNRS UMR9214, Université de Montpellier, Montpellier, France
| | - Audrey Jaussent
- Département de l'Information Médicale, CHU de Montpellier, Montpellier, France
| | - Lotfi Chalabi
- Association pour l'Installation à Domicile des Epurations Rénales (AIDER), Montpellier, France
| | | | - Leila Chenine
- Service de Néphrologie, CHU de Montpellier, Montpellier, France
| | | | - Damien Thibaudin
- Service de Néphrologie, CHU de Saint Etienne, Saint-Etienne, France
| | - Lynda Azzouz
- Association Régionale pour le Traitement de l'Insuffisance Rénale Chronique, Saint-Priest-en-Jarez, France
| | | | | | | | | | | | - Anne-Marie Dupuy
- Laboratoire de Biochimie, CHU de Montpellier, Montpellier, France
| | | | - Jean-Paul Cristol
- Laboratoire de Biochimie, CHU de Montpellier, Montpellier, France; Institut de Recherche et de Formation en Dialyse, Montpellier, France; PhyMedExp, INSERM U1046, CNRS UMR9214, Université de Montpellier, Montpellier, France.
| | - Bernard Canaud
- Institut de Recherche et de Formation en Dialyse, Montpellier, France; Université de Montpellier, Néphrologie, Montpellier, France
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Tong A, Winkelmayer WC, Wheeler DC, van Biesen W, Tugwell P, Manns B, Hemmelgarn B, Harris T, Crowe S, Ju A, O’Lone E, Evangelidis N, Craig JC. Nephrologists' Perspectives on Defining and Applying Patient-Centered Outcomes in Hemodialysis. Clin J Am Soc Nephrol 2017; 12:454-466. [PMID: 28223290 PMCID: PMC5338715 DOI: 10.2215/cjn.08370816] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 11/02/2016] [Indexed: 01/15/2023]
Abstract
BACKGROUND AND OBJECTIVES Patient centeredness is widely advocated as a cornerstone of health care, but it is yet to be fully realized, including in nephrology. Our study aims to describe nephrologists' perspectives on defining and implementing patient-centered outcomes in hemodialysis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Face-to-face, semistructured interviews were conducted with 58 nephrologists from 27 dialysis units across nine countries, including the United States, the United Kingdom, Australia, Austria, Belgium, Canada, Germany, Singapore, and New Zealand. Transcripts were thematically analyzed. RESULTS We identified five themes on defining and implementing patient-centered outcomes in hemodialysis: explicitly prioritized by patients (articulated preferences and goals, ascertaining treatment burden, defining hemodialysis success, distinguishing a physician-patient dichotomy, and supporting shared decision making), optimizing wellbeing (respecting patient choice, focusing on symptomology, perceptible and tangible, and judging relevance and consequence), comprehending extensive heterogeneity of clinical and quality of life outcomes (distilling diverse priorities, highly individualized, attempting to specify outcomes, and broadening context), clinically hamstrung (professional deficiency, uncertainty and complexity in measurement, beyond medical purview, specificity of care, mechanistic mindset [focused on biochemical targets and comorbidities], avoiding alarm, and paradoxical dilemma), and undermined by system pressures (adhering to overarching policies, misalignment with mandates, and resource constraints). CONCLUSIONS Improving patient-centered outcomes is regarded by nephrologists to encompass strategies that address patient goals and improve wellbeing and treatment burden in patients on hemodialysis. However, efforts are hampered by ambiguities about how to prioritize, measure, and manage the plethora of critical comorbidities and broader quality of life outcomes in a care setting that is technically demanding and driven by biochemical targets. Identifying critical patient-important outcomes and mechanisms for integrating them into practice may help to deliver patient-centered care in hemodialysis and other chronic disease settings.
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Affiliation(s)
- Allison Tong
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - Wolfgang C. Winkelmayer
- Selzman Institute for Kidney Health, Section of Nephrology, Baylor College of Medicine, Houston, Texas
| | - David C. Wheeler
- Centre for Nephrology, University College London, London, United Kingdom
| | - Wim van Biesen
- Renal Division, Ghent University Hospital, Ghent, Belgium
| | - Peter Tugwell
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Braden Manns
- Departments of Medicine and
- Community Health Sciences, Libin Cardiovascular Institute and O’Brien Institute of Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Brenda Hemmelgarn
- Departments of Medicine and
- Community Health Sciences, Libin Cardiovascular Institute and O’Brien Institute of Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Tess Harris
- Polycystic Kidney Disease International, London, United Kingdom; and
| | - Sally Crowe
- Crowe Associates Ltd, Oxford, United Kingdom
| | - Angela Ju
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - Emma O’Lone
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - Nicole Evangelidis
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - Jonathan C. Craig
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia
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Miskulin DC, Weiner DE. Blood Pressure Management in Hemodialysis Patients: What We Know And What Questions Remain. Semin Dial 2017; 30:203-212. [DOI: 10.1111/sdi.12586] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dana C. Miskulin
- Department of Medicine; Tufts University School of Medicine; Boston Massachusetts
| | - Daniel E. Weiner
- Department of Medicine; Tufts University School of Medicine; Boston Massachusetts
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Assimon MM, Wenger JB, Wang L, Flythe JE. Ultrafiltration Rate and Mortality in Maintenance Hemodialysis Patients. Am J Kidney Dis 2016; 68:911-922. [PMID: 27575009 DOI: 10.1053/j.ajkd.2016.06.020] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/14/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Observational data have demonstrated an association between higher ultrafiltration rates and greater mortality among hemodialysis patients. Prior studies were small and did not consider potential differences in the association across body sizes and other related subgroups. No study has investigated ultrafiltration rates normalized to anthropometric measures beyond body weight. Also, potential methodological shortcomings in prior studies have led to questions about the veracity of the ultrafiltration rate-mortality association. STUDY DESIGN Retrospective cohort. SETTING & PARTICIPANTS 118,394 hemodialysis patients dialyzing in a large dialysis organization, 2008 to 2012. PREDICTORS Mean 30-day ultrafiltration rates were dichotomized at 13 and 10mL/h/kg, separately and categorized using various cutoff points. Ultrafiltration rates normalized to body weight, body mass index, and body surface area were investigated. OUTCOMES All-cause mortality. MEASUREMENTS Multivariable survival models were used to estimate the association between ultrafiltration rate and all-cause mortality. RESULTS At baseline, 21,735 (18.4%) individuals had ultrafiltration rates > 13mL/h/kg and 48,529 (41.0%) had ultrafiltration rates > 10mL/h/kg. Median follow-up was 2.3 years, and the mortality rate was 15.3 deaths/100 patient-years. Compared with ultrafiltration rates ≤ 13mL/h/kg, ultrafiltration rates > 13mL/h/kg were associated with greater mortality (adjusted HR, 1.31; 95% CI, 1.28-1.34). Compared with ultrafiltration rates ≤ 10mL/h/kg, ultrafiltration rates > 10mL/h/kg were associated with greater mortality (adjusted HR, 1.22; 95% CI, 1.20-1.24). Findings were consistent across subgroups of sex, race, dialysis vintage, session duration, and body size. Higher ultrafiltration rates were associated with greater mortality when normalized to body weight, body mass index, and body surface area. LIMITATIONS Residual confounding cannot be excluded given the observational study design. CONCLUSIONS Regardless of the threshold implemented, higher ultrafiltration rate was associated with greater mortality in the overall study population and across key subgroups. Randomized controlled trials are needed to investigate whether ultrafiltration rate reduction improves clinical outcomes.
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Affiliation(s)
- Magdalene M Assimon
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC; Department of Epidemiology, UNC Gillings School of Global Public Health, Chapel Hill, NC
| | - Julia B Wenger
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC
| | - Lily Wang
- Department of Epidemiology, UNC Gillings School of Global Public Health, Chapel Hill, NC; Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC
| | - Jennifer E Flythe
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC; Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC.
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Flythe JE. Ultrafiltration Rate Clinical Performance Measures: Ready for Primetime? Semin Dial 2016; 29:425-434. [DOI: 10.1111/sdi.12529] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jennifer E. Flythe
- Department of Medicine; Division of Nephrology and Hypertension; UNC School of Medicine; University of North Carolina Kidney Center; Chapel Hill North Carolina
- The Cecil G. Sheps Center for Health Services Research; University of North Carolina; Chapel Hill North Carolina
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Rapid ultrafiltration rates and outcomes among hemodialysis patients: re-examining the evidence base. Curr Opin Nephrol Hypertens 2016; 24:525-30. [PMID: 26371525 DOI: 10.1097/mnh.0000000000000174] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE OF REVIEW This review critically summarizes the evidence linking ultrafiltration rates to adverse outcomes among hemodialysis patients and provides research recommendations to address knowledge gaps. RECENT FINDINGS Growing evidence suggests that fluid-related factors play important roles in hemodialysis patient outcomes. Ultrafiltration rate - the rate of fluid removal during hemodialysis - is one such factor. Existing observational data suggest a robust association between greater ultrafiltration rates and adverse cardiovascular outcomes, and such findings are supported by plausible physiologic rationale. Potential mechanistic pathways include ultrafiltration-related ischemia to the heart, brain, and gut, and volume overload-precipitated cardiac stress from reactive measures to ultrafiltration-induced hemodynamic instability. Inter-relationships among ultrafiltration rates and other fluid measures, such as interdialytic weight gain and chronic volume expansion, render the specific role of ultrafiltration rates in adverse outcomes difficult to study. Randomized trials must be conducted to confirm epidemiologic findings and examine the effect of ultrafiltration rate reduction on clinical and patient-centered outcomes. SUMMARY Compelling observational data demonstrate an association between more rapid ultrafiltration rates and adverse clinical outcomes. Before translating these findings into clinical practice, randomized trials are needed to verify observational data results and to identify effective strategies to mitigate ultrafiltration-related risk.
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Weiner DE, Lacson E. Fluid First or Not So Fast: Ultrafiltration Rate and the ESRD Quality Incentive Program. Clin J Am Soc Nephrol 2016; 11:1330-1332. [PMID: 27335125 PMCID: PMC4974881 DOI: 10.2215/cjn.05840616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Daniel E Weiner
- Department of Medicine, Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
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Flythe JE, Assimon MM, Wenger JB, Wang L. Ultrafiltration Rates and the Quality Incentive Program: Proposed Measure Definitions and Their Potential Dialysis Facility Implications. Clin J Am Soc Nephrol 2016; 11:1422-1433. [PMID: 27335126 PMCID: PMC4974895 DOI: 10.2215/cjn.13441215] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 04/04/2016] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND OBJECTIVES Rapid ultrafiltration rates are associated with adverse outcomes among patients on hemodialysis. The Centers for Medicare and Medicaid Services is considering an ultrafiltration rate quality measure for the ESRD Quality Incentive Program. Two measure developers proposed ultrafiltration rate measures with different selection criteria and specifications. We aimed to compare the proposed ultrafiltration rate measures and quantify dialysis facility operational burden if treatment times were extended to lower ultrafiltration rates. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Data were taken from the 2012 database of a large dialysis organization. Analyses of the Centers for Medicare and Medicaid Services measure considered 148,950 patients on hemodialysis, and analyses of the Kidney Care Quality Alliance measure considered 151,937 patients. We described monthly patient and facility ultrafiltration rates and examined differences in patient characteristics across ultrafiltration rate thresholds and differences in facilities across ultrafiltration rate measure scores. We computed the additional treatment time required to lower ultrafiltration rates <13 ml/h per kilogram. RESULTS Ultrafiltration rates peaked in winter and nadired in summer. Patients with higher ultrafiltration rates were younger; more likely to be women, nonblack, Hispanic, and lighter in weight; and more likely to have histories of heart failure compared with patients with lower ultrafiltration rates. Facilities had, on average, 20.8%±10.3% (July) to 22.8%±10.6% (February) of patients with ultrafiltration rates >13 ml/h per kilogram by the Centers for Medicare and Medicaid Services monthly measure. Facilities had, on average, 15.8%±8.2% of patients with ultrafiltration rates ≥13 ml/h per kilogram by the Kidney Care Quality Alliance annual measure. Larger facilities (>100 patients) would require, on average, 33 additional treatment hours per week to lower all facility ultrafiltration rates <13 ml/h per kilogram when total treatment time is capped at 4 hours. CONCLUSIONS Ultrafiltration rates vary seasonally and across clinical subgroups. Extension of treatment time as a strategy to lower ultrafiltration rates may pose facility operational challenges. Prospective studies of ultrafiltration rate threshold implementation are needed.
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Affiliation(s)
- Jennifer E. Flythe
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina
- Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, North Carolina; and
| | - Magdalene M. Assimon
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina
| | - Julia B. Wenger
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Lily Wang
- Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, North Carolina; and
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina
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Kramer H, Yee J, Weiner DE, Bansal V, Choi MJ, Brereton L, Berns JS, Samaniego-Picota M, Scheel P, Rocco M. Ultrafiltration Rate Thresholds in Maintenance Hemodialysis: An NKF-KDOQI Controversies Report. Am J Kidney Dis 2016; 68:522-532. [PMID: 27449697 DOI: 10.1053/j.ajkd.2016.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 06/02/2016] [Indexed: 11/11/2022]
Abstract
High hemodialysis ultrafiltration rate (UFR) is increasingly recognized as an important and modifiable risk factor for mortality among patients receiving maintenance hemodialysis. Recently, the Kidney Care Quality Alliance (KCQA) developed a UFR measure to assess dialysis unit care quality. The UFR measure was defined as UFR≥13mL/kg/h for patients with dialysis session length less than 240 minutes and was endorsed by the National Quality Forum as a quality measure in December 2015. Despite this, implementation of a UFR threshold remains controversial. In this NKF-KDOQI (National Kidney Foundation-Kidney Disease Outcomes Quality Initiative) Controversies Report, we discuss the concept of the UFR, which is governed by patients' interdialytic weight gain, body weight, and dialysis treatment time. We also examine the potential benefits and pitfalls of adopting a UFR threshold as a clinical performance measure and outline several aspects of UFR thresholds that require further research.
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Affiliation(s)
- Holly Kramer
- Division of Nephrology, Department of Medicine, Loyola University Chicago, Maywood, IL; Department of Public Health Sciences, Loyola University Chicago, Maywood, IL.
| | - Jerry Yee
- Division of Nephrology, Department of Medicine, Henry Ford Medical Center, Detroit, MI
| | - Daniel E Weiner
- Division of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA
| | - Vinod Bansal
- Division of Nephrology, Department of Medicine, Loyola University Chicago, Maywood, IL
| | - Michael J Choi
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | | | - Jeffrey S Berns
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | | | - Paul Scheel
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Michael Rocco
- Division of Nephrology, Department of Medicine, Wake Forest University, Winston-Salem, NC
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Assimon MM, Flythe JE. Intradialytic Blood Pressure Abnormalities: The Highs, The Lows and All That Lies Between. Am J Nephrol 2015; 42:337-50. [PMID: 26584275 PMCID: PMC4761237 DOI: 10.1159/000441982] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Frequent blood pressure (BP) measurements are necessary to ensure patient safety during hemodialysis treatments. Intradialytic BPs are not optimal tools for hypertension diagnosis and cardiovascular risk stratification, but they do have critical clinical and prognostic significance. We present evidence associating intradialytic BP phenomena including fall, rise and variability with adverse clinical outcomes and review related pathophysiologic mechanisms and potential management strategies. SUMMARY Observational studies demonstrate associations between intradialytic hypotension, hypertension and BP variability and mortality. Lack of consensus regarding diagnostic criteria has hampered data synthesis, and prospective studies investigating optimal management strategies for BP phenomena are lacking. Mechanistic data suggest that cardiac, gut, kidney and brain ischemia may lie on the causal pathway between intradialytic hypotension and mortality, and endothelial cell dysfunction, among other factors, may be an important mediator of intradialytic hypertension and adverse outcomes. These plausible pathophysiologic links present potential therapeutic targets for future inquiry. The phenomenon of intradialytic BP variability has not been adequately studied, and practical clinical measures and treatment strategies are lacking. KEY MESSAGES Intradialytic BP phenomena have important prognostic bearing. Clinical practice guidelines for both intradialytic hypotension and hypertension exist, but their underlying evidence is weak overall. Further research is needed to develop consensus diagnostic criteria for intradialytic hypotension, hypertension and BP variability and to elucidate optimal treatment and prevention strategies for each BP manifestation.
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Affiliation(s)
- Magdalene M. Assimon
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC
- Department of Epidemiology, UNC Gillings School of Global Public Health, Chapel Hill, NC
| | - Jennifer E. Flythe
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, NC
- Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC
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Flythe JE, Powell JD, Poulton CJ, Westreich KD, Handler L, Reeve BB, Carey TS. Patient-Reported Outcome Instruments for Physical Symptoms Among Patients Receiving Maintenance Dialysis: A Systematic Review. Am J Kidney Dis 2015. [PMID: 26210069 DOI: 10.1053/j.ajkd.2015.05.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Patients with end-stage renal disease (ESRD) receiving dialysis have poor health-related quality of life. Physical symptoms are highly prevalent among dialysis-dependent patients and play important roles in health-related quality of life. A range of symptom assessment tools have been used in dialysis-dependent patients, but there has been no previous systematic assessment of the existing symptom measures' content, validity, and reliability. STUDY DESIGN Systematic review of the literature. SETTINGS & POPULATION Patients with ESRD on maintenance dialysis therapy. SELECTION CRITERIA FOR STUDIES Instruments with 3 or more physical symptoms previously used in dialysis-dependent patients and evidence of validity or reliability testing. INTERVENTION Patient-reported physical symptom assessment instrument. OUTCOMES Instrument symptom-related content, validity, and reliability. RESULTS From 3,148 screened abstracts, 89 full-text articles were eligible for review. After article exclusion and further article identification by reference reviews, 58 articles on 23 symptom assessment instruments with documented reliability or validity testing were identified. Of the assessment instruments, 43.5% were generic and 56.5% were ESRD specific. Symptoms most frequently assessed were fatigue, shortness of breath, insomnia, nausea and vomiting, and appetite. Instruments varied widely in respondent time burden, recall period, and symptom attributes. Few instruments considered recall periods less than 2 weeks and few assessed a range of symptom attributes. Psychometric testing was completed for congruent validity (70%), known-group validity (25%), responsiveness (30%), internal consistency (78%), and test-retest reliability (65%). Content validity was assessed in dialysis populations in 57% of the 23 instruments. LIMITATIONS Consideration of physical symptoms only and exclusion of single symptom-focused instruments. CONCLUSIONS The number of available instruments focused exclusively on physical symptoms in dialysis patients is limited. Few symptom-containing instruments have short recall periods, assess diverse symptom attributes, and have undergone comprehensive psychometric testing. Improved symptom-focused assessment tools are needed to improve symptom evaluation and symptom responsiveness to intervention among dialysis-dependent patients.
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Affiliation(s)
- Jennifer E Flythe
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC; The Cecil G. Sheps Center for Health Services Research, Chapel Hill, NC.
| | - Jill D Powell
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Caroline J Poulton
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Katherine D Westreich
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Lara Handler
- Health Sciences Library, University of North Carolina, Chapel Hill, NC
| | - Bryce B Reeve
- The Cecil G. Sheps Center for Health Services Research, Chapel Hill, NC; Department of Health Policy and Management, University of North Carolina Gillings School of Global Public Health, Chapel Hill, NC
| | - Timothy S Carey
- The Cecil G. Sheps Center for Health Services Research, Chapel Hill, NC; Division of General Internal Medicine and Clinical Epidemiology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC
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Sherman RA. Briefly Noted. Semin Dial 2015. [DOI: 10.1111/sdi.12321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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