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Fernandes MIDCD, Tinôco JDDS, Fernandes RM, Silva JBD, Almeida ATD, Frazão CMFDQ, Lopes MVDO, Lira ALBDC. Predictors of excess fluid volume in hemodialysis patients: an observational study. Rev Bras Enferm 2024; 77:e20220816. [PMID: 38716904 PMCID: PMC11067934 DOI: 10.1590/0034-7167-2022-0816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 11/25/2023] [Indexed: 05/12/2024] Open
Abstract
OBJECTIVES to assess risk factors for excess fluid volume in hemodialysis patients. METHODS a retrospective case-control study was conducted. A total of 392 patients (196 cases and 196 controls) from two hemodialysis centers were included. Sociodemographic data and 23 risk factors for excess fluid volume were assessed using a data collection form. Data were analyzed using a multivariate logistic regression model. RESULTS the insufficient knowledge (OR=2.06), excessive fluid intake (OR=2.33), inadequate fluid removal during hemodialysis (OR=2.62) and excessive sodium intake (OR=1.91) risk factors may increase the chance of occurrence of excess fluid volume in hemodialysis patients by approximately two times. Education level (OR=0.95) and age (OR=0.97) are protective factors for excessive fluid volume. CONCLUSIONS knowing these risk factors may help nurses with accurate and rapid diagnostic inference of the risk of excessive fluid volume.
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Mayne KJ, Staplin N, Keane DF, Wanner C, Brenner S, Cejka V, Stegbauer J, Judge PK, Preiss D, Emberson J, Trinca D, Dayanandan R, Lee R, Nolan J, Omata A, Green JB, Cherney DZ, Hooi LS, Pontremoli R, Tuttle KR, Lees JS, Mark PB, Davies SJ, Hauske SJ, Steubl D, Brückmann M, Landray MJ, Baigent C, Haynes R, Herrington WG. Effects of Empagliflozin on Fluid Overload, Weight, and Blood Pressure in CKD. J Am Soc Nephrol 2024; 35:202-215. [PMID: 38082486 PMCID: PMC7615589 DOI: 10.1681/asn.0000000000000271] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/26/2023] [Indexed: 02/03/2024] Open
Abstract
SIGNIFICANCE STATEMENT SGLT2 inhibitors reduce risk of kidney progression, AKI, and cardiovascular disease, but the mechanisms of benefit are incompletely understood. Bioimpedance spectroscopy can estimate body water and fat mass. One quarter of the EMPA-KIDNEY bioimpedance substudy CKD population had clinically significant levels of bioimpedance-derived "Fluid Overload" at recruitment. Empagliflozin induced a prompt and sustained reduction in "Fluid Overload," irrespective of sex, diabetes, and baseline N-terminal pro B-type natriuretic peptide or eGFR. No significant effect on bioimpedance-derived fat mass was observed. The effects of SGLT2 inhibitors on body water may be one of the contributing mechanisms by which they mediate effects on cardiovascular risk. BACKGROUND CKD is associated with fluid excess that can be estimated by bioimpedance spectroscopy. We aimed to assess effects of sodium glucose co-transporter 2 inhibition on bioimpedance-derived "Fluid Overload" and adiposity in a CKD population. METHODS EMPA-KIDNEY was a double-blind placebo-controlled trial of empagliflozin 10 mg once daily in patients with CKD at risk of progression. In a substudy, bioimpedance measurements were added to the main trial procedures at randomization and at 2- and 18-month follow-up visits. The substudy's primary outcome was the study-average difference in absolute "Fluid Overload" (an estimate of excess extracellular water) analyzed using a mixed model repeated measures approach. RESULTS The 660 substudy participants were broadly representative of the 6609-participant trial population. Substudy mean baseline absolute "Fluid Overload" was 0.4±1.7 L. Compared with placebo, the overall mean absolute "Fluid Overload" difference among those allocated empagliflozin was -0.24 L (95% confidence interval [CI], -0.38 to -0.11), with similar sized differences at 2 and 18 months, and in prespecified subgroups. Total body water differences comprised between-group differences in extracellular water of -0.49 L (95% CI, -0.69 to -0.30, including the -0.24 L "Fluid Overload" difference) and a -0.30 L (95% CI, -0.57 to -0.03) difference in intracellular water. There was no significant effect of empagliflozin on bioimpedance-derived adipose tissue mass (-0.28 kg [95% CI, -1.41 to 0.85]). The between-group difference in weight was -0.7 kg (95% CI, -1.3 to -0.1). CONCLUSIONS In a broad range of patients with CKD, empagliflozin resulted in a sustained reduction in a bioimpedance-derived estimate of fluid overload, with no statistically significant effect on fat mass. TRIAL REGISTRATION Clinicaltrials.gov: NCT03594110 ; EuDRACT: 2017-002971-24 ( https://eudract.ema.europa.eu/ ).
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Affiliation(s)
- Kaitlin J. Mayne
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
- School of Cardiovascular and Metabolic Health, College of Medical and Veterinary Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Natalie Staplin
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - David F. Keane
- CÚRAM SFI Research Centre for Medical Devices, HRB-Clinical Research Facility Galway, National University of Ireland Galway, Galway, Ireland
| | - Christoph Wanner
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | | | | | - Johannes Stegbauer
- Department of Nephrology, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
- CARID, Cardiovascular Research Institute Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Dusseldorf, Germany
| | - Parminder K. Judge
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
- Oxford Kidney Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - David Preiss
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Jonathan Emberson
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Daniele Trinca
- Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Rejive Dayanandan
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Ryonfa Lee
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - John Nolan
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Akiko Omata
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | | | | | - Lai Seong Hooi
- Department of Medicine and Haemodialysis Unit, Sultanah Aminah Hospital, Johor Bahru, Malaysia
| | - Roberto Pontremoli
- Università degli Studi and IRCCS Ospedale Policlinico San Martino di Genova, Genoa, Italy
| | - Katherine R. Tuttle
- Providence Inland Northwest Health, University of Washington, Spokane, Washington
| | - Jennifer S. Lees
- School of Cardiovascular and Metabolic Health, College of Medical and Veterinary Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Patrick B. Mark
- School of Cardiovascular and Metabolic Health, College of Medical and Veterinary Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Simon J. Davies
- School of Medicine, Keele University, Newcastle, United Kingdom
| | - Sibylle J. Hauske
- Boehringer Ingelheim International GmbH, Ingelheim upon Rhein, Germany
- The Fifth Department of Medicine, University Medical Center Mannheim, Mannheim, Germany
| | - Dominik Steubl
- Boehringer Ingelheim International GmbH, Ingelheim upon Rhein, Germany
- University of Heidelberg, Mannheim, Germany
- Department of Nephrology, Hospital Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Martina Brückmann
- Boehringer Ingelheim International GmbH, Ingelheim upon Rhein, Germany
- The First Department of Medicine, University Medical Center Mannheim, Mannheim, Germany
| | - Martin J. Landray
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Colin Baigent
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Richard Haynes
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
- Oxford Kidney Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - William G. Herrington
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
- Oxford Kidney Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
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Stigger K, Ribeiro LR, Cordeiro FM, Böhlke M. Incidence of hospital admissions in bioimpedance-guided fluid management among maintenance hemodialysis patients-Results of a randomized controlled trial. Hemodial Int 2023. [PMID: 37067785 DOI: 10.1111/hdi.13076] [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: 09/10/2022] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 04/18/2023]
Abstract
INTRODUCTION Hemodialysis is life-sustaining in kidney failure. However, proper regulation of body fluids depends on an accurate estimate of target weight. This trial aims to compare clinical endpoints between target weight estimation guided by bioimpedance spectroscopy and usual care in hemodialysis patients. METHODS This is an open-label, parallel-group, controlled trial that randomized, through a table of random numbers, adult patients on maintenance hemodialysis to target weight estimation based on monthly clinical evaluation alone or added to evaluation by bioimpedance twice a year. The primary outcome was survival, and the secondary outcomes were the rate of hospital admissions, change in blood pressure (BP), and antihypertensive drugs load. Participants were followed for 2 years. Survival analysis was performed using Kaplan-Meier estimator and Log-rank test, and hospital admissions were analyzed by the incidence-rate ratio. FINDINGS One hundred and ten patients were randomized to the usual care (52) or bioimpedance (58) groups, with a mean age of 57.4 (15.4) years, 64 (58%) males. There was no difference between the groups at baseline. Survival was not significantly different between groups (log-rank test p = 0.68), but the trial was underpowered for this outcome. There was also no difference between the groups in the change in systolic or diastolic BP or in the number of antihypertensive drugs being used. The incidence rate of hospital admissions was 3.1 and 2.1 per person-year in usual care and bioimpedance groups, respectively, with a time-adjusted incidence rate ratio of 1.48 (95% CI: 1.20-1.82, p = 0.0001) and attributable fraction of risk among exposed individuals of 0.32 (95% CI: 0.17-0.45). DISCUSSION The inclusion of bioimpedance data to guide the estimation of target weight in hemodialysis patients had no detectable impact on survival or BP control, but significantly reduced the incidence rate of hospital admissions. The study was registered at ClinicalTrials.gov Identifier: NCT05272800.
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Affiliation(s)
- Kaiane Stigger
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas, Pelotas, Brazil
| | - Larissa Ribas Ribeiro
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas, Pelotas, Brazil
- Dialysis and Transplantation Unit, University Hospital São Francisco de Paula, Universidade Católica de Pelotas, Pelotas, Brazil
| | - Fernanda Moraez Cordeiro
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas, Pelotas, Brazil
- Dialysis and Transplantation Unit, University Hospital São Francisco de Paula, Universidade Católica de Pelotas, Pelotas, Brazil
| | - Maristela Böhlke
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas, Pelotas, Brazil
- Dialysis and Transplantation Unit, University Hospital São Francisco de Paula, Universidade Católica de Pelotas, Pelotas, Brazil
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Zhou C, Lin X, Ma G, Yuan J, Zha Y. Increased Predialysis Extracellular to Intracellular Water Ratio Is Associated With Sarcopenia in Hemodialysis Patients. J Ren Nutr 2023; 33:157-164. [PMID: 35381328 DOI: 10.1053/j.jrn.2022.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/14/2021] [Accepted: 03/03/2022] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE To explore the association between fluid overload, evaluated by a new fluid overload indicator, the bioelectrical impedance analysis-derived whole-body extracellular to intracellular water ratio (ECW/ICW), and sarcopenia in maintenance hemodialysis (MHD) patients. METHODS A multicenter, cross-sectional study that included 3320 adult MHD patients was conducted in 20 hemodialysis centers of Guizhou Province, Southwest China from June 1, 2020, to September 30, 2020. The diagnosis of sarcopenia was based on the Asian Working Group's definition of sarcopenia. Multiple logistic regression models, stratified analyses, and interactive analyses were conducted. RESULTS A total of 3196 participants were included in the final analysis. The prevalence of sarcopenia was 36.2% in the total population. The prevalence of sarcopenia was increased with increasing quartiles of ECW/ICW (18.1%, 33.3%, 37.8%, and 55.4% for the first, second, third, and fourth quartiles, respectively). Increased ECW/ICW was significantly associated with sarcopenia. The association remained statistically significant even after adjusting for age, sex, body mass index (BMI), dialysis vintage, C-reactive protein, and various medical histories. The odds ratios were 2.11 (1.41, 3.14), 1.83 (1.22, 2.76), and 3.45 (2.21, 5.39) for ECW/ICW quartiles 2-4, respectively (P for trend <.001). The interaction analysis showed that history of diabetes had an interactive role in the association between ECW/ICW and sarcopenia (P for interaction = .034). The association stably existed across subgroups and was more prominent in older patients and those with higher BMI and a history of diabetes. CONCLUSIONS Elevated ECW/ICW was associated with increased sarcopenia risk independent of BMI, prealbumin, C-reactive protein, and other potential confounders in MHD patients. The association was more prominent in older patients and those with higher BMI and a history of diabetes, suggesting that controlling volume balance may help to reduce the occurrence of sarcopenia in these populations.
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Affiliation(s)
- Chaomin Zhou
- Renal Division, Department of Medicine, Guizhou Provincial People' s Hospital, Guizhou Provincial Institute of Nephritic and Urinary Disease, Guiyang, Guizhou, China.
| | - Xin Lin
- Renal Division, Department of Medicine, Guizhou Provincial People' s Hospital, Guizhou Provincial Institute of Nephritic and Urinary Disease, Guiyang, Guizhou, China
| | - Guoying Ma
- Renal Division, Department of Medicine, Qian dongnan People's Hospital, Qian Dongnan, Guizhou, China
| | - Jing Yuan
- Renal Division, Department of Medicine, Guizhou Provincial People' s Hospital, Guizhou Provincial Institute of Nephritic and Urinary Disease, Guiyang, Guizhou, China
| | - Yan Zha
- Renal Division, Department of Medicine, Guizhou Provincial People' s Hospital, Guizhou Provincial Institute of Nephritic and Urinary Disease, Guiyang, Guizhou, China.
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5
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Cheng L, Chang L, Tian R, Zhou J, Luo F, Zhang H. The predictive value of bioimpedance-derived fluid parameters for cardiovascular events in patients undergoing hemodialysis. Ren Fail 2022; 44:1192-1200. [PMID: 35856161 PMCID: PMC9318232 DOI: 10.1080/0886022x.2022.2095287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background It is becoming increasingly evident that the accurate assessment of fluid
status is critical to ensure optimal care in patients undergoing
hemodialysis (HD). Various fluid parameters, including
overhydration (OH) and overhydration/extracellular water
(OH/ECW%), which can be obtained using a
bioimpedance spectroscopy device have been used to indicate the hydration
status in such patients. This study aimed to explore the effect of these
fluid parameters on cardiovascular events and determine which parameter was
a better predictor of cardiovascular events (CVEs). Methods A total of 227 patients who underwent HD at the Hangzhou Hospital of
Traditional Chinese Medicine were enrolled in this prospective study between
December 2017 and August 2018. Clinical data were collected, and the fluid
status of patients was assessed using a body composition monitor. The
patients were followed up until December 2020. The primary outcomes were
CVEs. The association between fluid parameters and CVEs was analyzed using
Cox proportional hazards models. The areas under the curve
(AUCs) of receiver operating characteristic analysis and
improvement in the global chi-squared value were used to compare the
predictive values of fluid parameters for CVEs. Results During a median follow-up of 31 months, 66 CVEs were recorded. The
patients with a higher absolute hydration index (OH) and a
relative hydration index (OH/ECW%) exhibited an
increased risk of developing CVEs. After adjusting for confounding factors,
both OH [hazard ratio (HR) 1.279 per L, 95%
confidence interval (CI) 1.047–1.562;
p = 0.016] and OH/ECW%
(HR 1.061 per %, 95% CI 1.017–1.108;
p = 0.006) were
independently associated with CVEs. The predictive ability of the absolute
hydration index was superior to the relative hydration index based on AUC
calculations for CVEs. Furthermore, a greater change in
χ2 in predicting CVEs was noted
for the absolute hydration index. Conclusions Both absolute hydration index and relative hydration index were found to be
independent predictors of CVEs in univariate and multivariate analyses.
Furthermore, the absolute hydration index had a better additive predictive
value than the relative hydration index in predicting CVEs.
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Affiliation(s)
- Linghong Cheng
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Liyang Chang
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Rongrong Tian
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Jianfang Zhou
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Fenxia Luo
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Hongmei Zhang
- Department of Nephrology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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Mayne KJ, Shemilt R, Keane DF, Lees JS, Mark PB, Herrington WG. Bioimpedance Indices of Fluid Overload and Cardiorenal Outcomes in Heart Failure and Chronic Kidney Disease: a Systematic Review. J Card Fail 2022; 28:1628-1641. [PMID: 36038013 PMCID: PMC7613800 DOI: 10.1016/j.cardfail.2022.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/23/2022] [Accepted: 08/04/2022] [Indexed: 01/19/2023]
Abstract
BACKGROUND Bioimpedance-based estimates of fluid overload have been widely studied and systematically reviewed in populations of those undergoing dialysis, but data from populations with heart failure or nondialysis chronic kidney disease (CKD) have not. METHODS AND RESULTS We conducted a systematic review of studies using whole-body bioimpedance from populations with heart failure and nondialysis CKD that reported associations with mortality, cardiovascular outcomes and/or CKD progression. We searched MEDLINE, Embase databases and the Cochrane CENTRAL registry from inception to March 14, 2022. We identified 31 eligible studies: 20 heart failure and 11 CKD cohorts, with 2 studies including over 1000 participants. A wide range of various bioimpedance methods were used across the studies (heart failure: 8 parameters; CKD: 6). Studies generally reported positive associations, but between-study differences in bioimpedance methods, fluid overload exposure definitions and modeling approaches precluded meta-analysis. The largest identified study was in nondialysis CKD (Chronic Renal Insufficiency Cohort, 3751 participants), which reported adjusted hazard ratios (95% confidence intervals) for phase angle < 5.59 vs ≥ 6.4 of 2.02 (1.67-2.43) for all-cause mortality; 1.80 (1.46-2.23) for heart failure events; and 1.78 (1.56-2.04) for CKD progression. CONCLUSIONS Bioimpedance indices of fluid overload are associated with risk of important cardiorenal outcomes in heart failure and CKD. Facilitation of more widespread use of bioimpedance requires consensus on the optimum device, standardized analytical methods and larger studies, including more detailed characterization of cardiac and renal phenotypes.
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Affiliation(s)
- Kaitlin J Mayne
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK; Institute of Cardiovascular & Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK.
| | - Richard Shemilt
- Institute of Cardiovascular & Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
| | - David F Keane
- CÚRAM SFI Research Centre for Medical Devices, HRB-Clinical Research Facility Galway, National University of Ireland Galway, Galway, Ireland
| | - Jennifer S Lees
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK; Institute of Cardiovascular & Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
| | - Patrick B Mark
- Institute of Cardiovascular & Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
| | - William G Herrington
- Medical Research Council Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
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Sandys V, Sexton D, O'Seaghdha C. Artificial intelligence and digital health for volume maintenance in hemodialysis patients. Hemodial Int 2022; 26:480-495. [PMID: 35739632 PMCID: PMC9796027 DOI: 10.1111/hdi.13033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 05/18/2022] [Accepted: 05/30/2022] [Indexed: 12/30/2022]
Abstract
Chronic fluid overload is associated with morbidity and mortality in hemodialysis patients. Optimizing the diagnosis and treatment of fluid overload remains a priority for the nephrology community. Although current methods of assessing fluid status, such as bioimpedance and lung ultrasound, have prognostic and diagnostic value, no single system or technique can be used to maintain euvolemia. The difficulty in maintaining and assessing fluid status led to a publication by the Kidney Health Initiative in 2019 aimed at fostering innovation in fluid management therapies. This review article focuses on the current limitations in our assessment of extracellular volume, and the novel technology and methods that can create a new paradigm for fluid management. The cardiology community has published research on multiparametric wearable devices that can create individualized predictions for heart failure events. In the future, similar wearable technology may be capable of tracking fluid changes during the interdialytic period and enabling behavioral change. Machine learning methods have shown promise in the prediction of volume-related adverse events. Similar methods can be leveraged to create accurate, automated predictions of dry weight that can potentially be used to guide ultrafiltration targets and interdialytic weight gain goals.
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Affiliation(s)
- Vicki Sandys
- Royal College of Surgeons in IrelandDublinIreland
| | - Donal Sexton
- St James's HospitalDublin 8Ireland
- Trinity Health Kidney CentreSchool of Medicine, Trinity College DublinDublinIreland
- ADAPT: Research Centre for AI‐Driven Digital Content TechnologyIreland
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Sandys V, Edwards C, McAleese P, O'Hare E, O'Seaghdha C. Protocol of a pilot-scale, single-arm, observational study to assess the utility and acceptability of a wearable hydration monitor in haemodialysis patients. Pilot Feasibility Stud 2022; 8:17. [PMID: 35073985 PMCID: PMC8785447 DOI: 10.1186/s40814-022-00976-7] [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: 05/18/2021] [Accepted: 01/11/2022] [Indexed: 11/10/2022] Open
Abstract
Background Fluid overload has a high prevalence in haemodialysis patients and is an important risk factor for excess mortality and hospitalisations. Despite the risks associated with chronic fluid overload, it is clinically difficult to assess and maintain fluid status adequately. Current methods of fluid status assessment are either imprecise or time intensive. In particular, to date, no method exists to accurately assess fluid status during the interdialytic interval. Objectives This pilot study aimed to evaluate whether a prototype wearable hydration monitor can accurately and reproducibly detect fluid overload in the haemodialysis population when compared to haemodialysis and bioimpedance data. Methods A prospective, open-label, single-arm observational trial of 20 patients commenced in January 2021 in a single haemodialysis centre in Ireland, with a wearable hydration monitor, the Sixty device. The Sixty device uses diffuse reflectance spectroscopy to measure fluid levels at the level of the subdermis and uses machine learning to develop an algorithm that can determine fluid status. The Sixty device was worn at every dialysis session and nocturnally over a three-week observational period. Haemodialysis parameters including interdialytic weight gain, ultrafiltration volume, blood pressure, and relative blood volume were collected from each session, and bioimpedance measurements using the Fresenius body composition monitor were performed on 4 occasions as a comparator. The primary objective of this trial was to determine the accuracy and reproducibility of the Sixty device compared to bioimpedance measurements. Conclusion If the accuracy of the wearable hydration monitor is validated, further studies will be conducted to integrate the device output into a multi-parameter machine learning algorithm that can provide patients with actionable insights to manage fluid overload in the interdialytic period. Trial registration www.clinicaltrials.govNCT04623281. Registered November 10th, 2020.
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Affiliation(s)
- Vicki Sandys
- Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - Colin Edwards
- patientMpower Ltd., 21 Denzille Lane, Dublin, D02 EY19, Ireland
| | - Paul McAleese
- Design to Value Ltd., Innishannon, Co., Cork, Ireland
| | - Emer O'Hare
- Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
| | - Conall O'Seaghdha
- Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
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Moissl U, Fuentes LR, Hakim MI, Hassler M, Kothari DA, Rosales L, Zhu F, Raimann JG, Thijssen S, Kotanko P. Prevalence of fluid overload in an urban US hemodialysis population: A cross-sectional study. Hemodial Int 2021; 26:264-273. [PMID: 34897937 DOI: 10.1111/hdi.12986] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/25/2021] [Accepted: 11/30/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Inadequate fluid status remains a key driver of cardiovascular morbidity and mortality in chronic hemodialysis (HD) patients. Quantification of fluid overload (FO) using bioimpedance spectroscopy (BIS) has become standard in many countries. To date, no BIS device has been approved in the United States for fluid status assessment in kidney patients. Therefore, no previous quantification of fluid status in US kidney patients using BIS has been reported. Our aim was to conduct a cross-sectional BIS-based assessment of fluid status in an urban US HD population. METHODS We determined fluid status in chronic HD patients using whole body BIS (Body Composition Monitor, BCM). The BCM reports FO in liters; negative FO denotes fluid depletion. Measurements were performed before dialysis. Post-HD FO was estimated by subtracting the intradialytic weight loss from the pre-HD FO. FINDINGS We studied 170 urban HD patients (age 61 ± 14 years, 60% male). Pre- and post-HD FO (mean ± SD), were 2.2 ± 2.4 and -0.2 ± 2.7 L, respectively. Pre-HD, 43% of patients were fluid overloaded, 53% normally hydrated, and 4% fluid depleted. Post-HD, 12% were fluid overloaded, 55% normohydrated and 32% fluid depleted. Only 48% of fluid overloaded patients were hypertensive, while 38% were normotensive and 14% hypotensive. Fluid status did not differ significantly between African Americans (N = 90) and Caucasians (N = 61). DISCUSSION While about half of the patients had normal fluid status pre-HD, a considerable proportion of patients was either fluid overloaded or depleted, indicating the need for tools to objectively quantify fluid status.
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Affiliation(s)
- Ulrich Moissl
- Fresenius Medical Care Deutschland GmbH, Bad Homburg, Hessen, Germany
| | | | | | - Manuel Hassler
- Fresenius Medical Care Deutschland GmbH, Bad Homburg, Hessen, Germany
| | | | | | - Fansan Zhu
- Renal Research Institute, New York, New York, USA
| | | | | | - Peter Kotanko
- Renal Research Institute, New York, New York, USA.,Icahn School of Medicine at Mount Sinai, New Nork, New York, USA
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Covic A, Siriopol D. Assessment and Management of Volume Overload Among Patients on Chronic Dialysis. Curr Vasc Pharmacol 2021; 19:34-40. [PMID: 32096744 DOI: 10.2174/1570161118666200225093827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 12/11/2022]
Abstract
Volume overload is the most common complication in end-stage renal disease (ESRD) patients, being directly related to numerous complications including resistant hypertension, cardiac hypertrophy, congestive heart failure or arterial stiffness, among others. Therefore, volume overload is now considered an important risk factor for hard outcomes, like all-cause or cardiovascular mortality. Relying solely on clinical examination for assessing volume overload in ESRD patients lacks sensitivity and specificity. Numerous efforts have been made to identify new methods that could objectively assess volume status; however, each of them has important limitations. This review aims to discuss the most frequently used methods (biomarkers, inferior vena cava assessment, lung ultrasonography, bioimpedance analysis and blood volume monitoring) and to compare the advantage of each method vs. the overall/ clinical strategy.
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Affiliation(s)
- Adrian Covic
- Nephrology Department, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, Iasi 700115, Romania
| | - Dimitrie Siriopol
- Nephrology Department, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, Iasi 700115, Romania
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Siriopol D, Popa R, Mihaila M, Rusu F, Sascau R, Statescu C, Cătălina Z, Vasiliu V, Bucur A, Neamtu A, Siriopol I, Cianga P, Kanbay M, Covic A. Application of survival classification and regression tree analysis for identification of subgroups of risk in patients with heart failure and reduced left ventricular ejection fraction. Int J Cardiovasc Imaging 2021; 37:1853-1861. [DOI: 10.1007/s10554-021-02159-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 01/04/2021] [Indexed: 01/08/2023]
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Pinter J, Chazot C, Stuard S, Moissl U, Canaud B. Sodium, volume and pressure control in haemodialysis patients for improved cardiovascular outcomes. Nephrol Dial Transplant 2020; 35:ii23-ii30. [PMID: 32162668 PMCID: PMC7066545 DOI: 10.1093/ndt/gfaa017] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic volume overload is pervasive in patients on chronic haemodialysis and substantially increases the risk of cardiovascular death. The rediscovery of the three-compartment model in sodium metabolism revolutionizes our understanding of sodium (patho-)physiology and is an effect modifier that still needs to be understood in the context of hypertension and end-stage kidney disease. Assessment of fluid overload in haemodialysis patients is central yet difficult to achieve, because traditional clinical signs of volume overload lack sensitivity and specificity. The highest all-cause mortality risk may be found in haemodialysis patients presenting with high fluid overload but low blood pressure before haemodialysis treatment. The second highest risk may be found in patients with both high blood pressure and fluid overload, while high blood pressure but normal fluid overload may only relate to moderate risk. Optimization of fluid overload in haemodialysis patients should be guided by combining the traditional clinical evaluation with objective measurements such as bioimpedance spectroscopy in assessing the risk of fluid overload. To overcome the tide of extracellular fluid, the concept of time-averaged fluid overload during the interdialytic period has been established and requires possible readjustment of a negative target post-dialysis weight. 23Na-magnetic resonance imaging studies will help to quantitate sodium accumulation and keep prescribed haemodialytic sodium mass balance on the radar. Cluster-randomization trials (e.g. on sodium removal) are underway to improve our therapeutic approach to cardioprotective haemodialysis management.
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Affiliation(s)
- Jule Pinter
- Renal Division, University Hospital of Würzburg, Würzburg, Germany
| | | | - Stefano Stuard
- Global Medical Office, FMC Deutschland, Bad Homburg, Germany
| | - Ulrich Moissl
- Global Medical Office, FMC Deutschland, Bad Homburg, Germany
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14
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Liu L, Sun Y, Chen Y, Xu J, Yuan P, Shen Y, Lin S, Sun W, Ma Y, Ren J, Liu W, Lei J, Zuo L. The effect of BCM guided dry weight assessment on short-term survival in Chinese hemodialysis patients : Primary results of a randomized trial - BOdy COmposition MOnitor (BOCOMO) study. BMC Nephrol 2020; 21:135. [PMID: 32295531 PMCID: PMC7161118 DOI: 10.1186/s12882-020-01793-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/05/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Lack of accurate and effective assessment tools of fluid status is one of the major challenges to reach proper dry weight (DW) in chronic hemodialysis (HD) population. The aim of this randomized study was to evaluate the effect of bioimpedance guided DW assessment on long-term outcomes in Chinese HD patients. Eligible patients were randomly assigned (1:1) to two groups in each center, the control group and body composition monitor (BCM) group. In the BCM group, DW has been evaluated by bioimpedance technic every 2 months during follow-up. The primary composite endpoint consisted of death, acute myocardial infarction, cerebral infarction, cerebral hemorrhage, and peripheral vascular disease. METHODS A total of 445 patients were recruited from 11 hemodialysis centers from Beijing, Tianjin and Shijiazhuang cities from Jan 1, 2013 to Dec 31, 2014. They were randomized into either BCM group or control group. All patients have been followed up for 1 year or until Dec 31, 2014 or censoring. RESULTS At baseline, there were no significant differences between two groups in terms of demographic parameters, dialysis vintage, percentage of vascular access, and comorbid conditions. At the end of the study, 18 (4.04%) patients had died (11 in control group and 7 in BCM group). Kaplan-Meier survival analysis showed no significant difference in survival rates between two groups (log-rank test P = 0.07). However, there was an increasing trend of survival rates in BCM group compared to the control group. In the multivariable Cox analysis, there was a nonsignificant trend toward less primary composite end points in the BCM group in the adjusted analysis, the hazard ratio was impressive (0.487, 95% CI 0.217-1.091, P = 0.08). CONCLUSION Bioimpedance technic has been applied to assess fluid status for decades and has been proved to be a promising tool for clinical practice. Although short-term outcomes were not improved in the randomized, controlled trial, the ascending trend in survival has been observed. Further studies are needed to investigate the survival benefit of bioimpedance method in DW assessment in a larger sample with longer follow-up period. TRIAL REGISTRATION ClinicalTrials.org, NCT01509937. Registered 13 January 2012.
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Affiliation(s)
- Li Liu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Yi Sun
- Department of Nephrology, Capital Medical University Fuxing Hospital, Beijing, China
| | - Yuqing Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Jinsheng Xu
- Department of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ping Yuan
- Nephrotic Blood Purification Center, Tianjin Third Central Hospital, Tianjin, China
| | - Yulan Shen
- Department of Nephrology, Beijing Miyun County Hospital, Beijing, China
| | - Shan Lin
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Weiming Sun
- Department of Nephrology, Beijing Shijitan Hospital, Beijing, China
| | - Yingchun Ma
- Department of Nephrology, Beijing Boai Hospital, China Rehabilitation Research Center, Captain Medical University, Rehabilitation Medical College, Beijing, China
| | - Jianwei Ren
- Department of Nephrology, Aviation General Hospital, Beijing, China
| | - Wenjun Liu
- Department of Nephrology, China Academy of Chinese Medical Sciences Guang'anmen Hospital, Beijing, China
| | - Jinghong Lei
- Department of Nephrology, Beijing Aerospace General Hospital, Beijing, China
| | - Li Zuo
- Department of Nephrology, Peking University People's Hospital, Beijing, China.
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Fluid overload after coronary artery bypass graft in patients on maintenance hemodialysis is associated with prolonged time on mechanical ventilation. BMC Anesthesiol 2020; 20:60. [PMID: 32143558 PMCID: PMC7060615 DOI: 10.1186/s12871-020-00971-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/27/2020] [Indexed: 01/19/2023] Open
Abstract
Background Fluid overload is a risk factor for morbidity, mortality, and prolonged ventilation time after surgery. Patients on maintenance hemodialysis might be at higher risk. We hypothesized that fluid accumulation would be directly associated with extended ventilation time in patients on hemodialysis, as compared to patients with chronic kidney disease not on dialysis (CKD3–4) and patients with normal renal function (reference group). Methods This is a prospective observational study that included patients submitted to isolated and elective coronary artery bypass surgery, divided in 3 groups according to time on mechanical ventilation: < 24 h, 24-48 h and > 48 h. The same observer followed patients daily from the surgery to the hospital discharge. Cumulative fluid balance was defined as the sum of daily fluid balance over the first 5 days following surgery. Results Patients requiring more than 48 h of ventilation (5.3%) had a lower estimated glomerular filtration rate, were more likely to be on maintenance dialysis, had longer anesthesia time, needed higher dobutamine and noradrenaline infusion following surgery, and had longer hospitalization stay. Multivariate analysis revealed that the fluid accumulation, scores of sequential organ failure assessment in the day following surgery, and the renal function (normal, chronic kidney disease not on dialysis and maintenance hemodialysis) were independently associated with time in mechanical ventilation. Among patients on hemodialysis, the time from the surgery to the first hemodialysis session also accounted for the time on mechanical ventilation. Conclusions Fluid accumulation is an important risk factor for lengthening mechanical ventilation, particularly in patients on hemodialysis. Future studies are warranted to address the ideal timing for initiating dialysis in this scenario in an attempt to reduce fluid accumulation and avoid prolonged ventilation time and hospital stay.
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van der Sande FM, van de Wal-Visscher ER, Stuard S, Moissl U, Kooman JP. Using Bioimpedance Spectroscopy to Assess Volume Status in Dialysis Patients. Blood Purif 2019; 49:178-184. [PMID: 31851988 DOI: 10.1159/000504079] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/10/2019] [Indexed: 12/15/2022]
Abstract
The aim of the paper is to reflect on the current status of bioimpedance spectroscopy (BIS) in fluid management in dialysis patients. BIS identifies fluid overload (FO) as a virtual (overhydration) compartment, which is calculated from the difference between the measured extracellular volume and the predicted values based on a fixed hydration of lean and adipose tissue mass. FO is highly prevalent in both hemodialysis (HD) and peritoneal dialysis (PD) patients, while levels of FO are at a population level comparable between PD patients and HD patients when measured before the dialysis treatment. Even mild levels of FO are independently related to outcome in patients on HD, PD as well as in nondialysis patients with advanced chronic kidney disease. FO is not only related to left ventricular hypertrophy (LVH) but also forms part of a multidimensional spectrum with noncardiovascular risk factors such as malnutrition and inflammation. Even after multiple adjustments, FO remains an independent predictor of mortality. BIS-assisted adjustment of dry weight in HD patients has been shown to improve hypertension control and LVH and has resulted in a decline in intradialytic symptomatology. On the other hand, with increased fluid removal, target weight may not always be reached due to an increase in intradialytic symptomatology, and care should be applied in target weight adjustment in fluid overloaded patients with severe malnutrition and/or inflammation. Although a reduction in hospitalization rate was suggested, the effect of BIS-guided dry weight adjustment on mortality has not yet been shown, however, although available studies are underpowered. In PD patients, results have been more equivocal, which may be partly related to differences in treatment protocols or study populations. Future large-scale studies are needed to assess the full potential of BIS.
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Affiliation(s)
- Frank M van der Sande
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Esther R van de Wal-Visscher
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Stefano Stuard
- Clinical and Therapeutical Governance-Care Value Management, Fresenius Medical Care Deutschland, Bad Homburg, Germany
| | - Ulrich Moissl
- Global Research and Development, Fresenius Medical Care Deutschland, Bad Homburg, Germany
| | - Jeroen P Kooman
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, The Netherlands,
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