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Siddiqui R, Obi Y, Dossabhoy NR, Shafi T. Is There a Role for SGLT2 Inhibitors in Patients with End-Stage Kidney Disease? Curr Hypertens Rep 2024:10.1007/s11906-024-01314-3. [PMID: 38913113 DOI: 10.1007/s11906-024-01314-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2024] [Indexed: 06/25/2024]
Abstract
PURPOSE OF REVIEW Chronic kidney disease and end-stage kidney disease (ESKD) are well-established risk factors for cardiovascular disease (CVD), the leading cause of mortality in the dialysis population. Conventional therapies, such as statins, blood pressure control, and renin-angiotensin-aldosterone system blockade, have inadequately addressed this cardiovascular risk, highlighting the unmet need for effective treatment strategies. Sodium-glucose transporter 2 (SGLT2) inhibitors have demonstrated significant renal and cardiovascular benefits among patients with type 2 diabetes, heart failure, or CKD at risk of progression. Unfortunately, efficacy data in dialysis patients is lacking as ESKD was an exclusion criterion for all major clinical trials of SGLT2 inhibitors. This review explores the potential of SGLT2 inhibitors in improving cardiovascular outcomes among patients with ESKD, focusing on their direct cardiac effects. RECENT FINDINGS Recent clinical and preclinical studies have shown promising data for the application of SGLT2 inhibitors to the dialysis population. SGLT2 inhibitors may provide cardiovascular benefits to dialysis patients, not only indirectly by preserving the remaining kidney function and improving anemia but also directly by lowering intracellular sodium and calcium levels, reducing inflammation, regulating autophagy, and alleviating oxidative stress and endoplasmic reticulum stress within cardiomyocytes and endothelial cells. This review examines the current clinical evidence and experimental data supporting the use of SGLT2 inhibitors, discusses its potential safety concerns, and outlines ongoing clinical trials in the dialysis population. Further research is needed to evaluate the safety and effectiveness of SGLT2 inhibitor use among patients with ESKD.
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Affiliation(s)
- Rehma Siddiqui
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, USA
| | - Yoshitsugu Obi
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, USA.
| | - Neville R Dossabhoy
- Division of Nephrology, Department of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, USA
| | - Tariq Shafi
- Division of Kidney Diseases, Hypertension, & Transplantation, Houston Methodist Hospital, Houston, TX, USA
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2
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Kim SK, Park HJ, Yang DH. An intradialytic aerobic exercise program ameliorates frailty and improves dialysis adequacy and quality of life among hemodialysis patients: a randomized controlled trial. Kidney Res Clin Pract 2023; 42:764-767. [PMID: 38052521 DOI: 10.23876/j.krcp.23.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 09/27/2023] [Indexed: 12/07/2023] Open
Affiliation(s)
- Sun Ki Kim
- College of Nursing, CHA University, Pocheon, Republic of Korea
| | - Hye-Ja Park
- College of Nursing, CHA University, Pocheon, Republic of Korea
| | - Dong-Ho Yang
- Division of Nephrology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
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Okazaki M, Obi Y, Shafi T, Rhee CM, Kovesdy CP, Kalantar-Zadeh K. Residual Kidney Function and Cause-Specific Mortality Among Incident Hemodialysis Patients. Kidney Int Rep 2023; 8:1989-2000. [PMID: 37849997 PMCID: PMC10577493 DOI: 10.1016/j.ekir.2023.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 07/16/2023] [Accepted: 07/24/2023] [Indexed: 10/19/2023] Open
Abstract
Introduction The survival benefit of residual kidney function (RKF) in patients on hemodialysis is presumably due to enhanced fluid management and solute clearance. However, data are lacking on the association of renal urea clearance (CLurea) with specific causes of death. Methods We conducted a longitudinal cohort study of 39,623 adults initiating thrice-weekly in-center hemodialysis from 2007 to 2011 and had data on renal CLurea and urine volume. Multivariable cause-specific proportional hazards model was used to examine the associations between baseline RKF and cause-specific mortality, including sudden cardiac death (SCD), non-SCD cardiovascular death (CVD), and non-CVD. Restricted cubic splines were fitted for change in RKF over 6 months after initiating hemodialysis. Results Among 39,623 patients with data on baseline renal CLurea and urine volume, there was a significant trend toward a higher mortality risk across lower RKF levels, irrespective of cause of death in a case-mix adjustment model (Ptrend < 0.05). Adjustment for ultrafiltration rate (UFR) slightly attenuated the association between low renal CLurea and high cause-specific mortality, whereas adjustment for highest potassium did not have substantial effect. Among 12,169 patients with data on change in RKF, a 6-month decline in renal CLurea showed graded associations with SCD, non-SCD CVD, and non-CVD risk, whereas the graded associations between faster 6-month decline in urine output and higher death risk were clear only for SCD and non-CVD. Conclusion Lower RKF and loss of RKF were associated with higher cause-specific mortality among patients initiating thrice-weekly in-center hemodialysis.
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Affiliation(s)
- Masaki Okazaki
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine School of Medicine, Orange, California, USA
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshitsugu Obi
- Division of Nephrology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Tariq Shafi
- Division of Nephrology, Houston Methodist Hospital, Houston, Texas, USA
| | - Connie M. Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine School of Medicine, Orange, California, USA
- Division of Nephrology, Hypertension, and Kidney Transplantation, University of California Irvine Medical Center, Orange, California, USA
| | - Csaba P. Kovesdy
- Division of Nephrology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
- Nephrology Section, Memphis Veterans Affairs Medical Center, Memphis, Tennessee, USA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine School of Medicine, Orange, California, USA
- Los Angeles County Harbor-UCLA Medical Center, and The Lundquist Institute, Torrance, California, USA
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles (UCLA), Los Angeles, California, USA
- Nephrology Section, Tibor Rubin Veterans Affairs Medical Center, Long Beach, California, USA
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St-Jules DE, Fouque D. A Novel Approach for Managing Protein-Energy Wasting in People With Kidney Failure Undergoing Maintenance Hemodialysis: Rationale and Call for Trials. Am J Kidney Dis 2022; 80:277-284. [PMID: 34974032 DOI: 10.1053/j.ajkd.2021.10.012] [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: 08/08/2021] [Accepted: 10/28/2021] [Indexed: 01/27/2023]
Abstract
Protein-energy wasting (PEW) is a unique presentation of protein-energy malnutrition in people with kidney disease that is characterized by body protein catabolism exceeding anabolism. PEW is especially common in patients undergoing maintenance hemodialysis (HD) treatment. Dietary guidelines for managing PEW in HD patients primarily focus on protein adequacy and typically promote the intake of animal-based protein foods. Although intake of protein and essential amino acids is important for protein synthesis, the emphasis on protein adequacy largely fails to address-and may actually exacerbate-many of the root causes of PEW. This perspective examines the dietary determinants of PEW in people undergoing HD treatment, with an emphasis on upstream disease-related factors that reduce dietary protein utilization and impair dietary intakes. From this, we present a theoretical diet model for managing PEW that includes etiology-based dietary strategies to address barriers to intake and treat disease-related factors, as well as supportive dietary strategies to promote adequate energy and protein intakes. Given the complexity of diet-disease interactions in the pathogenesis of PEW, and its ongoing burden in HD patients, interventional trials are urgently needed to evaluate alternative diet therapy approaches for PEW in this population.
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Affiliation(s)
| | - Denis Fouque
- CarMeN Laboratory, INSERM U1060, Université Claude Bernard Lyon 1, Villeurbanne, and Department of Nephrology, Nutrition, and Dialysis, Centre Hopitalier Lyon Sud, Pierre-Benite, France.
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Yamada S, Tsuruya K, Kitazono T, Nakano T. Emerging cross-talks between chronic kidney disease-mineral and bone disorder (CKD-MBD) and malnutrition-inflammation complex syndrome (MICS) in patients receiving dialysis. Clin Exp Nephrol 2022; 26:613-629. [PMID: 35353283 PMCID: PMC9203392 DOI: 10.1007/s10157-022-02216-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/22/2022] [Indexed: 12/14/2022]
Abstract
Chronic kidney disease–mineral and bone disorder (CKD–MBD) is a systemic disorder that affects multiple organs and systems and increases the risk of morbidity and mortality in patients with CKD, especially those receiving dialysis therapy. CKD–MBD is highly prevalent in CKD patients, and its treatment is gaining attention from healthcare providers who manage these patients. Additional important pathologies often observed in CKD patients are chronic inflammation and malnutrition/protein-energy wasting (PEW). These two pathologies coexist to form a vicious cycle that accelerates the progression of various other pathologies in CKD patients. This concept is integrated into the term “malnutrition–inflammation–atherosclerosis syndrome” or “malnutrition–inflammation complex syndrome (MICS)”. Recent basic and clinical studies have shown that CKD–MBD directly induces inflammation as well as malnutrition/PEW. Indeed, higher circulating levels of inorganic phosphate, fibroblast growth factor 23, parathyroid hormone, and calciprotein particles, as markers for critical components and effectors of CKD–MBD, were shown to directly induce inflammatory responses, thereby leading to malnutrition/PEW, cardiovascular diseases, and clinically relevant complications. In this short review, we discuss the close interplay between CKD–MBD and MICS and emphasize the significance of simultaneous control of these two seemingly distinct pathologies in patients with CKD, especially those receiving dialysis therapy, for better management of the CKD/hemodialysis population.
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Affiliation(s)
- Shunsuke Yamada
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 8128582, Japan.
| | | | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 8128582, Japan
| | - Toshiaki Nakano
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 8128582, Japan
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Identifying the Association of Time-Averaged Serum Albumin Levels with Clinical Factors among Patients on Hemodialysis Using Whale Optimization Algorithm. MATHEMATICS 2022. [DOI: 10.3390/math10071030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Time-averaged serum albumin (TSA) is commonly associated with clinical outcomes in hemodialysis (HD) patients and considered as a surrogate indicator of nutritional status. The whale optimization algorithm-based feature selection (WOFS) model could address the complex association between the clinical factors, and could further combine with regression models for application. The present study aimed to demonstrate an optimal multifactor TSA-associated model, in order to interpret the complex association between TSA and clinical factors among HD patients. A total of 829 HD patients who met the inclusion criteria were selected for analysis. Monthly serum albumin data tracked from January 2009 to December 2013 were converted into TSA categories based on a critical value of 3.5 g/dL. Multivariate logistic regression was used to analyze the association between TSA categories and multiple clinical factors using three types of feature selection models, namely the fully adjusted, stepwise, and WOFS models. Five features, albumin, age, creatinine, potassium, and HD adequacy index (Kt/V level), were selected from fifteen clinical factors by the WOFS model, which is the minimum number of selected features required in multivariate regression models for optimal multifactor model construction. The WOFS model yielded the lowest Akaike information criterion (AIC) value, which indicated that the WOFS model could achieve superior performance in the multifactor analysis of TSA for HD patients. In conclusion, the application of the optimal multifactor TSA-associated model could facilitate nutritional status monitoring in HD patients.
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Sá Martins V, Adragão T, Aguiar L, Pinto I, Dias C, Figueiredo R, Lourenço P, Pascoal T, Pereira J, Pinheiro T, Ramião I, Velez B, Papoila AL, Borges N, Calhau C, Macário F. Prognostic Value of the Malnutrition-inflammation Score in Hospitalization and Mortality on Long-term Hemodialysis. J Ren Nutr 2021; 32:569-577. [PMID: 34922814 DOI: 10.1053/j.jrn.2021.11.002] [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: 08/07/2021] [Revised: 10/11/2021] [Accepted: 11/07/2021] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Since its development, cumulative evidence has accumulated regarding the prognostic value of the Malnutrition-Inflammation Score (MIS/Kalantar score) prognostic value; however, there is a shortage of recent and large studies with comprehensive statistical methodologies that contribute to support a higher level of evidence and a consensual cutoff. The aim of this study was to assess the strength of MIS association with hospitalization and mortality in a nationwide cohort. METHODS This was a historical cohort study of hemodialysis patients from 25 outpatient centers followed up for 48 months. Univariable and multivariable Cox additive regression models were used to analyze the data. The C-index was estimated to assess the performance of the final model. RESULTS Two thousand four hundred forty-four patients were analyzed, 59.0% males, 32.0% diabetic, and median age of 71 years (P25 = 60, P75 = 79). During a median period of 45-month follow-up, with a maximum of 48 months (P25 = 31; P75 = 48), 875 patients presented an MIS <5 (35.8%) and 860 patients (35.2%) died. The proportion of deaths was 23.1% for patients with the MIS <5 and 41.9% if the MIS ≥5 (P < .001). A total of 1,528 patients (62.5%) were hospitalized with a median time to the first hospitalization of 26 months (P25 = 9; P75 = 45). A new cutoff point regarding the risk of death, MIS ≥6, was identified for this study data set. In multivariable analysis for hospitalization risk, a higher MIS, higher comorbidity index, and arteriovenous graft or catheter increased the risk, whereas higher Kt/V and higher albumin had a protective effect. In multivariable analysis for mortality risk, adjusting for age, albumin, normalized protein catabolic rate, Charlson comorbidity index, interdialytic weight gain, Kt/V, diabetes, hematocrit, and vascular access, patients with the MIS ≥6 showed a hazard ratio of 1.469 (95% confidence interval: 1.262-1.711; P < .001). Higher age, higher interdialytic weight gain, higher comorbidity index, and catheter increased significantly the risk, whereas higher Kt/V, higher albumin, and higher normalized protein catabolic rate (≥1.05 g/kg/d) reduced the risk. CONCLUSION The MIS maintains its relevant and significant association with hospitalization and mortality.
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Affiliation(s)
- Vítor Sá Martins
- Medical Department DIAVERUM Portugal, Sintra, Portugal; Faculdade de Ciências da Nutrição e Alimentação, Universidade do Porto, Porto, Portugal; CINTESIS, Center for Health Technology Services Research, Rua Doutor Plácido da Costa, Porto, Portugal.
| | - Teresa Adragão
- Medical Department DIAVERUM Portugal, Sintra, Portugal; Nephrology Department, Santa Cruz Hospital, Carnaxide, Portugal
| | - Leila Aguiar
- Medical Department DIAVERUM Portugal, Sintra, Portugal
| | - Iola Pinto
- CMA, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Lisboa, Portugal; ISEL, Instituto Superior de Engenharia de Lisboa, Lisboa, Portugal
| | - Catarina Dias
- Medical Department DIAVERUM Portugal, Sintra, Portugal
| | | | | | - Tânia Pascoal
- Medical Department DIAVERUM Portugal, Sintra, Portugal
| | | | | | - Inês Ramião
- Medical Department DIAVERUM Portugal, Sintra, Portugal
| | - Brígida Velez
- Medical Department DIAVERUM Portugal, Sintra, Portugal
| | - Ana Luisa Papoila
- CEAUL, Centro de Estatística e Aplicações da Universidade de Lisboa, Lisboa, Portugal; NOVA Medical School
- Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Lisboa, Portugal
| | - Nuno Borges
- Faculdade de Ciências da Nutrição e Alimentação, Universidade do Porto, Porto, Portugal; CINTESIS, Center for Health Technology Services Research, Rua Doutor Plácido da Costa, Porto, Portugal
| | - Conceição Calhau
- CINTESIS, Center for Health Technology Services Research, Rua Doutor Plácido da Costa, Porto, Portugal; NOVA Medical School
- Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Lisboa, Portugal; Unidade Universitária Lifestyle Medicine José de Mello Saúde by NOVA Medical School, Lisboa, Portugal
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8
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Guía de unidades de hemodiálisis 2020. Nefrologia 2021. [DOI: 10.1016/j.nefro.2021.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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9
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Jacq A, Rebibou JM, Kohler E, Baudoin C, Bour JB, De Rougemont A, Marechal E, Legendre M. Normalized protein catabolic rate and lymphopenia drive humoral response to the Pfizer BNT162b2 vaccine in haemodialysis patients. Nephrol Dial Transplant 2021; 36:2140-2142. [PMID: 34383943 DOI: 10.1093/ndt/gfab241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Amélie Jacq
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Jean-Michel Rebibou
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France.,INSERM, UMR 1098 Federation Hospitalo-Universitaire, INCREASE, Besançon, France
| | - Emmanuelle Kohler
- Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Charline Baudoin
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Jean-Baptiste Bour
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Virology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Alexis De Rougemont
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Virology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Elise Marechal
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France
| | - Mathieu Legendre
- Faculté de Médecine et de Pharmacie, University of Bourgogne Franche-Comté, Dijon, France.,Department of Nephrology, University of Bourgogne Franche-Comté, CHU Dijon, France.,INSERM, UMR 1098 Federation Hospitalo-Universitaire, INCREASE, Besançon, France
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Bielopolski D, Wenziger C, Steinmetz T, Rozen Zvi B, Kalantar-Zadeh K, Streja E. Novel Protein to Phosphorous Ratio Score Predicts Mortality in Hemodialysis Patients. J Ren Nutr 2021; 32:450-457. [PMID: 34740537 DOI: 10.1053/j.jrn.2021.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 07/19/2021] [Accepted: 08/10/2021] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Lowering serum phosphorus in people on hemodialysis may improve their survival. However, prior studies have shown that restricting dietary protein intake, a major source of phosphorus, is associated with higher mortality. We hypothesized that a novel metric that incorporates both these values commensurately can improve survival prediction. METHODS We used serum phosphorous and normalized protein catabolic rate (nPCR), a surrogate of dietary protein intake, to form a new metric R that was used to examine the associations with mortality in 63,016 people on hemodialysis (HD) of one year after treatment initiation. Survival models were adjusted for case-mix, malnutrition-inflammation cachexia syndrome (MICS), and residual kidney function (RKF). RESULTS Individuals treated with hemodialysis were divided into five groups in accordance with R value. Group 1 included sick individuals with high phosphorous and low nPCR. Group 5 included individuals with low phosphorous and high nPCR. After 1-year follow-up, survival difference between the groups reflected R value, where an increase in R was associated with improved survival. The association of R with mortality was strengthened by adjustment in demographic variables and attenuated after adjustment to MICS. Mortality associations in accordance with R were not influenced by residual kidney function (RKF). CONCLUSION The novel protein to phosphorus ratio score R predicts mortality in people on dialysis, probably reflecting both nutrition and inflammation state independent of RKF. The metric enables better phosphorus monitoring, although adequate dietary protein intake is ensured and may improve the prediction of outcomes in the clinical setting.
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Affiliation(s)
- Dana Bielopolski
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California, Irvine, School of Medicine, Irvine, CA; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Nephrology Institute, Rabin Medical Center, Petah Tiqva, Israel.
| | - Cachet Wenziger
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California, Irvine, School of Medicine, Irvine, CA
| | - Tali Steinmetz
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Nephrology Institute, Rabin Medical Center, Petah Tiqva, Israel
| | - Benaya Rozen Zvi
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Nephrology Institute, Rabin Medical Center, Petah Tiqva, Israel
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California, Irvine, School of Medicine, Irvine, CA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California, Irvine, School of Medicine, Irvine, CA
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Azzouz JZ, Safdar OY, Awaleh FI, Khoja AA, Alattas AA, Jawhari AA. Nutritional Assessment and Management in Paediatric Chronic Kidney Disease. J Nutr Metab 2021; 2021:8283471. [PMID: 34676115 PMCID: PMC8526268 DOI: 10.1155/2021/8283471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
Nutrition in paediatrics has always been one of the most important factors for optimal growth. Children with chronic kidney disease (CKD) need special consideration for better long-term outcomes, including nutritional status, optimal height, and cognitive function. Nonetheless, there are many obstacles to overcome to attain optimal linear growth and nutritional status in children with CKD. This review highlights the need for tools to assess the growth parameters in CKD. In addition, recommendations for dietary intake play a major role in controlling electrolyte disturbances in patients with CKD. For example, it is still unclear whether it is better to restrict phosphate sources in inorganic, organic, or food additives. The review also summarises different factors such as fluid intake, route of feeding, and essential nutrients that require particular attention in paediatric patients with CKD. In summary, a multidisciplinary team is needed to devise individual nutritional plans to achieve the best outcome and improve the quality of life of patients.
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Affiliation(s)
| | - Osama Yousef Safdar
- Center of Excellence in Pediatric Nephrology, King Abdulaziz University, Jeddah, Saudi Arabia
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12
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A maintenance hemodialysis mortality prediction model based on anomaly detection using longitudinal hemodialysis data. J Biomed Inform 2021; 123:103930. [PMID: 34624552 DOI: 10.1016/j.jbi.2021.103930] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 08/05/2021] [Accepted: 10/01/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Most end-stage renal disease patients rely on hemodialysis (HD) to maintain their life, and they face a serious financial burden and high risk of mortality. Due to the current situation of the health care system in China, a large number of patients on HD are lost to follow-up, making the identification of patients with high mortality risks an intractable problem. OBJECTIVE This paper aims to propose a maintenance HD mortality prediction approach using longitudinal HD data under the situation of data imbalance caused by follow-up losses. METHODS A long short-term memory autoencoder (LSTM AE) based model is proposed to capture the physical condition changes of HD patients and distinguish between surviving and nonsurviving patients. The approach adopts anomaly detection theory, using only the surviving samples in the model training and identifying dead samples based on autoencoder reconstruction errors. The data are from a Chinese hospital electronic health record system between July 30, 2007, and August 25, 2016, and 36/72/108 continuous HD sessions were used to predict mortality within prediction windows of 90/180/365 days. Furthermore, the model performance is compared to that of logistic regression, support vector machine, random forest, LSTM classifier, isolation forest, and stacked autoencoder models. RESULTS Data for 1200 patients (survival: 1055, death: 145) were used to predict mortality during the next 90 days using 36 continuous HD sessions. The area under the PR curve for the LSTM AE was 0.57, the Recallmacro was 0.86, and the F1-scoremacro was 0.87, outperforming the other models. Upon varying the observation window or prediction window length, LSTM AE continued to outperform the other models. According to the variable importance analysis, the dialysis session length was the feature that contributed the most to the prediction model. CONCLUSIONS The proposed approach was able to detect patients on maintenance HD with high mortality risk from an imbalanced dataset using anomaly detection theory and leveraging longitudinal HD data.
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Torreggiani M, Fois A, Njandjo L, Longhitano E, Chatrenet A, Esposito C, Fessi H, Piccoli GB. Toward an individualized determination of dialysis adequacy: a narrative review with special emphasis on incremental hemodialysis. Expert Rev Mol Diagn 2021; 21:1119-1137. [PMID: 34595991 DOI: 10.1080/14737159.2021.1987216] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The search for the 'perfect' renal replacement therapy has been paralleled by the search for the perfect biomarkers for assessing dialysis adequacy. Three main families of markers have been assessed: small molecules (prototype: urea); middle molecules (prototype β2-microglobulin); comprehensive and nutritional markers (prototype of the simplified assessment, albumin levels; composite indexes as malnutrition-inflammation score). After an era of standardization of dialysis treatment, personalized dialysis schedules are increasingly proposed, challenging the dogma of thrice-weekly hemodialysis. AREAS COVERED In this review, we describe the advantages and limitations of the approaches mentioned above, focusing on the open questions regarding personalized schedules and incremental hemodialysis. EXPERT OPINION In the era of personalized dialysis, the assessment of dialysis adequacy should be likewise personalized, due to the limits of 'one size fits all' approaches. We have tried to summarize some of the relevant issues regarding the determination of dialysis adequacy, attempting to adapt them to an elderly, highly comorbidity population, which would probably benefit from tailor-made dialysis prescriptions. While no single biomarker allows precisely tailoring the dialysis dose, we suggest using a combination of clinical and biological markers to prescribe dialysis according to comorbidity, life expectancy, residual kidney function, and small and medium-size molecule depuration.
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Affiliation(s)
| | - Antioco Fois
- Nèphrologie et Dialyse, Centre Hospitalier Le Mans, Le Mans, France
| | - Linda Njandjo
- Nèphrologie et Dialyse, Centre Hospitalier Le Mans, Le Mans, France
| | - Elisa Longhitano
- Department of Clinical and Experimental Medicine, Unit of Nephrology and Dialysis, A.o.u. "G. Martino," University of Messina, Messina, Italy
| | - Antoine Chatrenet
- Nèphrologie et Dialyse, Centre Hospitalier Le Mans, Le Mans, France.,Laboratory "Movement, Interactions, Performance" (EA 4334), Le Mans University, Le Mans, France
| | - Ciro Esposito
- Nephrology and Dialysis, ICS Maugeri S.p.A. Sb, Pavia, Italy.,Department of Internal Medicine, University of Pavia, Pavia, Italy
| | - Hafedh Fessi
- Department of Nephrology, Hospital Tenon, Paris, France
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14
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The Relationship Between Nutritional Status Based on Subjective Global Assessment and Dialysis Adequacy. Nephrourol Mon 2021. [DOI: 10.5812/numonthly.116254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Background: Malnutrition is common in patients undergoing hemodialysis and leads to a decrease in dialysis adequacy. The evaluation of dialysis adequacy is very important. Objectives: This study was done to investigate the relationship between patients’ nutrition status based on Subjective Global Assessment (SGA) and their dialysis adequacy. Methods: This cross-sectional descriptive study was conducted in Tehran, Iran, in 2019. Three hundred qualified patients were selected by cluster sampling. Before the dialysis session, measurement of height and weight and blood sampling for albumin, total iron-binding capacity (TIBC), blood urea nitrogen (BUN), and creatinine (Cr) assessment were performed. After the dialysis session, measurement of weight and second sampling for BUN were done. SGA forms were filled by patients. Patients’ dialysis adequacy was calculated based on the DaugirdasII formula, and data were analyzed using SPSS 21. Results: From 300 patients, 128 cases (42.7%) had normal nutrition status, while 148 cases (49.3%) had mild to moderate malnutrition and 24 cases (8%) had severe malnutrition with mean dialysis adequacy of 1.07. The present study showed a significant statistical relationship between malnutrition and education (P < 0.001), body mass index (BMI) (P = 0.03), albumin (P < 0.001), TIBC (P < 0.001), and dialysis adequacy (P < 0.001). Gender, age, and dialysis duration showed no significant relationship with nutrition status based on the SGA index. Conclusions: The findings showed a high relative frequency of malnutrition and a decrease in patients’ dialysis adequacy, which emphasize the patient’s educational level, proper management of nutrition along with regular consultations by nutritionists, better implementation of the dialysis procedure, and regular follow-up of dialysis adequacy.
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Aryaie M, Sharifi H, Saber A, Nazemipour M, Mansournia MA. Longitudinal Causal Effects of Normalized Protein Catabolic Rate on All-Cause Mortality in Patients With End-Stage Renal Disease: Adjusting for Time-Varying Confounders Using the G-Estimation Method. Am J Epidemiol 2021; 190:1133-1141. [PMID: 33350437 DOI: 10.1093/aje/kwaa281] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 12/13/2020] [Accepted: 12/17/2020] [Indexed: 12/20/2022] Open
Abstract
In this study, we aimed to estimate the causal effect of normalized protein catabolic rate (nPCR) on mortality among end-stage renal disease (ESRD) patients in the presence of time-varying confounding affected by prior exposure using g-estimation. Information about 553 ESRD patients was retrospectively collected over an 8-year period (2011-2019) from hemodialysis facilities in Kerman, Iran. nPCR was dichotomized as <1.2 g/kg/day versus ≥1.2 g/kg/day. Then a standard time-varying accelerated failure time (AFT) Weibull model was built, and results were compared with those generated by g-estimation. After appropriate adjustment for time-varying confounders, weighted g-estimation yielded 78% shorter survival time (95% confidence interval (95% CI): -81, -73) among patients with a continuous nPCR <1.2 g/kg/day than among those who had nPCR ≥1.2 g/kg/day during follow-up, though it was 18% (95% CI: -57, 54) in the Weibull model. Moreover, hazard ratio estimates of 4.56 (95% CI: 3.69, 5.37) and 1.20 (95% CI: 0.66, 2.17) were obtained via weighted g-estimation and the Weibull model, respectively. G-estimation indicated that inadequate dietary protein intake characterized by nPCR increases all-cause mortality among ESRD patients, but the Weibull model provided an effect estimate that was substantially biased toward the null.
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16
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Debnath S, Rueda R, Bansal S, Kasinath BS, Sharma K, Lorenzo C. Fatigue characteristics on dialysis and non-dialysis days in patients with chronic kidney failure on maintenance hemodialysis. BMC Nephrol 2021; 22:112. [PMID: 33773596 PMCID: PMC7999524 DOI: 10.1186/s12882-021-02314-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/15/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Fatigue is prevalent in hemodialysis patients who for survival follow a strict dialysis treatment regimen - dialysis and non-dialysis days. As a result, the daily activities, symptom burden, and clinical outcomes of hemodialysis patients vary significantly between dialysis and non-dialysis days. Fatigue is one of the most reported debilitating symptoms by hemodialysis patients with profound negative impact on their quality of life. Prior studies assessed fatigue during the preceding 7 or 30 days and did not discriminate fatigue characteristics between dialysis and non-dialysis days. We aimed to characterize and compare fatigue severity and fatigue interference with daily activities between dialysis and non-dialysis days. METHODS Hemodialysis patients self-reported fatigue on consecutive dialysis and non-dialysis days using the 9-item Brief Fatigue Inventory. The differences in fatigue characteristics between dialysis and non-dialysis days were analyzed using one-way ANCOVA. RESULTS Global fatigue burden was worse on a dialysis day compared to a non-dialysis day (P for all < 0.001). Age and education were associated with fatigue, but hemodialysis-related variables were not. A significant inverse association of physical activity with fatigue severity observed on non-dialysis day; there was also a negative association between the normalized protein catabolic rate and fatigue severity on both dialysis and non-dialysis days. The positive association of depression with fatigue severity and fatigue interference were consistent on both dialysis and non-dialysis days. None of these factors, however, explained differences in fatigue characteristics between dialysis and non-dialysis days. CONCLUSIONS Fatigue, measured in severity and interference, was more pronounced on a dialysis day relative to a non-dialysis day. These differences were not explained by age, sex, education, hemodialysis-related variables, habitual exercise, nutritional status, and or depression. The quantitative measures of fatigue characteristics may facilitate future interventional trials design and better fatigue management for hemodialysis patients.
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Affiliation(s)
- Subrata Debnath
- Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, USA.
| | - Rain Rueda
- University Health, 4502 Medical Dr, San Antonio, TX, USA
| | - Shweta Bansal
- Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, USA
| | - Balakuntalam S Kasinath
- Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, USA
| | - Kumar Sharma
- Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, USA
| | - Carlos Lorenzo
- Division of Clinical Immunology, Department of Medicine, University of Texas Health San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, USA
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Zheng CM, Hsu YH, Lu CL, Chen HH, Lu KC, Chen JS, Chen KC, Peng CC, Lin YF, Hsu CC, Wu MS, Lin YC. The modulating effect of dietary protein intake on mortality in long-term hemodialysis patients: A nationwide population-based study. Int J Clin Pract 2021; 75:e13747. [PMID: 33010055 DOI: 10.1111/ijcp.13747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 09/23/2020] [Indexed: 11/28/2022] Open
Abstract
AIMS OF THE STUDY A high prevalence of protein-energy wasting and malnutrition among uremic patients is associated with an increase in morbidity and mortality. We aimed to investigate the modulating effect of daily dietary protein intake (DPI) evaluated by normalised protein catabolic rate (nPCR) on mortality in long-term haemodialysis (HD) patient from a nationwide population-based study. METHODS USED TO CONDUCT THE STUDY By Taiwan Renal Registry Data System between 2005 and 2012, we divided the long-term HD patients into average nPCR < 1.2 and nPCR ≥ 1.2 groups according to the current guideline. The relation of nPCR with three-year all-cause and cardiovascular (CV) mortality were evaluated. The cox regression method for predicted mortality by nPCR was used. RESULTS OF THE STUDY Among 88 330 HD patients, 58 122 (65.8%) patients were in average nPCR < 1.2 group and 30 208 (34.2%) in average nPCR ≥ 1.2 group. Both all-cause and cardiovascular (CV) mortality risks were increased in nPCR < 1.2 group after adjusting for demographics and laboratories cofactors in our multivariate cox regression model. Patients with nPCR < 1.2 and albumin ≥ 3.7 had a higher adjusted hazard ratio (aHR) for all-cause and CV mortality (1.16 [95% confidence interval (CI): 1.07-1.25, P < .001]; 1.15 [95% CI: 1.02-1.31, P = .03], respectively), compared with the reference group with nPCR ≥ 1.2 and albumin ≥ 3.7. Interestingly, there was no difference in mortality risk between low DPI subgroup (nPCR < 1.2 and Alb < 3.7) and the reference group (nPCR ≥ 1.2 and Alb < 3.7). Further stratification analysis revealed that low DPI subgroup (nPCR < 1.2, Alb ≥ 3.7 and TC ≥ 150) had an increased risk of both all-cause and CV mortality (aHR 1.14 [95% CI: 1.04-1.25, P = .005]; aHR 1.17 [95% CI: 1.02-1.35, P = .026], respectively). CONCLUSIONS DRAWN FROM THE STUDY Low DPI (as presented by nPCR) independently correlated with all-cause and CV mortality among HD patients. Mortality risks were higher in low DPI patients even with normoalbuminaemia and non-hypocholesterolaemia. Further investigations on the importance of increasing DPI in HD patients is warranted.
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Affiliation(s)
- Cai-Mei Zheng
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yung-Ho Hsu
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chien-Lin Lu
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, Taipei, Taiwan
| | - Hsi-Hsien Chen
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Kuo-Cheng Lu
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, Taipei, Taiwan
| | - Jin-Shuen Chen
- Division of Nephrology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Kuan-Chou Chen
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Urology, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chiung-Chi Peng
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yuh-Feng Lin
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Cheng Hsu
- Institute of Population Health Sciences, National Health Research Institutes, Maioli, Taiwan
| | - Mai-Szu Wu
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yen-Chung Lin
- Taipei Medical University-Research Center of Urology and Kidney (TMU-RCUK), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
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Navarro-González JF, Arenas MD, Henríquez-Palop F, Lloret MJ, Molina P, Ríos Moreno F, Macia-Lagier MA, Espinel L, Sánchez E, Lago M, Crespo A, Bover J. Real-world management of hyperphosphataemia with sucroferric oxyhydroxide: the VELREAL multicentre study. Clin Kidney J 2021; 14:681-687. [PMID: 33626111 PMCID: PMC7886585 DOI: 10.1093/ckj/sfaa226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND The efficacy and safety of sucroferric oxyhydroxide (SO) have been reported in clinical trials. However, real-life data are scarce. This study presents data on the use, efficacy and safety of SO in real clinical practice. METHODS We performed a retrospective multicentre study, without any influence on the prescription decisions, that included 220 patients from 11 Spanish centres. Demographic, treatment, analytical and nutritional parameters and adherence, side effects and dropout rates were collected during 6 months. RESULTS SO was initiated due to inadequate control of serum phosphate (P) in 70% of participants and in 24.5% to reduce the number of tablets. Monotherapy with SO increased from 44% to 74.1%, with a reduction in the average daily number of sachets/tablets from six to two. Serum P decreased by 20% (4.6 ± 1.2 versus 5.8 ± 1.3 mg/dL; P < 0.001), with a significant reduction in intact parathyroid hormone levels (P < 0.01). The percentage of patients with adequate serum P control at threshold levels of 5 and 4.5 mg/dL increased by 45.4% and 35.9%, respectively. Serum ferritin was not modified, while the transferrin saturation index increased significantly (P = 0.04). Serum albumin and normalized protein catabolic rate, when normalized by serum P, increased, averaging 37% and 39%, respectively (P < 0.001). Adherent patients increased from 28.2% to 52.7%. Adverse effects were reported by 14.1% of participants, with abandonment of treatment in 9.5%. CONCLUSIONS The use of SO in real-life results in better control of serum P, a reduction in the number of tablets and an improvement in therapeutic adherence. In addition, it may be beneficial with regards to secondary hyperparathyroidism and nutritional status.
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Affiliation(s)
- Juan F Navarro-González
- Servicio de Nefrología y Unidad de Investigación, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
- Instituto de Tecnologías Biomédicas, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- Red de Investigación Renal (REDINREN – RD16/0009), Instituto de Salud Carlos III, Madrid, Spain
- ERA-EDTA Working Group on CKD-MBD, Parma, Italy
| | | | | | | | - Pablo Molina
- Servicio de Nefrología, Hospital Universitario Dr. Peset, Valencia, Spain
| | | | | | - Laura Espinel
- Servicio de Nefrología, Hospital Universitario de Getafe, Madrid, Spain
| | - Emilio Sánchez
- Servicio de Nefrología, Hospital Universitario de Cabueñes, Gijón, Spain
| | - Mar Lago
- Servicio de Nefrología, Complejo Hospitalario Universitario Insular, Las Palmas de Gran Canaria, Spain
| | - Antonio Crespo
- Servicio de Nefrología, Hospital Marina Baixa, Alicante, Spain
| | - Jordi Bover
- Red de Investigación Renal (REDINREN – RD16/0009), Instituto de Salud Carlos III, Madrid, Spain
- Servicio de Nefrología, Fundació Puigvert, Barcelona, Spain
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Yamada S, Nakano T, Tsuneyoshi S, Arase H, Shimamoto S, Taniguchi M, Tokumoto M, Hirakata H, Ooboshi H, Tsuruya K, Kitazono T. Association between modified simple protein-energy wasting (PEW) score and all-cause mortality in patients receiving maintenance hemodialysis. RENAL REPLACEMENT THERAPY 2020. [DOI: 10.1186/s41100-020-00289-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Protein-energy wasting (PEW) is a frequently observed complication that leads to increased mortality in hemodialysis patients. However, a multifaceted assessment of PEW by combined objective nutritional parameters has not yet been established.
Methods
In total, 144 Japanese patients receiving maintenance hemodialysis at a hemodialysis center were retrospectively followed for 7 years. The primary outcome was all-cause death. The main exposure was a modified simple PEW score (0, 1, 2, 3, or 4), calculated from four parameters: serum albumin and creatinine levels, normalized protein catabolic rate, and body mass index. These parameters are included in the subcategories of PEW as defined by the International Society of Renal Nutrition and Management. The cutoff values of the modified simple PEW score components were based on the receiver operating characteristics curves determined by univariate logistic regression analyses. Risk estimates for all-cause mortality were calculated by the Cox proportional hazards model adjusted for potential confounding factors.
Results
During the median 5.7-years follow-up period, 37 patients died of any cause. When patients were divided into three subgroups (G1–G3) based on the modified simple PEW score, a multivariable-adjusted analysis showed that the risks of all-cause death in groups G2 and G3 were significantly higher than in the lowest score group (G1), with hazard risk (95% confidence interval) 3.10 (1.16–8.26) (P = 0.024) and 5.68 (1.85–17.45) (P = 0.002), respectively.
Conclusions
The modified simple PEW score is a useful composite indicator of nutritional status that stratifies the risk of all-cause mortality in patients undergoing maintenance hemodialysis.
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Mollahosseini A, Argumeedi S, Abdelrasoul A, Shoker A. A case study of poly (aryl ether sulfone) hemodialysis membrane interactions with human blood: Molecular dynamics simulation and experimental analyses. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 197:105742. [PMID: 32947069 DOI: 10.1016/j.cmpb.2020.105742] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
Patients with end-stage renal diseases (ESRD) require specific health cares as the accumulation of toxins due to the lack of kidney functionality would affect their lives. However, the mortality rate is still high due to cardiovascular diseases, socks, etc. A majority of patients with chronic kidney disease (CKD) require hemodialysis services. Blood purifying membranes, as the main component of hemodialysis setups, however, still suffer from lack of optimum biocompatibility, which results in morbidity and mortality of hemodialysis service receiving patients. The goal of the present case study is to have an in-depth understanding of the current blood-hemodialysis membrane interactions occurring during hemodialysis sessions using poly (aryl ether sulfone)-poly (vinyl pyrrolidone) (PAES-PVP) membrane. Attenuated total reflectance-Fourier transmission infrared (ATR-FTIR) spectroscopy, Raman spectroscopy, and solid-state nuclear magnetic resonance (SSNMR) spectroscopy were used to assess the initial chemical structure of the PAES-PVP membrane along with the variations after with the infections with human blood. Furthermore, scanning electron microscopy (SEM) and Transition electron microscopy (TEM) were used to visualize the structural variation of the membrane, blood aggregations, and blood clots on the membrane surface. Besides, Molecular dynamics (MD) simulation was used to assess the interaction of PAES-PVP with major human blood proteins, in terms of interaction energy, which is a novel contribution to the area. The macromolecules (human serum albumin (HSA), human serum transferrin (TRF), and human fibrinogen (HFG)) were chosen from the plasma protein component. These protein structures were chosen based on their different molecular size. Three advanced spectroscopy techniques and two advanced visualization techniques were used for the assessment of the membranes. Spectroscopy studies revealed amine related peak displacement and intensity shifts as indices for attachment of biological species to the polymeric membrane surfaces. Raman peaks around 370, 798, and 1299 cm-1, which experienced significant shifts that were related to carbon-nitrogen and sulfur-oxygen bonds due to protein adhesion. Visualization techniques illustrated blood protein fouling patterns and extracellular vesicles' presence in the pore structures into membranes. The findings highlight the importance of whole structure biocompatibility improvement, rather than only focusing on surface modifications of hemodialysis membranes. Molecular dynamics simulation assessment showed various interaction behaviors for different proteins suggesting molecular weight and active residues of the protein macromolecules play an important role in interacting with polymeric structure. FB had the highest interaction (4,274,749.07 kcal/mol) and binding (10,370.90 kcal/mol) energy with the PAES-PVP structure. TRF owned the lowest interaction energy with respect to its lower molecular weight and fewer active residue count.
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Affiliation(s)
- Arash Mollahosseini
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada
| | - Srija Argumeedi
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada
| | - Amira Abdelrasoul
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada; Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada.
| | - Ahmed Shoker
- Nephrology Division, College of Medicine, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada; Saskatchewan Transplant Program, St. Paul's Hospital, 1702 20th Street West Saskatoon Saskatchewan S7M 0Z9 Canada
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21
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Daugirdas JT. Equations to Estimate the Normalized Creatinine Generation Rate (CGRn) in 3/Week Dialysis Patients With or Without Residual Kidney Function. J Ren Nutr 2020; 31:90-95. [PMID: 32868165 DOI: 10.1053/j.jrn.2020.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 02/24/2020] [Accepted: 03/01/2020] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Normalized creatinine generation rate (CGRn) can be computed for a variety of dialysis schedules using a recently described kinetic modeling program. However, the availability of estimating equations might facilitate broader study of this metric. We developed equations to estimate CGRn based on modeling and then tested them against modeled CGRn values in the Frequent Hemodialysis Network Nocturnal Trial baseline (3/week) dataset. DESIGN AND METHODS We used a "what-if" derivation of a previously published variable volume 2-pool creatinine kinetic model to generate predicted predialysis values of serum creatinine that would result from creatinine generation rates of 250-2000 mg/day in patients with creatinine distribution volumes of 20 to 50 L, dialyzed from 60 to 480 min per treatment three times a week. Then, in patients with residual kidney function, we calculated an "anuric expected predialysis serum creatinine value" before applying the same equations. We then compared estimated CGRn values as predicted by this approach with modeled values in patient data from the Frequent Hemodialysis Network Nocturnal Trial. RESULTS The estimating equations for CGRn yielded results similar to those obtained with formal modeling, in both anuric patients and those with residual kidney function, with mean percent error of 0.845 ± 6.15 (SD) in anuric patients, and ‒0.29 ± 4.90 in patients with a mean creatinine clearance of 5.44 ± 4.82 mL/min, with R-squared values of 0.96 in both anuric patients and those with residual renal clearance of creatinine. CONCLUSIONS In patients dialyzed 3/week, CGRn can be estimated using prediction equations. Use of these equations may facilitate broader investigation of CGRn as a measure of nutritional status and outcome.
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Affiliation(s)
- John T Daugirdas
- University of Illinois at Chicago School of Medicine, Chicago, Illinois.
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22
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Lee YJ, Okuda Y, Sy J, Lee YK, Obi Y, Cho S, Chen JLT, Jin A, Rhee CM, Kalantar-Zadeh K, Streja E. Ultrafiltration Rate, Residual Kidney Function, and Survival Among Patients Treated With Reduced-Frequency Hemodialysis. Am J Kidney Dis 2019; 75:342-350. [PMID: 31813665 DOI: 10.1053/j.ajkd.2019.08.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 08/09/2019] [Indexed: 01/24/2023]
Abstract
RATIONALE & OBJECTIVE Patients receiving twice-weekly or less-frequent hemodialysis (HD) may need to undergo higher ultrafiltration rates (UFRs) to maintain acceptable fluid balance. We hypothesized that higher UFRs are associated with faster decline in residual kidney function (RKF) and a higher rate of mortality. STUDY DESIGN Retrospective cohort study. SETTING & PARTICIPANTS 1,524 patients with kidney failure who initiated maintenance HD at a frequency of twice or less per week for at least 6 consecutive weeks at some time between 2007 and 2011 and for whom baseline data for UFR and renal urea clearance were available. PREDICTOR Average UFR during the first patient-quarter during less-frequent HD (<6, 6-<10, 10-<13, and≥13mL/h/kg). OUTCOME Time to all-cause and cardiovascular death, slope of decline in RKF during the first year after initiation of less-frequent HD (with slopes above the median categorized as rapid decline). ANALYTICAL APPROACH Cox proportional hazards regression for time to death and logistic regression for the analysis of rapid decline in RKF. RESULTS Among 1,524 patients, higher UFR was associated with higher all-cause mortality; HRs were 1.43 (95% CI, 1.09-1.88), 1.51 (95% CI, 1.08-2.10), and 1.76 (95% CI, 1.23-2.53) for UFR of 6 to<10, 10 to<13, and≥13mL/h/kg, respectively (reference: UFR < 6mL/h/kg). Higher UFR was also associated with higher cardiovascular mortality. Baseline RKF modified the association between UFR and mortality; the association was attenuated among patients with renal urea clearance≥5mL/min/1.73m2. Higher UFR had a graded association with rapid decline in RKF; ORs were 1.73 (95% CI, 1.18-2.55), 1.89 (95% CI, 1.12-3.17), and 2.75 (95% CI, 1.46-5.18) at UFRs of 6 to<10, 10 to<13, and≥13mL/h/kg, respectively (reference: UFR < 6mL/h/kg). LIMITATIONS Residual confounding from unobserved differences across exposure categories. CONCLUSIONS Higher UFR was associated with worse outcomes, including shorter survival and more rapid loss of RKF, among patients receiving regular HD treatments at a frequency of twice or less per week.
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Affiliation(s)
- Yu-Ji Lee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA; Division of Nephrology, Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Yusuke Okuda
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA
| | - John Sy
- Nephrology Section, VA Long Beach Healthcare System, Long Beach, CA
| | - Yong Kyu Lee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA
| | - Seong Cho
- Division of Nephrology, Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Joline L T Chen
- Nephrology Section, VA Long Beach Healthcare System, Long Beach, CA
| | - Anna Jin
- Nephrology Section, VA Long Beach Healthcare System, Long Beach, CA
| | - Connie M Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology & Hypertension, University of California Irvine Medical Center, Orange, CA.
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23
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Ye X, Kooman JP, van der Sande FM, Raimann JG, Usvyat LA, Wang Y, Maddux FW, Kotanko P. Relationship between serum phosphate levels and survival in chronic hemodialysis patients: interactions with age, malnutrition and inflammation. Clin Kidney J 2019; 14:348-357. [PMID: 33564438 PMCID: PMC7857835 DOI: 10.1093/ckj/sfz143] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/10/2019] [Indexed: 12/14/2022] Open
Abstract
Background Evidence indicates that the inverse relationships between phosphate levels and mortality maybe modified by age. Furthermore, malnutrition and inflammation could strengthen the risk associated with phosphate abnormalities. This study aimed to assess the associations between phosphate levels and mortality while accounting for the interactions with age and parameters associated with malnutrition and inflammation in hemodialysis (HD) patients. Methods Adult HD patients (n = 245 853) treated in Fresenius Medical Care North America clinics from January 2010 to October 2018 were enrolled. Baseline was defined as Months 4-6 on dialysis, with the subsequent 12 months as the follow-up period. Univariate and multivariate Cox proportional hazard models with spline terms were applied to study the nonlinear relationships between serum phosphate levels and mortality. The interactions of phosphate levels with albumin, creatinine, normalized protein catabolic rate (nPCR) and neutrophil-lymphocyte ratio (NLR) were assessed with smoothing spline analysis of variance Cox proportional hazard models. Results Older patients tended to have lower levels of serum phosphate, albumin, creatinine and nPCR. Additionally, both low (<4.0 mg/dL) and high (>5.5 mg/dL) phosphate levels were associated with higher risk of mortality across all age strata. The U-shaped relationships between phosphate levels and outcome persisted even for patients with low or high levels of serum albumin, creatinine, nPCR and NLR, respectively. Conclusion The consistent U-shaped relationships between serum phosphate and mortality across age strata and levels of inflammatory and nutritional status should prompt the search for underlying causes and potentially nutritional intervention in clinical practice.
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Affiliation(s)
- Xiaoling Ye
- Research Department, Renal Research Institute, New York, NY, USA
| | - Jeroen P Kooman
- Nephrology Department, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Frank M van der Sande
- Nephrology Department, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Jochen G Raimann
- Research Department, Renal Research Institute, New York, NY, USA
| | - Len A Usvyat
- Research Department, Renal Research Institute, New York, NY, USA.,Global Medical Office, Fresenius Medical Care, Waltham, MA, USA
| | - Yuedong Wang
- Department of Statistics and Applied Probability, University of California-Santa Barbara, Santa Barbara, CA, USA
| | | | - Peter Kotanko
- Research Department, Renal Research Institute, New York, NY, USA.,Department of Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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24
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Kalantar-Zadeh K, Ficociello LH, Parameswaran V, Athienites NV, Mullon C, Kossmann RJ, Coyne DW. Changes in serum albumin and other nutritional markers when using sucroferric oxyhydroxide as phosphate binder among hemodialysis patients: a historical cohort study. BMC Nephrol 2019; 20:396. [PMID: 31664928 PMCID: PMC6820926 DOI: 10.1186/s12882-019-1582-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/03/2019] [Indexed: 12/16/2022] Open
Abstract
Background Elevated serum phosphorus concentrations are common among maintenance hemodialysis patients. Protein is a major source of dietary phosphate, but restriction of protein intake can result in hypoalbuminemia and protein-energy wasting. We hypothesized that sucroferric oxyhydroxide (SO), a potent phosphate binder with a low pill burden, may reduce serum phosphorus levels in hemodialysis patients with hypoalbuminemia without adversely impacting albumin levels or dietary intake of protein. Methods We retrospectively examined de-identified data from 79 adult, in-center hemodialysis patients with baseline hypoalbuminemia (≤ 3.5 g/dL) switched to SO as part of routine clinical care for at least 1 year. Temporal changes (3-month intervals from baseline through Q4) in phosphate binder pill burden, serum phosphorous levels, nutritional markers, and equilibrated Kt/V were analyzed. Data from a matched reference group of non-hypoalbuminemic patients (N = 79) switched to SO were also examined. Results SO therapy was associated with a mean reduction of 45.7 and 45.1% in daily phosphate binder pill burden, and a mean reduction of 0.4 mg/dL and 0.51 mg/dL in serum phosphorus levels for the hypoalbuminemic and non-hypoalbuminemic patients, respectively. Hypoalbuminemic patients demonstrated significant increases in mean serum albumin levels from 3.50 mg/dL at baseline to 3.69, 3.74, 3.70, and 3.69 mg/dL during Q1 through Q4, respectively (P < 0.0001), whereas serum albumin levels remained unchanged in the non-hypoalbuminemic group. Conclusions Both hypoalbuminemic and non-hypoalbuminemic patients switching to SO exhibited significant reductions in serum phosphorus concentrations and daily phosphate binder pill burden. Among hypoalbuminemic patients, the initiation of SO therapy was also associated with increases in serum albumin, suggesting therapy may have allowed patients to increase their dietary intake of protein.
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Affiliation(s)
| | | | | | | | - Claudy Mullon
- Fresenius Medical Care Renal Therapies Group, Waltham, MA, USA
| | | | - Daniel W Coyne
- Washington University School of Medicine, 660 S. Euclid Ave., CB 8129, St. Louis, MO, 63110, USA.
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Suzuki S, Yamashita T, Sakama T, Arita T, Yagi N, Otsuka T, Semba H, Kano H, Matsuno S, Kato Y, Uejima T, Oikawa Y, Matsuhama M, Yajima J. Comparison of risk models for mortality and cardiovascular events between machine learning and conventional logistic regression analysis. PLoS One 2019; 14:e0221911. [PMID: 31499517 PMCID: PMC6733605 DOI: 10.1371/journal.pone.0221911] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/16/2019] [Indexed: 01/22/2023] Open
Abstract
AIMS Non-linear models by machine learning may identify different risk factors with different weighting in comparison to conventional linear models. METHODS AND RESULTS The analyses were performed in 15,933 patients included in the Shinken Database (SD) 2004-2014 (n = 22,022) for whom baseline data of blood sampling and ultrasound cardiogram and follow-up data at 2 years were available. Using non-linear models with machine learning software, 118 risk factors and their weighting of risk for all-cause mortality, heart failure (HF), acute coronary syndrome (ACS), ischemic stroke (IS), and intracranial hemorrhage (ICH) were identified, where the top two risk factors were albumin/hemoglobin, left ventricular ejection fraction/history of HF, history of ACS/anti-platelet use, history of IS/deceleration time, and history of ICH/warfarin use. The areas under the curve of the developed models for each event were 0.900, 0.912, 0.879, 0.758, and 0.753, respectively. CONCLUSION Here, we described our experience with the development of models for predicting cardiovascular prognosis by machine learning. Machine learning could identify risk predicting models with good predictive capability and good discrimination of the risk impact.
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Affiliation(s)
- Shinya Suzuki
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
- * E-mail:
| | - Takeshi Yamashita
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | | | - Takuto Arita
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Naoharu Yagi
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Takayuki Otsuka
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Hiroaki Semba
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Hiroto Kano
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Shunsuke Matsuno
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Yuko Kato
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Tokuhisa Uejima
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Yuji Oikawa
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
| | - Minoru Matsuhama
- Department of Cardiovascular Surgery, The Cardiovascular Institute, Tokyo, Japan
| | - Junji Yajima
- Department of Cardiovascular Medicine, The Cardiovascular Institute, Tokyo, Japan
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26
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Kendrick J, Parameswaran V, Ficociello LH, Ofsthun NJ, Davis S, Mullon C, Kossmann RJ, Kalantar-Zadeh K. One-Year Historical Cohort Study of the Phosphate Binder Sucroferric Oxyhydroxide in Patients on Maintenance Hemodialysis. J Ren Nutr 2019; 29:428-437. [PMID: 30679076 PMCID: PMC6642852 DOI: 10.1053/j.jrn.2018.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/11/2018] [Accepted: 11/20/2018] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE The high pill burden of many phosphate binders (PBs) may contribute to increased prevalence of hyperphosphatemia and poor nutritional status observed among patients undergoing maintenance hemodialysis therapy. We examined the real-world effectiveness of sucroferric oxyhydroxide (SO), a PB with low pill burden, in managing serum phosphorus in patients with prevalent hemodialysis over a 1-year period. DESIGN Historical cohort analyses of de-identified electronic medical records. SUBJECTS In-center hemodialysis patients switched from another PB to SO therapy as part of routine care with 12 months of uninterrupted SO prescriptions recorded, and documented serum phosphorus levels were eligible for inclusion. Clinical data were extracted from a pharmacy service, FreseniusRx, database and Fresenius Kidney Care clinical data warehouse. MAIN OUTCOME MEASURES Comparisons were made between the 91-day period before SO initiation (i.e., baseline) and the 4 consecutive 91-day intervals of SO treatment (Q1-Q4). Clinical measures included achievement of target phosphorus levels (≤5.5 mg/dL) and mean number of PB pills/day. RESULTS Among 530 analyzed patients, the proportion achieving target serum phosphorus levels increased by >100% 1 year after switching to SO therapy, that is, from 17.7% at baseline to 24.5%, 30.5%, 36.4%, and 36.0% at Q1 through Q4, respectively (P < .0001 for all). Reductions in serum phosphorus were observed at all follow-up timepoints (P < .0001), irrespective of baseline PB. From a mean baseline PB pill burden of 8.5 pills/day, patients experienced an average 50% pill burden reduction during SO treatment (P < .0001). Phosphorus-attuned albumin and phosphorus-attuned protein intake (normalized protein catabolic rate) improved significantly after transition to SO (P < .0001). The effectiveness of SO was evident in prespecified subgroups of interest (i.e., black/African-American patients, Hispanic/Latino patients, and women). CONCLUSION Among patients on hemodialysis, switching to SO resulted in a 2-fold greater likelihood of achieving target phosphorus levels while halving daily PB pill burden. Increases in phosphorus-attuned albumin and protein intake suggest improved nutritional status.
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Affiliation(s)
- Jessica Kendrick
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Medicine, Denver Health Medical Center, Denver, Colorado
| | | | | | - Norma J Ofsthun
- Fresenius Medical Care North America, Waltham, Massachusetts
| | - Shannon Davis
- Fresenius Medical Care North America, Waltham, Massachusetts
| | - Claudy Mullon
- Fresenius Medical Care Renal Therapies Group, Waltham, Massachusetts
| | - Robert J Kossmann
- Fresenius Medical Care Renal Therapies Group, Waltham, Massachusetts
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27
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Otero Alonso P, Pérez Fontán M, López Iglesias A, García Falcón T, Rodríguez-Carmona A. High rates of protein intake are associated with an accelerated rate of decline of residual kidney function in incident peritoneal dialysis patients. Nephrol Dial Transplant 2019; 34:1394-1400. [PMID: 30615149 DOI: 10.1093/ndt/gfy393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/26/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Preservation of residual kidney function (RKF) is a relevant objective in peritoneal dialysis (PD) patients. The influence of dietary protein intake (PI) on this variable has not been adequately investigated. METHODS Following an observational design, we studied 336 patients incident on PD, with a minimum follow-up of 6 months. The main study variable was the mean PI [normalized rate of protein nitrogen appearance (nPNA)] during the first 4 months on PD. The main outcome variables were the absolute rate of decline of RKF and the proportion of patients presenting a >50% decay of their RKF during the first year of follow-up. We applied univariate and multivariate strategies of analysis, taking into consideration the main control variables bearing a correlation with nPNA and/or RKF. RESULTS Mean nPNA (first 4 months) was 1.23 ± 0.33 g/kg/day, while the overall rate of decline of RKF was -0.13 ± 0.29 mL/min/month; 69 patients (25.1%) had lost >50% of their initial RKF by the end of the first year. Univariate analysis disclosed consistent associations between the main study variable on one hand and baseline RKF (r = 0.32, P < 0.0005) and its rate of decline (r = -0.23, P < 0.0005) on the other. The latter two variables were also significantly correlated (r = -0.36, P < 0.0005). Multivariate analysis identified mean nPNA as an independent predictor of the rate of decline of RKF [odds ratio 1.09 per 0.10 g/kg/day, 95% confidence interval (CI) 0.99-1.19, P = 0.058] and, in particular, of the probability of losing >50% of the baseline RKF during the first year of treatment (odds ratio 1.15 per 0.10 g/kg/day, 95% CI 1.04-1.27, P = 0.006). CONCLUSION Higher rates of PI during the first months of therapy are associated with a faster decline of RKF among patients incident on PD. Our results underline the convenience of keeping an adequate balance between sufficient protein ingestion, to prevent malnutrition and wasting, and sensible restriction in stable, adequately nourished individuals with rates of intake in the higher range or above-recommended allowances.
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28
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Chang W, Uchida S, Qi P, Zhang W, Wang X, Liu Y, Han Y, Li J, Xu H, Hao J. Decline in serum uric acid predicts higher risk for mortality in peritoneal dialysis patients-a propensity score analysis. J Nephrol 2019; 33:591-599. [PMID: 31321744 DOI: 10.1007/s40620-019-00632-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/13/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The level of serum uric acid (SUA) in treatment follow-up is associated with mortality in peritoneal dialysis (PD) patients, but it remains unknown if the longitudinal change in SUA affects mortality. METHODS 309 PD patients who were not using UA-lowering agents were enrolled. The longitudinal change in SUA was estimated by comparing the values between the run-in and follow-up periods. Based the calculated values, the patients were divided into SUA decliner and SUA non-decliner. A propensity score (PS) was calculated using the parameters measured in run-in period. After PS matching, the time-to-event analysis was performed for all-cause death. RESULTS After PS matching, 86 patients of each group were left. A higher mortality of 19/86 existed in SUA decliner compared with SUA non-decliner which is 3/86 (p < 0.001). Kaplan-Meier analysis in sub-cohort showed worse survival in the SUA decliner. Standard and stratified Cox regression analysis both showed SUA decline to be an independent risk factor for all-cause death in PD patients. CONCLUSIONS The decline in SUA in the follow-up may predict the all-cause mortality of PD patients, the reason of which may result from reducing scavenging effects of SUA or may reflect general condition. More studies need to be done.
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Affiliation(s)
- Wenxiu Chang
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China.
| | - Shunya Uchida
- Department of Internal Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | - PingPing Qi
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Wenyu Zhang
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Xichao Wang
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Ying Liu
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Yingying Han
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Jinping Li
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Haiyan Xu
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
| | - Jie Hao
- Department of Nephrology, Tianjin First Center Hospital, No. 24 Fukang Road, Nankai District, Tianjin, 300192, China
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29
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Yamagata K, Hoshino J, Sugiyama H, Hanafusa N, Shibagaki Y, Komatsu Y, Konta T, Fujii N, Kanda E, Sofue T, Ishizuka K, Kitagawa M, Kono K, Hinamoto N, Miyai T, Koike K, Toda S, Hasegawa J, Yamanouchi M, Yoshimura R, Ishii R, Goto S, Kawarazaki H, Takase K, Taki F, Matsumura M, Raita Y, Sakurai S, Shimizu T, Yamanoto S, Kawaguchi T, Oguchi H, Tsujita M, Yazawa M, Uchida A, Ando Y, Kaneko S, Matsunaga A, Harada T, Ito O, Kohzuki M. Clinical practice guideline for renal rehabilitation: systematic reviews and recommendations of exercise therapies in patients with kidney diseases. RENAL REPLACEMENT THERAPY 2019. [DOI: 10.1186/s41100-019-0209-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Villain C, Ecochard R, Bouchet JL, Daugas E, Drueke TB, Hannedouche T, Jean G, London G, Roth H, Fouque D. Relative prognostic impact of nutrition, anaemia, bone metabolism and cardiovascular comorbidities in elderly haemodialysis patients. Nephrol Dial Transplant 2019; 34:848-858. [PMID: 30202988 DOI: 10.1093/ndt/gfy272] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The prognostic impact of nutrition and chronic kidney disease (CKD) complications has already been described in elderly haemodialysis patients but their relative weights on risk of death remain uncertain. Using structural equation models (SEMs), we aimed to model a single variable for nutrition, each CKD complication and cardiovascular comorbidities to compare their relative impact on elderly haemodialysis patients' survival. METHODS This prospective study recruited 3165 incident haemodialysis patients ≥75 years of age from 178 French dialysis units. Using SEMs, the following variables were computed: nutritional status, anaemia, mineral and bone disorder and cardiovascular comorbidities. Systolic blood pressure was also used in the analysis. Survival analyses used Poisson models. RESULTS The population average age was 81.9 years (median follow-up 1.51 years, 35.5% deaths). All variables were significantly associated with mortality by univariate analysis. Nutritional status was the variable most strongly associated with mortality in the multivariate analysis, with a negative prognostic impact of low nutritional markers {incidence rate ratio [IRR] 1.42 per 1 standard deviation [SD] decrement [95% confidence interval (CI) 1.32-1.53]}. The 'cardiovascular comorbidities' variable was the second variable associated with mortality [IRR 1.19 per 1 SD increment (95% CI 1.11-1.27)]. A trend towards low intact parathyroid hormone and high serum calcium and low values of systolic blood pressure were also associated with poor survival. The variable 'anaemia' was not associated with survival. CONCLUSIONS These findings should help physicians prioritize care in elderly haemodialysis patients with CKD complications, with special focus on nutritional status.
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Affiliation(s)
- Cédric Villain
- Université Versailles-Saint-Quentin, INSERM U-1018, CESP équipe 5, EpRec, Service de Néphrologie, Hôpital Ambroise Paré, APHP, Boulogne-Billancourt, France
| | - René Ecochard
- Université Lyon 1, CNRS, UMR5558, Laboratoire de Biométrie et Biologie Evolutive, Equipe Biostatistique-Santé, Service de Biostatistique et Bioinformatique, Hospices Civils de Lyon, Lyon, France
| | - Jean-Louis Bouchet
- Centre de Traitement des Maladies Rénales Saint-Augustin, Bordeaux, France
| | - Eric Daugas
- Service de Néphrologie, Hôpital Bichat, APHP, INSERM U1149, Université Paris Diderot, Paris, France
| | - Tilman B Drueke
- INSERM U-1018, CESP équipe 5, EpRec, Hôpital Paul Brousse, Villejuif, France
| | - Thierry Hannedouche
- Service de Néphrologie-Hémodialyse, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Gérard London
- Service de Néphrologie, Hôpital Manhes, Fleury-Merogis, France
| | - Hubert Roth
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Centre Hospitalo-Universitaire des Alpes, INSERM U1055, Laboratoire de Bioénergétique Fondamentale et Appliquée, Université Grenoble-Alpes, Grenoble, France
| | - Denis Fouque
- Univ Lyon, UCBL, INSERM CarMeN, CENS, Service de Néphrologie-Nutrition-Dialyse, Centre Hospitalier Lyon Sud, Pierre, Bénite, France
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A new nutritional risk index for predicting mortality in hemodialysis patients: Nationwide cohort study. PLoS One 2019; 14:e0214524. [PMID: 30921398 PMCID: PMC6438476 DOI: 10.1371/journal.pone.0214524] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 03/14/2019] [Indexed: 12/30/2022] Open
Abstract
Background Protein energy wasting (PEW) is a risk factor for death. However, the cutoff vales for PEW are not optimized for early identification of hemodialysis patients with malnutrition. We evaluated the prognosis of Japanese maintenance hemodialysis patients using nutritional indices optimized for them. Materials and methods We analyzed data from a nation-wide prospective cohort study of the Japanese Society for Dialysis Therapy Renal Data Registry to develop and validate a nutritional risk index (n = 48349, 48349, respectively). The association of nutritional factors with one-year death was tested using Cox proportional hazards models. Their cutoff levels were determined from the hazard ratios or receiver operating characteristic curves. Then, risk index was developed using scoring models. Results Male was 61.4%; average age, 65.7±12.2 years; and diabetes mellitus, 32.8%. Four clinical factors were retained in the final model: low BMI (<20kg/m2), yes = 3, no = 0; low serum albumin level (young <3.7g/dL; old <3.5g/dL), yes = 4, no = 0; abnormal serum total cholesterol level, low (<130mg/dL) = 1, high (220≥mg/dL) = 2, no = 0; low serum creatinine level (young female, <9.7mg/dL; old female, <8.0mg/dL; young male, <11.6mg/dL; old male, <9.7mg/dL), yes = 4, no = 0. In the validation dataset, medium- and high-risk groups (total score 8 to 10; 11 or more) showed a higher risk of all-cause death than the low-risk group (0 to 7): medium-risk group (10.5%), hazard ratio adjusted for baseline characteristics 1.96 (95% confidence interval 1.77, 2.16); high-risk group (8.2%), 3.91 (3.57, 4.29). The medium- and high-risk groups also showed a higher risk of cardiovascular disease- and infection-caused deaths than the low-risk group. Conclusion We developed a new nutritional risk index for hemodialysis patients, which may detect patients with malnutrition with a high-risk of death.
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Dratch A, Kleine CE, Streja E, Soohoo M, Park C, Hsiung JT, Rhee CM, Obi Y, Molnar MZ, Kovesdy CP, Kalantar-Zadeh K. Mean Corpuscular Volume and Mortality in Incident Hemodialysis Patients. Nephron Clin Pract 2019; 141:188-200. [PMID: 30625478 DOI: 10.1159/000495726] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/22/2018] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND/AIMS Anemia is common in patients with advanced chronic kidney disease (CKD). A proportion of patients present with macrocytic anemia, manifested by elevated mean corpuscular volume (MCV), which has been associated with worse outcomes in CKD patients. However, it is unknown whether elevated MCV is associated with higher mortality risk in incident hemodialysis (HD) patients. METHODS This retrospective observational cohort study examined all-cause, cardiovascular, and infectious mortality associations with both baseline and time-varying MCV in 109,501 incident HD patients using Cox proportional hazards models with 3 levels of hierarchical multivariable adjustment. Odds ratios of high versus low baseline MCV were evaluated using logistic regression. RESULTS The mean age of patients was 65 ± 15 (standard deviation) years and the cohort was 44% female, 58% diabetic, and 31% African American. Higher MCV was associated with older age, female sex, non-Hispanic White race-ethnicity, alcohol consumption, and having a decreased albumin or protein intake. Patients with higher MCV levels (> 98 fL) had a higher all-cause, cardiovascular, and infectious mortality risk in both baseline and time varying models, and across all levels of adjustment. In the fully adjusted models, compared to a reference of MCV 92-< 94 fL, patients with a baseline MCV > 100+ fL had a 28% higher risk of all-cause mortality (hazard ratio [HR] 1.28, 95% CI 1.22-1.34), 27% higher risk of cardiovascular mortality (HR 1.27, 95% CI 1.18-1.36), and 18% higher risk of infectious mortality (HR 1.18, 95% CI 1.02-1.38). Associations of higher MCV with these adverse outcomes persisted across all examined subgroups of clinical characteristics. CONCLUSIONS Higher MCV was associated with higher all-cause, cardiovascular, and infectious mortality in HD patients. Further investigation is necessary to understand the underlying nature of the observed association.
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Affiliation(s)
- Alissa Dratch
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA.,Fielding School of Public Health at UCLA, Los Angeles, California, USA
| | - Carola-Ellen Kleine
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA.,Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, California, USA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA.,Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, California, USA
| | - Melissa Soohoo
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
| | - Christina Park
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
| | - Jui-Ting Hsiung
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
| | - Connie M Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
| | - Miklos Z Molnar
- Division of Transplant Surgery, Methodist University Hospital Transplant Institute, Memphis, Tennessee, USA.,Department of Surgery, University of Tennessee Health Science Center, Memphis, Tennessee, USA.,Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee, USA.,Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Csaba P Kovesdy
- Division of Nephrology, University of Tennessee Health Science Center, Memphis, Tennessee, USA.,Division of Nephrology, Memphis Veterans Affairs Medical Center, Memphis, Tennessee, USA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA, .,Fielding School of Public Health at UCLA, Los Angeles, California, USA, .,Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, California, USA,
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Hur I, Lee Y, Kalantar-Zadeh K, Obi Y. Individualized Hemodialysis Treatment: A Perspective on Residual Kidney Function and Precision Medicine in Nephrology. Cardiorenal Med 2018; 9:69-82. [DOI: 10.1159/000494808] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/20/2018] [Indexed: 11/19/2022] Open
Abstract
Background: Residual kidney function (RKF) is often expected to inevitably and rapidly decline among hemodialysis patients and, hence, has been inadvertently ignored in clinical practice. The importance of RKF has been revisited in some recent studies. Given that patients with end-stage renal disease now tend to initiate maintenance hemodialysis therapy with higher RKF levels, there seem to be important opportunities for incremental hemodialysis by individualizing the dose and frequency according to their RKF levels. This approach is realigned with precision medicine and patient-centeredness. Summary: In this article, we first review the available methods to estimate RKF among hemodialysis patients. We then discuss the importance of maintaining and monitoring RKF levels based on a variety of clinical aspects, including volume overload, blood pressure control, mineral and bone metabolism, nutrition, and patient survival. We also review several potential measures to protect RKF: the use of high-flux and biocompatible membranes, the use of ultrapure dialysate, the incorporation of hemodiafiltration, incremental hemodialysis, and a low-protein diet, as well as general care such as avoiding nephrotoxic events, maintaining appropriate blood pressure, and better control of mineral and bone disorder parameters. Key Message: Individualized hemodialysis regimens may maintain RKF, lead to a better quality of life without compromising long-term survival, and ensure precision medicine and patient-centeredness in nephrology practice.
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Piccoli GB, Nielsen L, Gendrot L, Fois A, Cataldo E, Cabiddu G. Prescribing Hemodialysis or Hemodiafiltration: When One Size Does Not Fit All the Proposal of a Personalized Approach Based on Comorbidity and Nutritional Status. J Clin Med 2018; 7:E331. [PMID: 30297628 PMCID: PMC6210736 DOI: 10.3390/jcm7100331] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/26/2018] [Accepted: 09/26/2018] [Indexed: 12/14/2022] Open
Abstract
There is no simple way to prescribe hemodialysis. Changes in the dialysis population, improvements in dialysis techniques, and different attitudes towards the initiation of dialysis have influenced treatment goals and, consequently, dialysis prescription. However, in clinical practice prescription of dialysis still often follows a "one size fits all" rule, and there is no agreed distinction between treatment goals for the younger, lower-risk population, and for older, high comorbidity patients. In the younger dialysis population, efficiency is our main goal, as assessed by the demonstrated close relationship between depuration (tested by kinetic adequacy) and survival. In the ageing dialysis population, tolerance is probably a better objective: "good dialysis" should allow the patient to attain a stable metabolic balance with minimal dialysis-related morbidity. We would like therefore to open the discussion on a personalized approach to dialysis prescription, focused on efficiency in younger patients and on tolerance in older ones, based on life expectancy, comorbidity, residual kidney function, and nutritional status, with particular attention placed on elderly, high-comorbidity populations, such as the ones presently treated in most European centers. Prescription of dialysis includes reaching decisions on the following elements: dialysis modality (hemodialysis (HD) or hemodiafiltration (HDF)); type of membrane (permeability, surface); and the frequency and duration of sessions. Blood and dialysate flow, anticoagulation, and reinfusion (in HDF) are also briefly discussed. The approach described in this concept paper was developed considering the following items: nutritional markers and integrated scores (albumin, pre-albumin, cholesterol; body size, Body Mass Index (BMI), Malnutrition Inflammation Score (MIS), and Subjective Global Assessment (SGA)); life expectancy (age, comorbidity (Charlson Index), and dialysis vintage); kinetic goals (Kt/V, normalized protein catabolic rate (n-PCR), calcium phosphate, parathyroid hormone (PTH), beta-2 microglobulin); technical aspects including vascular access (fistula versus catheter, degree of functionality); residual kidney function and weight gain; and dialysis tolerance (intradialytic hypotension, post-dialysis fatigue, and subjective evaluation of the effect of dialysis on quality of life). In the era of personalized medicine, we hope the approach described in this concept paper, which requires validation but has the merit of providing innovation, may be a first step towards raising attention on this issue and will be of help in guiding dialysis choices that exploit the extraordinary potential of the present dialysis "menu".
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Affiliation(s)
- Giorgina Barbara Piccoli
- Néphrologie Centre Hospitalier Le Mans, Avenue Roubillard 196, 72000 Le Mans, France.
- Dipartimento di Scienze Cliniche e Biologiche, University of Torino, Ospedale san Luigi, Regione Gonzole, 10100 Torino, Italy.
| | - Louise Nielsen
- Néphrologie Centre Hospitalier Le Mans, Avenue Roubillard 196, 72000 Le Mans, France.
| | - Lurilyn Gendrot
- Néphrologie Centre Hospitalier Le Mans, Avenue Roubillard 196, 72000 Le Mans, France.
| | - Antioco Fois
- Néphrologie Centre Hospitalier Le Mans, Avenue Roubillard 196, 72000 Le Mans, France.
| | - Emanuela Cataldo
- Néphrologie Centre Hospitalier Le Mans, Avenue Roubillard 196, 72000 Le Mans, France.
- Nefrologia, Università Aldo Moro, Piazza Umberto I, 70121 Bari, Italy.
| | - Gianfranca Cabiddu
- Nefrologia Ospedale Brotzu, Piazzale Alessandro Ricchi, 1, 09134 Cagliari, Italy.
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Tucker JK. A Missed Connection: Dietary Protein Intake and Mortality in Hemodialysis. Am J Med Sci 2018; 356:217-218. [PMID: 30286816 DOI: 10.1016/j.amjms.2018.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/09/2018] [Accepted: 07/09/2018] [Indexed: 10/28/2022]
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36
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Serum uric acid and albumin are affected by different variables in Parkinson's disease. Neurol Sci 2018; 40:187-188. [PMID: 30140989 DOI: 10.1007/s10072-018-3548-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
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37
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Kalantar-Zadeh K, Parameswaran V, Ficociello LH, Anderson L, Ofsthun NJ, Kwoh C, Mullon C, Kossmann RJ, Coyne DW. Real-World Scenario Improvements in Serum Phosphorus Levels and Pill Burden in Peritoneal Dialysis Patients Treated with Sucroferric Oxyhydroxide. Am J Nephrol 2018; 47:153-161. [PMID: 29514139 PMCID: PMC5906196 DOI: 10.1159/000487856] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/20/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND A database analysis was conducted to assess the effectiveness of sucroferric oxyhydroxide (SO) on lowering serum phosphorus and phosphate binder (PB) pill burden among adult peritoneal dialysis (PD) patients prescribed SO as part of routine care. METHODS Adult PD patients (n = 258) prescribed SO through a renal pharmacy service were analyzed. Baseline was 3 months before SO prescription. SO-treated follow-up was for 6 months or until either a new PB was prescribed, SO was not refilled, PD modality changed, or patient was discharged. In-range serum phosphorus was defined as ≤5.5 mg/dL. RESULTS At baseline, mean serum phosphorus was 6.59 mg/dL with 10 prescribed PB pills/day. The proportion of patients achieving in-range serum phosphorus increased by 72% from baseline to month 6. Prescribed PB pills/day decreased by 57% (10 at baseline to 4.3 at SO follow-up, p < 0.0001). The mean length of SO follow-up was 5.1 months; SO follow-up ended for 38, 27, and 50 patients at months 4, 5, and 6, respectively, due to no further PB fills, and for 10, 11, and 4 patients at months 4, 5, and 6, respectively, due to another PB prescribed. In patients with baseline serum phosphorus >5.5 mg/dL who achieved in-range serum phosphorus during SO follow-up for ≥1 quarter, a notable improvement in serum phosphorus (6.54 to 5.10 mg/dL, p < 0.0001) was observed, and there was a 53% reduction in PB pill burden (9.9 to 4.7, p < 0.0001). CONCLUSION Among PD patients prescribed SO as part of routine care, improvements in serum phosphorus control and >50% reduction in PB pills/day were observed.
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Affiliation(s)
| | | | | | - Ludmila Anderson
- Fresenius Medical Care North America, Waltham, Massachusetts, USA
| | - Norma J. Ofsthun
- Fresenius Medical Care North America, Waltham, Massachusetts, USA
| | - Christopher Kwoh
- The Kidney Institute, Houston, Texas, USA
- Baylor College of Medicine, Houston, Texas, USA
| | - Claudy Mullon
- Fresenius Medical Care North America, Waltham, Massachusetts, USA
| | | | - Daniel W. Coyne
- Washington University School of Medicine, St. Louis, Missouri, USA
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38
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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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39
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Kistler BM, Benner D, Burrowes JD, Campbell KL, Fouque D, Garibotto G, Kopple JD, Kovesdy CP, Rhee CM, Steiber A, Stenvinkel P, ter Wee P, Teta D, Wang AY, Kalantar-Zadeh K. Eating During Hemodialysis Treatment: A Consensus Statement From the International Society of Renal Nutrition and Metabolism. J Ren Nutr 2018; 28:4-12. [DOI: 10.1053/j.jrn.2017.10.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/22/2017] [Indexed: 12/19/2022] Open
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40
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Kanno Y, Kanda E. Comparison of accuracy between pre-hemodialysis and post-hemodialysis levels of nutritional factors for prediction of mortality in hemodialysis patients. Clin Nutr 2017; 38:383-388. [PMID: 29295748 DOI: 10.1016/j.clnu.2017.12.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/19/2017] [Accepted: 12/11/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND The nutritional status of hemodialysis (HD) patients is usually assessed using pre-HD laboratory data. However, it remains unclear whether the most diluted laboratory value is appropriate for assessment. We compared the pre-HD and post-HD laboratory data for their accuracy in predicting mortality. METHODS Maintenance HD patients (n = 96 700; men, 61.5%) were enrolled. The outcome events were one-year and five-year mortalities. Their laboratory data included body mass index (BMI), and serum albumin, creatinine, and blood urea nitrogen (BUN) levels. Bootstrap resampling was used to compare the accuracy in predicting the mortalities between pre-HD and post-HD levels using area under receiver operating characteristic curves (AUCs) adjusted for baseline characteristics. RESULTS The mean age ± standard deviation was 65.7 ± 12.2 years, and the vintage was 8.3 ± 6.7 years. The numbers of patients who died were 6442 (6.7%) in one year and 30 965 (32.0%) in five years. The adjusted AUCs for predicting the one-year and five-year mortalities showed that the pre-HD albumin and creatinine levels and the pre-HD BMI and BUN levels were more accurate than the post-HD levels (each p < 0.0001). The pre-HD albumin and creatinine levels showed the highest adjusted AUC for predicting one-year mortality [0.613 (95% CI 0.598, 0.629)] and five-year mortality [0.591 (95% CI 0.586, 0.595)], respectively. CONCLUSIONS Pre-HD albumin and creatinine levels are more accurate than post-HD levels and other nutritional indices in predicting one-year and five-year mortalities in HD patients.
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Hosojima M, Shimada H, Obi Y, Kuwahara S, Kaseda R, Kabasawa H, Kondo H, Fujii M, Watanabe R, Suzuki Y, Kadowaki M, Miyazaki S, Saito A. A Randomized, Double-Blind, Crossover Pilot Trial of Rice Endosperm Protein Supplementation in Maintenance Hemodialysis Patients. Sci Rep 2017; 7:18003. [PMID: 29269937 PMCID: PMC5740176 DOI: 10.1038/s41598-017-18340-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 12/11/2017] [Indexed: 12/16/2022] Open
Abstract
In maintenance hemodialysis (MHD) patients, low protein intake is associated with protein-energy wasting, a risk factor that affects outcome. However, increased protein intake may lead to hyperphosphatemia and hyperkalemia, which are also mortality risk factors. Here, we evaluated the safety and effects of purified rice endosperm protein (REP), which contains less phosphorus and potassium than soy and casein proteins, as a supplemental protein source for MHD patients. This randomized, double-blind, placebo-controlled, crossover pilot study of REP supplementation (5 g/day × 4 weeks) was carried out in 50 Japanese adult MHD patients (1 dropped out); the primary outcome was the change in the urea kinetic-based normalized protein catabolic rate (nPCR), an indicator of protein intake in MHD patients. Intention-to-treat analyses of 24 patients in the REP-first group and 25 in the placebo-first group showed that REP supplementation increased nPCR significantly by 0.07 g/kg/day (95% confidence interval, 0.03–0.11), whereas changes in serum phosphorus and potassium concentrations were not different from the placebo. REP supplementation did not show a significant effect on other nutritional or metabolic parameters and no specific complications. In conclusion, purified REP with efficient bioavailability may be safe and useful for dietary supplementation in MHD patients.
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Affiliation(s)
- Michihiro Hosojima
- Department of Clinical Nutrition Science, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.,Kidney Center, Shinrakuen Hospital, Niigata, 950-2087, Japan
| | - Hisaki Shimada
- Kidney Center, Shinrakuen Hospital, Niigata, 950-2087, Japan
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research & Epidemiology, Division of Nephrology & Hypertension, University of California, Irvine, CA, 92868, USA.,Department of Nephrology, Osaka Graduate School of Medicine, Osaka, 565-0871, Japan
| | - Shoji Kuwahara
- Department of Applied Molecular Medicine, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Ryohei Kaseda
- Division of Clinical Nephrology and Rheumatology, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Hideyuki Kabasawa
- Department of Clinical Nutrition Science, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Hazuki Kondo
- Rice Research Center, Kameda Seika Co. Ltd., Niigata, 950-0198, Japan
| | - Mikio Fujii
- Rice Research Center, Kameda Seika Co. Ltd., Niigata, 950-0198, Japan
| | - Reiko Watanabe
- Department of Health and Nutrition, University of Niigata Prefecture, Niigata, 950-8680, Japan
| | - Yoshiki Suzuki
- Health Administration Center, Niigata University, Niigata, 950-2181, Japan
| | - Motoni Kadowaki
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | | | - Akihiko Saito
- Department of Applied Molecular Medicine, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.
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42
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Benner D, Brunelli SM, Brosch B, Wheeler J, Nissenson AR. Effects of Oral Nutritional Supplements on Mortality, Missed Dialysis Treatments, and Nutritional Markers in Hemodialysis Patients. J Ren Nutr 2017; 28:191-196. [PMID: 29221626 DOI: 10.1053/j.jrn.2017.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/13/2017] [Accepted: 10/16/2017] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Protein-energy wasting is common in end-stage renal disease patients undergoing dialysis and is strongly associated with mortality and adverse outcomes. Intradialytic oral nutritional supplements (ONS) reduce risk of mortality in these patients. Large studies characterizing the impact of ONS on other outcomes are lacking. We assessed the associations between administration of ONS and clinical and nutritional outcomes. DESIGN Retrospective evaluation of a pilot program providing ONS to patients at a large dialysis organization in the United States. The pilot program provided ONS to in-center hemodialysis patients with serum albumin ≤3.5 g/dL at 408 facilities. SUBJECTS ONS patients were compared to matched controls with serum albumin ≤3.5 g/dL, identified from facilities not participating in the ONS program (n = 3,374 per group). INTERVENTION Receipt of ONS. MAIN OUTCOME MEASURES Death, missed dialysis treatments, hospitalizations, serum albumin, normalized protein catabolic rate, and postdialysis body weight were abstracted from large dialysis organization electronic medical records. RESULTS There was a 69% reduction in deaths (hazard ratio = 0.31; 95% confidence interval = 0.25-0.39), and 33% fewer missed dialysis treatments (incidence rate ratio = 0.77; 95% confidence interval = 0.73-0.82) among ONS patients compared to controls (P < .001 for both). The effects of ONS on nutritional indices were mixed: serum albumin was lower, whereas normalized protein catabolic rate values, a surrogate for dietary protein intake, and postdialysis body weights were higher for ONS patients compared to controls during follow-up. CONCLUSIONS Our evaluation confirmed the beneficial effects of ONS in reducing mortality and improving some indices of nutritional status for hypoalbuminemic hemodialysis patients. We also report the novel finding that ONS can reduce the number of missed dialysis treatments. These results support the use of intradialytic ONS as an effective intervention to improve the outcomes in hemodialysis patients with low serum albumin.
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Affiliation(s)
| | | | | | | | - Allen R Nissenson
- DaVita Inc, Denver, Colorado; David Geffen School of Medicine, University of California, Los Angeles, California
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43
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Wang M, Obi Y, Streja E, Rhee CM, Lau WL, Chen J, Hao C, Hamano T, Kovesdy CP, Kalantar-Zadeh K. Association of Parameters of Mineral Bone Disorder with Mortality in Patients on Hemodialysis according to Level of Residual Kidney Function. Clin J Am Soc Nephrol 2017; 12:1118-1127. [PMID: 28487345 PMCID: PMC5498357 DOI: 10.2215/cjn.11931116] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 04/04/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES The relationship between mineral and bone disorders and survival according to residual kidney function status has not been previously studied in patients on hemodialysis. We hypothesized that residual kidney function, defined by renal urea clearance, modifies the association between mineral and bone disorder parameters and mortality. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS The associations of serum phosphorus, albumin-corrected calcium, intact parathyroid hormone, and alkaline phosphatase with all-cause mortality were examined across three strata (<1.5, 1.5 to <3.0, and ≥3.0 ml/min per 1.73 m2) of baseline residual renal urea clearance using Cox models adjusted for clinical characteristics and laboratory measurements in 35,114 incident hemodialysis patients from a large United States dialysis organization over the period of 2007-2011. RESULTS A total of 8102 (23%) patients died during the median follow-up of 1.3 years (interquartile range, 0.6-2.3 years). There was an incremental mortality risk across higher serum phosphorus concentrations, which was pronounced among patients with higher residual renal urea clearance (Pinteraction=0.001). Lower concentrations of serum intact parathyroid hormone were associated with higher mortality among patients with low residual renal urea clearance (i.e., <1.5 ml/min per 1.73 m2), whereas higher concentrations showed a higher mortality risk among patients with greater residual renal urea clearance (i.e., ≥1.5 ml/min per 1.73 m2; Pinteraction<0.001). Higher serum corrected total calcium and higher alkaline phosphatase concentrations consistently showed higher mortality risk (Ptrend<0.001 for both) irrespective of residual renal urea clearance strata (Pinteraction=0.34 and Pinteraction=0.53, respectively). CONCLUSIONS Residual kidney function modified the mortality risk associated with serum phosphorus and intact parathyroid hormone among incident hemodialysis patients. Future studies are needed to examine whether taking account for residual kidney function into the assessment of mortality risk associated with serum phosphorus and intact parathyroid hormone improves patient management and clinical outcomes in the hemodialysis population.
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Affiliation(s)
- Mengjing Wang
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yoshitsugu Obi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
| | - Connie M. Rhee
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
| | - Wei Ling Lau
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
| | - Jing Chen
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Chuanming Hao
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Takayuki Hamano
- Department of Comprehensive Kidney Disease Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Csaba P. Kovesdy
- Division of Nephrology, University of Tennessee Health Science Center, Memphis, Tennessee
- Nephrology Section, Memphis Veterans Affairs Medical Center, Memphis, Tennessee
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, California
- Department of Epidemiology, Fielding School of Public Health at University of California, Los Angeles, Los Angeles, California; and
- Nephrology Section, Tibor Rubin Veterans Affairs Medical Center, Long Beach, California
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