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Spahia N, Rroji M, Idrizi A, Spasovski G, Barbullushi M. Sodium and water dynamics in the progression of chronic kidney disease: mechanisms and clinical significance. Int Urol Nephrol 2024; 56:1953-1963. [PMID: 38200365 DOI: 10.1007/s11255-023-03903-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/01/2023] [Indexed: 01/12/2024]
Abstract
AIM Lifestyle modifications can postpone the progression of chronic kidney disease toward its terminal stage. This mini-review aims to explore the impact of salt and water intake on the progression of chronic kidney disease (CKD) and provide insights into the optimal consumption levels to preserve the glomerular filtration rate. METHODS We reviewed relevant literature to examine the association between salt and water consumption and CKD progression. Our analysis includes discussions on the pathophysiology, findings from clinical trials, and recommended intake guidelines. RESULTS Sodium intake, often linked to cardiovascular risk and CKD progression, has shown a complex J-shaped association in some studies, leading to uncertainty about the ideal salt intake level. Sodium and fluid retention are key factors contributing to hypertension, a well-established risk factor for CKD progression. Low-sodium diets have demonstrated promise in reducing blood pressure and enhancing the effects of renin-angiotensin-aldosterone system inhibitors in non-dialysis CKD patients. However, a debate persists regarding the independent effect of salt restriction on CKD progression. Despite medical recommendations, salt consumption remains high among CKD patients. Additionally, the role of water consumption in CKD remains controversial despite its established benefits for CKD prevention in the general population. CONCLUSION Lifestyle modifications involving salt and water intake can influence the progression of CKD. While low-sodium diets have shown potential for mitigating hypertension and proteinuria in non-dialysis CKD patients, their independent impact on CKD progression warrants further investigation. The role of water consumption in CKD remains uncertain, and there is a need for additional research in this area. Clinicians should consider individualized dietary recommendations for CKD patients to help preserve the glomerular filtration rate and improve overall outcomes.
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Affiliation(s)
- Nereida Spahia
- Department of Nephrology, University Hospital Center "Mother Teresa", Tirana, Albania.
| | - Merita Rroji
- Department of Nephrology, University Hospital Center "Mother Teresa", Tirana, Albania
| | - Alma Idrizi
- Department of Nephrology, University Hospital Center "Mother Teresa", Tirana, Albania
| | - Goce Spasovski
- Department of Nephrology, Medical Faculty, University Sts. Cyril and Methodius, Skopje, North Macedonia
| | - Myftar Barbullushi
- Department of Nephrology, University Hospital Center "Mother Teresa", Tirana, Albania
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TASNIM TASNIM, SUNARSIH. Analysis of impaired kidney function in the community around the Morosi nickel mines. J Public Health Afr 2023; 14:2700. [PMID: 37859934 PMCID: PMC10583235 DOI: 10.4081/jphia.2023.2700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
Preliminary studies showed that almost 50% of the people around the Morosi nickel mining industry had very high creatinine levels (26 mmol/l). High creatinine levels indicate impaired kidney function. This study aims to analyze the determinants of high creatinine levels in the urine of people around the Morosi nickel mines. There were 61 participants who were interviewed and urine samples were taken to test their creatinine levels. High levels of creatinine indicate kidney disorders. Measurement of creatinine levels used urine reagent strips 13G. Then it was connected between the condition of water sources, houses, solid and liquid waste management with the participants' creatinine levels with the multinomial regression statistical test. The house condition and liquid waste management had significant association with creatinine levels (P=0.005 and P=0.026, respectively). More than 80% of people lived in houses with good condition and had very low creatinine levels (≤0.9 mmol/l). Most of them had done appropriate liquid waste management (63.9%). However, water sources and solid waste management had no association with creatinine levels (P=0.195 and P=0.130, respectively). The majority of them had used good water sources such as piped and gallon water (80.3%). There were only 19.7% of them who used dug wells and 60.7% who throw their solid waste into the river or burn it. This study concludes that house condition and liquid waste management determine of the high urine-creatinine levels of people leaving around the Morosi Nickel Mining Industries.
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Affiliation(s)
- TASNIM TASNIM
- Public Health Department, Faculty of Health Sciences, Mandala Waluya University, Kendari, Sulawesi Tenggara, Indonesia
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O'Callaghan CA, Camidge C, Thomas R, Reschen ME, Maycock AJ, Lasserson DS, Fox RA, Thomas NP, Shine B, James T. Evaluation of a Simple Low-cost Intervention to Empower People with CKD to Reduce Their Dietary Salt Intake: OxCKD1, a Multicenter Randomized Controlled Trial. KIDNEY360 2023; 4:890-898. [PMID: 37254243 PMCID: PMC10371291 DOI: 10.34067/kid.0000000000000160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/21/2023] [Indexed: 06/01/2023]
Abstract
Key Points A randomized controlled trial demonstrates that a simple and cheap 1-month intervention empowers people with CKD to lower their dietary salt intake. The effect of the intervention persisted after the intervention finished. Background To evaluate the efficacy of a simple low-cost intervention to empower people with CKD to reduce their dietary salt intake. Methods A randomized controlled trial in primary and secondary care comparing the OxSalt care bundle intervention versus standard care for 1 month. Participants were people with CKD and an eGFR >20 ml/min per 1.73 m2 and were recruited from primary and secondary care. The primary outcome was a reduction in dietary salt intake, as assessed by 24-hour urinary sodium excretion, after 1 month of the intervention. Results Two hundred and one participants were recruited. Dietary salt intake, as assessed from 24-hour urine sodium excretion, fell by 1.9 (±2.9) g/d in the intervention group compared with 0.4 (±2.7) g/d in the control group (P < 0.001). Salt intake was still reduced to a lesser extent over the following year in the intervention group. Conclusions A short, low-cost, easily delivered intervention empowers people with CKD to reduce their dietary salt intake. Trial registration ClinicalTrials.gov NCT01552317 .
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Affiliation(s)
| | - Clare Camidge
- Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Rachel Thomas
- Dietetics Department, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Michael E. Reschen
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | | | - Daniel S. Lasserson
- Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
- Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Robin A. Fox
- Bicester Health Centre, Coker Close, Bicester, Oxfordshire, United Kingdom
| | | | - Brian Shine
- Department of Clinical Biochemistry, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Tim James
- Department of Clinical Biochemistry, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
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Neale EP, Rosario VD, Probst Y, Beck E, Tran TB, Lambert K. Lifestyle Interventions, Kidney Disease Progression, and Quality of Life: A Systematic Review and Meta-analysis. Kidney Med 2023; 5:100643. [PMID: 37235039 PMCID: PMC10205767 DOI: 10.1016/j.xkme.2023.100643] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
Rationale & Objective Poor dietary patterns and low physical activity levels are important lifestyle-related factors that contribute to negative health outcomes in individuals with chronic kidney disease (CKD). Previous systematic reviews have not explicitly focused on these lifestyle factors, nor undertaken meta-analyses of any effects. We aimed to evaluate the effect of lifestyle interventions (such as diet, exercise, and other lifestyle-related interventions) on the risk factors for and progression of CKD and the quality of life. Study Design Systematic review and meta-analysis. Setting & Study Populations Individuals aged 16 years or older with CKD stages 1 to 5 not requiring kidney replacement therapy. Selection Criteria for Studies Randomized controlled trials of interventions. Data Extraction Kidney function, albuminuria, creatinine, systolic blood pressure, diastolic blood pressure, body weight, glucose control, and quality of life. Analytical Approach A random-effects meta-analysis with evidence certainty assessed using GRADE. Results Seventy-eight records describing 68 studies were included. Twenty-four studies (35%) were dietary interventions, 23 (34%) exercise, 9 (13%) behavioral, 1 (2%) hydration, and 11 (16%) multiple component. Lifestyle interventions resulted in significant improvements in creatinine (weighted mean difference [WMD], -0.43 mg/dL; 95% CI, -0.74 to -0.11; P = 0.008); 24-hour albuminuria (WMD, -53 mg/24 h; 95% CI, -56 to -50; P < 0.001); systolic blood pressure (WMD, -4.5 mm Hg; 95% CI, -6.7 to -2.4; P < 0.001); diastolic blood pressure (WMD, -2.2 mm Hg; 95% CI, -3.7 to -0.8; P = 0.003); and body weight (WMD, -1.1 kg; 95% CI, -2.0 to -0.1; P = 0.025). Lifestyle interventions did not result in significant changes in the estimated glomerular filtration rate (0.9 mL/min/1.73 m2; 95% CI, -0.6 to 2.3; P = 0.251). However, narrative synthesis indicated that lifestyle intervention resulted in improvements in the quality of life. Limitations Certainty of the evidence was rated very low for most outcomes, primarily owing to the risk of bias and inconsistency. No meta-analysis was possible for quality-of-life outcomes because of variations in measurement tools. Conclusions Lifestyle interventions seem to positively affect some risk factors for progression of CKD and quality of life.
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Affiliation(s)
| | | | | | | | | | - Kelly Lambert
- Address for Correspondence: Kelly Lambert, PhD, School of Medical, Indigenous and Health Science, University of Wollongong, Northfields Ave, Wollongong, NSW, 2522, Australia.
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Yu Y, Wang P, Ren Z, Xue Y, Jia Y, Wang W, Liu M, Pan K, Xiao L, Ji D, Wang X. A low-salt diet with candesartan administration is associated with acute kidney injury in nephritis by increasing nitric oxide. Biomed Pharmacother 2023; 161:114484. [PMID: 36921530 DOI: 10.1016/j.biopha.2023.114484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023] Open
Abstract
A low-salt diet may activate the renin-angiotensin-aldosterone system (RAAS) and is often applied simultaneously with RAAS inhibitors, especially for treatment of proteinuric nephritis. To explore the effect of a low-salt diet combined with angiotensin receptor blockers (ARB) on kidney function, the proteinuric nephritis model was induced by single intravenous injection of doxorubicin, and then the SD rats were administrated with candesartan intraperitoneal injection and fed with different salt diets. Rats with low-salt plus candesartan, not either alone, experienced acute kidney injury (AKI) at day 7 and could not self-restore when extending the experiment time from 7 days to 21 days, unless switching low-salt to normal-salt. Among three nitric oxide synthetases (NOS), endothelial NOS (eNOS) was obviously elevated and PI3K-Akt-eNOS signal pathway was activated. NG-Nitro-L-Arginine Methyl Ester (L-NAME), an eNOS inhibitor, reversed the decreased blood pressure and recovered the kidney dysfunction induced by low-salt with candesartan. The increased TUNEL-positive cells, Bax/Bcl-2 and cleaved-caspase3 protein abundance was ameliorated by L-NAME in vivo. In vitro, sodium nitroprusside, a nitric oxide donor, can also increase Bax/Bcl-2 and cleaved-caspase3 protein level in HK-2 cell. Thus, low-salt diet combined with candesartan in nephritis rats led to AKI, and the mechanism involved the increase of eNOS/NO, which linked to the decrease of blood pressure and the increase of apoptosis. This study provides practical guidance for salt intake in cases of RAS inhibitor usage clinically.
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Affiliation(s)
- Yanting Yu
- Department of Nephrology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China; Department of Nephrology, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Ping Wang
- The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Zhiyun Ren
- The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Ying Xue
- The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Yutao Jia
- Department of Nephrology, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Weiwan Wang
- The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Mingda Liu
- The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Kueiching Pan
- Department of Nursing, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Leijuan Xiao
- Department of Nephrology, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China.
| | - Daxi Ji
- Department of Nephrology, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China.
| | - Xiaoyan Wang
- Department of Nephrology, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China; The Core Laboratory, Nanjing BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China.
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Looi MK. Salt intake: 97% of the world is failing to cut consumption, warns WHO. BMJ 2023; 380:570. [PMID: 36894185 DOI: 10.1136/bmj.p570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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Elsurer Afsar R, Afsar B, Ikizler TA. Sodium Management in Kidney Disease: Old Stories, New Tricks. Semin Nephrol 2023; 43:151407. [PMID: 37639931 DOI: 10.1016/j.semnephrol.2023.151407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Excessive dietary sodium intake is associated with an increased risk of hypertension, especially in the setting of chronic kidney disease (CKD). Although implementation of a low-sodium diet in patients with CKD generally is recommended, data supporting the efficacy of this practice is mostly opinion-based. Few controlled studies have investigated the specific association of dietary sodium intake and cardiovascular events and mortality in CKD. Furthermore, in epidemiologic studies, the association of sodium intake with CKD progression, cardiovascular risk, and mortality is not homogeneous, and both low- and high-sodium intake has been associated with adverse health outcomes in different studies. In general, the adverse effects of high dietary sodium intake are more apparent in the setting of advanced CKD. However, there is no established definitive target level of dietary sodium intake in different CKD stages based on glomerular filtration rate and albuminuria/proteinuria. This review discusses the current challenges regarding the rationale of sodium restriction, target levels and assessment of sodium intake, and interventions for sodium restrictions in CKD in relation to clinical outcomes.
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Affiliation(s)
- Rengin Elsurer Afsar
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN; Department of Nephrology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - Baris Afsar
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN; Department of Nephrology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - Talat Alp Ikizler
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN; Division of Nephrology and Hypertension, Vanderbilt O'Brien Center for Kidney Disease, Nashville, TN; Department of Veteran Affairs, Tennessee Valley Healthcare System, Nashville, TN.
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8
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Khor BH, Sumida K, Scholes-Robertson N, Chan M, Lambert K, Kramer H, Lui SF, Wang AYM. Nutrition Education Models for Patients With Chronic Kidney Disease. Semin Nephrol 2023; 43:151404. [PMID: 37598539 DOI: 10.1016/j.semnephrol.2023.151404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Nutrition is an integral component in the management of chronic kidney disease (CKD), and kidney health professionals play a crucial role in educating patients on dietary interventions for CKD. Several dietary modifications are indicated for CKD that require frequent adaptations with CKD progression and with underlying metabolic disturbances. However, poor adherence to dietary interventions is not uncommon among patients with CKD. An effective education program on nutrition intervention consists of providing knowledge and developing skills that are necessary to support behavioral change. The application of theoretical models of behavioral change such as social cognitive theory and the transtheoretical model in nutrition intervention has been reported to be effective in promoting changes in dietary habits. This review summarizes the evidence supporting the application of theoretical models as strategies to enhance nutrition education for patients with CKD. In addition, digital technologies are gaining interest in empowering patients and facilitating nutrition management in patients with CKD. This review also examines the applications of the latest digital technologies guided by behavioral theory in facilitating patients' changes in dietary intake patterns and lifestyle habits.
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Affiliation(s)
- Ban-Hock Khor
- Faculty of Food Science and Nutrition, University Malaysia Sabah, Sabah, Malaysia.
| | - Keiichi Sumida
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Nicole Scholes-Robertson
- Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
| | - Maria Chan
- Department of Nutrition and Dietetics, The St. George Hospital, Kogarah, New South Wales, Australia
| | - Kelly Lambert
- School of Medicine, Indigenous and Health Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Holly Kramer
- Departments of Public Health Sciences and Medicine, Loyola University, Chicago, IL, USA
| | - Siu-Fai Lui
- Hong Kong Kidney Foundation, Hong Kong, China
| | - Angela Yee-Moon Wang
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
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Chan A, Kinsman L, Chan SWC. Psychometric testing of the Determinants of Salt-Restriction Behaviour Questionnaire in people of Chinese ancestry: a methodological study. BMC Nurs 2022; 21:339. [PMID: 36461075 PMCID: PMC9717568 DOI: 10.1186/s12912-022-01124-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/25/2022] [Indexed: 12/04/2022] Open
Abstract
PURPOSE Nurses play a key role in educating people about a salt-reduced diet to prevent or manage hypertension or cardiac failure. Assessment tools such as the Chinese Determinants of Salt-Restriction Behaviour Questionnaire (DSRBQ) can provide essential evidence to inform education strategies. This study aimed to translate the DSRBQ into English and evaluate the psychometric properties of the Chinese and English versions for people of Chinese ethnicity in Australia. METHODS A two-phase cross-sectional descriptive study was conducted. Phase 1: The questionnaire was translated into English using the back-translation method. The translation equivalence and content relevance were evaluated by an expert panel. Three items were revised and eight items were removed. Phase 2: Internal consistency and stability of the questionnaires were evaluated by a group of Chinese Australians. RESULTS Both the English and Chinese versions had satisfactory psychometric properties. In phase 2, 146 participants completed the questionnaire (test), and 49 participants completed the retest. The Cronbach's alpha scores were 0.638 and 0.584 respectively, and the overall intra-class correlation coefficients were 0.820 and 0.688 respectively for the English and Chinese versions. The Item-Content Validity Index (CVI) ranged from 0.50 to 1.00. The Scale-CVI was 0.94. CONCLUSION The DSRBQ has been translated into English. Both English and Chinese versions have acceptable validity and reliability. The tools can be used in people from a Chinese cultural background living in Australia. Further validation testing may allow the tools to be adapted for use with other Chinese diaspora groups. The validated DSRBQ will support the development of evidence-based salt reduction nursing assessment tool and interventions for Chinese diasporas who reside in a country where Chinese cultural practices are employed by a minority.
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Affiliation(s)
- Alex Chan
- School of Nursing and Midwifery, University of Newcastle, Newcastle, Australia.
- School of Nursing, University of Wollongong, 33 Moore Street, Liverpool, NSW, 2170, Australia.
| | - Leigh Kinsman
- School of Nursing and Midwifery, University of Newcastle, Newcastle, Australia
- La Trobe Rural Health School, La Trobe University, Melbourne, Australia
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Notaras S, Lambert K, Perz J, Makris A. Diet in the management of non-dialysis dependent chronic kidney disease: perceptions and practices of health professionals. BMC Nephrol 2022; 23:158. [PMID: 35459131 PMCID: PMC9034530 DOI: 10.1186/s12882-022-02790-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 04/05/2022] [Indexed: 11/10/2022] Open
Abstract
Background Therapeutic strategies, including dietary intervention, to target non-dialysis dependent Chronic Kidney Disease (CKD) progression have been at the forefront of recent renal research. Nephrologists and other renal health professionals are key stakeholders in the dietary management of patients with non-dialysis dependent CKD and referrals to dietetic services. The aims of this study were to explore (i) health professional perceptions regarding the role of diet in managing non-dialysis dependent CKD, and (ii) health professional practices regarding the provision of dietary advice and referrals to dietetic services. Methods A 31-item online survey was emailed to members of professional renal networks and associations in Australia and New Zealand. Data was analysed descriptively. Categorical variables were assessed to determine associations between referral frequency, demographic variables, health professional role (non-dietetic versus dietetic) and perceptions of the role of diet. Results Overall, 189 health professionals completed the survey. Nephrologists (42%), renal nurses (29%) and renal dietitians (24%) were the most common respondents. Non-dietetic health professionals rated the importance of diet in the management of non-dialysis dependent CKD significantly lower than renal dietitians (73% versus 98% ranked as very-extremely important, p = 0.002). Fifty percent of non-dietetic health professionals referred patients to renal dietetic services never or 0–25% of the time. Reasons for not referring included perceptions there is a lack of evidence that diet reduces CKD progression, perceptions that patients will not adhere to dietary recommendations, and a desire to reduce visit burden for patients. Barriers to accessing dietetic services were perceived to be significant and include lengthy wait times and inadequate dietetic staffing. Conclusion Inconsistencies exist between non-dietetic health professionals and dietitians regarding the importance of diet in non-dialysis dependent CKD. Referral practices appear to be influenced by beliefs about the evidence base and perceptions regarding the ability of dietitians to meet referral demand. Raising awareness for non-dietetic health professionals working in nephrology regarding the evidence on diet and CKD progression is needed. An improved understanding of this evidence base may improve knowledge and referral patterns. Further, an increase in renal dietetic staffing is recommended to enhance patient access to services. Supplementary Information The online version contains supplementary material available at 10.1186/s12882-022-02790-y.
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Affiliation(s)
- Stephanie Notaras
- School of Medicine, Western Sydney University, Building 30, Campbelltown NSW, Campbelltown, 2560, Australia.
| | - Kelly Lambert
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Building 41, Wollongong, NSW, 2522, Australia
| | - Janette Perz
- Translational Health Research Institute, Western Sydney University, Building 3, David Pilgrim Avenue, Campbelltown, NSW, 2560, Australia
| | - Angela Makris
- School of Medicine, Western Sydney University, Building 30, Campbelltown NSW, Campbelltown, 2560, Australia
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11
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Abstract
OBJECTIVE The benefits of a low-salt diet for patients with chronic kidney disease (CKD) are controversial. We conducted a systematic review and meta-analysis of the effect of a low-salt diet on major clinical outcomes. DESIGN Systematic review and meta-analysis. DATA SOURCES MEDLINE by Ovid, EMBASE and the Cochrane Library databases. ELIGIBILITY CRITERIA FOR SELECTING STUDIES We included randomised controlled trials (RCTs) and cohort studies that assessed the effect of a low-salt diet on the renal composite outcomes (more than 50% decline in estimated glomerular filtration rate (eGFR) during follow-up, doubling of serum creatinine or end-stage renal disease), rate of eGFR decline, change in proteinuria, all-cause mortality events, cardiovascular (CV) events, and changes in systolic blood pressure and diastolic blood pressure. DATA EXTRACTION AND SYNTHESIS Two independent researchers extracted data and evaluated their quality. Relative risks (RRs) with 95% CIs were used for dichotomous data. Differences in means (MDs) or standardised mean differences (SMDs) with 95% CIs were used to pool continuous data. We used the Cochrane Collaboration risk-of-bias tool to evaluate the quality of RCTs, and Newcastle-Ottawa Scale to evaluate the quality of cohort studies. RESULTS We found 9948 potential research records. After removing duplicates, we reviewed the titles and abstracts, and screened the full text of 230 publications. Thirty-three studies with 101 077 participants were included. A low-salt diet produced a 28% reduction in renal composite outcome events (RR: 0.72; 95% CI: 0.58 to 0.89). No significant effects were found in terms of changes in proteinuria (SMD: -0.71; 95% CI: -1.66 to 0.24), rate of eGFR (decline MD: 1.16; 95% CI: -2.02 to 4.33), risk of all-cause mortality (RR: 0.92; 95% CI: 0.58 to 1.46) and CV events (RR: 1.01; 95% CI: 0.46 to 2.22). CONCLUSION A low-salt diet seems to reduce the risk for renal composite outcome events in patients with CKD. However, no compelling evidence indicated that such a diet would reduce the eGFR decline rate, proteinuria, incidence of all-cause mortality and CV events. Further, more definitive studies are needed. PROSPERO REGISTRATION NUMBER CRD42017072395.
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Affiliation(s)
- Honghong Shi
- Renal Division, Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Xiaole Su
- Renal Division, Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Chunfang Li
- Renal Divison, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi, China
| | - Wenjuan Guo
- Renal Division, Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Lihua Wang
- Renal Division, Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
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Banerjee D, Winocour P, Chowdhury TA, De P, Wahba M, Montero R, Fogarty D, Frankel AH, Karalliedde J, Mark PB, Patel DC, Pokrajac A, Sharif A, Zac-Varghese S, Bain S, Dasgupta I. Management of hypertension and renin-angiotensin-aldosterone system blockade in adults with diabetic kidney disease: Association of British Clinical Diabetologists and the Renal Association UK guideline update 2021. BMC Nephrol 2022; 23:9. [PMID: 34979961 PMCID: PMC8722287 DOI: 10.1186/s12882-021-02587-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 10/28/2021] [Indexed: 12/31/2022] Open
Abstract
People with type 1 and type 2 diabetes are at risk of developing progressive chronic kidney disease (CKD) and end-stage kidney failure. Hypertension is a major, reversible risk factor in people with diabetes for development of albuminuria, impaired kidney function, end-stage kidney disease and cardiovascular disease. Blood pressure control has been shown to be beneficial in people with diabetes in slowing progression of kidney disease and reducing cardiovascular events. However, randomised controlled trial evidence differs in type 1 and type 2 diabetes and different stages of CKD in terms of target blood pressure. Activation of the renin-angiotensin-aldosterone system (RAAS) is an important mechanism for the development and progression of CKD and cardiovascular disease. Randomised trials demonstrate that RAAS blockade is effective in preventing/ slowing progression of CKD and reducing cardiovascular events in people with type 1 and type 2 diabetes, albeit differently according to the stage of CKD. Emerging therapy with sodium glucose cotransporter-2 (SGLT-2) inhibitors, non-steroidal selective mineralocorticoid antagonists and endothelin-A receptor antagonists have been shown in randomised trials to lower blood pressure and further reduce the risk of progression of CKD and cardiovascular disease in people with type 2 diabetes. This guideline reviews the current evidence and makes recommendations about blood pressure control and the use of RAAS-blocking agents in different stages of CKD in people with both type 1 and type 2 diabetes.
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Affiliation(s)
- D Banerjee
- St George's Hospitals NHS Foundation Trust, London, UK
| | - P Winocour
- ENHIDE, East and North Herts NHS Trust, Stevenage, UK
| | | | - P De
- City Hospital, Birmingham, UK
| | - M Wahba
- St Helier Hospital, Carshalton, UK
| | | | - D Fogarty
- Belfast Health and Social Care Trust, Belfast, UK
| | - A H Frankel
- Imperial College Healthcare NHS Trust, London, UK
| | | | - P B Mark
- University of Glasgow, Glasgow, UK
| | - D C Patel
- Royal Free London NHS Foundation Trust, London, UK
| | - A Pokrajac
- West Hertfordshire Hospitals, London, UK
| | - A Sharif
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | | | - S Bain
- Swansea University, Swansea, UK
| | - I Dasgupta
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
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13
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Khan FA, Khalequzzaman M, Hasan M, Choudhury SR, Chiang C, Aoyama A, Islam SS. Dietary salt intake and its correlates among adults in a slum area in Dhaka, Bangladesh: a cross-sectional study. NAGOYA JOURNAL OF MEDICAL SCIENCE 2021; 83:589-599. [PMID: 34552291 PMCID: PMC8438000 DOI: 10.18999/nagjms.83.3.589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 01/19/2021] [Indexed: 11/30/2022]
Abstract
High dietary salt intake increases the risk of noncommunicable diseases (NCDs). NCDs are increasing among the urban poor in Bangladesh, but the data of their dietary salt intake are yet scarce. This study aimed to explore the amount of dietary salt intake among adults in an urban slum area in Dhaka, Bangladesh. A cross-sectional community-based study was conducted. We randomly selected 100 residents (39 men and 61 women) aged 20–59 years without history of NCDs. A modified World Health Organization standard instrument was used for behavioral risk factor assessment and physical measurements. Dietary salt intake was estimated from the measurement of sodium (Na) excretion in spot urine samples.The estimated mean dietary salt intake was 7.8 ± 2.5 g/day, and the mean Na/potassium (K) ratio in urine was 4.9 ± 3.4. More than half (54%) of them always took additional salt in their meals, but only 6% of them consumed 5 or more servings of fruits and vegetables per day. A quarter of them perceived salt reduction not at all important. Increased mean salt intakes were marginally associated with lower waist circumference and lower waist-hip ratio. Dietary salt intake among urban slum residents was higher than the recommended level of 5 g/day; however, its association with NCD risk factors was not significant. Further studies are required to identify the urban poor specific factors.
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Affiliation(s)
- Fahmida Afroz Khan
- Department of Public Health and Informatics, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Md Khalequzzaman
- Department of Public Health and Informatics, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Md Hasan
- Department of Public Health and Informatics, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Sohel Reza Choudhury
- Department of Epidemiology and Research, National Heart Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Chifa Chiang
- Department of Public Health and Health Systems, Nagoya University School of Medicine, Nagoya, Japan
| | - Atsuko Aoyama
- Department of Public Health and Health Systems, Nagoya University School of Medicine, Nagoya, Japan.,Nagoya University of Arts and Sciences, Nissin, Japan
| | - Syed Shariful Islam
- Department of Public Health and Informatics, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
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14
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McMahon EJ, Campbell KL, Bauer JD, Mudge DW, Kelly JT. Altered dietary salt intake for people with chronic kidney disease. Cochrane Database Syst Rev 2021; 6:CD010070. [PMID: 34164803 PMCID: PMC8222708 DOI: 10.1002/14651858.cd010070.pub3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Evidence indicates that reducing dietary salt may reduce the incidence of heart disease and delay decline in kidney function in people with chronic kidney disease (CKD). This is an update of a review first published in 2015. OBJECTIVES To evaluate the benefits and harms of altering dietary salt for adults with CKD. SEARCH METHODS We searched the Cochrane Kidney and Transplant Register of Studies up to 6 October 2020 through contact with the Information Specialist using search terms relevant to this review. Studies in the Register are identified through searches of CENTRAL, MEDLINE, and EMBASE, conference proceedings, the International Clinical Trials Register (ICTRP) Search Portal and ClinicalTrials.gov. SELECTION CRITERIA Randomised controlled trials comparing two or more levels of salt intake in adults with any stage of CKD. DATA COLLECTION AND ANALYSIS Two authors independently assessed studies for eligibility, conducted risk of bias evaluation and evaluated confidence in the evidence using GRADE. Results were summarised using random effects models as risk ratios (RR) for dichotomous outcomes or mean differences (MD) for continuous outcomes, with 95% confidence intervals (CI). MAIN RESULTS We included 21 studies (1197 randomised participants), 12 in the earlier stages of CKD (779 randomised participants), seven in dialysis (363 randomised participants) and two in post-transplant (55 randomised participants). Selection bias was low in seven studies, high in one and unclear in 13. Performance and detection biases were low in four studies, high in two, and unclear in 15. Attrition and reporting biases were low in 10 studies, high in three and unclear in eight. Because duration of the included studies was too short (1 to 36 weeks) to test the effect of salt restriction on endpoints such as death, cardiovascular events or CKD progression, changes in salt intake on blood pressure and other secondary risk factors were examined. Reducing salt by mean -73.51 mmol/day (95% CI -92.76 to -54.27), equivalent to 4.2 g or 1690 mg sodium/day, reduced systolic/diastolic blood pressure by -6.91/-3.91 mm Hg (95% CI -8.82 to -4.99/-4.80 to -3.02; 19 studies, 1405 participants; high certainty evidence). Albuminuria was reduced by 36% (95% CI 26 to 44) in six studies, five of which were carried out in people in the earlier stages of CKD (MD -0.44, 95% CI -0.58 to -0.30; 501 participants; high certainty evidence). The evidence is very uncertain about the effect of lower salt intake on weight, as the weight change observed (-1.32 kg, 95% CI -1.94 to -0.70; 12 studies, 759 participants) may have been due to fluid volume, lean tissue, or body fat. Lower salt intake may reduce extracellular fluid volume in the earlier stages of CKD (-0.87 L, 95% CI -1.17 to -0.58; 3 studies; 187 participants; low certainty evidence). The evidence is very uncertain about the effect of lower salt intake on reduction in antihypertensive dose (RR 2.45, 95% CI 0.98 to 6.08; 8 studies; 754 participants). Lower salt intake may lead to symptomatic hypotension (RR 6.70, 95% CI 2.40 to 18.69; 6 studies; 678 participants; moderate certainty evidence). Data were sparse for other types of adverse events. AUTHORS' CONCLUSIONS We found high certainty evidence that salt reduction reduced blood pressure in people with CKD, and albuminuria in people with earlier stage CKD in the short-term. If such reductions could be maintained long-term, this effect may translate to clinically significant reductions in CKD progression and cardiovascular events. Research into the long-term effects of sodium-restricted diet for people with CKD is warranted.
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Affiliation(s)
- Emma J McMahon
- Wellbeing and Preventable Chronic Diseases Division, Menzies School of Health Research, Charles Darwin University, Brisbane, Australia
| | - Katrina L Campbell
- Centre for Applied Health Economics, Menzies Health Institute Queensland, Griffith University, Nathan, Australia
- Healthcare Excellence and Innovation, Metro North Hospital and Health Service, Herston, Australia
| | - Judith D Bauer
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Australia
| | - David W Mudge
- Department of Nephrology, University of Queensland at Princess Alexandra Hospital, Woolloongabba, Australia
| | - Jaimon T Kelly
- Centre for Applied Health Economics, Menzies Health Institute Queensland, Griffith University, Nathan, Australia
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15
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Valtuille R. Potential Novel Benefits of Sodium Restriction in Chronic Kidney Disease. Curr Hypertens Rev 2021; 17:59-66. [PMID: 32538730 DOI: 10.2174/1573402116666200615152139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/20/2020] [Accepted: 04/30/2020] [Indexed: 11/22/2022]
Abstract
Chronic kidney disease is a global public health issue, and it has been considered as the epidemic of the 21st century. Therefore, all initiatives addressed to slow down the evolution and complications of this condition should be well received. While the effects of salt reduction on cardiovascular disease have some controversial issues, in chronic kidney disease, such a policy is beneficial in multiple aspects. In chronic kidney disease patients, dietary sodium restriction is regularly recommended to control extracellular fluid expansion, hypertension and cardiovascular risk. Instead, the effects of sodium reduction on chronic kidney disease progression are still controversial. In the last years, potentially beneficial effects of a low sodium diet on chronic kidney disease evolution have emerged. Firstly, recent magnetic resonance-based findings of increased Na depots in skin and muscle associated with renal function, ageing and sodium intake open a vast body of investigation as a potential tool for monitoring effects of sodium restriction. In this narrative review, we also discussed novel aspects of sodium restriction in chronic kidney disease to manage metabolic acidosis as well as renal effects on fibroblast growth factor 23 or gut microbiota. Beyond current evidence, these approaches showed that common findings of kidney failure environment such as sodium -sensitivity, micro-inflammation, arterial stiffness metabolic acidosis and sarcopenia could be delayed controlling dietary sodium. Additional studies are now needed in populations with chronic kidney disease to confirm these new findings, addressed to slow down the evolution and complications of this condition.
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Affiliation(s)
- Rodolfo Valtuille
- Department of Clinical Research, Universidad Nacional Guillermo Brown, 2289 Espora Avenue, Burzaco, B1852FZD Buenos Aires, Argentina
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16
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Rozga M, Burrowes JD, Byham-Gray LD, Handu D. Effects of Sodium-Specific Medical Nutrition Therapy from a Registered Dietitian Nutritionist in Individuals with Chronic Kidney Disease: An Evidence Analysis Center Systematic Review and Meta-Analysis. J Acad Nutr Diet 2021; 122:445-460.e19. [PMID: 33941476 DOI: 10.1016/j.jand.2021.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 11/15/2022]
Abstract
Dietary sodium intake can increase risk of hypertension, a leading cause of kidney failure in individuals with chronic kidney disease. The objective of this systematic review was to examine the effect of sodium-specific medical nutrition therapy provided by a registered dietitian nutritionist or international equivalent on blood pressure and urinary sodium excretion in individuals with chronic kidney disease, stages 2 through 5, receiving maintenance dialysis and posttransplant. Medline, the Cumulative Index to Nursing and Allied Health Literature, Cochrane Cochrane Central Register of Controlled Trials, and other databases were searched to identify eligible controlled trials published in the English language from January 2000 until June 2020 that addressed the research question. Risk of bias was assessed using the RoB 2.0 tool and quality of evidence was examined by outcome using the Grading of Recommendations Assessment, Development, and Evaluation method. Of the 5,642 articles identified, eight studies were included in the final analyses. Six studies targeted clients who were not dialyzed, including one with clients who were posttransplantation, and two studies with clients receiving maintenance hemodialysis. Sodium-specific medical nutrition therapy from a registered dietitian nutritionist significantly reduced clinic systolic blood pressure (mean difference -6.7, 95% CI -11.0 to -2.4 mm Hg; I2 = 51%) and diastolic blood pressure (mean difference -4.8, 95% CI, -7.1 to -2.4 mm Hg; I2 = 23%) as well as urinary sodium excretion (mean difference -67.6, 95% CI -91.6 to -43.6 mmol/day; I2 = 84.1%). Efficacy was limited to individuals who were not dialyzed, including posttransplantation, but the intervention did not significantly improve blood pressure in individuals receiving maintenance hemodialysis. Adults with chronic kidney disease should begin to work with registered dietitian nutritionist early in the course of disease to receive individualized, effective counseling to improve risk factors and, ultimately, health outcomes.
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Affiliation(s)
- Mary Rozga
- Academy of Nutrition and Dietetics Evidence Analysis Center, Chicago, IL.
| | | | | | - Deepa Handu
- Academy of Nutrition and Dietetics Evidence Analysis Center, Chicago, IL
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17
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Boslooper-Meulenbelt K, Boonstra MD, van Vliet IMY, Gomes-Neto AW, Osté MCJ, Poelman MP, Bakker SJL, de Winter AF, Navis GJ. Food Literacy Is Associated With Adherence to a Mediterranean-Style Diet in Kidney Transplant Recipients. J Ren Nutr 2021; 31:628-636. [PMID: 33678545 DOI: 10.1053/j.jrn.2020.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 11/05/2020] [Accepted: 12/27/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES Adherence to a Mediterranean-style diet is associated with improved health outcomes in kidney transplant recipients (KTR). However, poor dietary habits, including excessive sodium intake, are common in KTR, indicating difficulties with incorporating a healthy diet into daily life. Food literacy is identified as potential facilitator of a healthy diet, but the precise relationship between food literacy and dietary intake in KTR has not been investigated. This study examined food literacy levels in KTR and its association with adherence to a Mediterranean-style diet and sodium intake. METHODS This cross-sectional study is part of the TransplantLines Cohort and Biobank Study. Food literacy was measured with the Self-Perceived Food Literacy (SPFL) questionnaire. Dietary intake assessment with food frequency questionnaires was used to calculate the Mediterranean Diet Score. Sodium intake was based on the 24-hour urinary sodium excretion rate. Associations of SPFL with Mediterranean Diet Score and sodium intake were assessed with univariable and multivariable linear regression analyses. RESULTS In total, 148 KTR (age 56 [48-66]; 56% male) completed the SPFL questionnaire with a mean SPFL score of 3.63 ± 0.44. Higher SPFL was associated with a higher Mediterranean Diet Score in KTR (β = 1.51, 95% confidence interval 0.88-2.12, P ≤ .001). Although KTR with higher food literacy tended to have a lower sodium intake than those with lower food literacy (P = .08), the association of food literacy with sodium intake was not significant in a multivariable regression analysis (β = 0.52 per 10 mmol/24-hour increment, 95% confidence interval -1.79 to 2.83, P = .66). CONCLUSIONS Higher levels of food literacy are associated with better adherence to a Mediterranean-style diet in KTR. No association between food literacy and sodium intake was found. Further studies are needed to determine if interventions on improving food literacy contribute to a healthier diet and better long-term outcomes in KTR.
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Affiliation(s)
- Karin Boslooper-Meulenbelt
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Marco D Boonstra
- Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Iris M Y van Vliet
- Department of Dietetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Antonio W Gomes-Neto
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Maryse C J Osté
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Maartje P Poelman
- Chairgroup Consumption and Healthy Lifestyles, Wageningen University and Research, Wageningen, The Netherlands
| | - Stephan J L Bakker
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Andrea F de Winter
- Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gerjan J Navis
- Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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18
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Alexander S, Varughese S, Franklin R, Roy S, Rebekah G, David VG, Mohapatra A, Valson AT, Jacob S, Koshy PM, Rajan G, Daha MR, Feehally J, Barratt J, John GT. Epidemiology, baseline characteristics and risk of progression in the first South-Asian prospective longitudinal observational IgA nephropathy cohort. Kidney Int Rep 2021; 6:414-428. [PMID: 33615067 PMCID: PMC7879115 DOI: 10.1016/j.ekir.2020.11.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/17/2020] [Accepted: 11/19/2020] [Indexed: 01/18/2023] Open
Abstract
INTRODUCTION Glomerular Research And Clinical Experiments-IgA Nephropathy in Indians (GRACE-IgANI) is the first prospective South Asian IgAN cohort with protocolized follow-up and extensive biosample collection. Here we report the baseline clinical, biochemical, and histopathologic characteristics of GRACE IgANI and calculate baseline risk of progression for the cohort. METHODS 201 incident adults with kidney biopsy-proven primary IgAN were recruited into GRACE-IgANI between March 2015 and September 2017. As of April 30, 2020, the cohort had completed a median follow-up of 30 months (interquartile range [IQR] 16-39). RESULTS The commonest clinical presentation in GRACE IgANI was hypertension, with or without proteinuria, and nephrotic-range proteinuria was present in 34%, despite <10 months of lead time to kidney biopsy. The GRACE-IgANI kidney biopsy data demonstrated a disproportionate absence of active glomerular lesions and overrepresentation of segmental sclerosing lesions and tubulointerstitial fibrosis at presentation, often coexistent with relatively well-preserved estimated glomerular filtration rate (eGFR) and low levels of proteinuria, especially in males. Baseline risk of progression was calculated for each evaluable patient using 2 different risk prediction tools. The median 5-year absolute risk of end-stage kidney disease (ESKD) was 19.8% (IQR 2.7-57.4) and median 5-year risk of progression to the combined endpoint of 50% decline in eGFR or ESKD was 35.5% using the 2 tools. CONCLUSIONS The predicted risk of progression in this cohort was considerable. Over the next 5 years, we will dissect the pathogenic pathways that underlie this severe South Asian IgAN phenotype.
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Affiliation(s)
| | | | | | - Sanjeet Roy
- Department of General Pathology, Christian Medical College, Vellore, India
| | - Grace Rebekah
- Department of Biostatistics, Christian Medical College, Vellore, India
| | | | - Anjali Mohapatra
- Department of Nephrology, Christian Medical College, Vellore, India
| | - Anna T. Valson
- Department of Nephrology, Christian Medical College, Vellore, India
| | - Shibu Jacob
- Department of Nephrology, Christian Medical College, Vellore, India
| | | | - Gautham Rajan
- Department of Nephrology, Christian Medical College, Vellore, India
| | | | - John Feehally
- University of Leicester College of Medicine Biological Sciences and Psychology, UK
| | - Jonathan Barratt
- University of Leicester College of Medicine Biological Sciences and Psychology, UK
| | - George T. John
- Department of Nephrology, Christian Medical College, Vellore, India
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19
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Panuccio V, Mallamaci F, Pizzini P, Tripepi R, Garofalo C, Parlongo G, Caridi G, Provenzano M, Mafrica A, Simone G, Cutrupi S, D'Arrigo G, Porto G, Tripepi G, Nardellotto A, Meneghel G, Dattolo P, Pizzarelli F, Rapisarda F, Ricchiuto A, Fatuzzo P, Verdesca S, Gallieni M, Gesualdo L, Conte G, Plebani M, Zoccali C. Reducing salt intake by urine chloride self-measurement in non-compliant patients with chronic kidney disease followed in nephrology clinics: a randomized trial. Nephrol Dial Transplant 2020; 36:gfaa262. [PMID: 33291142 DOI: 10.1093/ndt/gfaa262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Adherence to low salt diets and control of hypertension remain unmet clinical needs in chronic kidney disease (CKD) patients. METHODS We performed a 6-month multicentre randomized trial in non-compliant patients with CKD followed in nephrology clinics testing the effect of self-measurement of urinary chloride (69 patients) as compared with standard care (69 patients) on two primary outcome measures, adherence to a low sodium (Na) diet (<100 mmol/day) as measured by 24-h urine Na (UNa) excretion and 24-h ambulatory blood pressure (ABPM) monitoring. RESULTS In the whole sample (N = 138), baseline UNa and 24-h ABPM were143 ± 64 mmol/24 h and 131 ± 18/72 ± 10 mmHg, respectively, and did not differ between the two study arms. Patients in the active arm of the trial used >80% of the chloride strips provided to them at the baseline visit and at follow-up visits. At the third month, UNa was 35 mmol/24 h (95% CI 10.8-58.8 mmol/24 h; P = 0.005) lower in the active arm than the control arm, whereas at 6 months the between-arms difference in UNa decreased and was no longer significant [23 mmol/24 h (95% CI -5.6-50.7); P = 0.11]. The 24-h ABPM changes as well as daytime and night-time BP changes at 3 and 6 months were similar in the two study arms (Month 3, P = 0.69-0.99; Month 6, P = 0.73-0.91). Office BP, the use of antihypertensive drugs, estimated Glomerular Filtration Rate (eGFR) and proteinuria remained unchanged across the trial. CONCLUSIONS The application of self-measurement of urinary chloride to guide adherence to a low salt diet had a modest effect on 24-h UNa and no significant effect on 24-h ABPM.
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Affiliation(s)
- Vincenzo Panuccio
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Francesca Mallamaci
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
- Institute of Clinical Physiology (IFC), Clinical Epidemiology of Renal Diseases and Hypertension Unit, Reggio Calabria, Italy
| | - Patrizia Pizzini
- Institute of Clinical Physiology (IFC), Clinical Epidemiology of Renal Diseases and Hypertension Unit, Reggio Calabria, Italy
| | - Rocco Tripepi
- Institute of Clinical Physiology (IFC), Clinical Epidemiology of Renal Diseases and Hypertension Unit, Reggio Calabria, Italy
| | - Carlo Garofalo
- Division of Nephrology Azienda, Ospedaliera Universitaria Napoli, Naples, Italy
| | - Giovanna Parlongo
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Graziella Caridi
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Michele Provenzano
- Division of Nephrology Azienda, Ospedaliera Universitaria Napoli, Naples, Italy
| | - Angela Mafrica
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Giuseppina Simone
- Division of Nephrology, Azienda Ospedaliera "Santa Maria Annunziata" Firenze, Florence, Italy
| | - Sebastiano Cutrupi
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Graziella D'Arrigo
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Gaetana Porto
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | - Giovanni Tripepi
- Nephrology, Dialysis and Transplantation Unit, Grande Ospedale Metropolitano, Reggio Calabria, Italy
| | | | - Gina Meneghel
- Division of Nephrology, Ospedale Dolo, Mirano-Venezia, Italy
| | - Piero Dattolo
- Division of Nephrology, Azienda Ospedaliera "Santa Maria Annunziata" Firenze, Florence, Italy
| | - Francesco Pizzarelli
- Division of Nephrology, Azienda Ospedaliera "Santa Maria Annunziata" Firenze, Florence, Italy
| | - Francesco Rapisarda
- Department of Medicine, Nephrology Unit, Policlinico Universitario Vittorio Emanuele, Catania, Italy
| | - Anna Ricchiuto
- Division of Nephrology, Ospedale Universitario Sacco, Milano, Italy
| | - Pasquale Fatuzzo
- Department of Medicine, Nephrology Unit, Policlinico Universitario Vittorio Emanuele, Catania, Italy
| | - Simone Verdesca
- Department of Laboratory Medicine, University-Hospital of Padova, Padua, Italy
| | - Maurizio Gallieni
- Division of Nephrology, Università Consorziale Policlinico, Bari, Italy
| | - Loreto Gesualdo
- Division of Nephrology, Università Consorziale Policlinico, Bari, Italy
| | - Giuseppe Conte
- Division of Nephrology Azienda, Ospedaliera Universitaria Napoli, Naples, Italy
| | - Mario Plebani
- Department of Medicine-DIMED, University of Padova and Department of Laboratory Medicine, University Hospital of Padova, Italy
| | - Carmine Zoccali
- Institute of Clinical Physiology (IFC), Clinical Epidemiology of Renal Diseases and Hypertension Unit, Reggio Calabria, Italy
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20
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Chang HC, Cheng HM, Chen CH, Wang TD, Soenarta AA, Turana Y, Teo BW, Tay JC, Tsoi K, Wang JG, Kario K. Dietary intervention for the management of hypertension in Asia. J Clin Hypertens (Greenwich) 2020; 23:538-544. [PMID: 33274585 PMCID: PMC8029518 DOI: 10.1111/jch.14116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/09/2020] [Accepted: 11/18/2020] [Indexed: 11/28/2022]
Abstract
Hypertension is among the leading global risks for premature death. As the risks substantially increase along with the elevated blood pressure, a small reduction of blood pressure could have prevented numerous cardiovascular events in general population. Evidence has shown that dietary intervention is a cost-effective strategy that has been broadly advocated in the published guidelines. However, the implementation could be limited by different food cultures. This review details the mechanisms of each dietary intervention approach, evidence, and the implications in Asian populations, and the perspective of future research.
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Affiliation(s)
- Hao-Chih Chang
- Department of Medicine, Taipei Veterans General Hospital Su-Ao and Yuan-Shan Branch, Yilan, Taiwan
| | - Hao-Min Cheng
- Department of Medicine, Taipei Veterans General Hospital Su-Ao and Yuan-Shan Branch, Yilan, Taiwan.,Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan.,Department of Medical Education, Center for Evidence-based Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Public Health and Community Medicine Research Center, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Chen-Huan Chen
- Department of Medicine, Taipei Veterans General Hospital Su-Ao and Yuan-Shan Branch, Yilan, Taiwan.,Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan.,Department of Medical Education, Center for Evidence-based Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Public Health and Community Medicine Research Center, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Tzung-Dau Wang
- Division of Cardiology, National Taiwan University Hospital, Taipei, Taiwan
| | - Arieska Ann Soenarta
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia-National Cardiovascular Center, Harapan Kita, Jakarta, Indonesia
| | - Yuda Turana
- School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Boon Wee Teo
- Division of Nephrology Department of Medicine, Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Jam Chin Tay
- Department of General Medicine, Tan Tock Seng Hospital, Singapore, Singapore
| | - Kelvin Tsoi
- JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Ji-Guang Wang
- Department of Hypertension, Centre for Epidemiological Studies and Clinical Trials, the Shanghai Institute of Hypertension, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
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21
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Bovée DM, Cuevas CA, Zietse R, Danser AHJ, Mirabito Colafella KM, Hoorn EJ. Salt-sensitive hypertension in chronic kidney disease: distal tubular mechanisms. Am J Physiol Renal Physiol 2020; 319:F729-F745. [DOI: 10.1152/ajprenal.00407.2020] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Chronic kidney disease (CKD) causes salt-sensitive hypertension that is often resistant to treatment and contributes to the progression of kidney injury and cardiovascular disease. A better understanding of the mechanisms contributing to salt-sensitive hypertension in CKD is essential to improve these outcomes. This review critically explores these mechanisms by focusing on how CKD affects distal nephron Na+ reabsorption. CKD causes glomerulotubular imbalance with reduced proximal Na+ reabsorption and increased distal Na+ delivery and reabsorption. Aldosterone secretion further contributes to distal Na+ reabsorption in CKD and is not only mediated by renin and K+ but also by metabolic acidosis, endothelin-1, and vasopressin. CKD also activates the intrarenal renin-angiotensin system, generating intratubular angiotensin II to promote distal Na+ reabsorption. High dietary Na+ intake in CKD contributes to Na+ retention by aldosterone-independent activation of the mineralocorticoid receptor mediated through Rac1. High dietary Na+ also produces an inflammatory response mediated by T helper 17 cells and cytokines increasing distal Na+ transport. CKD is often accompanied by proteinuria, which contains plasmin capable of activating the epithelial Na+ channel. Thus, CKD causes both local and systemic changes that together promote distal nephron Na+ reabsorption and salt-sensitive hypertension. Future studies should address remaining knowledge gaps, including the relative contribution of each mechanism, the influence of sex, differences between stages and etiologies of CKD, and the clinical relevance of experimentally identified mechanisms. Several pathways offer opportunities for intervention, including with dietary Na+ reduction, distal diuretics, renin-angiotensin system inhibitors, mineralocorticoid receptor antagonists, and K+ or H+ binders.
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Affiliation(s)
- Dominique M. Bovée
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
- Division of Vascular Medicine, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Catharina A. Cuevas
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Robert Zietse
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - A. H. Jan Danser
- Division of Vascular Medicine, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Katrina M. Mirabito Colafella
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
- Department of Physiology, Monash University, Melbourne, Victoria, Australia
| | - Ewout J. Hoorn
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
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Ikizler TA, Burrowes JD, Byham-Gray LD, Campbell KL, Carrero JJ, Chan W, Fouque D, Friedman AN, Ghaddar S, Goldstein-Fuchs DJ, Kaysen GA, Kopple JD, Teta D, Yee-Moon Wang A, Cuppari L. KDOQI Clinical Practice Guideline for Nutrition in CKD: 2020 Update. Am J Kidney Dis 2020; 76:S1-S107. [PMID: 32829751 DOI: 10.1053/j.ajkd.2020.05.006] [Citation(s) in RCA: 796] [Impact Index Per Article: 199.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/29/2020] [Indexed: 12/14/2022]
Abstract
The National Kidney Foundation's Kidney Disease Outcomes Quality Initiative (KDOQI) has provided evidence-based guidelines for nutrition in kidney diseases since 1999. Since the publication of the first KDOQI nutrition guideline, there has been a great accumulation of new evidence regarding the management of nutritional aspects of kidney disease and sophistication in the guidelines process. The 2020 update to the KDOQI Clinical Practice Guideline for Nutrition in CKD was developed as a joint effort with the Academy of Nutrition and Dietetics (Academy). It provides comprehensive up-to-date information on the understanding and care of patients with chronic kidney disease (CKD), especially in terms of their metabolic and nutritional milieu for the practicing clinician and allied health care workers. The guideline was expanded to include not only patients with end-stage kidney disease or advanced CKD, but also patients with stages 1-5 CKD who are not receiving dialysis and patients with a functional kidney transplant. The updated guideline statements focus on 6 primary areas: nutritional assessment, medical nutrition therapy (MNT), dietary protein and energy intake, nutritional supplementation, micronutrients, and electrolytes. The guidelines primarily cover dietary management rather than all possible nutritional interventions. The evidence data and guideline statements were evaluated using Grading of Recommendations, Assessment, Development and Evaluation (GRADE) criteria. As applicable, each guideline statement is accompanied by rationale/background information, a detailed justification, monitoring and evaluation guidance, implementation considerations, special discussions, and recommendations for future research.
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Abstract
BACKGROUND Sodium restriction is difficult for most individuals with hypertension. Intention to limit sodium intake predicts behavior. Information on the determinants of intention to restrict sodium intake is limited. OBJECTIVES The aims of this study were to identify (1) determinants of intention to restrict high-sodium food intake and (2) sources of sodium consumed by patients with hypertension in Indonesia. METHODS A cross-sectional study was conducted among adult patients with hypertension (n = 206) attending cardiac clinics. A researcher-developed and tested, self-administered questionnaire that included questions about sodium restriction and a high-sodium food inventory was distributed. The quantile regression method was used to identify determinants of intention to restrict dietary sodium. RESULTS The mean age of the patients with hypertension was 59 ± 10 years, and more than three-fourths were obese (n = 162, 78%). The determinants of intention to limit sodium intake included gender (β = 0.737, P = .036), attitude (β = -0.141, P = .050), and subjective norm (β = -0.283, P = .005). Men reported higher sodium consumption, while attitudes and subjective norm were negatively correlated with sodium intake. These determinants predicted 13.2% of the variance in intention to restrict dietary sodium. Subjects reported frequently consuming snacks (n = 82, 39.7%) and seasoning condiments (n = 65, 31.6%). CONCLUSIONS High-sodium snacks and condiments added while cooking were frequently consumed among patients with hypertension in Indonesia. Understanding the factors associated with intention to follow a low-sodium diet will assist nurses to design effective interventions that promote adherence to the low-sodium diet among those with hypertension.
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Zhang YM, Zheng J, Gaunt TR, Zhang H. Mendelian Randomization Analysis Reveals a Causal Effect of Urinary Sodium/Urinary Creatinine Ratio on Kidney Function in Europeans. Front Bioeng Biotechnol 2020; 8:662. [PMID: 32733862 PMCID: PMC7358605 DOI: 10.3389/fbioe.2020.00662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 05/28/2020] [Indexed: 11/13/2022] Open
Abstract
Salt restriction was recommended in clinical practice guideline for chronic kidney disease (CKD) treatment, but its effect on kidney outcomes remains conflicting. We aimed to test the causal effect of salt intake, using estimated 24-h sodium excretion from spot urinary sodium/urinary creatinine (UNa/UCr) ratio as a surrogate, on renal function using two-sample Mendelian randomization (MR). Genetic instruments for UNa/UCr were derived from a recent genome-wide association study of 218,450 European-descent individuals in the UK Biobank. Kidney outcomes were creatinine-based estimated glomerular filtration rate (eGFRcrea) (N = 567,460) and CKD (eGFRcrea < 60 ml/min/1.73 m2, N cases = 41,395, N controls = 439,303) from the CKDGen consortium. Cystatin C-based eGFR (eGFRcys) and eGFRcrea single-nucleotide polymorphisms associated with blood urea nitrogen (BUN) were used for sensitivity analyses. MR revealed a causal effect of UNa/UCr on higher eGFRcrea [β = 0.14, unit change in log ml/min/1.73 m2 per UNa/UCr ratio; 95% confidence interval (CI) = 0.07 - 0.20, P = 2.15 × 10-5] and a protective effect against CKD risk (odds ratio = 0.24, 95% CI = 0.14 to 0.41, P = 1.20 × 10-7). The MR findings were confirmed by MR-Egger regression, weighted median MR, and mode estimate MR, with less evidence of existence of horizontal pleiotropy. Consistent positive causal effect of UNa/UCr on eGFRcys was also detected. On the other hand, bidirectional MR suggested inconclusive results of CKD, eGFRcrea, eGFRcrea (BUN associated), and eGFRcys on UNa/UCr. The average 24-h sodium excretion was estimated to be approximately 2.6 g per day for women and 3.7 g per day for men. This study provides evidence that sodium excretion, well above the recommendation of <2 g per day of sodium intake, might not have a harmful effect on kidney function. Clinical trials are warranted to evaluate the sodium restriction target on kidney function.
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Affiliation(s)
- Yue-Miao Zhang
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
| | - Jie Zheng
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Bristol, United Kingdom
| | - Tom R Gaunt
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Bristol, United Kingdom.,National Institute for Health Research (NIHR), Bristol Biomedical Research Centre, Bristol, United Kingdom
| | - Hong Zhang
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
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Borrelli S, Provenzano M, Gagliardi I, Ashour M, Liberti ME, De Nicola L, Conte G, Garofalo C, Andreucci M. Sodium Intake and Chronic Kidney Disease. Int J Mol Sci 2020; 21:E4744. [PMID: 32635265 PMCID: PMC7369961 DOI: 10.3390/ijms21134744] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/27/2020] [Accepted: 07/01/2020] [Indexed: 12/14/2022] Open
Abstract
In Chronic Kidney Disease (CKD) patients, elevated blood pressure (BP) is a frequent finding and is traditionally considered a direct consequence of their sodium sensitivity. Indeed, sodium and fluid retention, causing hypervolemia, leads to the development of hypertension in CKD. On the other hand, in non-dialysis CKD patients, salt restriction reduces BP levels and enhances anti-proteinuric effect of renin-angiotensin-aldosterone system inhibitors in non-dialysis CKD patients. However, studies on the long-term effect of low salt diet (LSD) on cardio-renal prognosis showed controversial findings. The negative results might be the consequence of measurement bias (spot urine and/or single measurement), reverse epidemiology, as well as poor adherence to diet. In end-stage kidney disease (ESKD), dialysis remains the only effective means to remove dietary sodium intake. The mismatch between intake and removal of sodium leads to fluid overload, hypertension and left ventricular hypertrophy, therefore worsening the prognosis of ESKD patients. This imposes the implementation of a LSD in these patients, irrespective of the lack of trials proving the efficacy of this measure in these patients. LSD is, therefore, a rational and basic tool to correct fluid overload and hypertension in all CKD stages. The implementation of LSD should be personalized, similarly to diuretic treatment, keeping into account the volume status and true burden of hypertension evaluated by ambulatory BP monitoring.
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MESH Headings
- Blood Pressure
- Diet, Sodium-Restricted
- Humans
- Hypertension/diet therapy
- Hypertension/etiology
- Hypertension/physiopathology
- Hypertrophy, Left Ventricular/diet therapy
- Hypertrophy, Left Ventricular/etiology
- Hypertrophy, Left Ventricular/physiopathology
- Kidney Failure, Chronic/complications
- Kidney Failure, Chronic/diet therapy
- Kidney Failure, Chronic/physiopathology
- Prognosis
- Renal Dialysis
- Renal Insufficiency, Chronic/complications
- Renal Insufficiency, Chronic/diet therapy
- Renal Insufficiency, Chronic/physiopathology
- Renin-Angiotensin System/physiology
- Sodium Chloride, Dietary/administration & dosage
- Water-Electrolyte Imbalance/diet therapy
- Water-Electrolyte Imbalance/etiology
- Water-Electrolyte Imbalance/physiopathology
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Affiliation(s)
- Silvio Borrelli
- Nephrology Unit, Advanced Surgical and Medical Sciences Department of University of Campania “Luigi Vanvitelli”, Piazza Miraglia, 80137 Naples, Italy; (M.E.L.); (L.D.N.); (G.C.); (C.G.)
| | - Michele Provenzano
- Nephrology Unit, Department of Health Sciences, “Magna Grecia” University, 88100 Catanzaro, Italy; (M.P.); (I.G.); (M.A.); (M.A.)
| | - Ida Gagliardi
- Nephrology Unit, Department of Health Sciences, “Magna Grecia” University, 88100 Catanzaro, Italy; (M.P.); (I.G.); (M.A.); (M.A.)
| | - Michael Ashour
- Nephrology Unit, Department of Health Sciences, “Magna Grecia” University, 88100 Catanzaro, Italy; (M.P.); (I.G.); (M.A.); (M.A.)
| | - Maria Elena Liberti
- Nephrology Unit, Advanced Surgical and Medical Sciences Department of University of Campania “Luigi Vanvitelli”, Piazza Miraglia, 80137 Naples, Italy; (M.E.L.); (L.D.N.); (G.C.); (C.G.)
| | - Luca De Nicola
- Nephrology Unit, Advanced Surgical and Medical Sciences Department of University of Campania “Luigi Vanvitelli”, Piazza Miraglia, 80137 Naples, Italy; (M.E.L.); (L.D.N.); (G.C.); (C.G.)
| | - Giuseppe Conte
- Nephrology Unit, Advanced Surgical and Medical Sciences Department of University of Campania “Luigi Vanvitelli”, Piazza Miraglia, 80137 Naples, Italy; (M.E.L.); (L.D.N.); (G.C.); (C.G.)
| | - Carlo Garofalo
- Nephrology Unit, Advanced Surgical and Medical Sciences Department of University of Campania “Luigi Vanvitelli”, Piazza Miraglia, 80137 Naples, Italy; (M.E.L.); (L.D.N.); (G.C.); (C.G.)
| | - Michele Andreucci
- Nephrology Unit, Department of Health Sciences, “Magna Grecia” University, 88100 Catanzaro, Italy; (M.P.); (I.G.); (M.A.); (M.A.)
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Wright HH, Kickbusch H, Swanepoel E, Gray N. Factors Influencing Low Sodium Intake in People with Non‐Dialysis Dependent Chronic Kidney Disease. J Ren Care 2019; 46:95-105. [DOI: 10.1111/jorc.12311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hattie H. Wright
- School of Health and Sport SciencesUniversity of the Sunshine CoastMaroochydore Queensland Australia
| | - Heidi Kickbusch
- School of Health and Sport SciencesUniversity of the Sunshine CoastMaroochydore Queensland Australia
| | - Elizabeth Swanepoel
- School of Health and Sport SciencesUniversity of the Sunshine CoastMaroochydore Queensland Australia
| | - Nicholas Gray
- Renal UnitSunshine Coast Hospital and Health ServiceBirtinya Queensland Australia
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Evangelidis N, Craig J, Bauman A, Manera K, Saglimbene V, Tong A. Lifestyle behaviour change for preventing the progression of chronic kidney disease: a systematic review. BMJ Open 2019; 9:e031625. [PMID: 31662393 PMCID: PMC6830616 DOI: 10.1136/bmjopen-2019-031625] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES Modifying lifestyle can prevent the progression of chronic kidney disease (CKD) but the specific elements which lead to favourable behaviour change are not well understood. We aimed to identify and evaluate behaviour change techniques and functions in lifestyle interventions for preventing the progression of CKD. DESIGN Systematic review. DATA SOURCES MEDLINE, EMBASE, CINAHL and PsycINFO. ELIGIBILITY CRITERIA Trials of lifestyle behaviour change interventions (including diet, physical activity, smoking and/or alcohol) published to September 2018 in adults with CKD stages 1-5. DATA EXTRACTION AND SYNTHESIS Trial characteristics including population, sample size, study setting, intervention, comparator, outcomes and study duration, were extracted. Study quality was independently assessed by two reviewers using the Cochrane risk of bias tool. The Behaviour Change Technique Taxonomy v1 was used to identify behaviour change techniques (eg, goal setting) and the Health Behaviour Change Wheel was used to identify intervention functions (eg, education). Both were independently assessed by three reviewers. RESULTS In total, 26 studies involving 4263 participants were included. Risk of bias was high or unclear in most studies. Interventions involved diet (11), physical activity (8) or general lifestyle (7). Education was the most frequently used function (21 interventions), followed by enablement (18), training (12), persuasion (4), environmental restructuring (4), modelling (2) and incentivisation (2). The most common behaviour change techniques were behavioural instruction (23 interventions), social support (16), behavioural demonstration (13), feedback on behaviour (12) and behavioural practice/rehearsal (12). Eighteen studies (69%) showed a significant improvement in at least one primary outcome, all of which included education, persuasion, modelling and incentivisation. CONCLUSION Lifestyle behaviour change interventions for CKD patients frequently used education, goal setting, feedback, monitoring and social support. The most promising interventions included education and used a variety of intervention functions (persuasion, modelling and incentivisation). PROSPERO REGISTRATION NUMBER CRD42019106053.
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Affiliation(s)
- Nicole Evangelidis
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Jonathan Craig
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - Adrian Bauman
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Karine Manera
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Valeria Saglimbene
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Allison Tong
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
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Notaras S, Galea L, Lee P, Mak M, Lambert K, Makris A. The association between dietetic consultation and time to dialysis for patients attending a pre-dialysis clinic: A retrospective cohort study. Nephrology (Carlton) 2019; 25:390-397. [PMID: 31353675 DOI: 10.1111/nep.13639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2019] [Indexed: 12/16/2022]
Abstract
AIM A multidisciplinary approach, including dietetics, is considered the optimal model of care for dialysis preparation. Dietetic consultation (DC) focuses on symptom management and dietary changes to delay time to dialysis. Evidence of the effectiveness of DC on time to dialysis is limited. This study aimed to investigate the impact of DC on time to dialysis for patients attending a pre-dialysis clinic. METHODS A retrospective cohort study was designed to include all patients attending outpatient pre-dialysis clinics at a large metropolitan renal service between January 2014 and March 2018. Time to dialysis (days) was compared between patients that received DC and those who did not. Cox proportional hazards analysis allowing for adjustment of differences and confounders was undertaken. RESULTS A cohort of 246 patients was identified. Median estimated glomerular filtration rate was 16mL/min per 1.73 m2 (interquartile range = 13-20) at initial pre-dialysis clinic visit and 63% commenced dialysis during the study period. Only 41% of patients received dietetic consultation. Significantly fewer patients needed to commence dialysis in the DC group compared to the no-DC group (hazards ratio 0.63; 95% confidence interval (CI) 0.45-0.89; P = 0.008 Cox proportion hazard). The DC group commenced dialysis significantly later than the no-DC group; 933 days (95% CI 832-1034) versus 710 days (95% CI 630-790) respectively, after the initial pre-dialysis clinic visit; log-rank 0.005. CONCLUSION DC provided to patients attending a pre-dialysis clinic was associated with a delayed time to dialysis. Standardised referral pathways to improve patient access to renal dietetic services are recommended to optimise care.
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Affiliation(s)
- Stephanie Notaras
- Department of Dietetics, Liverpool Hospital, Sydney, New South Wales, Australia.,School of Medicine, University of Western Sydney, Sydney, New South Wales, Australia
| | - Leanne Galea
- Department of Dietetics, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Paul Lee
- Department of Dietetics, Liverpool Hospital, Sydney, New South Wales, Australia
| | - May Mak
- Department of Dietetics, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Kelly Lambert
- Department of Nutrition and Dietetics, University of Wollongong, Wollongong, New South Wales, Australia
| | - Angela Makris
- School of Medicine, University of Western Sydney, Sydney, New South Wales, Australia.,School of Medicine, University of New South Wales, Sydney, New South Wales, Australia.,Department of Renal Medicine, Liverpool Hospital, Sydney, New South Wales, Australia
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Rapid weight loss with dietary salt restriction in hospitalized patients with chronic kidney disease. Sci Rep 2019; 9:8787. [PMID: 31217504 PMCID: PMC6584671 DOI: 10.1038/s41598-019-45341-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 06/04/2019] [Indexed: 11/08/2022] Open
Abstract
Dietary salt restriction is essential for managing fluid retention in patients with chronic kidney disease (CKD). In this retrospective cohort study, we investigated weight loss from the perspective of fluid status in CKD patients during a 7-day hospitalization period while consuming a low-salt diet (5 g/day). Among 311 patients, the median weight loss (interquartile range, maximum) was 0.7 (0.0–1.4, 4.7) kg on Day 4 and 1.0 (0.3–1.7, 5.9) kg on Day 7. Patients were classified into quartiles based on pre-hospital urinary salt excretion (quartile [Q] 1, 1.2–5.7; Q2, 5.8–8.4; Q3, 8.5–11.3; Q4, 11.4–29.2 g/day). Weight loss was significantly greater in Q3 and Q4 than in Q1. The body mass index (BMI) and urinary salt excretion in the first 24 hours after admission were independently associated with rapid weight loss on Day 4 by multivariate logistic regression analysis. In conclusion, CKD patients with a high salt intake or high BMI exhibit rapid weight loss within a few days of consuming a low-salt diet. Dietary salt restriction is effective for reducing proteinuria in these patients, but long-term observation is needed to confirm the sustained effects.
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Baay S, Hemmelgarn B, Tam-Tham H, Finlay J, Elliott MJ, Straus S, Beanlands H, Herrington G, Donald M. Understanding Adults With Chronic Kidney Disease and Their Caregivers' Self-Management Experiences: A Qualitative Study Using the Theoretical Domains Framework. Can J Kidney Health Dis 2019; 6:2054358119848126. [PMID: 31205731 PMCID: PMC6535912 DOI: 10.1177/2054358119848126] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/26/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Self-management support interventions are widely accepted in chronic kidney disease (CKD) care; however, interventions rarely consider individual behaviors by incorporating a behavioral theoretical framework. The Theoretical Domains Framework (TDF) can be used to facilitate an understanding of patients and their caregivers' behaviors to successfully self-manage CKD. OBJECTIVES (1) To understand behaviors of patients with CKD and their caregivers and identify potential intervention approaches to support CKD self-management and (2) to explore relationships between the 14 TDF domains and CKD self-management. DESIGN Qualitative descriptive study using both content and thematic analysis. SETTING Purposive criterion was used to recruit participants from across Canada. PATIENTS Canadian patients with CKD and their caregivers. MEASUREMENTS Focus groups and telephone interviews using a semistructured interview guide. METHODS We conducted a secondary analysis of qualitative data collected from focus groups and telephone interviews from July 2017 to January 2018. Two research team members coded the transcribed data to the 14 TDF domains using a modified approach of the Framework Method. We linked the common TDF domains to relevant intervention functions from the Behaviour Change Wheel (BCW) to identify potential intervention approaches. We also identified and mapped relationships between the relevant TDF domains to report emerging themes. RESULTS Six focus groups (37 participants) and 11 telephone interview transcripts were analyzed. Five TDF domains that influenced CKD self-management behavior were identified: environmental context and resources, knowledge, beliefs about capabilities, beliefs about consequences, and social influences. Four BCW intervention functions were identified: education, modeling, persuasion, and environmental restructuring. Four emergent themes, shaped by the populated 14 TDF domains, were identified: What does this mean for me? Help me help myself, How does this make me feel? and Who am I? LIMITATIONS The TDF was not used to design the interview guide; therefore, there may be underrepresentation of some TDF domains relevant for self-management. CONCLUSION Our findings highlight 5 TDF domains that can influence CKD self-management behavior and 4 possible intervention approaches to influence behavior change in patients with CKD and their caregivers. Emergent themes highlight participants' interpretation of being diagnosed with CKD, their motivations, feelings, values, and altered identity. This work will inform the codesign of a behavior change intervention to enhance patient self-management of CKD.
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Affiliation(s)
- Sarah Baay
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
| | - Brenda Hemmelgarn
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
- Interdisciplinary Chronic Disease Collaboration, Calgary, AB, Canada
- Department of Community Health Sciences, University of Calgary, AB, Canada
| | - Helen Tam-Tham
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
| | - Juli Finlay
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
| | - Meghan J. Elliott
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
| | - Sharon Straus
- Department of Medicine, University of Toronto, ON, Canada
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON, Canada
| | - Heather Beanlands
- Daphne Cockwell School of Nursing, Ryerson University, Toronto, ON, Canada
| | | | - Maoliosa Donald
- Department of Medicine, Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Community Health Sciences, University of Calgary, AB, Canada
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Masood Y, Bower P, Waheed MW, Brown G, Waheed W. Synthesis of researcher reported strategies to recruit adults of ethnic minorities to clinical trials in the United Kingdom: A systematic review. Contemp Clin Trials 2019; 78:1-10. [PMID: 30634035 DOI: 10.1016/j.cct.2019.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/04/2018] [Accepted: 01/04/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND People from ethnic minorities are reported to have higher rates of physical illness (diabetes and ischemic heart disease) and mental disorders. Disparities relate not just to diagnosis, but also to care pathways and treatment outcomes. Despite this, they are underrepresented in clinical research. This reduces the generalisability of research findings across multi ethnic populations and hinders the development of accessible services. Researchers often face difficulties in recruiting ethnic minority participants to clinical research due to low levels of cultural competence and limited resources. There are few published trials focusing on ethnic minorities in the UK and we need to understand what recruitment strategies have already been implemented and recommended when recruiting ethnic participants. This will help researchers in applying these lessons to future clinical trials. METHOD To identify strategies for recruiting ethnic minorities to clinical trials in the UK a systematic review of published randomised controlled trials (RCT) exclusively targeting ethnic minorities was conducted. Multiple databases were searched by combining the terms "ethnic minorities", "randomised controlled trials" and "United Kingdom". Data was extracted on recruitment strategies described by each RCT and then themes were created. RESULTS Twenty-one included RCT's identified various strategies to recruit ethnic communities to clinical trials. These have been described under three overarching themes; adaptation of screening and outcome measures, culturally specific recruitment training and recruitment processes. CONCLUSION The review highlighted that researchers employed limited strategies to enhance the recruitment level. The full extent of the use of strategies was not described well in the publications. There is a need for wider training and support for the trialist to enhance and build up recruitment skills to facilitate the recruitment of ethnic minorities to clinical trials.
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Meuleman Y, Hoekstra T, Dekker FW, van der Boog PJM, van Dijk S. Perceived Sodium Reduction Barriers Among Patients with Chronic Kidney Disease: Which Barriers Are Important and Which Patients Experience Barriers? Int J Behav Med 2018; 25:93-102. [PMID: 28887758 PMCID: PMC5803277 DOI: 10.1007/s12529-017-9668-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE The purposes of this study were to assess the importance of perceived sodium reduction barriers among patients with chronic kidney disease (CKD) and identify associated sociodemographic, clinical, and psychosocial factors. METHOD A total of 156 patients with CKD completed a questionnaire assessing sodium reduction barriers (18 self-formulated items), depressive symptoms (Beck Depression Inventory), perceived autonomy support (Modified Health Care Climate Questionnaire), and self-efficacy (Partners in Health Questionnaire). Factor analysis was used to identify barrier domains. Correlation coefficients were computed to examine relationships between barrier domains and patient characteristics. RESULTS Nine barrier domains were identified. Barriers perceived as important were as follows: high sodium content in products, lack of sodium feedback, lack of goal setting and discussing strategies for sodium reduction, and not experiencing CKD-related symptoms (mean scores > 3.0 on 5-point scales, ranging from 1 'no barrier' to 5 'very important barrier'). Other barriers (knowledge, attitude, coping skills when eating out, and professional support) were rated as moderately important (rated around midpoint), and the barrier 'intrinsic motivation' was rated as somewhat important (mean score = 1.9). Sodium reduction barrier domains were not associated with gender and kidney function, but were associated with age, level of education, number of comorbidities, perceived autonomy support, depressive symptoms, and self-efficacy (range r = 0.17-0.35). Patients with lower self-efficacy and perceived autonomy support scores experienced most sodium reduction barriers. CONCLUSION Patients with CKD experience multiple important sodium reduction barriers and could benefit from support strategies that target various sodium reduction barriers and strengthen beliefs regarding self-efficacy and autonomy support. Additionally, environmental interventions should be implemented to reduce sodium levels in processed foods.
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Affiliation(s)
- Yvette Meuleman
- Department of Health, Medical, and Neuropsychology, Institute of Psychology, Leiden University, Wassenaarseweg 52, 2300 RB, Leiden, The Netherlands. .,Department of Medical Psychology, Leiden University Medical Center, Leiden, The Netherlands.
| | - Tiny Hoekstra
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Nephrology, VU University Medical Center, Amsterdam, The Netherlands
| | - Friedo W Dekker
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Sandra van Dijk
- Department of Health, Medical, and Neuropsychology, Institute of Psychology, Leiden University, Wassenaarseweg 52, 2300 RB, Leiden, The Netherlands
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Hamler TC, Miller VJ, Petrakovitz S. Chronic Kidney Disease and Older African American Adults: How Embodiment Influences Self-Management. Geriatrics (Basel) 2018; 3:E52. [PMID: 31011089 PMCID: PMC6319230 DOI: 10.3390/geriatrics3030052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/02/2018] [Accepted: 08/15/2018] [Indexed: 12/22/2022] Open
Abstract
Patients living with chronic kidney disease (CKD) must balance the medical management of their kidney disease and other chronic conditions with their daily lives, including managing the emotional and psychosocial consequences of living with a chronic disease. Self-management is critical to managing chronic kidney disease, as treatment consists of a complex regimen of medications, dosages, and treatments. This is a particularly important issue for older African American adults who will comprise a significant portion of the older adult population in the coming years. Yet current conceptualizations of self-management behaviors cannot adequately address the needs of this population. Embodiment theory provides a novel perspective that considers how social factors and experiences are embodied within decision-making processes regarding self-management care among older African Americans. This paper will explore how embodiment theory can aid in shifting the conceptualization of self-management from a model of individual choice, to a framework that cannot separate lived experiences of social, political, and racial factors from clinical understandings of self-management behaviors. This shift in the conceptualization of self-management is particularly important to consider for CKD management because the profound illness burdens require significant self-management and care coordination skills.
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Affiliation(s)
- Tyrone C Hamler
- Mandel School of Applied Social Sciences, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Vivian J Miller
- School of Social Work, University of Texas at Arlington, Arlington, TX 76109, USA.
| | - Sonya Petrakovitz
- Department of Anthropology, Case Western Reserve University, Cleveland, OH 44106, USA.
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Garofalo C, Borrelli S, Provenzano M, De Stefano T, Vita C, Chiodini P, Minutolo R, De Nicola L, Conte G. Dietary Salt Restriction in Chronic Kidney Disease: A Meta-Analysis of Randomized Clinical Trials. Nutrients 2018; 10:nu10060732. [PMID: 29882800 PMCID: PMC6024651 DOI: 10.3390/nu10060732] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 05/31/2018] [Accepted: 06/04/2018] [Indexed: 02/06/2023] Open
Abstract
Background. A clear evidence on the benefits of reducing salt in people with chronic kidney disease (CKD) is still lacking. Salt restriction in CKD may allow better control of blood pressure (BP) as shown in a previous systematic review while the effect on proteinuria reduction remains poorly investigated. Methods. We performed a meta-analysis of randomized controlled trials (RCTs) evaluating the effects of low versus high salt intake in adult patients with non-dialysis CKD on change in BP, proteinuria and albuminuria. Results. Eleven RCTs were selected and included information about 738 CKD patients (Stage 1–4); urinary sodium excretion was 104 mEq/day (95%CI, 76–131) and 179 mEq/day (95%CI, 165–193) in low- and high-sodium intake subgroups, respectively, with a mean difference of −80 mEq/day (95%CI from −107 to −53; p <0.001). Overall, mean differences in clinic and ambulatory systolic BP were −4.9 mmHg (95%CI from −6.8 to −3.1, p <0.001) and −5.9 mmHg (95%CI from −9.5 to −2.3, p <0.001), respectively, while clinic and ambulatory diastolic BP were −2.3 mmHg (95%CI from −3.5 to −1.2, p <0.001) and −3.0 mmHg (95%CI from −4.3 to −1.7; p <0.001), respectively. Mean differences in proteinuria and albuminuria were −0.39 g/day (95%CI from −0.55 to −0.22, p <0.001) and −0.05 g/day (95%CI from −0.09 to −0.01, p = 0.013). Conclusion. Moderate salt restriction significantly reduces BP and proteinuria/albuminuria in patients with CKD (Stage 1–4).
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Affiliation(s)
- Carlo Garofalo
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Silvio Borrelli
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Michele Provenzano
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Toni De Stefano
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Carlo Vita
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Paolo Chiodini
- Medical Statistics Unit, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Roberto Minutolo
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Luca De Nicola
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Giuseppe Conte
- Division of Nephrology, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
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35
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Yang GH, Zhou X, Ji WJ, Liu JX, Sun J, Shi R, Jiang TM, Li YM. Effects of a low salt diet on isolated systolic hypertension: A community-based population study. Medicine (Baltimore) 2018; 97:e0342. [PMID: 29620663 PMCID: PMC5902269 DOI: 10.1097/md.0000000000010342] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Evidence has shown that long-term sodium reduction can not only reduce blood pressure, but also provide cardiovascular benefits. To date, there is little evidence related to the effects of salt reduction on isolated systolic hypertension (ISH).A total of 126 hypertensive patients were divided into an ISH group (n = 51) and a non-ISH (NISH) group (n = 75). The members of each group were then randomly assigned to low sodium salt (LSSalt) or normal salt (NSalt) diets for 6 months. Their blood pressure was measured every 2 months. Serum plasma renin-angiotensin activity, blood biochemical assays and urinary measurements were determined at the baseline and at the end of the 6 months.At the end of the study, the mean systolic blood pressure (SBP) of the ISH LSSalt group had significantly decreased by 10.18 mm Hg (95% confidence interval (CI): 3.13 to 17.2, P = .006) compared with that of the ISH NSalt group, while the mean SBP only decreased by 5.10 mm Hg (95% CI: -2.02 to 12.2, P = .158) in the NISH LSSalt group compared with that of the NISH NSalt group. The mean diastolic blood pressure (DBP) had no significant differences in the ISH and NISH groups. No obvious renin angiotensin system activation was found after LSSalt intervention. Regarding the urinary excretion of electrolytes and blood biochemical assays, the LSSalt treatment had the same effects on the ISH group as on the NISH group.The present study showed that the SBP of ISH patients was significantly decreased with the LSSalt intervention, while neither the SBP of the NISH patients nor the DBP of either group were similarly decreased, which indicated that ISH patients were more sensitive to salt restriction.
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Donald M, Kahlon BK, Beanlands H, Straus S, Ronksley P, Herrington G, Tong A, Grill A, Waldvogel B, Large CA, Large CL, Harwood L, Novak M, James MT, Elliott M, Fernandez N, Brimble S, Samuel S, Hemmelgarn BR. Self-management interventions for adults with chronic kidney disease: a scoping review. BMJ Open 2018; 8:e019814. [PMID: 29567848 PMCID: PMC5875600 DOI: 10.1136/bmjopen-2017-019814] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 01/22/2018] [Accepted: 01/24/2018] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE To systematically identify and describe self-management interventions for adult patients with chronic kidney disease (CKD). SETTING Community-based. PARTICIPANTS Adults with CKD stages 1-5 (not requiring kidney replacement therapy). INTERVENTIONS Self-management strategies for adults with CKD. PRIMARY AND SECONDARY OUTCOME MEASURES Using a scoping review, electronic databases and grey literature were searched in October 2016 to identify self-management interventions for adults with CKD stages 1-5 (not requiring kidney replacement therapy). Randomised controlled trials (RCTs), non-RCTs, qualitative and mixed method studies were included and study selection and data extraction were independently performed by two reviewers. Outcomes included behaviours, cognitions, physiological measures, symptoms, health status and healthcare. RESULTS Fifty studies (19 RCTs, 7 quasi-experimental, 5 observational, 13 pre-post intervention, 1 mixed method and 5 qualitative) reporting 45 interventions were included. The most common intervention topic was diet/nutrition and interventions were regularly delivered face to face. Interventions were administered by a variety of providers, with nursing professionals the most common health professional group. Cognitions (ie, changes in general CKD knowledge, perceived self-management and motivation) were the most frequently reported outcome domain that showed improvement. Less than 1% of the interventions were co-developed with patients and 20% were based on a theory or framework. CONCLUSIONS There was a wide range of self-management interventions with considerable variability in outcomes for adults with CKD. Major gaps in the literature include lack of patient engagement in the design of the interventions, with the majority of interventions not applying a behavioural change theory to inform their development. This work highlights the need to involve patients to co-developed and evaluate a self-management intervention based on sound theories and clinical evidence.
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Affiliation(s)
- Maoliosa Donald
- Department of Medicine, University of Calgary, Calgary, Canada
- Interdisciplinary Chronic Disease Collaboration, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | | | - Heather Beanlands
- Daphne Cockwell School of Nursing, Ryerson University, Toronto, Canada
| | - Sharon Straus
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Paul Ronksley
- Interdisciplinary Chronic Disease Collaboration, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | | | - Allison Tong
- Sydney School of Public Health, The University of Sydney, Sydney, New South Wales
| | - Allan Grill
- Department of Family and Community Medicine, University of Toronto, Toronto, Canada
| | | | | | - Claire L Large
- Can-SOLVE CKD Network, Patient Partner, Pouce Coupe, Canada
| | | | - Marta Novak
- Centre for Mental Health, University Health Network, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Matthew T James
- Department of Medicine, University of Calgary, Calgary, Canada
- Interdisciplinary Chronic Disease Collaboration, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | - Meghan Elliott
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | | | - Scott Brimble
- Department of Medicine, McMaster University, Ontario, Canada
| | - Susan Samuel
- Department of Pediatrics, University of Calgary, Calgary, Canada
| | - Brenda R Hemmelgarn
- Department of Medicine, University of Calgary, Calgary, Canada
- Interdisciplinary Chronic Disease Collaboration, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
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37
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Yan Z, Wang Y, Li S, Wang J, Zhang L, Tan H, Li S, Yang L, Pei H, Zhang L, Wang Y, Duan J, Jiao S, Zhao M, Fu S. Hypertension Control in Adults With CKD in China: Baseline Results From the Chinese Cohort Study of Chronic Kidney Disease (C-STRIDE). Am J Hypertens 2018; 31:486-494. [PMID: 29304216 DOI: 10.1093/ajh/hpx222] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 01/01/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Hypertension contributes to increased morbidity and mortality in the chronic kidney disease (CKD) population. Studies on blood pressure control in CKD patients in China are limited. In this study, we aimed to describe the status of blood pressure control in Chinese CKD patients based on the first national prospective CKD cohort data. METHODS A subgroup of Chinese Cohort Study of Chronic Kidney Disease participants with hypertension at baseline was included in the present study. Uncontrolled blood pressure was defined as systolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg. Defined daily doses (DDDs) are used as a standard measurement of drug utilization in this population. Factors associated with uncontrolled blood pressure were analyzed using multivariable logistic regression. RESULTS There were 2,251 hypertensive CKD subjects among 2,873 predialysis CKD participants. The awareness, treatment, and control rates of hypertension were 80.7%, 95.6%, and 57.1%, respectively. Factors independently associated with uncontrolled blood pressure were overweight, obesity, albuminuria, decreased estimated glomerular filtration rate (eGFR), and diabetes. Over 50% of study subjects were prescribed 2 or more antihypertensive medications and only 7% were prescribed diuretics. Uncontrolled hypertensive patients were prescribed less antihypertensive medication than controlled hypertensives (DDD 1.3 [1.0-2.3] vs. 2.0 [1.0-3.1], P < 0.001). CONCLUSIONS Hypertension control was suboptimal among hypertensive CKD patients in China, especially among those overweight or with obesity, albuminuria, lower eGFR, and diabetes. Patients with uncontrolled hypertension should undergo treatment regimen evaluation to select the appropriate dosage and type of antihypertensive medications.
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Affiliation(s)
- Zhe Yan
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Yu Wang
- Renal Division, Department of Medicine, Peking University First Hospital
| | - Shaomei Li
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Jinwei Wang
- Renal Division, Department of Medicine, Peking University First Hospital
| | - Luxia Zhang
- Renal Division, Department of Medicine, Peking University First Hospital
| | - Huibin Tan
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Sumin Li
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Lin Yang
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Huaying Pei
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Liping Zhang
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Yan Wang
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Jianzhao Duan
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Sumin Jiao
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
| | - Minghui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital
| | - Shuxia Fu
- Renal Division, Department of Medicine, The Second Hospital of Hebei Medical University
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38
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Nerbass FB, Calice-Silva V, Pecoits-Filho R. Sodium Intake and Blood Pressure in Patients with Chronic Kidney Disease: A Salty Relationship. Blood Purif 2018; 45:166-172. [PMID: 29478050 DOI: 10.1159/000485154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hypertension affects almost all chronic kidney disease patients and is related to poor outcomes. Sodium intake is closely related to blood pressure (BP) levels in this population and decreasing its intake consistently improves the BP control particularly in short-term controlled trials. However, most patients struggle in following a controlled diet on sodium according to the guidelines recommendation due to several factors and barriers discussed in this article. SUMMARY This review article summarizes the current knowledge related to the associations between sodium consumption, BP, and the risk of cardiovascular disease and chronic kidney disease (CKD); it also provides recommendations of how to achieve sodium intake lowering. Key Messages: Evidences support the benefits in decreasing sodium intake on markers of cardiovascular and renal outcomes in CKD. Trials had shorter follow-up and to maintain long-term sodium intake control is a major challenge. Larger studies with longer follow-up looking at hard endpoints will be important to drive future recommendations.
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Affiliation(s)
- Fabiana B Nerbass
- Department of Internal Medicine, School of Medicine, Pontificia Universidade Católica do Paraná, Curitiba, Brazil.,Division of Nephrology, Pro-Rim Foundation, Joinville, Brazil
| | - Viviane Calice-Silva
- Department of Internal Medicine, School of Medicine, Pontificia Universidade Católica do Paraná, Curitiba, Brazil.,Division of Nephrology, Pro-Rim Foundation, Joinville, Brazil
| | - Roberto Pecoits-Filho
- Department of Internal Medicine, School of Medicine, Pontificia Universidade Católica do Paraná, Curitiba, Brazil
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Lambert K, Mullan J, Mansfield K. An integrative review of the methodology and findings regarding dietary adherence in end stage kidney disease. BMC Nephrol 2017; 18:318. [PMID: 29061163 PMCID: PMC5653982 DOI: 10.1186/s12882-017-0734-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 09/27/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Dietary modification is an important component of the management of end stage kidney disease (ESKD). The diet for ESKD involves modifying energy and protein intake, and altering sodium, phosphate, potassium and fluid intake. There have been no comprehensive reviews to date on this topic. The aims of this integrative review were to (i) describe the methods used to measure dietary adherence (ii) determine the rate of dietary adherence and (iii) describe factors associated with dietary adherence in ESKD. METHODS The Web of Science and Scopus databases were searched using the search terms 'adherence' and 'end stage kidney disease'. Of the 787 potentially eligible papers retrieved, 60 papers of 24,743 patients were included in this review. Of these papers, 44 reported the rate of dietary adherence and 44 papers described factors associated with adherence. RESULTS Most of the evidence regarding dietary adherence is derived from studies of hemodialysis patients (72% of patients). The most common method of measuring dietary adherence in ESKD was subjective techniques (e.g. food diaries or adherence questionnaires). This was followed by indirect methods (e.g. serum potassium, phosphate or interdialytic weight gain). The weighted mean adherence rate to ESKD dietary recommendations was 31.5% and 68.5% for fluid recommendations. Adherence to protein, sodium, phosphate, and potassium recommendations were highly variable due to differences in measurement methods used, and were often derived from a limited evidence base. Socioeconomic status, age, social support and self-efficacy were associated with dietary adherence. However, factors such as taste, the impact of the diet on social eating occasions; and dietetic staffing also appear to play a role in dietary adherence. CONCLUSION Dietary adherence rates in people with ESKD are suboptimal. Further research is required on dietary adherence in patients with ESKD from different social, educational, economic and ethnic groups. This research may identify other factors which may impact upon adherence, and could be used to inform the design of future strategies to improve dietary adherence. Future research that reports not just the rate of adherence to individual components of the nutrient prescription but also the overall quality of the diet would be useful.
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Affiliation(s)
- Kelly Lambert
- Department of Clinical Nutrition, Wollongong Hospital, Illawarra Shoalhaven Local Health District, Level 5, Block C, Crown Street, Wollongong, NSW 2500 Australia
| | - Judy Mullan
- Centre for Health Research Illawarra Shoalhaven Population (CHRISP), Australian Health Services Research Institute, University of Wollongong, iC Enterprise 1, Innovation Campus, Wollongong, New South Wales 2522 Australia
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Northfields Ave, Wollongong, New South Wales 2522 Australia
| | - Kylie Mansfield
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Northfields Ave, Wollongong, New South Wales 2522 Australia
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40
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Meuleman Y, Hoekstra T, Dekker FW, Navis G, Vogt L, van der Boog PJ, Bos WJW, van Montfrans GA, van Dijk S, van Dijk S, Meuleman Y, Dekker FW, Hoekstra T, Navis G, Vogt L, van der Boog PJ, Bos WJW, van Montfrans GA, Boeschoten EW, Verduijn M, ten Brinke L, Spijker A, Kwakernaak AJ, Humalda JK, van Hirtum T, Bokelaar R, Loos ML, Bakker-Edink A, Poot C, Ciere Y, Zwaard S, Veldscholte G, Heuveling L, Storm M, Prantl K. Sodium Restriction in Patients With CKD: A Randomized Controlled Trial of Self-management Support. Am J Kidney Dis 2017; 69:576-586. [DOI: 10.1053/j.ajkd.2016.08.042] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 08/25/2016] [Indexed: 11/11/2022]
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41
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Nomura K, Asayama K, Jacobs L, Thijs L, Staessen JA. Renal function in relation to sodium intake: a quantitative review of the literature. Kidney Int 2017; 92:67-78. [PMID: 28412019 DOI: 10.1016/j.kint.2016.11.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 11/22/2016] [Accepted: 11/29/2016] [Indexed: 01/10/2023]
Abstract
We undertook a quantitative literature review to search for evidence underpinning current guidelines proposing a reduction of sodium intake to less than 2.4 g/d for the management of chronic kidney disease. We searched PubMed for peer-reviewed articles published from January 1980 through May 2016. Two investigators screened 5072 publications and extracted data from 36, including 11 cross-sectional and 5 longitudinal observational studies and 20 intervention trials. Within-study effect sizes were pooled and standardized to a sodium gradient of 100 mmol/d by using inverse-variance weighted random effects models. Among cross-sectional studies, the pooled odds ratio for albuminuria was 1.23 (95% confidence interval [CI], 0.92-1.64, P = 0.16), and the pooled mean difference in glomerular filtration rate amounted to 8.5 ml/min (CI, -2.3 to 19.2 ml/min; P = 0.12). In the cohort studies, the pooled relative risk of a renal endpoint was 1.08 (CI, 0.92-1.29; P = 0.35). In the intervention trials (median duration, 14 days [range, 4-186 days]), the mean differences in estimated glomerular filtration rate and albuminuria (high vs. low sodium intake) averaged 4.6 ml/min (CI, 3.4-5.8 ml/min; P < 0.0001) and 53% (CI, 21-84; P = 0.001), respectively. Cochran's Q statistic indicated significant heterogeneity among cross-sectional studies for both estimated glomerular filtration rate and albuminuria (P < 0.0001) and among intervention trials for albuminuria (P = 0.04). In conclusion, there is no robust evidence suggesting that long-term reduction of salt intake would prevent chronic kidney disease or delay its progression. However, our current findings, which were mainly obtained in people with slight renal impairment, cannot be extrapolated to patients with moderate or severe chronic kidney disease.
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Affiliation(s)
- Kyoko Nomura
- Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan
| | - Kei Asayama
- Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan; Department of Planning for Drug Development and Clinical Evaluation, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Lotte Jacobs
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Lutgarde Thijs
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Jan A Staessen
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium; R&D Group VitaK, Maastricht University, Maastricht, The Netherlands.
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Saran R, Padilla RL, Gillespie BW, Heung M, Hummel SL, Derebail VK, Pitt B, Levin NW, Zhu F, Abbas SR, Liu L, Kotanko P, Klemmer P. A Randomized Crossover Trial of Dietary Sodium Restriction in Stage 3-4 CKD. Clin J Am Soc Nephrol 2017; 12:399-407. [PMID: 28209636 PMCID: PMC5338699 DOI: 10.2215/cjn.01120216] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 10/31/2016] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND OBJECTIVES Patients with chronic kidney disease (CKD) are often volume expanded and hypertensive. Few controlled studies have assessed the effects of a sodium-restricted diet (SRD) in CKD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We conducted a randomized crossover trial to evaluate the effect of SRD (target <2 g sodium per day) versus usual diet on hydration status (by bioelectrical impedance spectroscopy) and blood pressure (BP) between May of 2009 and May of 2013. A total of 58 adults with stage 3-4 CKD were enrolled from two academic sites: University of Michigan (n=37) and University of North Carolina at Chapel Hill (n=21); 60% were men, 43% were diabetic, 93% were hypertensive, and mean age was 61 years. Participants followed SRD or usual diet for 4 weeks, followed by a 2-week washout period and a 4-week crossover phase. During the SRD, dieticians provided counseling every 2 weeks, using motivational interviewing techniques. RESULTS Whole-body extracellular volume and calf intracellular volume decreased by 1.02 L (95% confidence interval [95% CI], -1.48 to -0.56; P<0.001) and -0.06 L (95% CI, -0.12 to -0.01; P=0.02), respectively, implying decreased fluid content on the SRD compared with usual diet. Significant reductions in urinary sodium (-57.3 mEq/24 h; 95% CI, -81.8 to -32.9), weight (-2.3 kg; 95% CI, -3.2 to -1.5), and 24-hour systolic BP (-10.8 mmHg; 95% CI, -17.0 to -4.6) were also observed (all P<0.01). Albumin-to-creatinine ratio did not change significantly and mean serum creatinine increased slightly (0.1 mg/dl; 95% CI, -0.01 to 0.2; P=0.06). No period or carryover effects were observed. Results were similar when analyzed from phase 1 only before crossover, although P values were modestly larger because of the loss of power. CONCLUSIONS In this randomized crossover trial, implementation of SRD in patients with CKD stage 3-4 resulted in clinically and statistically significant improvement in BP and hydration status. This simple dietary intervention merits a larger trial in CKD to evaluate effects on major clinical outcomes.
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Affiliation(s)
- Rajiv Saran
- Division of Nephrology, Department of Internal Medicine
| | - Robin L. Padilla
- Department of Biostatistics, Kidney Epidemiology and Cost Center
| | - Brenda W. Gillespie
- Department of Biostatistics, Consulting for Statistics, Computing and Analytics Research, and
| | - Michael Heung
- Division of Nephrology, Department of Internal Medicine
| | - Scott L. Hummel
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan
- Division Cardiology, Department of Internal Medicine, Ann Arbor Veterans Affairs Health System, Ann Arbor, Michigan
| | - Vimal Kumar Derebail
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Bertram Pitt
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan
| | - Nathan W. Levin
- Renal Research Institute, Research Division, New York, New York; and
| | - Fansan Zhu
- Renal Research Institute, Research Division, New York, New York; and
| | - Samer R. Abbas
- Renal Research Institute, Research Division, New York, New York; and
| | - Li Liu
- Renal Research Institute, Research Division, New York, New York; and
| | - Peter Kotanko
- Renal Research Institute, Research Division, New York, New York; and
- Division of Nephrology, Department of Internal Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Philip Klemmer
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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Chan M, Kelly J, Tapsell L. Dietary Modeling of Foods for Advanced CKD Based on General Healthy Eating Guidelines: What Should Be on the Plate? Am J Kidney Dis 2017; 69:436-450. [PMID: 28129911 DOI: 10.1053/j.ajkd.2016.09.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 09/19/2016] [Indexed: 12/30/2022]
Abstract
Chronic kidney disease (CKD) is a major public health problem with significant clinical, societal, and psychosocial burdens. Nutrition therapy has been an integral part of the medical management of patients with CKD for more than a century, with the main goals of preserving kidney function and preventing complications. Nutrition abnormalities may emerge well before dialysis therapy is initiated and are associated with poor outcomes. It is therefore important to revisit nutrition management in the advanced stages of CKD to gain a broader insight into its role and effect on patient outcomes. Traditionally, nutrition recommendations have focused on the prescription of energy (calories) and macro- and micronutrients. Today, dietary modeling also focuses on the evidence for food consumption on health. This review argues that advanced non-dialysis-dependent CKD nutrition requirements to a large extent align with healthy eating guidelines for the general population and should not be based on deprivation or be unusually restrictive. The best currently available evidence for the CKD diet is likely to be derived from CKD nutrition prescriptions in conjunction with evidence underpinning national dietary guidelines and evidence of healthy dietary patterns, such as Mediterranean-style and Dietary Approaches to Stop Hypertension (DASH)-style eating. Positive messages from these dietary patterns should improve acceptance of CKD dietary interventions among patients.
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Affiliation(s)
- Maria Chan
- Department of Nutrition and Dietetics, The St. George Hospital, Kogarah, NSW, Australia; Department of Nutrition and Dietetics, School of Medicine, University of Wollongong, Wollongong, NSW, Australia; Department of Renal Medicine, The St. George Hospital, Kogarah, NSW, Australia; St. George Clinical School, School of Medicine, The University of New South Wales, NSW, Australia.
| | - John Kelly
- Department of Renal Medicine, The St. George Hospital, Kogarah, NSW, Australia; St. George Clinical School, School of Medicine, The University of New South Wales, NSW, Australia
| | - Linda Tapsell
- Department of Nutrition and Dietetics, School of Medicine, University of Wollongong, Wollongong, NSW, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
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Cuppari L, Nerbass FB, Avesani CM, Kamimura MA. A practical approach to dietary interventions for nondialysis-dependent CKD patients: the experience of a reference nephrology center in Brazil. BMC Nephrol 2016; 17:85. [PMID: 27423180 PMCID: PMC4947314 DOI: 10.1186/s12882-016-0282-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/23/2016] [Indexed: 01/01/2023] Open
Abstract
This paper describes the 30-year experience on nutritional management of non-dialysis dependent chronic kidney disease (CKD) patients in a public outpatient clinic located in the city of São Paulo, Brazil. A team of specialized dietitians in renal nutrition is responsible to provide individual dietary counseling for patients on stages 3 to 5 of CKD. Two different types of nutrition care protocols are employed depending on the level of renal function. For patients with CKD stage 3 a simplified nutritional assessment is performed and the main dietary focus is on the control of protein intake particularly from animal sources. A more complete nutritional assessment as well as a detailed dietary plan focusing not only on the control of protein but also on energy supply and on specific micronutrients is provided for patients on stages 4 or 5 of CKD. Practical approaches and tools used by the dietitians in our clinic for improving patient´s adherence to protein, sodium and potassium restriction while maintaining a healthy diet are described in detail in the sections of the article.
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Affiliation(s)
- Lilian Cuppari
- />Division of Nephrology and Nutrition Program, Federal University of São Paulo, and Oswaldo Ramos Foundation, Rua Pedro de Toledo, 282, São Paulo, 04039-000 Brazil
| | | | - Carla Maria Avesani
- />Nutrition Institute, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Maria Ayako Kamimura
- />Nutrition Program and Division of Nephrology, Federal University of São Paulo, São Paulo, Brazil
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Wang Y, Yu F, Bao Y, Zhang L, Wang H. Factors impacting sodium restriction in patients with chronic kidney disease: a cohort study from a Chinese center. Int Urol Nephrol 2016; 48:745-9. [PMID: 26832130 DOI: 10.1007/s11255-016-1223-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
Abstract
PURPOSE Sodium restriction is important for the management of chronic kidney disease (CKD). The present study evaluated the factors impacting dietary sodium restriction in a cohort of Chinese patients with CKD. METHODS A questionnaire on dietary sodium restriction was administered to patients with non-dialysis CKD who visited our CKD clinic from September 2014 to March 2015. Twenty-four-hour urinary sodium excretion (24-h UNa) was measured. Logistic regression was performed to examine the association between patient characteristics and sodium restriction. RESULTS Two hundred and twenty-nine patients were included in the final analysis. Most of the patients (97.7 %) declared their awareness of the necessity of sodium restriction, but 27.3 % of them chose an incorrect sodium restriction limit. Most of the patients (85.2 %) also reported that they had taken actions to reduce their sodium consumption, with intolerance of sodium restriction as the most common reason for taking no actions. Only 42 patients (18.3 %) had a 24-h UNa of <100 mmol. Multivariable logistic regression showed that age and the use of condiments were independently associated with successful sodium restriction [odds ratio (95 % confidence interval) 1.04 (1.01-1.07), p = 0.006 and 0.38 (0.16-0.88), p = 0.023, respectively]. Most of the patients (83.0 %) did not know how to estimate their sodium intake from condiments. CONCLUSIONS This study indicates that there is much room for improvement in dietary sodium restriction in Chinese patients with CKD. Condiments as a hidden source of sodium intake should be stressed in the education of these patients.
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Affiliation(s)
- Yu Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China.
| | - Fangfang Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China.,Guizhou Provincial People's Hospital, Guiyang, China
| | - Yunfei Bao
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Luxia Zhang
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Hong Wang
- Department of Nutrition, Peking University First Hospital, Beijing, China
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46
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Affiliation(s)
- Marcello Tonelli
- From Department of Medicine, University of Calgary, AB, Canada (M.T.); Department of Medicine and Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, and Howard Hughes Medical Institute, Chevy Chase, MD (S.A.K..); and Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston (R.T.)
| | - S. Ananth Karumanchi
- From Department of Medicine, University of Calgary, AB, Canada (M.T.); Department of Medicine and Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, and Howard Hughes Medical Institute, Chevy Chase, MD (S.A.K..); and Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston (R.T.)
| | - Ravi Thadhani
- From Department of Medicine, University of Calgary, AB, Canada (M.T.); Department of Medicine and Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, and Howard Hughes Medical Institute, Chevy Chase, MD (S.A.K..); and Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston (R.T.)
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47
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Reduction in sodium intake is independently associated with improved blood pressure control in people with chronic kidney disease in primary care. Br J Nutr 2015; 114:936-42. [PMID: 26243465 DOI: 10.1017/s0007114515002494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Decreasing sodium intake has been associated with improvements in blood pressure (BP) and proteinuria, two important risk factors for CVD and chronic kidney disease (CKD) progression. We aimed to investigate the role of sodium intake by examining the effect of changes in sodium intake over 1 year on BP and proteinuria in people with early stage CKD. From thirty-two general practices, 1607 patients with previous estimated glomerular filtration rate of 59-30 ml/min per 1.73 m² and mean age of 72.9 (sd 9.0) years were recruited. Clinical assessment, urine and serum biochemistry testing were performed at baseline and after 1 year. Sodium intake was estimated from early morning urine specimens using an equation validated for this study population. We found that compared with people who increased their sodium intake from ≤ 100 to >100 mmol/d over 1 year, people who decreased their intake from >100 to ≤ 100 mmol/d evidenced a greater decrease in all BP variables (Δmean arterial pressure (ΔMAP) = -7.44 (SD 10.1) v. -0.23 (SD 10.4) mmHg; P<0.001) as well as in pulse wave velocity (ΔPWV = -0.47 (SD 1.3) v. 0.08 (SD 1.88) m/s; P<0.05). Albuminuria improved only in albuminuric patients who decreased their sodium intake. BP improved in people who maintained low sodium intake at both times and in those with persistent high intake, but the number of anti-hypertensive increased only in the higher sodium intake group, and PWV improved only in participants with lower sodium intake. Decreasing sodium intake was an independent determinant of ΔMAP. Although more evidence is needed, our results support the benefits of reducing and maintaining sodium intake below 100 mmol/d (2.3-2.4 g/d) in people with early stages of CKD.
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Wang AYM, Brimble KS, Brunier G, Holt SG, Jha V, Johnson DW, Kang SW, Kooman JP, Lambie M, McIntyre C, Mehrotra R, Pecoits-Filho R. ISPD Cardiovascular and Metabolic Guidelines in Adult Peritoneal Dialysis Patients Part I - Assessment and Management of Various Cardiovascular Risk Factors. Perit Dial Int 2015; 35:379-87. [PMID: 26228782 PMCID: PMC4520720 DOI: 10.3747/pdi.2014.00279] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 01/31/2015] [Indexed: 01/07/2023] Open
Abstract
Cardiovascular disease contributes significantly to the adverse clinical outcomes of peritoneal dialysis (PD) patients. Numerous cardiovascular risk factors play important roles in the development of various cardiovascular complications. Of these, loss of residual renal function is regarded as one of the key cardiovascular risk factors and is associated with an increased mortality and cardiovascular death. It is also recognized that PD solutions may incur significant adverse metabolic effects in PD patients. The International Society for Peritoneal Dialysis (ISPD) commissioned a global workgroup in 2012 to formulate a series of recommendations regarding lifestyle modification, assessment and management of various cardiovascular risk factors, as well as management of the various cardiovascular complications including coronary artery disease, heart failure, arrhythmia (specifically atrial fibrillation), cerebrovascular disease, peripheral arterial disease and sudden cardiac death, to be published in 2 guideline documents. This publication forms the first part of the guideline documents and includes recommendations on assessment and management of various cardiovascular risk factors. The documents are intended to serve as a global clinical practice guideline for clinicians who look after PD patients. The ISPD workgroup also identifies areas where evidence is lacking and further research is needed.
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Affiliation(s)
| | - K Scott Brimble
- St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Gillian Brunier
- Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada
| | - Stephen G Holt
- Division of Nephrology, The Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia
| | - Vivekanand Jha
- George Institute for Global Health India, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - David W Johnson
- University of Queensland at Princess Alexandra Hospital, Brisbane, Australia Centre for Kidney Disease Research, Translational Research Institute, Brisbane, Australia
| | - Shin-Wook Kang
- Department of Internal Medicine, College of Medicine, Severance Biomedical Science Institute, Yonsei University, Korea
| | - Jeroen P Kooman
- Division of Nephrology, University Hospital Maastricht, Maastricht, The Netherlands
| | - Mark Lambie
- Health Services Research Unit, Institute for Science and Technology in Medicine, Keele University, Keele, Staffordshire, United Kingdom
| | - Chris McIntyre
- School of Medicine, University of Nottingham, Royal Derby Hospital Centre, Derby, United Kingdom
| | - Rajnish Mehrotra
- Harborview Medical Center, Division of Nephrology/Department of Medicine, University of Washington, Washington, DC, United States
| | - Roberto Pecoits-Filho
- School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
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49
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What is the feasibility of implementing effective sodium reduction strategies to treat hypertension in primary care settings? A systematic review. J Hypertens 2015; 32:1388-94; discussion 1394. [PMID: 24694380 DOI: 10.1097/hjh.0000000000000182] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To evaluate whether efficacious counseling methods on sodium restriction can be successfully incorporated into primary care models for the management of hypertension. METHODS We searched MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Database of Abstracts of Reviews of Effects and Health Technology Assessment to identify randomized controlled trials of dietary counseling for salt intake reduction that reported significant reduction in 24-h urinary sodium and blood pressure levels among adults with untreated hypertension. Data extraction and assessment of reproducibility and feasibility were done in duplicate and any disagreements were resolved by consensus. RESULTS Six trials were included for assessment of methods as they were efficacious in reducing sodium intake (24-h urinary sodium excretion) by 73 to 93 mmol/day (intervention) vs. 3.2 to 12.5 mmol/day (control). This was paralleled with a reduction in blood pressure (-4 to -27 mmHg) between groups. In four of the six trials, the methods were described in sufficient detail to be reproducible, but in none of these trials were the 'counseling methods' feasible for application in primary care settings. Apart from multiple sessions of counseling, the reported interventions were supplemented with provision of prepared food, community cooking classes, and intensive inpatient training sessions. CONCLUSION Despite the availability of efficacious counseling methods for the reduction of sodium intake among newly diagnosed hypertensive patients (feasible within a clinical trial setting), none of these methods, in their present form, are suitable for incorporation into existing primary care settings in countries such as Canada, United States, and UK.
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Reddy V, Sridhar A, Machado RF, Chen J. High sodium causes hypertension: evidence from clinical trials and animal experiments. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2015; 13:1-8. [PMID: 25609366 DOI: 10.1016/s2095-4964(15)60155-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Hypertension is a cardiovascular disease affecting approximately one out of every seven people worldwide. High-sodium consumption has been generally accepted as a risk factor for developing hypertension. Today, global sodium consumption greatly exceeds guidelines recommended by all medical institutions. This review synthesizes the data of landmark mammalian and human studies which investigated the role of sodium in the pathogenesis of hypertension, along with modern studies questioning this relationship. Recent studies concerning the potential pathways by which high-sodium concentration induces hypertension were reviewed. Human trials and population studies revealed a strong correlation between high blood pressure and average dietary sodium; and animal studies found a dramatic reduction in vascular function in a variety of mammals treated with high-sodium diets. In spite of a few contrarian studies, we found overwhelming evidence that elevated sodium consumption could cause hypertension.
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Affiliation(s)
- Vamsi Reddy
- Section of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | - Arvind Sridhar
- Section of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | - Roberto F Machado
- Section of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | - Jiwang Chen
- Section of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA; E-mail:
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