1
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Lyons OD. Sleep disorders in chronic kidney disease. Nat Rev Nephrol 2024; 20:690-700. [PMID: 38789686 DOI: 10.1038/s41581-024-00848-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/02/2024] [Indexed: 05/26/2024]
Abstract
Sleep disorders are highly prevalent in chronic kidney disease (CKD) but are often under-recognized. Restless legs syndrome, which is common in CKD owing to issues with dopamine metabolism and is exacerbated by iron deficiency and uraemia, can lead to poor sleep quality and increased daytime fatigue. Insomnia is also prevalent in CKD, particularly in patients requiring dialysis, with increased sleep latency and sleep fragmentation being reported. The cause of insomnia in CKD is multifactorial - poor sleep habits and frequent napping during dialysis, uraemia, medications and mood disorders have all been suggested as potential contributing factors. Sleep apnoea and CKD are also now recognized as having a bi-directional relationship. Sleep apnoea is a risk factor for accelerated progression of CKD, and fluid overload, which is associated with kidney failure, can lead to both obstructive and central sleep apnoea. The presence of obstructive sleep apnoea in CKD can exacerbate the already heightened cardiovascular morbidity and mortality in these patients, as well as leading to daytime fatigue and reduced quality of life. Increased awareness, timely diagnosis and appropriate therapeutic interventions are essential to reduce the negative impact of sleep disorders in patients with kidney disease.
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Affiliation(s)
- Owen D Lyons
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
- Department of Medicine, Women's College Hospital, Toronto, Canada.
- Women's College Research Institute, Toronto, Ontario, Canada.
- Sleep Research Laboratory, Toronto Rehabilitation Institute, KITE-UHN, Toronto, Ontario, Canada.
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2
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Hou Y, Li Y, Xiao Z, Wang Z. Causal effects of obstructive sleep apnea on chronic kidney disease and renal function: a bidirectional Mendelian randomization study. Front Neurol 2024; 15:1323928. [PMID: 39296957 PMCID: PMC11408330 DOI: 10.3389/fneur.2024.1323928] [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: 11/24/2023] [Accepted: 08/23/2024] [Indexed: 09/21/2024] Open
Abstract
Background Observational studies have suggested an association between obstructive sleep apnea (OSA), chronic kidney disease (CKD), and renal function, and vice versa. However, the results from these studies are inconsistent. It remains unclear whether there are causal relationships and in which direction they might exist. Methods We used a two-sample Mendelian randomization (MR) method to investigate the bidirectional causal relation between OSA and 7 renal function phenotypes [creatinine-based estimated glomerular filtration rate (eGFRcrea), cystatin C-based estimated glomerular filtration rate (eGFRcys), blood urea nitrogen (BUN), rapid progress to CKD, rapid decline of eGFR, urinary albumin to creatinine ratio (UACR) and CKD]. The genome-wide association study (GWAS) summary statistics of OSA were retrieved from FinnGen Consortium. The CKDGen consortium and UK Biobank provided GWAS summary data for renal function phenotypes. Participants in the GWAS were predominantly of European ancestry. Five MR methods, including inverse variance weighted (IVW), MR-Egger, simple mode, weighted median, and weighted mode were used to investigate the causal relationship. The IVW result was considered the primary outcome. Then, Cochran's Q test and MR-Egger were used to detect heterogeneity and pleiotropy. The leave-one-out analysis was used for testing the stability of MR results. RadialMR was used to identify outliers. Bonferroni correction was applied to test the strength of the causal relationships (p < 3.571 × 10-3). Results We failed to find any significant causal effect of OSA on renal function phenotypes. Conversely, when we examined the effects of renal function phenotypes on OSA, after removing outliers, we found a significant association between BUN and OSA using IVW method (OR: 2.079, 95% CI: 1.516-2.853; p = 5.72 × 10-6). Conclusion This MR study found no causal effect of OSA on renal function in Europeans. However, genetically predicted increased BUN is associated with OSA development. These findings indicate that the relationship between OSA and renal function remains elusive and requires further investigation.
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Affiliation(s)
- Yawei Hou
- Institute of Chinese Medical Literature and Culture, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yameng Li
- The First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhenwei Xiao
- Department of Nephrology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhenguo Wang
- Institute of Chinese Medical Literature and Culture, Shandong University of Traditional Chinese Medicine, Jinan, China
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3
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Liu ZH, Wang LY, Hu ZF. Evaluation of risk factors related to sleep disorders in patients undergoing hemodialysis using a nomogram model. Medicine (Baltimore) 2024; 103:e37712. [PMID: 38608110 PMCID: PMC11018214 DOI: 10.1097/md.0000000000037712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 03/04/2024] [Indexed: 04/14/2024] Open
Abstract
This study aimed to investigate the risk factors related to sleep disorders in patients undergoing hemodialysis using a nomogram model. A cross-sectional survey was conducted in a hospital in Zhejiang province, China from January 1, 2020, to November 31, 2022 among patients undergoing hemodialysis. Dietary intake was assessed applying a Food Frequency Questionnaire. Sleep quality was evaluated by the Pittsburgh Sleep Quality Index. Evaluation of risk factors related to sleep disorders in patients undergoing hemodialysis was using a nomogram model. This study included 201 patients and 87 individuals (43.3%, 87/201) exhibited sleep disorders. The average age of included patients was 51.1 ± 9.0 years, with males accounting for 55.7% (112/201). Results from nomogram model exhibited that potential risk factors for sleep disorders in patients undergoing hemodialysis included female, advanced age, increased creatinine and alanine aminotransferase levels, as well as higher red meat consumption. Inversely, protective factors against sleep disorders in these patients included higher consumption of poultry, fish, vegetables, and dietary fiber. The C-index demonstrated a high level of discriminative ability (0.922). This study found that age, sex, and dietary factors were associated with sleep disorders in hemodialysis patients. Hemodialysis patients with sleep disorders require urgent dietary guidance.
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Affiliation(s)
- Zhang-hong Liu
- Department of Nephrology and Rheumatology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province, China
| | - Li-yong Wang
- Department of Nephrology and Rheumatology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province, China
| | - Zhen-fen Hu
- Department of Blood Purification, Wenzhou TCM Hospital of Zhejiang Chinese Medical University, Wenzhou, Zhejiang Province, China
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Peng Y, Huang H, Liao Y, Diao Y, Lin C, Liu Y, Xu C, Gao M, He Y, Yang G. Risk factors affecting the sleep quality of patients on dialysis: A single-center cross-sectional study. Medicine (Baltimore) 2024; 103:e37577. [PMID: 38552063 PMCID: PMC10977595 DOI: 10.1097/md.0000000000037577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/21/2024] [Indexed: 04/02/2024] Open
Abstract
Sleep quality is among the common complication in patients on dialysis and serious affect their health and quality of life; however, other associated risk factors are unclear. This study aimed to investigate the risk factors affecting sleep quality in patients on dialysis. Data were collected from 260 patients who met the inclusion criteria at out hospital from May 2023 to October 2023. Questionnaires were completed by patients, and biochemical indicators were obtained from past medical records. Univariate and multifactor analyses were used to find factors influencing sleep quality in patients on dialysis. Simple linear regression results showed that female, type of kidney primary disease, high systolic blood pressure (SBP), pruritus, pruritus frequency, restless legs syndrome (RLS), anxiety, and depression were associated with poor sleep quality. Blood biochemical parameters showed that low sodium and calcium levels and high ferritin levels were associated with poor sleep quality. Multiple linear regression statistics showed that female, pruritus, RLS, high SBP, depression, and high ferritin levels were associated with poor sleep quality. This study showed that female, chronic nephritis syndrome, high SBP, pruritus, RLS, low mood. and high ferritin levels were associated with poor sleep quality. Future development of individual nursing and targeted therapies is key to improving sleep quality in patients on dialysis.
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Affiliation(s)
- Yanmei Peng
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Huie Huang
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Yumei Liao
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Yuhan Diao
- Department of Medical Records & Statistics, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
- Intelligent Hospital Research Academy, Peking University Shenzhen Hospital, Shenzhen, China
| | - Chuangpeng Lin
- Department of Medical Records & Statistics, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
- Intelligent Hospital Research Academy, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yan Liu
- Department of Medical Records & Statistics, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
- Intelligent Hospital Research Academy, Peking University Shenzhen Hospital, Shenzhen, China
| | - Chunhua Xu
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Min Gao
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Yan He
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
| | - Guang Yang
- Division of Renal Medicine, Peking University Shenzhen Hospital, Peking University, Shenzhen, China
- Shenzhen Clinical Research Center for Urology and Nephrology, Shenzhen, China
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Hajomer HA, Elkhidir OA, Elawad SO, Elniema OH, Khalid MK, Altayib LS, Abdalla IA, Mahmoud TA. The burden of end-stage renal disease in Khartoum, Sudan: cost of illness study. J Med Econ 2024; 27:455-462. [PMID: 38390791 DOI: 10.1080/13696998.2024.2320506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/31/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND AND PURPOSE The incidence of end-stage renal disease (ESRD) in Sudan is increasing, affecting the economic status of patients, caregivers and society. This study aimed to measure ESRD's costs, including direct and morbidity indirect expenditures, and to investigate any associated factors and financial consequences. MATERIALS AND METHODS This cross-sectional study used a standardized questionnaire to collect data from 150 ESRD patients who had been receiving dialysis for at least one year before the time of data collection at 13 specialized renal centres in Khartoum state. Data about sociodemographic, clinical, and economic factors were gathered, and their relationship to the cost of ESRD was examined using both bivariate (Man Whitney test, Kruskal Wallis test and Spearman correlation) and multivariate analytical procedures (multivariate linear regression). RESULTS This study reported a median direct per capita ESRD cost of 38 600 SDG ($1 723.2 PPP) annually with an interquartile range of 69 319.3 SDG ($3 094.6 PPP). The median morbidity indirect cost was estimated to be 0.0 ± 3 352 SDG ($ 0.0 ± 149.6 PPP) per annum. In 28.8% of cases, the patients were their family's primary income earner and over 85% were covered by medical insurance. Our study found that none of the study variables were significantly associated with the total cost of ESRD. CONCLUSION AND LIMITATIONS Our findings point out considerable direct out-of-pocket expenses and productivity losses for patients and their households. However, these results should be carefully applied for comparison between the different countries due to differences in the cost of medical interventions and insurance coverage. Further longitudinal studies and studies on health finance and insurance policies are recommended.
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Affiliation(s)
- Hiba Ali Hajomer
- Community Medicine Department, National University, Khartoum, Sudan
| | | | | | | | | | - Lina S Altayib
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
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Gembillo G, Calimeri S, Tranchida V, Silipigni S, Vella D, Ferrara D, Spinella C, Santoro D, Visconti L. Lung Dysfunction and Chronic Kidney Disease: A Complex Network of Multiple Interactions. J Pers Med 2023; 13:jpm13020286. [PMID: 36836520 PMCID: PMC9966880 DOI: 10.3390/jpm13020286] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Chronic kidney disease (CKD) is a progressive disease that affects > 10% of the total population worldwide or >800 million people. CKD poses a particularly heavy burden in low- and middle-income countries, which are least able to cope with its consequences. It has become one of the leading causes of death worldwide and is one of the few non-communicable diseases where the number of related deaths has increased over the last two decades. The high number of people affected, and the significant negative impact of CKD should be a reason to increase efforts to improve prevention and treatment. The interaction of lung and kidney leads to highly complex and difficult clinical scenarios. CKD significantly affects the physiology of the lung by altering fluid homeostasis, acid-base balance and vascular tone. In the lung, haemodynamic disturbances lead to the development of alterations in ventilatory control, pulmonary congestion, capillary stress failure and pulmonary vascular disease. In the kidney, haemodynamic disturbances lead to sodium and water retention and the deterioration of renal function. In this article, we would like to draw attention to the importance of harmonising the definitions of clinical events in pneumology and renal medicine. We would also like to highlight the need for pulmonary function tests in routine clinical practise for the management of patients with CKD, in order to find new concepts for pathophysiological based disease-specific management strategies.
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Affiliation(s)
- Guido Gembillo
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
- Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, 98125 Messina, Italy
- Correspondence: ; Tel.: +39-00902212265
| | - Sebastiano Calimeri
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Valeria Tranchida
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Salvatore Silipigni
- Department of Biomedical Sciences and Morphologic and Functional Imaging, Policlinico “G. Martino’’, University of Messina, Via Consolare Valeria 1, 98100 Messina, Italy
| | - Davide Vella
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Domenico Ferrara
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Claudia Spinella
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Domenico Santoro
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Luca Visconti
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
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Prasad B, Gagarinova M, Sharma A. Five Things to Know About Restless Legs Syndrome in Patients on Dialysis. Can J Kidney Health Dis 2023; 10:20543581231164275. [PMID: 36994129 PMCID: PMC10041586 DOI: 10.1177/20543581231164275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Affiliation(s)
- Bhanu Prasad
- Division of Nephrology, Department of Medicine, Regina General Hospital, SK, Canada
- Bhanu Prasad, Division of Nephrology, Department of Medicine, Regina General Hospital, 1440, 14th Avenue, Regina, SK S4P 0W5, Canada.
| | | | - Aditi Sharma
- Dr. T Bhanu Prasad Medical Prof Corp, Regina, SK, Canada
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8
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Brzuszek A, Hazara AM, Bhandari S. The prevalence and potential aetiological factors associated with restless legs syndrome in patients with chronic kidney disease: a cross-sectional study. Int Urol Nephrol 2022; 54:2599-2607. [PMID: 35275357 DOI: 10.1007/s11255-022-03166-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 02/28/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND There is limited understanding of aetiological factors of and treatment options for restless leg syndrome (RLS) in patients with chronic kidney disease (CKD). This study aimed to estimate the prevalence of RLS in CKD patients and identify factors that may contribute to RLS. METHODS A questionnaire-based cross-sectional study of patients with CKD stage 4 (CKD 4), pre-dialysis stage 5 (CKD-5ND) and haemodialysis-dependent stage 5 (CKD-5D) was conducted. Eligible patients were enrolled from the local dialysis units and renal clinics. The International RLS Study Group rating scale was used to establish the diagnosis of RLS and quantify its severity. RESULTS 212 patients with CKD 4 (n = 92), CKD-5ND (n = 14) and CKD-5D (n = 106) were included. The overall prevalence of RLS was 32.1%. Women had a significantly higher odds of having RLS despite adjustment for age, diabetes, cardiovascular disease and whether patients were on dialysis (odds ratio 2.8 [95% confidence intervals 1.5-5.2]). In pre-dialysis groups, patients with RLS had significantly higher serum ferritin (323.9 [SD 338.1] vs 177.5 [SD 178.5] µg/L, p = 0.020) compared to non-RLS patients. In dialysis patients (CKD-5D), those with RLS had significantly higher total white cell (8.0 [SD 3.5] vs 6.8 [SD 1.9] × 109/L, p = 0.026) and neutrophil (6.4 [SD 3.9] vs 4.6 [SD1.7] × 109/L, p = 0.002) counts compared to patients without RLS. CONCLUSION RLS remains a significant problem in patients with CKD and may be related to underlying inflammation. Targeting this pathway may be useful. Prevalence of RLS, diagnosed using validated measures, is higher than previous reports. TRIAL REGISTRATION N/A (the current study is not a trial).
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Affiliation(s)
- Aleksandra Brzuszek
- Cardiology Department, Calderdale and Huddersfield NHS Foundation Trust, Salterhebble, Halifax, HX3 0PW, West Yorkshire, UK
| | - Adil M Hazara
- Department of Nephrology and Transplant Medicine, Hull Royal Infirmary, Hull University Teaching Hospitals NHS Trust, Anlaby Road, Hull, HU3 2JZ, UK.,Hull York Medical School, Hull, UK
| | - Sunil Bhandari
- Department of Nephrology and Transplant Medicine, Hull Royal Infirmary, Hull University Teaching Hospitals NHS Trust, Anlaby Road, Hull, HU3 2JZ, UK. .,Hull York Medical School, Hull, UK.
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9
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Kelly DM, Pendlebury ST, Rothwell PM. Associations of Chronic Kidney Disease With Dementia Before and After Transient Ischemic Attack and Stroke: Population-Based Cohort Study. Neurology 2022; 98:e711-e720. [PMID: 34996878 PMCID: PMC8865890 DOI: 10.1212/wnl.0000000000013205] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 11/23/2021] [Indexed: 11/29/2022] Open
Abstract
Background and Objectives Individuals with chronic kidney disease (CKD) appear to be at increased risk of cognitive impairment, with both vascular and neurodegenerative mechanisms postulated. To explore the vascular hypothesis, we studied the association between CKD and dementia before and after TIA and stroke. Methods In a prospective, population-based cohort study of TIA and stroke (Oxford Vascular Study; 2002–2012), pre-event and new postevent dementia were ascertained through direct patient assessment and follow-up for 5 years, supplemented by review of hospital/primary care records. Associations between pre-event dementia and CKD (defined as an estimated glomerular filtration rate [eGFR] <60 mL/min/1.73 m2) were examined using logistic regression and between postevent dementia and CKD using Cox and competing risk regression models, adjusted for age, sex, education, stroke severity, prior stroke, white matter disease, diabetes mellitus, and dysphasia. Results Among 2,305 patients with TIA/stroke (median [interquartile range] age, 77 [67–84] years, 1,133 [49%] male, 688 [30%] TIA), 1,174 (50.9%) had CKD. CKD was associated with both pre-event (odds ratio [OR] 2.04 [95% confidence interval (CI) 1.52–2.72]; p < 0.001) and postevent dementia (hazard ratio [HR] 2.01 [95% CI 1.65–2.44]; p < 0.001), but these associations attenuated after adjustment for covariates (OR 0.92 [0.65–1.31]; p = 0.65 and HR 1.09 [0.85–1.39]; p = 0.50). The results were similar when a competing risk model was used (subdistribution HR [SHR] 1.74 [1.43–2.12]; p < 0.001, attenuating to 1.01 [0.78–1.33]; p = 0.92 with adjustment). CKD was more strongly associated with late (>1 year) postevent dementia (SHR 2.32 [1.70–3.17]; p < 0.001), particularly after TIA and minor stroke (SHR 3.08 [2.05–4.64]; p < 0.001), but not significantly so after adjustment (SHR 1.53 [0.90–2.60]; p = 0.12). Discussion In patients with TIA and stroke, CKD was not independently associated with either pre- or postevent dementia, suggesting that renal-specific mechanisms are unlikely to play an important role in aetiology.
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Affiliation(s)
- Dearbhla M Kelly
- Wolfson Center for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, United Kingdom
| | - Sarah T Pendlebury
- Wolfson Center for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, United Kingdom
| | - Peter M Rothwell
- Wolfson Center for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, United Kingdom.
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10
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Diaz S, Abad K, Patel SR, Unruh ML. Emerging Treatments for Insomnia, Sleep Apnea, and Restless Leg Syndrome Among Dialysis Patients. Semin Nephrol 2022; 41:526-533. [PMID: 34973697 DOI: 10.1016/j.semnephrol.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Sleep disturbances are highly prevalent in patients with predialysis chronic kidney disease, end-stage kidney disease, and after a kidney transplant. They contribute to impairment in daily function and are associated with a high burden of physical and psychiatric symptoms, decreased quality of life, and increased morbidity and mortality. Sleep disturbances also may precipitate and accelerate kidney disease progression. They often evolve across the spectrum of kidney dysfunction and may persist or re-emerge in kidney transplant recipients. Investigation into the multifaceted and dynamic relationships between sleep disturbance and chronic kidney disease requires consideration of myriad contributors including the progression of kidney disease itself, the role of treatment via dialysis and kidney transplant, psychosocial factors, and underlying sleep disorders. Despite sleep disturbance being identified as a priority to address by patients and caregivers, sleep disorders including insomnia, sleep apnea, and restless leg syndrome remain under-recognized and undertreated, and innovation in their management remains modest. In this article, we review the relationships between sleep disturbance and kidney disease, the impact of sleep disturbance and sleep disorders on symptom burden and mental health, and treatment opportunities that may address overlapping symptoms across the spectrum of kidney disease and that could improve patient-related and clinical outcomes.
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Affiliation(s)
- Shanna Diaz
- Department of Internal Medicine, University of New Mexico, Albuquerque, NM
| | - Kashif Abad
- Department of Internal Medicine, University of New Mexico, Albuquerque, NM
| | - Sanjay R Patel
- Pulmonary, Sleep and Critical Care, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Mark L Unruh
- Department of Internal Medicine, University of New Mexico, Albuquerque, NM; Nephrology Section, New Mexico Veterans Hospital, Albuquerque, NM.
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11
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To KW, Chan TO, Chan WC, Choo KL, Hui DSC. Using a portable monitoring device for diagnosing obstructive sleep apnea in patients with multiple coexisting medical illnesses. THE CLINICAL RESPIRATORY JOURNAL 2021; 15:1104-1112. [PMID: 34224640 DOI: 10.1111/crj.13416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The existing guidelines recommend type III devices should be used in patients without significant comorbidities. OBJECTIVES This study explored the reliability of using a type III device in patients with significant medical conditions to diagnose sleep apnea. METHODS Patients had an overnight sleep study conducted simultaneously with both polysomnography (PSG) and a type III (NOX-T3) monitoring device. All patients had stable multiple coexisting medical illnesses without any changes in medications and conditions within 1 month of sleep study. RESULTS Between July 2019 and March 2020, there were altogether 74 patients recruited with analyzable data. Five major disease groups were identified in the cohort: psychiatric illnesses, stroke, ischemic heart diseases (IHDs), chronic kidney diseases (CKDs), and others. Psychiatric patients with medications were found to have the lowest apnea hypopnea index (AHI) (23.7 per hour) and arousal index (46.6 per hour). The CKD group had the highest mean arousal index (71.4 per hour) and obstructive apnea count (110.2). NOX-T3 respiratory event index (REI) was significantly lower than the PSG AHI (mean REI 31.4 vs. mean AHI: 42.2). The number of patients with no/mild/moderate/severe obstructive sleep apnea (OSA) diagnosed by NOX-T3 and PSG was 7/17/19/31 and 5/11/20/38, respectively. CONCLUSION NOX-T3 device can reliably diagnose OSA in patients with different stable coexisting medical conditions. There is a tendency for underestimation of the severity of the OSA with NOX-T3 in patients with coexisting medical conditions especially with sedative medications. A positive NOX-T3 reliably diagnoses OSA whereas a negative NOX-T3 result needs to be interpreted with caution.
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Affiliation(s)
- Kin Wang To
- Respiratory Division, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.,SH Ho Sleep Apnea Management Center, The Chinese University of Hong Kong, Hong Kong, China
| | - Tat On Chan
- Respiratory Division, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.,SH Ho Sleep Apnea Management Center, The Chinese University of Hong Kong, Hong Kong, China
| | - Wing Chi Chan
- Respiratory Division, Department of Medicine, North District Hospital, Hong Kong, China
| | - Kah Lin Choo
- Respiratory Division, Department of Medicine, North District Hospital, Hong Kong, China
| | - David S C Hui
- Respiratory Division, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.,SH Ho Sleep Apnea Management Center, The Chinese University of Hong Kong, Hong Kong, China
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12
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Metzger M, Abdel-Rahman EM, Boykin H, Song MK. A Narrative Review of Management Strategies for Common Symptoms in Advanced CKD. Kidney Int Rep 2021; 6:894-904. [PMID: 33912741 PMCID: PMC8071652 DOI: 10.1016/j.ekir.2021.01.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 12/19/2022] Open
Abstract
Patients with advanced chronic kidney disease (CKD) experience multiple bothersome symptoms, undermining their quality of life (QOL). With growing attention to the importance of symptom management in advanced CKD, the evidence regarding symptoms is increasing. In this review, we briefly summarize the current evidence of effective pharmacologic and nonpharmacologic interventions to improve symptoms and QOL in patients with advanced CKD, including those on dialysis. We focused on symptoms that are commonly experienced by patients, such as pain, fatigue, sleep disturbances, itching, nausea and vomiting, cognitive impairment, and anxiety and depression. We noted that research in symptom science focused on improving symptom management in CKD is still very limited. In addition to the lack of clinical practice guidelines to address those common symptoms, the major gaps in the current literature include the evidence regarding mechanistic pathways to inform the development of effective symptom management for CKD populations, the evidence to confirm effective pharmacologic interventions in other populations for CKD populations, and research on how to incorporate effective symptom management approaches into clinical care. Although improving mortality remains as an important area in the kidney community, there is an urgent need to focus on improving symptom management to improve QOL in advanced CKD.
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Affiliation(s)
- Maureen Metzger
- University of Virginia School of Nursing, Charlottesville, Virginia, USA
| | - Emaad M. Abdel-Rahman
- Division of Nephrology, Nephrology, University of Virginia, Charlottesville, Virginia, USA
| | - Heather Boykin
- Kidney Palliative Care Clinic, University of North Carolina Healthcare, UNC Medical Center, Chapel Hill, North Carolina, USA
| | - Mi-Kyung Song
- Center for Nursing Excellence in Palliative Care, Nell Hudgson Woodruff School of Nursing, Emory University, Atlanta, Georgia, USA
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13
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De Silva I, Evangelidis N, Hanson CS, Manera K, Guha C, Scholes-Robertson N, Craig JC, Johnson D, Cho Y, Viecelli AK, Tong A. Patient and caregiver perspectives on sleep in dialysis. J Sleep Res 2020; 30:e13221. [PMID: 33103303 DOI: 10.1111/jsr.13221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/27/2020] [Accepted: 09/28/2020] [Indexed: 11/30/2022]
Abstract
Sleep disturbances are common among patients receiving dialysis and are associated with an increased risk of mortality and morbidity, and impaired quality of life. Despite being highly prioritised by patients, sleep problems remain under-diagnosed and inadequately managed. The aim of the present study was to describe the perspectives of patients receiving dialysis and their caregivers on sleep. We extracted qualitative data on sleep from 26 focus groups, two international Delphi surveys, and two consensus workshops involving 644 patients and caregivers from 86 countries as part of the Standardised Outcomes in Nephrology-Haemodialysis and -Peritoneal Dialysis (SONG-HD/SONG-PD) initiatives. The responses were from patients aged ≥18 years receiving haemodialysis or peritoneal dialysis, and their caregivers. We analysed the data using thematic analysis with five themes identified: constraining daily living (with subthemes of: battling intrusive tiredness, exacerbating debilitating conditions, broken and incapacitated); roadblocks in relationships (unable to meet family needs, antipathy due to misunderstanding, wreaking emotional havoc); burden on caregivers (stress on support persons, remaining alert to help); losing enjoyment (limiting social contact, disempowerment in life); and undermining mental resilience (aggravating low mood, diminishing coping skills, reducing functional ability). Sleep disturbances are exhausting for patients on dialysis and pervade all aspects of their lives including the ability to do daily tasks, and maintaining relationships, mental and emotional well-being. Better assessment and management of sleep problems in dialysis is needed, which may lead to improvements in overall health and quality of life.
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Affiliation(s)
- Iresha De Silva
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Department of Community Paediatrics, Liverpool Community Health Centre, Liverpool, NSW, Australia
| | - Nicole Evangelidis
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Camilla S Hanson
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Karine Manera
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Chandana Guha
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Nicole Scholes-Robertson
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Jonathan C Craig
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - David Johnson
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, QLD, Australia.,Australasian Kidney Trials Network, Centre for Health Services Research, University of Queensland, Brisbane, QLD, Australia.,Translational Research Institute, Brisbane, QLD, Australia
| | - Yeoungiee Cho
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, QLD, Australia.,Australasian Kidney Trials Network, Centre for Health Services Research, University of Queensland, Brisbane, QLD, Australia.,Translational Research Institute, Brisbane, QLD, Australia
| | - Andrea K Viecelli
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, QLD, Australia.,Australasian Kidney Trials Network, Centre for Health Services Research, University of Queensland, Brisbane, QLD, Australia.,Translational Research Institute, Brisbane, QLD, Australia
| | - Allison Tong
- Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia.,Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
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14
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Salib M, Memon AN, Gowda AS, Rallabhandi B, Bidika E, Fayyaz H, Cancarevic I. Dialysis Patients With Restless Leg Syndrome: Can We Relieve Their Suffering? Cureus 2020; 12:e10053. [PMID: 32999776 PMCID: PMC7520405 DOI: 10.7759/cureus.10053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Restless leg syndrome (RLS), also called Willis Ekbom disease, can be described as an unpleasant feeling that intensely urges the patients to move their lower limbs. RLS is classified into primary and secondary. It is one of the common complications in hemodialysis patients, and it impairs patients’ quality of life. Unfortunately, it is an underdiagnosed and undertreated disorder. In this review article, we performed a literature search using the PubMed database to compare different treatment modalities for RLS in patients with end-stage renal disease (ESRD) on regular hemodialysis. Many of the non-pharmacologic modalities of treatment are cost-effective and safer than pharmacologic therapy. Given the small sample size of the studies and short follow up duration, we should consider conducting studies on a larger number of patients and for longer periods of time to assess the efficacy and safety of different treatment patterns for RLS in hemodialysis patients. We hope to raise awareness about this neurologic condition in hemodialysis patients.
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Affiliation(s)
- Marina Salib
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Areeba N Memon
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Asavari S Gowda
- Research, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Bhavana Rallabhandi
- Neurology, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Erjola Bidika
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Hafsa Fayyaz
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Ivan Cancarevic
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
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15
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Viggiano D, Wagner CA, Martino G, Nedergaard M, Zoccali C, Unwin R, Capasso G. Mechanisms of cognitive dysfunction in CKD. Nat Rev Nephrol 2020; 16:452-469. [PMID: 32235904 DOI: 10.1038/s41581-020-0266-9] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2020] [Indexed: 02/07/2023]
Abstract
Cognitive impairment is an increasingly recognized major cause of chronic disability and is commonly found in patients with chronic kidney disease (CKD). Knowledge of the relationship between kidney dysfunction and impaired cognition may improve our understanding of other forms of cognitive dysfunction. Patients with CKD are at an increased risk (compared with the general population) of both dementia and its prodrome, mild cognitive impairment (MCI), which are characterized by deficits in executive functions, memory and attention. Brain imaging in patients with CKD has revealed damage to white matter in the prefrontal cortex and, in animal models, in the subcortical monoaminergic and cholinergic systems, accompanied by widespread macrovascular and microvascular damage. Unfortunately, current interventions that target cardiovascular risk factors (such as anti-hypertensive drugs, anti-platelet agents and statins) seem to have little or no effect on CKD-associated MCI, suggesting that the accumulation of uraemic neurotoxins may be more important than disturbed haemodynamic factors or lipid metabolism in MCI pathogenesis. Experimental models show that the brain monoaminergic system is susceptible to uraemic neurotoxins and that this system is responsible for the altered sleep pattern commonly observed in patients with CKD. Neural progenitor cells and the glymphatic system, which are important in Alzheimer disease pathogenesis, may also be involved in CKD-associated MCI. More detailed study of CKD-associated MCI is needed to fully understand its clinical relevance, underlying pathophysiology, possible means of early diagnosis and prevention, and whether there may be novel approaches and potential therapies with wider application to this and other forms of cognitive decline.
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Affiliation(s)
- Davide Viggiano
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.,Biogem Scarl, Ariano Irpino, Italy
| | - Carsten A Wagner
- Institute of Physiology, University of Zurich, Zurich, Switzerland, and National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
| | - Gianvito Martino
- IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - Maiken Nedergaard
- University of Rochester Medical Center, School of Medicine and Dentistry, Rochester, NY, USA
| | - Carmine Zoccali
- Institute of Clinical Physiology, National Research Council (CNR), Reggio Calabria Unit, Reggio Calabria, Italy
| | - Robert Unwin
- Department of Renal Medicine, University College London (UCL), Royal Free Campus, London, UK.,Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Cambridge, UK
| | - Giovambattista Capasso
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy. .,Biogem Scarl, Ariano Irpino, Italy.
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16
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Abstract
PURPOSE OF REVIEW Obstructive sleep apnea (OSA) is highly prevalent in patients with chronic kidney disease (CKD). The relationship between OSA and CKD is likely to be bi-directional. On one hand, the presence of OSA leads to intermittent hypoxia, sympathetic nervous system activity, and hypertension, all of which may have deleterious effects on kidney function. On the other hand, in patients with end-stage renal disease (ESRD), intensification of renal replacement therapy has been shown to attenuate sleep apnea severity, suggesting that the renal disease itself contributes to the pathogenesis of OSA. The present review describes our current understanding of the bi-directional relationship between OSA and CKD. RECENT FINDINGS Studies suggest that the presence of OSA and nocturnal hypoxia may lead to worsening of kidney function. One potential mechanism is activation of the renin-angiotensin system by OSA, an effect which may be attenuated by CPAP therapy. In ESRD, fluid overload plays an important role in the pathogenesis of OSA and fluid removal by ultrafiltration leads to marked improvements in sleep apnea severity. SUMMARY OSA is associated with accelerated loss of kidney function. In patients with ESRD, fluid overload plays an important role in the pathogenesis of OSA.
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17
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Gu YH, Yang XH, Pan LH, Zhan XL, Guo LL, Jin HM. Additional hemoperfusion is associated with improved overall survival and self-reported sleep disturbance in patients on hemodialysis. Int J Artif Organs 2019; 42:347-353. [PMID: 30917741 DOI: 10.1177/0391398819837546] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Introduction: Patients with maintenance hemodialysis have experienced long-standing sleep disturbance. In this study, we attempted to explore whether long-term hemoperfusion could improve sleep and increase the overall survival in hemodialysis patients. Methods: A total of 158 patients, who underwent routine hemodialysis, were assessed in this study. These patients were computer-matched into two groups, with one group including 80 patients with absolute hemodialysis and the other consisting of 78 cases with hemodialysis in combination with hemoperfusion. Hemoperfusion was performed 1–2 times biweekly, with each session lasting 2 h. Self-reported sleep disturbance was evaluated before and after the observational time (2-year period); sleep quality was measured using the Pittsburgh Sleep Quality Index. Findings: Using multivariate regression analyses, we found sleep duration was associated with age, diabetes, low income, pruritus, hyperphosphatemia, hypercalcemia, high parathyroid hormone, and hemoglobin ( P < 0.001). The overall survival rate of the hemodialysis in combination with hemoperfusion group was significantly higher than that of the absolute hemodialysis group ( P < 0.05) after adjusting for sex, age, and diabetes. A 2-year hemoperfusion therapy was associated with improved sleep disturbance and sleep efficiency; this was accompanied by an increase in nocturnal melatonin levels. Furthermore, there was a significant difference in the first hospitalization between the hemodialysis and hemodialysis in combination with hemoperfusion groups ( P < 0.01). Discussion: Our results indicated that hemoperfusion in combination with hemodialysis is associated with an increase in the overall survival and improved sleep disorders in hemodialysis patients.
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Affiliation(s)
- Yan Hong Gu
- Division of Nephrology, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai, China
| | - Xiu Hong Yang
- Division of Nephrology, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai, China
| | - Li Hua Pan
- Division of Nephrology, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai, China
| | - Xiao Li Zhan
- Division of Nephrology, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai, China
| | - Li Li Guo
- Hemodialysis Center, Bao Shan Branch of No.1 People’s Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Hui Min Jin
- Division of Nephrology, Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, Shanghai, China
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18
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Eneanya ND, Maddux DW, Reviriego-Mendoza MM, Larkin JW, Usvyat LA, van der Sande FM, Kooman JP, Maddux FW. Longitudinal patterns of health-related quality of life and dialysis modality: a national cohort study. BMC Nephrol 2019; 20:7. [PMID: 30621634 PMCID: PMC6325821 DOI: 10.1186/s12882-018-1198-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 12/28/2018] [Indexed: 12/18/2022] Open
Abstract
Background Health-related quality of life (HrQoL) varies among dialysis patients. However, little is known about the association of dialysis modality with HrQoL over time. We describe longitudinal patterns of HrQoL among chronic dialysis patients by treatment modality. Methods National retrospective cohort study of adult patients who initiated in-center dialysis or a home modality (peritoneal or home hemodialysis) between 1/2013 and 6/2015. Patients remained on the same modality for the first 120 days of the first two years. HrQoL was assessed by the Kidney Disease and Quality of Life-36 (KDQOL) survey in the first 120 days of the first two years after dialysis initiation. Home modality patients were matched to in-center patients in a 1:5 fashion. Results In-center (n=4234) and home modality (n=880) patients had similar demographic and clinical characteristics. In-center dialysis patients had lower mean KDQOL scores across several domains compared to home modality patients. For patients who remained on the same modality, there was no change in HrQoL. However, there were trends towards clinically meaningful changes in several aspects of HrQoL for patients who switched modalities. Specifically, physical functioning decreased for patients who switched from home to in-center dialysis (p< 0.05). Conclusions Among a national cohort of chronic dialysis patients, there was a trend towards different patterns of HrQoL life that were only observed among patients who changed modality. Patients who switched from home to in-center modalities had significant lower physical functioning over time. Providers and patients should be mindful of HrQoL changes that may occur with dialysis modality change. Electronic supplementary material The online version of this article (10.1186/s12882-018-1198-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nwamaka D Eneanya
- Renal-Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, 307 Blockley Hall, 423 Guardian Drive, Philadelphia, PA, 19104, USA.
| | | | | | - John W Larkin
- Fresenius Medical Care North America, Waltham, MA, USA
| | - Len A Usvyat
- Fresenius Medical Care North America, Waltham, MA, USA
| | - Frank M van der Sande
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
| | - Jeroen P Kooman
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands
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19
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Li L, Tang X, Kim S, Zhang Y, Li Y, Fu P. Effect of nocturnal hemodialysis on sleep parameters in patients with end-stage renal disease: a systematic review and meta-analysis. PLoS One 2018; 13:e0203710. [PMID: 30204790 PMCID: PMC6133364 DOI: 10.1371/journal.pone.0203710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/24/2018] [Indexed: 02/05/2023] Open
Abstract
Introduction Recently, a small but growing literature has depicted the beneficial effects of nocturnal hemodialysis (NHD) over conventional hemodialysis (CHD) in the fields of sleep disorders such as sleep apnea. The impact of various dialysis models on sleep disorders, however, has not been determined. The objective of our meta-analysis is to examine the potential effects of NHD, compared with CHD, on sleep disorders in HD patients. Methods Several electronic databases including PubMed, EMBASE, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov and CNKI were searched, using the search terms “nocturnal” (or “nightly”) and “dialysis” (or “hemodialysis” or “renal dialysis”) from the earliest available date of indexing to March 2018. Two authors independently extracted data, evaluated the study quality, and conducted random-effects meta-analyses using STATA 12.0. Results Of 1789 potentially relevant citations, 9 fulfilled eligibility criteria, consisting of 6 single-arm studies (comparing pre- and post-intervention outcomes), 1 observational study, and 2 randomized controlled trials (a total of 286 participants). Regarding objective sleep assessments, conversion from CHD to NHD resulted in a significant reduction in the AHI (Mean difference was -14.90; 95% CI, -20.12 to -9.68), a significant increase of SaO2 (Mean difference was 1.38%; 95% CI, 0.35% to 2.42%), and a significant decrease of TST (Mean difference was -0.31; 95% CI, -0.47 to -0.15). The trends were even stronger in the HD patients with sleep disorders. However, regarding subjective sleep assessments, improved sleep quality was found in the prospective pre-post intervention studies and cohort studies, while no significant improvements were found in the randomized controlled trials. Conclusion Although a significant improvement of sleep apnea was observed by switching from CHD to NHD, it may not yield a net benefit in overall subjective sleep quality.
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Affiliation(s)
- Lingzhi Li
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, China
| | - Xi Tang
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, China
| | - Sehee Kim
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Ye Zhang
- Sleep Medicine Center, West China Hospital of Sichuan University, Chengdu, China
| | - Yi Li
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
- Kidney Epidemiology and Cost Center, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Ping Fu
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, China
- West China Biostatistics and Cost-Benefit Analysis Center, West China Hospital of Sichuan University, Chengdu, China
- * E-mail:
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