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Jin J, Cheng M, Wu X, Zhang H, Zhang D, Liang X, Qian Y, Guo L, Zhang S, Bai Y, Xu J. Circulating miR-129-3p in combination with clinical factors predicts vascular calcification in hemodialysis patients. Clin Kidney J 2024; 17:sfae038. [PMID: 38524234 PMCID: PMC10960567 DOI: 10.1093/ckj/sfae038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Indexed: 03/26/2024] Open
Abstract
Background Vascular calcification (VC) commonly occurs and seriously increases the risk of cardiovascular events and mortality in patients with hemodialysis. For optimizing individual management, we will develop a diagnostic multivariable prediction model for evaluating the probability of VC. Methods The study was conducted in four steps. First, identification of miRNAs regulating osteogenic differentiation of vascular smooth muscle cells (VSMCs) in calcified condition. Second, observing the role of miR-129-3p on VC in vitro and the association between circulating miR-129-3p and VC in hemodialysis patients. Third, collecting all indicators related to VC as candidate variables, screening predictors from the candidate variables by Lasso regression, developing the prediction model by logistic regression and showing it as a nomogram in training cohort. Last, verifying predictive performance of the model in validation cohort. Results In cell experiments, miR-129-3p was found to attenuate vascular calcification, and in human, serum miR-129-3p exhibited a negative correlation with vascular calcification, suggesting that miR-129-3p could be one of the candidate predictor variables. Regression analysis demonstrated that miR-129-3p, age, dialysis duration and smoking were valid factors to establish the prediction model and nomogram for VC. The area under receiver operating characteristic curve of the model was 0.8698. The calibration curve showed that predicted probability of the model was in good agreement with actual probability and decision curve analysis indicated better net benefit of the model. Furthermore, internal validation through bootstrap process and external validation by another independent cohort confirmed the stability of the model. Conclusion We build a diagnostic prediction model and present it as an intuitive tool based on miR-129-3p and clinical indicators to evaluate the probability of VC in hemodialysis patients, facilitating risk stratification and effective decision, which may be of great importance for reducing the risk of serious cardiovascular events.
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Affiliation(s)
- Jingjing Jin
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Meijuan Cheng
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Xueying Wu
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Haixia Zhang
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Dongxue Zhang
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Xiangnan Liang
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Yuetong Qian
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Liping Guo
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Shenglei Zhang
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Yaling Bai
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
| | - Jinsheng Xu
- Departments of Nephrology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, PR China
- Hebei Key Laboratory of Vascular Calcification in Kidney Disease, Shijiazhuang, PR China
- Hebei Clinical Research Center for Chronic Kidney Disease, Shijiazhuang, PR China
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Chiu KJ, Chen SC, Su WY, Chang YY, Chang KC, Li CH, Wu YJ, Wu DW, Kuo CH. The association of peritoneal dialysis and hemodialysis on mitral and aortic valve calcification associated mortality: a meta-analysis. Sci Rep 2024; 14:4748. [PMID: 38413701 PMCID: PMC10899208 DOI: 10.1038/s41598-024-55326-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/22/2024] [Indexed: 02/29/2024] Open
Abstract
Cardiac valve calcification (CVC), characterized by the accumulation of calcium in the heart valves, is highly prevalent among patients undergoing dialysis. This meta-analysis aimed to provide an updated summary of recent studies on the prognostic value of CVC in patients undergoing dialysis. We conducted a search of PubMed, Embase, and Web of Science to identify observational studies investigating cardiovascular or all-cause mortality associated with CVC in dialysis patients until March 2023. Hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) were calculated for the meta-analysis, and the strength and significance of the associations between CVC and mortality outcomes in dialysis patients were assessed. From 6218 initially identified studies, we included 10 critical studies with a total of 3376 dialysis patients in a further meta-analysis. Pooled analyses demonstrated a significant association between CVC and an elevated risk of all-cause and cardiovascular mortality in dialysis patients. In our study, we discovered HRs of 1.592 (95% CI 1.410-1.797) for all-cause mortality and 2.444 (95% CI 1.632-3.659) for cardiovascular mortality. Furthermore, subgroup analysis revealed elevated all-cause mortality among patients with mitral valve calcification (HR 1.572; 95% CI 1.200-2.060) compared to those with aortic valve calcification (HR 1.456; 95% CI 1.105-1.917). Similarly, patients undergoing peritoneal dialysis faced a greater risk for all-cause mortality (HR 2.094; 95% CI 1.374-3.191) than those on hemodialysis (HR 1.553; 95% CI 1.369-1.763). This highlights the possibility of CVC being an independent risk factor for dialysis patients, particularly in relation to mitral valve calcification or peritoneal dialysis.
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Affiliation(s)
- Kuan-Jung Chiu
- School of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Szu-Chia Chen
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80756, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 812, Taiwan
- Teaching and Research Center of Kaohsiung Municipal Siaogang Hospital, Kaohsiung, 812, Taiwan
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Wei-Yu Su
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80756, Taiwan
- Department of General Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Yong-Yuan Chang
- Department of Healthcare Administration and Medical Informatics, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Kai-Chao Chang
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 812, Taiwan
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chiu Hui Li
- Doctoral Degree Program, Department of International Business, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
- Health Management and Occupational Safety and Health Center of Kaohsiung Municipal Siaogang Hospital, Kaohsiung, 812, Taiwan
| | - Ying-Jhen Wu
- Teaching and Research Center of Kaohsiung Municipal Siaogang Hospital, Kaohsiung, 812, Taiwan
| | - Da-Wei Wu
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 812, Taiwan.
- Teaching and Research Center of Kaohsiung Municipal Siaogang Hospital, Kaohsiung, 812, Taiwan.
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Doctoral Degree Program, Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Chao-Hung Kuo
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 812, Taiwan
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
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Xiao K, Cao H, Liu L, Yang B, Dai H, Wang S, Li R, Wen Z, Lu Z, Xiao L, Kang Z, Feng H. Relation Between Calcium-Phosphorus Product and Total Coronary Artery Occlusion in a Nonchronic Kidney Disease Population: A Cross-Sectional Study. Am J Cardiol 2024; 211:239-244. [PMID: 37979640 DOI: 10.1016/j.amjcard.2023.11.042] [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: 10/06/2023] [Revised: 11/03/2023] [Accepted: 11/11/2023] [Indexed: 11/20/2023]
Abstract
Excessive calcium-phosphorus product (Ca-P product) in patients with chronic kidney disease (CKD) is associated with coronary artery calcification and coronary artery disease, but the relation between Ca-P product and coronary artery disease in non-CKD populations has rarely been reported. Therefore, we designed a cross-sectional study to investigate the role of Ca-P product in total coronary artery occlusion (TCAO) in a non-CKD population. We reviewed 983 patients who underwent coronary angiography at Guangyuan Central Hospital from February 2018 to January 2020. Ca-P product (mg2/dl2) was calculated as Ca (mmol/L) × 4 × P (mmol/L) × 3.1 and was analyzed as a continuous and tertiary variable. TCAO was defined as complete occlusion of any coronary artery by coronary angiography (thrombolysis in myocardial infarction flow grade 0). Statistical analysis was performed using univariate and multivariate logistic regression models and restricted cubic splines. Univariate logistic regression analysis showed a statistically significant association between Ca-P product and TCAO (odds ratio [OR] 0.97, 95% confidence interval [CI] 0.95 to 0.99, p <0.001). After stepwise adjustment for covariates, the risk of TCAO was reduced by 40% in the high versus low Ca-P group (OR 0.6, 95% CI 0.38 to 0.95, p = 0.031), and the risk of TCAO was predicted to decrease by 4% (OR 0.96, 95% CI 0.94 to 0.99, p = 0.006) for each unit increase in Ca-P product. Restricted cubic splines showed a nonlinear relation between Ca-P product and TCAO, with a significant decrease in the risk of TCAO after reaching 27.46 (nonlinear p = 0.047). In conclusion, in non-CKD populations, a higher Ca-P product (≥27.46 mg2/dl2) may help avoid TCAO.
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Affiliation(s)
- Kaiyong Xiao
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Huili Cao
- Department of Cardiology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Liang Liu
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Bin Yang
- Department of Cardiology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.
| | - Huwei Dai
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Sirong Wang
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ruining Li
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zeyu Wen
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhaoshan Lu
- The Second Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Lian Xiao
- Department of Cardiology, Guangyuan Central Hospital, Guangyuan, Sichuan, China
| | - Zhou Kang
- Medical Statistics, Guangyuan Central Hospital, Guangyuan, Sichuan, China
| | - Hui Feng
- Medical Laboratory Center, Guangyuan Central Hospital, Guangyuan, Sichuan, China
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Bai J, Zhang A, Zhang Y, Ren K, Ren Z, Zhao C, Wang Q, Cao N. Abdominal aortic calcification score can predict all-cause and cardiovascular mortality in maintenance hemodialysis patients. Ren Fail 2023; 45:2158869. [PMID: 36637006 PMCID: PMC9848265 DOI: 10.1080/0886022x.2022.2158869] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Purpose: Abdominal aortic calcification (AAC) assessed by using standard lateral lumbar radiographs can be graded, and composite summary scores (range, 0-24) have been shown to be highly predictive of subsequent cardiovascular morbidity and mortality in hemodialysis (HD) patients. However, few studies have sought to determine the optimal AAC score cutoff values for the prediction of mortality among HD patients.Methods: This retrospective cohort study included 408 hemodialysis patients. AAC severity was quantified by the AAC score, which was measured by lateral lumbar radiography with complete follow-up data from January 2015 to December 2021. We used receiver operating characteristic (ROC) analysis to find the cutoff AAC value for the prediction of mortality. The Kaplan-Meier method was used to analyze all-cause and cardiovascular mortality.Results: The cutoff calcification score for the prediction of mortality was 4.5 (sensitivity, 67.3%; specificity, 70.4%). The patients with AAC scores above 4.5 had significantly higher all-cause (log-rank p < 0.001) and cardiovascular (log-rank p < 0.001) mortality rates than those with AAC scores below 4.5. In the multivariate regression analyses, an AAC score above 4.5 was a significant factor associated with all-cause mortality (HR: 2.079, p = 0.002) and cardiovascular mortality (HR: 2.610, p < 0.001).Conclusions: AAC is a reliable aortic calcification marker. HD patients with an AAC score > 4.5 have significantly elevated all-cause and cardiovascular mortality compared with those with an AAC score ≤ 4.5. AAC was a better predictor than cardiac valve calcification for mortality in HD patients.
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Affiliation(s)
- Jiuxu Bai
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Aihong Zhang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China,Department of Nephrology, Xi’an People’s Hospital (Xi’an Fourth Hospital), Xi’an, China
| | - Yanping Zhang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Kaiming Ren
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Zhuo Ren
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Chen Zhao
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Qian Wang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China
| | - Ning Cao
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, China,CONTACT Ning Cao 83 Wen Hua Road, Liaoning, 110016, China
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Wang J, Xiao J, Wang R, Wang D. Influencing factors of cardiac valve calcification (CVC) in patients with chronic kidney disease and the impact of CVC on long-term prognosis: a single-center retrospective study. PeerJ 2023; 11:e15569. [PMID: 37404480 PMCID: PMC10317020 DOI: 10.7717/peerj.15569] [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: 11/25/2022] [Accepted: 05/25/2023] [Indexed: 07/06/2023] Open
Abstract
Objective To investigate the effect of cardiac valve calcification (CVC) on the prognosis of patients with chronic kidney disease (CKD). Methods A total of 343 CKD patients were retrospectively analyzed, and divided into two groups according to the presence or absence of cardiac valve calcification. All patients were followed until death, loss to follow-up, or the end point of the study (December 2021). Results The incidence of CVC among the 343 CKD patients was 29.7%, including 21 cases of mitral valve calcification, 63 cases of aortic valve calcification, and 18 cases of mitral valve combined with aortic valve calcification. The incidence of CVC in CKD stages 1-2 was 0.3%, 5.2% in CKD stages 3-4, and 24.2% in CKD stage 5 (P < 0.05). Advanced age, higher serum albumin, higher cystatin C and lower uric acid levels were all associated with a higher risk of CVC. After six years of follow-up, 77 patients (22.4%) died. The causes of death were cardiovascular and cerebrovascular diseases in 36 cases (46.7%), infection in 29 cases (37.7%), gastrointestinal bleeding in nine cases (11.7%), and "other" in the remaining three cases (3.9%). A Kaplan Meier survival analysis showed that the overall survival rate of patients with CVC was lower than that of patients without CVC. Conclusion The incidence of CVC, mainly aortic calcification, is high in patients with CKD. Advanced age, higher serum albumin and higher cystatin C levels were associated with a higher risk of CVC. Hyperuricemia was associated with a lower risk of CVC. The overall survival rate of patients with CVC was lower than that of patients without CVC.
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Affiliation(s)
- Ju Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Jianping Xiao
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Ruifeng Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Deguang Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
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Zhang J, Pang Q, Wang S, Wu L, Zhang A. Associated factors of cardiac valve calcification and its prognostic effects among patients with chronic kidney disease: a systematic review and meta-analysis. Front Cardiovasc Med 2023; 10:1120634. [PMID: 37180797 PMCID: PMC10169583 DOI: 10.3389/fcvm.2023.1120634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/10/2023] [Indexed: 05/16/2023] Open
Abstract
Background Cardiac valve calcification (CVC) is highly prevalent and a risk factor for adverse outcomes in patients with chronic kidney disease (CKD). This meta-analysis aimed to investigate the risk factors for CVC and association between CVC and mortality in CKD patients. Method Three electronic databases including PubMed, Embase, and Web of Science were searched for relevant studies up to November 2022. Hazard ratios (HR), odds ratios (OR), and 95% confidence intervals (CI) were pooled using random-effect meta-analyses. Results 22 studies were included in the meta-analysis. Pooled analyses showed that CKD patients with CVC were relatively older, had a higher body mass index, left atrial dimension, C-reaction protein level, and a declined ejection fraction. Calcium and phosphate metabolism dysfunction, diabetes, coronary heart disease, and duration of dialysis were all predictors for CVC in CKD patients. The presence of CVC (both aortic valve and mitral valve) increased the risk of all-cause and cardiovascular mortality in CKD patients. However, the prognostic value of CVC for mortality was not significant anymore in patients with peritoneal dialysis. Conclusion CKD patients with CVC had a greater risk of all-cause and cardiovascular mortality. Multiple associated factors for development of CVC in CKD patients should be taken into consideration by healthcare professionals to improve prognosis. Systematic Review Registration https://www.crd.york.ac.uk/PROSPERO/, identifier [CRD42022364970].
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Affiliation(s)
- Jialing Zhang
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Qi Pang
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Shiyuan Wang
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Leiyun Wu
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Aihua Zhang
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
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Cardiac valve calcification as a predictor of cardiovascular outcomes in peritoneal dialysis patients: an inverse probability of treatment weighting analysis. Int Urol Nephrol 2022; 55:1271-1278. [PMID: 36454448 DOI: 10.1007/s11255-022-03430-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 11/18/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND Cardiovascular events (CVE) are the leading cause of death in peritoneal dialysis (PD) patients. The predictive value of cardiac valve calcification (CVC) for CVE in dialysis patients remains controversial. In particular, such studies are limited in PD patients. We aimed to examine the predictive role of CVC for CVE and cardiovascular mortality in PD patients. METHODS A retrospective analysis was performed on patients who initiated PD in our hospital. According to the result of echocardiography, patients were divided into CVC group and non-CVC group. The differences in baseline demographic characteristics, biochemical variables, comorbidities, and clinical outcomes between the two groups were compared. Kaplan-Meier method was used to obtain survival curves. The Cox regression model was used to evaluate the influence of CVC for cardiovascular outcomes. The inverse probability of treatment weighting (IPTW) was used to eliminate influence of the confounders in the groups. RESULTS 458 peritoneal dialysis patients were enrolled in this study. 77 patients were in CVC group and 381 patients in non-CVC group. The average follow-up time was (32 ± 21) months. At baseline, the absolute standardized difference (ASD) of age, BMI, history of CVE, diabetes, LVEF, LVMI, albumin, calcium, phosphorus, triglycerides, hsCRP, urine volume, Kt/V, statins and vitamin D intake rate were greater than 0.1 between the two groups. All of ASD dropped to less than 0.1 after IPTW, which meant that the balance had been reached between the two groups. Multivariable logistic analysis showed that advanced age, diabetes, and hyperphosphatemia were associated with CVC. The Kaplan-Meier survival curve showed the cumulative CVE-free survival rate and cardiovascular survival rate of CVC group were significantly lower than that of non-CVC group before and after IPTW (log-rank P < 0.05). After IPTW was used to eliminate the effect of confounders, multivariate Cox regression analysis still showed CVC was an independent risk factor for CVE (HR = 2.383, 95% CI 1.331~4.264, P = 0.003) and cardiovascular mortality (HR = 2.347, 95% CI 1.211~4.548, P = 0.012) in PD patients. CONCLUSION The prevalence of CVC is high in peritoneal dialysis patients. CVC is an independent risk factor for CVE and cardiovascular mortality in peritoneal dialysis patients.
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