scholarly journals Clustering Heatmap for Visualizing and Exploring Complex and High-dimensional Data Related to Chronic Kidney Disease

2020 ◽  
Vol 9 (2) ◽  
pp. 403 ◽  
Author(s):  
Cheng-Sheng Yu ◽  
Chang-Hsien Lin ◽  
Yu-Jiun Lin ◽  
Shiyng-Yu Lin ◽  
Sen-Te Wang ◽  
...  

Background: Preventive medicine and primary health care are essential for patients with chronic kidney disease (CKD) because the symptoms of CKD may not appear until the renal function is severely compromised. Early identification of the risk factors of CKD is critical for preventing kidney damage and adverse outcomes. Early recognition of rapid progression to advanced CKD in certain high-risk populations is vital. Methods: This is a retrospective cohort study, the population screened and the site where the study has been performed. Multivariate statistical analysis was used to assess the prediction of CKD as many potential risk factors are involved. The clustering heatmap and random forest provides an interactive visualization for the classification of patients with different CKD stages. Results: uric acid, blood urea nitrogen, waist circumference, serum glutamic oxaloacetic transaminase, and hemoglobin A1c (HbA1c) were significantly associated with CKD. CKD was highly associated with obesity, hyperglycemia, and liver function. Hypertension and HbA1c were in the same cluster with a similar pattern, whereas high-density lipoprotein cholesterol had an opposite pattern, which was also verified using heatmap. Early staged CKD patients who are grouped into the same cluster as advanced staged CKD patients could be at high risk for rapid decline of kidney function and should be closely monitored. Conclusions: The clustering heatmap provided a new predictive model of health care management for patients at high risk of rapid CKD progression. This model could help physicians make an accurate diagnosis of this progressive and complex disease.

2020 ◽  
Author(s):  
Ibrahim Ali ◽  
Rajkumar Chinnadurai ◽  
Sara T. Ibrahim ◽  
Darren Green ◽  
Philip Kalra

Abstract Background Risk factors predictive of rapid linear chronic kidney disease (CKD) progression and its associations with end-stage renal disease (ESRD) and mortality requires further exploration, particularly as patients with linear eGFR trajectory represent a clear paradigm for understanding true CKD progression. Methods A linear regression slope was applied to all outpatient estimated glomerular filtration rate (eGFR) values for patients in the Salford Kidney Study who had ≥2years follow-up, ≥4 eGFR values and baseline CKD stages 3a-4. An eGFR slope (ΔeGFR) of ≤-4ml/min/1.73m2/yr defined rapid progressors, whereas -0.5 to +0.5ml/min/1.73m2/yr defined stable patients. Binary logistic regression was utilised to explore variables associated with rapid progression and Cox proportional hazards model to determine predictors for mortality prior to ESRD. Results There were 157 rapid progressors (median ΔeGFR -5.93ml/min/1.73m2/yr) and 179 stable patients (median ΔeGFR -0.03ml/min/1.73m2/yr). Over 5 years, rapid progressors had an annual rate of mortality or ESRD of 47 per 100 patients compared with 6 per 100 stable patients. Factors associated with rapid progression included younger age, female gender, higher diastolic pressure, higher total cholesterol:high density lipoprotein ratio, lower albumin, lower haemoglobin and a urine protein:creatinine ratio of >50g/mol. The latter three factors were also predictive of mortality prior to ESRD, along with older age, smoking, peripheral vascular disease and heart failure. Conclusions There is a heterogenous interplay of risk factors associated with rapid linear CKD progression and mortality in patients with CKD. Furthermore, rapid progressors have high rates of adverse outcomes and require close specialist monitoring.


2020 ◽  
Author(s):  
Ibrahim Ali ◽  
Rajkumar Chinnadurai ◽  
Sara T. Ibrahim ◽  
Darren Green ◽  
Philip Kalra

Abstract Background: Risk factors predictive of rapid linear chronic kidney disease (CKD) progression and its associations with end-stage renal disease (ESRD) and mortality requires further exploration, particularly as patients with linear eGFR trajectory represent a clear paradigm for understanding true CKD progression.Methods: A linear regression slope was applied to all outpatient estimated glomerular filtration rate (eGFR) values for patients in the Salford Kidney Study who had ≥ 2 years follow-up, ≥ 4 eGFR values and baseline CKD stages 3a-4. An eGFR slope (ΔeGFR) of ≤-4 ml/min/1.73 m2/yr defined rapid progressors, whereas − 0.5 to + 0.5 ml/min/1.73 m2/yr defined stable patients. Binary logistic regression was utilised to explore variables associated with rapid progression and Cox proportional hazards model to determine predictors for mortality prior to ESRD.Results: There were 157 rapid progressors (median ΔeGFR − 5.93 ml/min/1.73 m2/yr) and 179 stable patients (median ΔeGFR − 0.03 ml/min/1.73 m2/yr). Over 5 years, rapid progressors had an annual rate of mortality or ESRD of 47 per 100 patients compared with 6 per 100 stable patients. Factors associated with rapid progression included younger age, female gender, higher diastolic pressure, higher total cholesterol:high density lipoprotein ratio, lower albumin, lower haemoglobin and a urine protein:creatinine ratio of > 50 g/mol. The latter three factors were also predictive of mortality prior to ESRD, along with older age, smoking, peripheral vascular disease and heart failure.Conclusions: There is a heterogenous interplay of risk factors associated with rapid linear CKD progression and mortality in patients with CKD. Furthermore, rapid progressors have high rates of adverse outcomes and require close specialist monitoring.


2018 ◽  
Vol 48 (6) ◽  
pp. 447-455 ◽  
Author(s):  
Nilka Ríos Burrows ◽  
Joseph A. Vassalotti ◽  
Sharon H. Saydah ◽  
Rebecca Stewart ◽  
Monica Gannon ◽  
...  

Background: Most people with chronic kidney disease (CKD) are not aware of their condition. Objectives: To assess screening criteria in identifying a population with or at high risk for CKD and to determine their level of control of CKD risk factors. Method: CKD Health Evaluation Risk Information Sharing (CHERISH), a demonstration project of the Centers for Disease Control and Prevention, hosted screenings at 2 community locations in each of 4 states. People with diabetes, hypertension, or aged ≥50 years were eligible to participate. In addition to CKD, screening included testing and measures of hemoglobin A1C, blood pressure, and lipids. ­Results: In this targeted population, among 894 people screened, CKD prevalence was 34%. Of participants with diabetes, 61% had A1C < 7%; of those with hypertension, 23% had blood pressure < 130/80 mm Hg; and of those with high cholesterol, 22% had low-density lipoprotein < 100 mg/dL. Conclusions: Using targeted selection criteria and simple clinical measures, CHERISH successfully identified a population with a high CKD prevalence and with poor control of CKD risk factors. CHERISH may prove helpful to state and local programs in implementing CKD detection programs in their communities.


2020 ◽  
Vol 20 (2) ◽  
pp. 268-275
Author(s):  
Primprapha Konkaew ◽  
Pattama Suphunnakul

This research aimed to explore the factors predicting chronic kidney disease (CKD) in the high-risk population. A cross-sectional study had been conducted in the high-risk populations investigated with and without CKD were the participants. A total of 1,463 samples was enrolled by a multistage sampling technique was used to recruit participants from five provinces in the lower northern of Thailand. Data were collected using a questionnaire and analyzed with descriptive statistics, and binary logistic regression. The results were revealed the risk factors affecting CKD including aged, dyslipidemia, being ill of diabetes mellitus, being unable to control blood pressure, being unable to control blood sugar level, taking add more salty seasoning to the cooked food, cooking with sodium salt over the prescribed amount, using the non-steroidal anti-inflammatory drug, lack of exercise, herbal plants consumption as drugs that are toxic to the kidney, edema, foamy urine, and nocturia. All risk factors were able to co-predict the risk to CKD about 83.2% at the 0.05 level of significance. Therefore, to prevent early states with CKD in the high-risk populations, the focus should be on encouraging health literacy because health literary it has a positive relationship with health-promoting behaviors. The health care provider needs to concentrate on increasing health literacy for self– management with them.


Nephrology ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 308-315 ◽  
Author(s):  
Hywel Lloyd ◽  
Grace Li ◽  
Andrew Tomlin ◽  
Murray W Tilyard ◽  
Robert Walker ◽  
...  

2019 ◽  
Author(s):  
Frederick C. F. Otieno ◽  
Elijah N Ogola ◽  
Mercy W Kimando ◽  
Ken K Mutai

Abstract Background: Chronic Kidney Disease (CKD) in patients with type 2 diabetes enhances the cardiovascular risk profiles and disease, and is a strong predictor of progression to end-stage kidney disease. Early diagnosis is encouraged for referral to specialist kidney care to initiate active management that would optimize outcomes including forestalling progression to end-stage kidney disease. This study was conducted in a regional referral public health facility in Central Kenya with a high prevalence of type 2 diabetes. It was aimed at finding out the burden of undiagnosed chronic kidney disease in their clinic of ambulatory patients with type 2 diabetes who dwell mainly in the rural area. Methods: A cross-sectional study was conducted at the out-patient of Nyeri County hospital. A total of 385 patients were enrolled over five months. Informed consent was obtained and clinical evaluation was done, a spot sample of urine obtained for albuminuria and venous blood drawn for HbA1c, Lipids and serum creatinine. Estimated GFR (eGFR) was calculated using the Cockroft-Gault equation. Chronic kidney disease (CKD) was classified on KDIGO scale. Albuminuria was reported as either positive or negative. Main outcomes measure: Estimated Glomerular filtration rate and albuminuria as markers of chronic kidney disease. Results: A total of 385 participants were included in the study, 252 (65.5%) were females. There were 39.0 % (95%CI 34.3-44.2) patients in CKD/KDIGO stages 3, 4 and 5 and 32.7% (95%CI, 27.8-37.4) had Albuminuria. The risk factors that were significantly associated with chronic kidney disease/KDIGO stages 3, 4 and 5 were: age >50years, long duration with diabetes >5years and hypertension. Employment and paradoxically, obesity reduced the odds of having CKD, probably as markers of better socio-economic status. Conclusion: Unrecognized CKD of KDIGO stages 3,4 and 5 occurred in over thirty percent of the study patients. The risk factors of hypertension, age above 50, long duration of diabetes should help identify those at high risk of developing CKD, for screening and linkage to care. They are at high risk of progression to end-stage kidney disease and cardiovascular events. The imperative of screening for chronic kidney disease is availing care in publicly-funded hospitals.


2020 ◽  
Author(s):  
Frederick C. F. Otieno ◽  
Elijah N Ogola ◽  
Mercy W Kimando ◽  
Ken K Mutai

Abstract Background : Chronic Kidney Disease (CKD) in patients with type 2 diabetes enhances their cardiovascular risk and diseases, and a strong predictor of progression to end-stage kidney disease. Early diagnosis is encouraged for referral to specialist kidney care to initiate active management that optimizes outcomes, including forestalling progression to end-stage kidney disease. This study was conducted in a regional referral public health facility in Central Kenya with a high prevalence of type 2 diabetes. It was aimed at finding out the burden of undiagnosed chronic kidney disease in their clinic of ambulatory patients with type 2 diabetes who dwell mainly in the rural area. Methods : A cross-sectional study was conducted at the out-patient of Nyeri County hospital where 385 patients were enrolled over five months. Informed consent was obtained and clinical evaluation was done. A spot sample of urine was obtained for albuminuria and venous blood drawn for HbA1c, Lipids and serum creatinine. Estimated GFR (eGFR) was calculated using the Cockroft-Gault equation. Chronic kidney disease (CKD) was classified on KDIGO scale. Albuminuria was reported as either positive or negative. Main outcomes measure: Estimated Glomerular filtration rate and albuminuria as markers of chronic kidney disease. Results : A total of 385 participants were included in the study, 252 (65.5%) were females. There were 39.0 % (95%CI 34.3-44.2) patients in CKD/KDIGO stages 3, 4 and 5 and 32.7% (95%CI, 27.8-37.4) had Albuminuria. The risk factors that were significantly associated with chronic kidney disease/KDIGO stages 3, 4 and 5 were: age >50years, long duration with diabetes >5years and hypertension. Employment and paradoxically, obesity reduced the odds of having CKD, probably as markers of better socio-economic status. Conclusion : Unrecognized CKD of KDIGO stages 3,4 and 5 occurred in over thirty percent of the study patients. The risk factors of hypertension, age above 50, long duration of diabetes should help identify those at high risk of developing CKD, for screening and linkage to care. They are at high risk of progression to end-stage kidney disease and cardiovascular events. The imperative of screening for chronic kidney disease is availing care in publicly-funded hospitals.


2019 ◽  
Vol 8 (7) ◽  
pp. 1034 ◽  
Author(s):  
Chrysan J. Mohammed ◽  
Yanmei Xie ◽  
Pamela S. Brewster ◽  
Subhanwita Ghosh ◽  
Prabhatchandra Dube ◽  
...  

The burden of cardiovascular disease and death in chronic kidney disease (CKD) outpaces that of the other diseases and is not adequately described by traditional risk factors alone. Diminished activity of paraoxonase (PON)-1 is associated with increased oxidant stress, a common feature underlying the pathogenesis of CKD. We aimed to assess the prognostic value of circulating PON-1 protein and PON lactonase activity on adverse clinical outcomes across various stages and etiologies of CKD. Circulating PON-1 protein levels and PON lactonase activity were measured simultaneously in patients with CKD as well as a cohort of apparently healthy non-CKD subjects. Both circulating PON-1 protein levels and PON lactonase activity were significantly lower in CKD patients compared to the non-CKD subjects. Similarly, across all stages of CKD, circulating PON-1 protein and PON lactonase activity were significantly lower in patients with CKD compared to the non-CKD controls. Circulating PON lactonase activity, but not protein levels, predicted future adverse clinical outcomes, even after adjustment for traditional risk factors. The combination of lower circulating protein levels and higher activity within the CKD subjects were associated with the best survival outcomes. These findings demonstrate that diminished circulating PON lactonase activity, but not protein levels, predicts higher risk of future adverse clinical outcomes in patients with CKD.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Enzo Lüsebrink ◽  
Alexander Krogmann ◽  
Franziska Tietz ◽  
Matthias Riebisch ◽  
Rainer Okrojek ◽  
...  

Abstract Background Percutaneous dilatational tracheotomy (PDT) has become an established procedure in intensive care units (ICU). However, the safety of this method has been under debate given the growing number of critically ill patients with high bleeding risk receiving anticoagulation, dual antiplatelet therapy (DAPT) or even a combination of both, i.e. triple therapy. Therefore, the purpose of this study, including such a high proportion of patients on antithrombotic therapy, was to investigate whether PDT in high-risk ICU patients is associated with elevated procedural complications and to analyse the risk factors for bleeding occurring during and after PDT. Methods PDT interventions conducted in ICUs at 12 European sites between January 2016 and October 2019 were retrospectively analysed for procedural complications. For subgroup analyses, patient stratification into clinically relevant risk groups based on anticoagulation and antiplatelet treatment regimens was performed and the predictors of bleeding occurrence were analysed. Results In total, 671 patients receiving PDT were included and stratified into four clinically relevant antithrombotic treatment groups: (1) intravenous unfractionated heparin (iUFH, prophylactic dosage) (n = 101); (2) iUFH (therapeutic dosage) (n = 131); (3) antiplatelet therapy (aspirin and/or P2Y12 receptor inhibitor) with iUFH (prophylactic or therapeutic dosage) except for triple therapy (n = 290) and (4) triple therapy (DAPT with iUFH in therapeutic dosage) (n = 149). Within the whole cohort, 74 (11%) bleedings were reported to be procedure-related. Bleeding occurrence during and after PDT was independently associated with low platelet count (OR 0.73, 95% CI [0.56, 0.92], p = 0.009), chronic kidney disease (OR 1.75, 95% CI [1.01, 3.03], p = 0.047) and previous stroke (OR 2.13, 95% CI [1.1, 3.97], p = 0.02). Conclusion In this international, multicenter study bronchoscopy-guided PDT was a safe and low-complication airway management option, even in a cohort of high risk for bleeding on cardiovascular ICUs. Low platelet count, chronic kidney disease and previous stroke were identified as independent risk factors of bleeding during and after PDT but not triple therapy.


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