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glomerular filtration rate calculator

Ali Riza Koksal, Huseyin Alkim, Salih Boga, Mehmet Sinan Iyisoy, Ilker Sen, Sebnem Tekin Neijmann, Canan Alkim
BACKGROUND: Cystatin C is a genuine marker for detecting minor reductions in estimated glomerular filtration rate (e-GFR). STUDY QUESTION: We aimed to investigate the efficiency of cystatin C levels in predicting nephrotoxicity due to antiviral therapy in patients with chronic hepatitis B virus infection. STUDY DESIGN: Seventy-six naive hepatitis B virus patients and 44 controls were enrolled in this prospective cohort study. MEASURES AND OUTCOMES: Serum cystatin C, phosphate and creatinine levels, and urinary albumin/creatinine ratios of all patients were measured at baseline, 3rd, 12th, and 24th months...
October 4, 2016: American Journal of Therapeutics
Sae Young Jae, Sudhir Kurl, Barry A Franklin, Jari A Laukkanen
OBJECTIVES: We investigated whether long-term changes in cardiorespiratory fitness (CRF) predict the risk of incident hypertension, independent of risk factors, in initially normotensive men. METHODS: This prospective study from the Kuopio Ischemic Heart Disease Study included 431 male participants without hypertension who underwent symptom-limited maximal cardiopulmonary exercise testing at baseline and during a second examination, 11-years later, who were re-evaluated for hypertension at 20-year follow-up...
October 18, 2016: American Journal of Human Biology: the Official Journal of the Human Biology Council
Garabed Eknoyan
Diseases of the kidney are old, but the discipline dedicated to their study, nephrology, is barely more than 50 years old. As recounted in this recollection of those events, the rudiments of what would become nephrology emerged in the time between the 2 World Wars from basic studies of normal kidney function and flourished after the integration of their methodologies into clinical medicine thereafter. Although shaped by studies of kidney function in the 1960s, it was the subsequent advent of dialysis that fueled the growth of nephrology well into the 21st century...
October 14, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Hao Yan, Wei Fang, Aiwu Lin, Liou Cao, Zhaohui Ni, Jiaqi Qian
BACKGROUND: Incident patients treated with continuous ambulatory peritoneal dialysis (CAPD) are often prescribed either 3 or 4 exchanges per day. However, the effects on residual kidney function and clinical outcomes of 3 versus 4 exchanges are not known. STUDY DESIGN: Prospective, randomized, controlled, open-label study. SETTING & PARTICIPANTS: Incident CAPD patients aged 18 to 80 years with glomerular filtration rates (GFRs; mean of renal urea and creatinine clearance from a 24-hour urine collection) ≥ 2mL/min and urine volume ≥ 500mL/d...
October 14, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Katsuhiro Makino, Tohru Nakagawa, Atsushi Kanatani, Taketo Kawai, Satoru Taguchi, Masafumi Otsuka, Akihiko Matsumoto, Hideyo Miyazaki, Tetsuya Fujimura, Hiroshi Fukuhara, Haruki Kume, Yukio Homma
BACKGROUND: We evaluated short- and long-term renal function in patients after radical cystectomy with urinary diversion and identified risk factors for the deterioration of renal function. METHODS: This retrospective study comprised 91 patients who underwent radical cystectomy and urinary diversion for bladder cancer and survived ≥3 years after surgery. The estimated glomerular filtration rate (eGFR) was calculated, and longitudinal changes of eGFR were assessed...
October 17, 2016: International Journal of Clinical Oncology
Mumtaz Takir, Aslı Dogruk Unal, Osman Kostek, Nilufer Bayraktar, Nilgun Guvener Demirag
OBJECTIVE: To evaluate renal impairment in type 2 diabetic patients with normoalbuminuria or microalbuminuria by detection of serum cystatin C and serum and urinary TGF-β levels. METHODS: Cross-sectional study conducted at the Department of Endocrinology in Baskent University School of Medicine. Patients with type 2 diabetes mellitus without known overt diabetic nephropathy were included in the study. Recruited patients were stratified into four groups, matched in terms of age, gender, microalbuminuria level and estimated GFR calculated with MDRD...
October 13, 2016: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
Lorraine Lau, Zubaida Al-Ismaili, Maya Harel-Sterling, Michael Pizzi, Jillian S Caldwell, Melissa Piccioni, Larry C Lands, Theresa Mottes, Prasad Devarajan, Stuart L Goldstein, Michael R Bennett, Michael Zappitelli
BACKGROUND: Serum cystatin C (CysC) is a more accurate glomerular filtration rate marker than serum creatinine (SCr) and may rise more quickly with acute kidney injury (AKI). METHODS: We performed a prospective cohort study of 81 non-critically ill children during 110 aminoglycoside (AG) treatments. We calculated area under the curve (AUC) for CysC to diagnose SCr-defined AKI and predict persistent AKI. SCr-AKI definition was based on the Kidney Disease: Improving Global Outcomes (≥stage 1: ≥50 % or 26...
October 14, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Helge Bruns, Veronika Kortendieck, Hans-Rudolf Raab, Dalibor Antolovic
Background. After pancreaticoduodenectomy (PD), pancreatic fistulas (PF) are a frequent complication. Infusions may compromise anastomotic integrity. This retrospective analysis evaluated associations between intraoperative fluid excess and PF. Methods. Data on perioperative parameters including age, sex, laboratory findings, histology, infusions, surgery time, and occurrence of grade B/C PF was collected from all PD with pancreaticojejunostomy (PJ) performed in our department from 12/2011 till 02/2015. The glomerular filtration rate (GFR), infusion rate, and the ratio of both and its association with PF were calculated...
2016: HPB Surgery: a World Journal of Hepatic, Pancreatic and Biliary Surgery
Alessandro Gasparini, Marie Evans, Josef Coresh, Morgan E Grams, Olof Norin, Abdul R Qureshi, Björn Runesson, Peter Barany, Johan Ärnlöv, Tomas Jernberg, Björn Wettermark, Carl G Elinder, Juan-Jesüs Carrero
BACKGROUND: Chronic kidney disease (CKD) is common, but the frequency of albuminuria testing and referral to nephrology care has been difficult to measure. We here characterize CKD prevalence and recognition in a complete healthcare utilization cohort of the Stockholm region, in Sweden. METHODS: We included all adult individuals (n = 1 128 058) with at least one outpatient measurement of IDMS-calibrated serum creatinine during 2006-11. Estimated glomerular filtration rate (eGFR) was calculated via the CKD-EPI equation and CKD was solely defined as eGFR <60 mL/min/1...
October 13, 2016: Nephrology, Dialysis, Transplantation
Yu-Liang Zhan, Bin Zou, Ting Kang, Ling-Bing Xiong, Jin Zou, Yun-Feng Wei
BACKGROUND: Accumulating evidence suggests that increased red cell distribution width (RDW) and mean corpuscular volume (MCV) were both poor prognostic factors for patients with cardiovascular diseases. Recently, the multiplicative interaction between RDW and MCV has been observed for predicting mortality in elderly patients without anemia; however, the relationship between the product of RDW-MCV and hypertension-induced target organ damage (TOD) has not been evaluated. METHODS: We performed a cross-sectional study in 1115 hypertensive patients...
October 13, 2016: Journal of Clinical Laboratory Analysis
Funda Sari, Ayca Inci, Suleyman Dolu, Hamit Yasar Ellidag, Ramazan Cetinkaya, Fettah Fevzi Ersoy
This study aims to determine fibroblast growth factor-23 and soluble α-Klotho levels in patients with autosomal dominant polycystic kidney disease. A total of 76 patients with autosomal dominant polycystic kidney disease and 32 healthy volunteers were included in the study. Serum fibroblast growth factor-23 and soluble α-Klotho levels were measured with ELISA kits. Parathyroid hormone, phosphate, calcium, creatinine, 25-hydroxyvitamin D3 levels, urinary protein to creatinine ratio and estimated glomerular filtration rate were also measured or calculated...
October 12, 2016: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
Wei Zheng, Geng Qian, Wenjun Hao, Xiaodong Geng, Quan Hong, Guangyan Cai, Xiangmei Chen, Di Wu
METHODS: A total of 2426 study subjects from rural China aged 35 years and above (934 men and 1492 women) were enrolled in a cross-sectional survey. The eGFR calculation was based on the Modification of Diet in Renal Disease (MDRD) equation. The strength of the association between cardiovascular metabolic risk factors and eGFR was analyzed using a linear regression model. RESULTS: Cardiovascular metabolic risk factors, including age, body weight, waist circumference, fasting plasma glucose (FPG), creatinine (Cr), high-density lipoprotein-cholesterol (HDL-C), total cholesterol (TC), triglyceride (TG), systolic pressure, and diastolic pressure, were associated with eGFR...
October 12, 2016: Lipids in Health and Disease
Yasumasa Kawano, Shinichi Morimoto, Yoshito Izutani, Kentaro Muranishi, Hironari Kaneyama, Kota Hoshino, Takeshi Nishida, Hiroyasu Ishikura
BACKGROUND: Augmented renal clearance (ARC) of circulating solutes and drugs has been recently often reported in intensive care unit (ICU) patients. However, only few studies on ARC have been reported in Japan. The aims of this pilot study were to determine the prevalence and risk factors for ARC in Japanese ICU patients with normal serum creatinine levels and to evaluate the association between ARC and estimated glomerular filtration rate (eGFR) calculated using the Japanese equation...
2016: Journal of Intensive Care
Marije Smit, Maureen J M Werner, Annemieke Oude Lansink-Hartgring, Willem Dieperink, Jan G Zijlstra, Matijs van Meurs
BACKGROUND: Intra-abdominal hypertension (IAH) is frequently present in critically ill patients and is an independent predictor for mortality. Better recognition of clinically important thresholds is necessary. Increased intra-abdominal pressure (IAP) is associated with renal dysfunction, and renal failure is one of the most consistently described organ dysfunctions associated with IAH. Obesity is also associated with kidney injury. The underlying mechanisms are not yet fully understood...
December 2016: Annals of Intensive Care
Lixia Zong, Ming Yao, Jun Ni, Lixin Zhou, Jing Yuan, Bin Peng, Yi-Cheng Zhu, Liying Cui
BACKGROUND: Previous studies suggested the potential interactions between cerebrovascular diseases and impaired renal function. However, the relationship between renal function and white matter hyperintensity (WMH), marker of cerebral small vessel disease, in patients with acute ischemic stroke (AIS) or transient ischemic attack (TIA) remains unknown. METHODS: We consecutively enrolled 1632 subjects with AIS or TIA who underwent brain MRI for this analysis. The severity of WMH in both of periventricular (PVH) and deep subcortical white matter (SDWMH) was evaluated using Fazekas scale...
October 6, 2016: BMC Neurology
Gianluca Gessoni, Sara Valverde, Francesca Gessoni, Letizia Valle, Roberto Valle
BACKGROUND: In this paper we evaluated the relationship between trough DAB concentration with eGFR calculated using CRE and CYS based formulas. MATERIALS AND METHODS: We considered 100 patients. eGFR was calculated using CKD-EPIcreat, CG, MDRD, CKD-EPIcys and CKD-EPIcombined equations. DAB dosage was selected on the basis of CKD-EPIcreat and relationship between trough DAB concentration and eGFRs was evaluated. RESULTS: Trough DAB concentration roughly correlates with eGFR calculated using various formulas...
October 3, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
Barak Rosenzweig, Yoram Mor, Tomer Erlich, Menachem Laufer, Harry Winkler, Issac Kaver, Jacob Ramon, Zohar A Dotan
INTRODUCTION: Ureteral strictures can result in obstructive nephropathy and renal function deterioration. Surgical management of ureteral defects, especially in the proximal- and mid-ureter, is particularly challenging. Our purpose was to analyze the long-term outcomes of urothelial-based reconstructive surgery for upper- and mid-ureteral defects. METHODS: We conducted a retrospective analysis of a single tertiary centre's database, including 149 patients treated for ureteral defects between 2001 and 2011...
September 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Afshin Safaei-Asl, Mercede Enshaei, Abtin Heydarzadeh, Shohreh Maleknejad
INTRODUCTION: Assessment of glomerular filtration rate (GFR) is an important tool for monitoring renal function. OBJECTIVES: Regarding to limitations in available methods, we intended to calculate GFR by cystatin C (Cys C) based formulas and determine correlation rate of them with current methods. PATIENTS AND METHODS: We studied 72 children (38 boys and 34 girls) with renal disorders. The 24 hour urinary creatinine (Cr) clearance was the gold standard method...
2016: Journal of Renal Injury Prevention
Haci Murat Gunes, Filiz Kizilirmak Yılmaz, Tayyar Gokdeniz, Gultekin Gunhan Demir, Ekrem Guler, Gamze Babur Guler, Oğuz Karaca, Beytullah Cakal, Ersin İbişoğlu, Bilal Boztosun
OBJECTIVE: The aim of the present study was to investigate the relationship between glomerular filtration rate (GFR) and acute post-scaffold recoil (PSR) in patients undergoing bioresorbable scaffold (BVS) implantation. METHODS: We included 130 patients who underwent everolimus-eluting BVS device (Absorb BVS; Abbott Vascular, Santa Clara, CA, USA) or the novolimus-eluting BVS device (Elixir Medical Corporation) implantations for single or multi-vessel disease. Clinical, angiographic variables and procedural characteristics were defined and pre-procedural GFR was calculated for each patient...
September 20, 2016: International Journal of Cardiology
Suzanne M Boyle, Yimei Li, F P Wilson, Joel D Glickman, Harold I Feldman
♦ Background: Total body water (V) is an imprecise metric for normalization of dialytic urea clearance (Kt). This poses a risk of early mortality/technique failure (TF). We examined differences in the distribution of peritoneal Kt/V when V was calculated with actual weight (AW), ideal weight (IW), and adjusted weight (ADW). We also examined the associations of these Kt/V measurements, Kt/body surface area (BSA), and non-normalized Kt with mortality and TF. ♦ Methods: This is a retrospective cohort study of 534 incident peritoneal dialysis (PD) patients from the Dialysis Morbidity and Mortality Study Wave 2 linked with United States Renal Data System through 2010...
September 28, 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
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