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Clearance glomerular filtration rate

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https://www.readbyqxmd.com/read/28546304/comparison-of-methods-of-estimating-creatinine-clearance-in-pediatric-patients
#1
Danielle Padgett, Andrew Ostrenga, Lindsey Lepard
PURPOSE: A retrospective study was conducted to compare various methods of measuring serum creatinine (SCr) values for use in pediatric renal function assessments, including a method aligned with a recently implemented national SCr testing standard. METHODS: Demographic, medication-use, and selected laboratory data were collected from the hospital records of a sample of pediatric patients (n = 91) who underwent 12- or 24-hour timed urine collection for determination of creatinine clearance (CLcr) over a 2-year period...
June 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28537660/relation-between-blood-pressure-variability-and-early-renal-damage-in-hypertensive-patients
#2
L-H Yin, W-J Yan, Z-X Guo, F-Z Zhou, H-Y Zhang
OBJECTIVE: The objective of the present study was to observe the relation between blood pressure variability (BPV) and early renal damage in hypertensive patients. PATIENTS AND METHODS: A total of 118 hypertensive patients were consecutively selected. General parameters including sex, age, duration, and grade of hypertension, antihypertensive drugs taken, smoking status, blood sugar, blood lipid level, body mass index, indexes of 24-h ambulatory blood pressure monitoring and renal function including cystatin C (CysC), serum creatinine (SCr), angiotensin II (Ang II), microalbuminuria (mALb), and urine creatinine (UCr) were measured...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28536087/workflow-sensitivity-of-post-processing-methods-in-renal-dce-mri
#3
Erik Hanson, Eli Eikefjord, Jarle Rørvik, Erling Andersen, Arvid Lundervold, Erlend Hodneland
OBJECTIVE: Estimation of renal filtration using dynamic contrast-enhanced imaging (DCE-MRI) requires a series of analysis steps. The possible number of distinct post-processing chains is large and grows rapidly with increasing number of processing steps or options. In this study we introduce a framework for systematic evaluation of the post-processing chains. The framework is later used to highlight the workflow processing chain sensitivity towards accuracy in estimation of glomerular filtration rate (GFR)...
May 20, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28534209/the-renal-safety-and-efficacy-of-combined-gemcitabine-plus-cisplatin-and-gemcitabine-plus-carboplatin-chemotherapy-in-chinese-patients-with-a-solitary-kidney-after-nephroureterectomy
#4
Peng Sun, Cong Xue, Li-Ren Li, Cui Shao, Xin An, Ried Thomas, Wei Yang, Ying-Fei Deng, Wen-Qi Jiang, Yan-Xia Shi
PURPOSE: The renal safety of cisplatin-based chemotherapy has not been investigated in patients with urothelial carcinoma of the upper urinary tract (UUT-UC) who retain a solitary kidney after nephroureterectomy. This study aimed to assess and compare the renal safety and efficacy of gemcitabine-cisplatin (GP) and gemcitabine-carboplatin (GC) in these patients. METHODS: The medical records of patients diagnosed with urothelial carcinoma at the Sun Yat-Sen University Cancer Center between January 2005 and December 2015 were retrospectively reviewed...
May 22, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28522248/adverse-effects-in-kidney-function-antioxidant-systems-and-histopathology-in-rats-receiving-monosodium-glutamate-diet
#5
María Del Carmen Contini, Ana Fabro, Néstor Millen, Adriana Benmelej, Stella Mahieu
We investigated the effects of adding of monosodium glutamate (MSG) to a standard diet on oxidative stress in kidney, nitric oxide excretion, renal ions handling and blood pressure. We examined the association of these changes with the effects on renal histology. The study was performed on male Wistar rats (5 weeks old) divided into 3 groups: 1) MSG group were fed a diet supplemented with 3g of MSG/kg b.w./day, five days a week, and spontaneous ingestion of a 1% MSG solution during 16 weeks; 2) NaCl group were fed a diet with NaCl (1g/kg b...
May 15, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28521564/estimating-glomerular-filtration-rate-gfr-in-children-the-average-between-a-cystatin-c-and-a-creatinine-based-equation-improves-estimation-of-gfr-in-both-children-and-adults-and-enables-diagnosing-shrunken-pore-syndrome
#6
Felicia Leion, Josefine Hegbrant, Emil den Bakker, Magnus Jonsson, Magnus Abrahamson, Ulf Nyman, Jonas Björk, Veronica Lindström, Anders Larsson, Arend Bökenkamp, Anders Grubb
Estimating glomerular filtration rate (GFR) in adults by using the average of values obtained by a cystatin C- (eGFRcystatin C) and a creatinine-based (eGFRcreatinine) equation shows at least the same diagnostic performance as GFR estimates obtained by equations using only one of these analytes or by complex equations using both analytes. Comparison of eGFRcystatin C and eGFRcreatinine plays a pivotal role in the diagnosis of Shrunken Pore Syndrome, where low eGFRcystatin C compared to eGFRcreatinine has been associated with higher mortality in adults...
May 19, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28515176/acute-exercise-does-not-impair-renal-function-in-non-dialysis-chronic-kidney-disease-patients-regardless-of-disease-stage
#7
Davi Alves de Santana, Jacques R Poortmans, Egidio L Dorea, Juliana Bannwart de Andrade Machado, Alan L Fernandes, Ana Lúcia de Sá Pinto, Bruno Gualano, Hamilton Roschel
Exercise has been overlooked as a potential therapy in chronic kidney disease (CKD), mainly due to a lack of understanding on its safety aspects. Notably, there is no data on renal function after exercise in CKD considering its stages. We investigated the acute effects of a 30-minute moderate-intensity aerobic exercise bout on glomerular filtration rate (GFR) and albuminuria in twenty-two non-dialysis CKD patients divided into: CKD stages 1 and 2 (CKD1-2) and; CKD stages 3 and 4 (CKD3-4). Eleven body mass index-, age-, and sex-matched healthy individuals served as control (CON)...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28508095/estimation-of-glomerular-filtration-rate-in-cancer-patients-with-abnormal-body-composition-and-relation-with-carboplatin-toxicity
#8
M Bretagne, A Jouinot, J P Durand, O Huillard, P Boudou Rouquette, C Tlemsani, J Arrondeau, G Sarfati, F Goldwasser, J Alexandre
PURPOSE: Carboplatin clearance is correlated with glomerular filtration rate (GFR) and usually estimated with creatinine clearance using Cockcroft-Gault (CG) formula. Because plasma creatinine level is highly correlated with muscle mass, we hypothesized that an abnormal body composition with a low lean body mass (LBM) percentage [(LBM/weight) × 100] may result in inadequate carboplatin dosing. Serum cystatin C is an alternative marker of GFR, not affected by muscle mass. We aimed to investigate the influence of total LBM and LBM percentage on GFR calculation, using creatinine (CrCl) or cystatin C (GFRcysC-creat) in cancer patients...
May 15, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28507171/first-in-man-demonstration-of-direct-endothelin-mediated-natriuresis-and-diuresis
#9
Robert W Hunter, Rebecca Moorhouse, Tariq E Farrah, Iain M MacIntyre, Takae Asai, Peter J Gallacher, Debbie Kerr, Vanessa Melville, Alicja Czopek, Emma E Morrison, Jess R Ivy, James W Dear, Matthew A Bailey, Jane Goddard, David J Webb, Neeraj Dhaun
Endothelin (ET) receptor antagonists are potentially novel therapeutic agents in chronic kidney disease and resistant hypertension, but their use is complicated by sodium and water retention. In animal studies, this side effect arises from ETB receptor blockade in the renal tubule. Previous attempts to determine whether this mechanism operates in humans have been confounded by the hemodynamic consequences of ET receptor stimulation/blockade. We aimed to determine the effects of ET signaling on salt transport in the human nephron by administering subpressor doses of the ET-1 precursor, big ET-1...
May 15, 2017: Hypertension
https://www.readbyqxmd.com/read/28505377/performance-of-glomerular-filtration-rate-estimating-equations-in-a-community-based-sample-of-blacks-and-whites-the-multiethnic-study-of-atherosclerosis
#10
Lesley A Inker, Andrew S Levey, Hocine Tighiouart, Tariq Shafi, John H Eckfeldt, Craig Johnson, Aghogho Okparavero, Wendy S Post, Josef Coresh, Michael G Shlipak
Background.: The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations are recommended for glomerular filtration rate (GFR) estimation in the general population. They have not been evaluated in community-based populations, including Blacks at higher levels of GFR, but are commonly applied in such populations. Methods.: In an ancillary study of Multi-Ethnic Study of Atherosclerosis conducted at one site, we evaluated the performance of the CKD-EPI equations for creatinine (eGFRcr), cystatin C (eGFRcys) or the combination (eGFRcr-cys) compared with GFR measured as plasma clearance of iohexol...
May 13, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28504869/kidney-outcomes-in-patients-with-liver-cirrhosis-and-chronic-kidney-disease-receiving-an-orthotopic-liver-transplant-alone
#11
Neeraj Singh, Shahab Ahmadzadeh, Hosein Shokouh-Amiri, Yasir Qazi, Adrian Sequeira, Hrishikesh Samant, Robert McMillan, Gazi B Zibari
Kidney transplant in patients with liver cirrhosis and non-dialysis chronic kidney disease (CKD) is controversial. We report 14 liver cirrhotic patients who had persistently low MDRD-6 estimated-glomerular filtration rate (e-GFR) < 40 ml/min/1.73m2 for ≥ 3 months and underwent either liver transplant alone (LTA) (n=9) or simultaneous liver-kidney transplant (SLKT) (n=5). Pre-transplant, patients with LTA compared with SLKT had lower serum creatinine (2.5±0.73 vs. 4.6±0.52 mg/dl, P= 0.001), higher MDRD-6 e-GFR (21...
May 15, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28499765/ckd-epi-equation-a-suitable-glomerular-filtration-rate-estimate-for-drug-dosing-in-hiv-infected-patients
#12
A Gagneux-Brunon, E Botelho-Nevers, P Delanaye, F Lucht, A Frésard, C Cazorla, C Guglielminotti, C Fafin, C Mariat, O Moranne
OBJECTIVES: To evaluate concordance between glomerular filtration rate (GFR) estimates (Cockcroft and Gault, modification of diet in renal diseases, chronic kidney disease epidemiology study group equations) for drug dosing in HIV-infected patients. PATIENTS AND METHODS: We performed a monocentric study. GFR was measured using the gold standard method (plasma clearance of iohexol) in 230 HIV-infected patients. Concordance rate was evaluated between measured GFR (mGFR) and estimated GFR (eGFR) for different GFR categories (GFR>90 mL/min, GFR<90 mL/min, GFR>70 mL/min, and GFR<70 mL/min)...
May 9, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28496044/comparison-of-nephrotoxicity-between-two-gadolinium-contrasts-gadodiamide-and-gadopentetate-in-patients-with-mildly-diminished-renal-failure
#13
Shokichi Naito, Hiromi Tazaki, Tomoko Okamoto, Kazuhiro Takeuchi, Shinichi Kan, Yasuo Takeuchi, Kouju Kamata
Although gadolinium (Gd)-based contrast media have been found to be nephrotoxic, their nephrotoxicity, and the dependence of nephrotoxicity on chelate types, have not been assessed in patients with normal or mildly diminished renal failure. This prospective, randomized study compared the nephrotoxicity of low doses of the nonionic Gd-based contrast medium gadodiamide (Omniscan®) and the ionic Gd-based contrast medium gadopentetate (Magnevist®) in patients with serum creatinine < 1.6 mg/dL. Patients aged 20 to 80 years, weighing 45 to 70 kg and with normal or < 1...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28489464/results-of-a-randomized-controlled-pilot-trial-of-intravascular-renal-denervation-for-management-of-treatment-resistant-hypertension
#14
Lotte Jacobs, Alexandre Persu, Qi-Fang Huang, Jean-Philippe Lengelé, Lutgarde Thijs, Frank Hammer, Wen-Yi Yang, Zhen-Yu Zhang, Jean Renkin, Peter Sinnaeve, Fang-Fei Wei, Agnès Pasquet, Fadl Elmula M Fadl Elmula, Marc Carlier, Arif Elvan, Cora Wunder, Sverre E Kjeldsen, Stefan W Toennes, Stefan Janssens, Peter Verhamme, Jan A Staessen
OBJECTIVE: Previous trials of catheter-based renal-artery denervation (RDN) as treatment modality in resistant hypertension (rHT) generated unconvincing results. In the Investigator-Steered Project on Intravascular Denervation for Management of Treatment-Resistant Hypertension (INSPiRED; NCT01505010), we optimized selection and management of rHT patients. METHODS: With ethical clearance to randomize 18 patients, three Belgian hypertension centers screened 29 rHT patients on treatment with ≥3 drugs, of whom 17 after optimization of treatment (age <70 years; systolic/diastolic office blood pressure (BP) ≥ 140/90 mm Hg; 24-h BP ≥130/80 mm Hg; glomerular filtration rate [eGFR] ≥ 45 mL/min/1...
May 10, 2017: Blood Pressure
https://www.readbyqxmd.com/read/28483858/validation-of-a-routine-two-sample-iohexol-plasma-clearance-assessment-of-gfr-and-an-evaluation-of-common-endogenous-markers-in-a-rat-model-of-ckd
#15
Mandy E Turner, Kimberly J Laverty, Paul S Jeronimo, Martin Kaufmann, Glenville Jones, Christine A White, Rachel M Holden, Michael A Adams
Endogenous markers of kidney function are insensitive to early declines in glomerular filtration rate (GFR) and in rodent models, validated, practical alternatives are unavailable. In this study, we determined GFR by modeling the plasma clearance of two compounds, iohexol and inulin, and compared the findings to common endogenous markers. All plasma clearance methods of both iohexol and inulin detected a decline in renal function weeks prior to any increase in endogenous marker. Iohexol plasma clearance and inulin plasma clearance had a very high agreement and minimal bias when using 12-sample models...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28483464/urinary-albumin-excretion-and-chronic-kidney-disease-in-children-with-vesicoureteral-reflux
#16
Romaine de Sépibus, François Cachat, Blaise J Meyrat, Gezim Dushi, Ariane Boubaker, Mohamed Faouzi, Eric Girardin, Hassib Chehade
BACKGROUND: Albuminuria is a potential biomarker of chronic kidney disease (CKD) in various glomerular diseases. Vesicoureteral reflux (VUR) often progresses to CKD, and study is required of use of albuminuria as a biomarker for this condition. The aim of this study was to evaluate the association between albuminuria and glomerular filtration rate (GFR) or filtration fraction (FF) in children with VUR. STUDY DESIGN: In this retrospective study, renal parameters of 141 children with VUR were investigated, using inulin clearance, FF, and albuminuria...
April 26, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28481829/a-population-pharmacokinetic-analysis-to-study-the-effect-of-therapeutic-hypothermia-on-vancomycin-disposition-in-children-resuscitated-from-cardiac-arrest
#17
Nicole R Zane, Michael D Reedy, Marc R Gastonguay, Adam S Himebauch, Evan Z Ramsey, Alexis A Topjian, Athena F Zuppa
OBJECTIVES: Limited data exist on the effects of therapeutic hypothermia on renal function and pharmacokinetics in pediatric patients after cardiac arrest. The objective was to describe the differences in vancomycin disposition in pediatric patients following cardiac arrest treated with either therapeutic hypothermia or normothermia using population pharmacokinetic modeling. DESIGN: Single-center, retrospective cohort study. SETTING: A tertiary care hospital pediatric and cardiac ICU...
May 5, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28457398/serum-magnesium-and-related-factors-in-long-term-renal-transplant-recipients-an-observational-study
#18
N Rodrigues, A Santana, J Guerra, M Neves, C Nascimento, J Gonçalves, A G da Costa
BACKGROUND: Low serum magnesium (MgS) is a known risk factor for cardiovascular and mineral bone disease. In renal transplant recipients (RTRs), low MgS levels have been related to higher glomerular filtration rates (GFR) and with calcineurin inhibitors, particularly tacrolimus. We aimed to evaluate MgS in renal transplant recipients with over 1 year of follow-up to establish related risk factors and the impact of the use of cyclosporine versus tacrolimus. METHODS: Cross-sectional study of 94 RTRs with more than 12 months of follow-up...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28457076/improvement-in-creatinine-clearance-after-open-heart-surgery-in-infants-as-an-early-indicator-of-surgical-success
#19
Amit Dagan, Ovadia Dagan
BACKGROUND: Early surgical correction of congenital heart malformations in neonates and small infants may be complicated by acute kidney injury (AKI), which is associated with higher morbidity and mortality rates, especially in patients who require dialysis. Glomerular filtration rate (GFR) is considered the best measurement of renal function which, in neonates and infants, is highly dependent on heart function. OBJECTIVES: To determine whether measurements of creatinine clearance after open heart surgery in neonates and young infants can serve as an early indicator of surgical success or AKI...
December 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28446744/levetiracetam-pharmacokinetics-in-a-patient-with-intracranial-hemorrhage-undergoing-continuous-veno-venous-hemofiltration
#20
Edward T Van Matre, Scott W Mueller, Douglas N Fish, Robert MacLaren, Luis F Cava, Robert T Neumann, Tyree H Kiser
BACKGROUND Levetiracetam is an antiepileptic drug frequently used in critically ill patients. Levetiracetam is primarily eliminated as a parent compound via glomerular filtration and requires dose adjustment in renal insufficiency, but the literature on patients receiving continuous veno-venous hemofiltration (CVVH) is scant. CASE REPORT We report the levetiracetam pharmacokinetic profile of a patient being treated with levetiracetam 1000 mg intravenously every 12 h who required continuous veno-venous hemofiltration (CVVH)...
April 27, 2017: American Journal of Case Reports
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