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renal resistive index

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https://www.readbyqxmd.com/read/27931569/relationship-between-immediate-resistive-index-measurement-after-renal-transplantation-and-renal-allograft-outcomes
#1
B P Mwipatayi, A E Suthananthan, R Daniel, M Rahmatzadeh, S D Thomas, M Phillips, V Vijayan
BACKGROUND: The arterial resistive index, also referred to as the resistive index (RI) or Pourcelot Index, is a measure of pulsatile blood flow. Previous studies have demonstrated the usefulness of the RI as a predictor of allograft outcomes based on RI measurement in the later stages after transplantation. However, there is little evidence of the predictive value of "immediate" RI measurement within 24 hours after transplantation. METHODS: We performed a retrospective cohort study of 305 adult renal transplants carried out between 2003 and 2013...
December 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27925644/evaluation-of-renal-parenchyma-elasticity-with-acoustic-radiation-force-impulse-quantification-in-nutcracker-syndrome-and-comparisons-with-grayscale-doppler-sonography-and-laboratory-findings
#2
Tumay Bekci, Meltem Ceyhan Bilgici, Gurkan Genc, Demet Tekcan, Ahmet Veysel Polat, Leman Tomak
OBJECTIVES: We sought to evaluate renal parenchymal elasticity with Virtual Touch quantification of acoustic radiation force impulse imaging in nutcracker syndrome and to compare shear-wave velocity (SWV) values with grayscale Doppler sonography and laboratory findings. METHODS: Thirty-eight healthy volunteers and forty-three nutcracker syndrome patients were enrolled in this prospective study. SWV values for both kidneys in nutcracker syndrome patients and healthy volunteers were evaluated...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27909903/obesity-and-kidney-cancer
#3
Kathryn M Wilson, Eunyoung Cho
Renal cell cancer (RCC) is the major type of kidney cancer with increasing incidence. Obesity is one of the well-established risk factors for RCC. Meta-analyses including multiple cohort and case-control studies have found a consistent positive association between obesity and RCC. The association appeared to be independent of other RCC risk factors including hypertension and has been often stronger in women, although a positive association has also been observed in men. Obesity has been largely measured as body mass index (BMI)...
2016: Recent Results in Cancer Research
https://www.readbyqxmd.com/read/27900821/the-predictive-value-of-resistive-index-obtained-by-doppler-ultrasonography-early-after-renal-transplantation-on-long-term-allograft-function
#4
Engin Melek, Esra Baskın, Kaan Gulleroglu, Nihal Uslu, Mahir Kırnap, Gokhan Moray, Mehmet Haberal
DUSG is a useful diagnostic tool for the follow-up of renal transplant recipients. The measurement of intrarenal arterial RI by DUSG has been proven to predict short-term AF. The aim of the study was to evaluate the predictive value of DUSG performed during the early after RTx on long-term AF. Seventy patients were enrolled into study. DUSG was performed at third and seventh days after RTx. Patients were divided into two groups according to rate of recovery of graft function as patients with normal graft function and abnormal graft function...
November 29, 2016: Pediatric Transplantation
https://www.readbyqxmd.com/read/27894116/intrarenal-vascular-resistance-is-associated-with-a-prothrombotic-state-in-hypertensive-patients
#5
Cristiana Catena, GianLuca Colussi, Marileda Novello, Valentina Fagotto, Leonardo A Sechi
BACKGROUND/AIMS: Hypertensive nephroangiosclerosis is associated with progressive increase of intrarenal vascular resistance. In addition to blood pressure, other factors can contribute to hypertensive renal damage including a prothrombotic state. We investigated the relationship between hemostatic markers and intrarenal vascular resistance in hypertension. METHODS: In 115 untreated, nondiabetic, hypertensive subjects free of cardiovascular complications and advanced renal function impairment, we measured 24-hour creatinine clearance (GFR) and urinary albumin excretion (UAE), fasting plasma glucose, HOMA-index, and plasma levels of fibrinogen, D-dimer, prothrombin fragment 1+2, plasminogen activator inhibitor-1, homocysteine, and lipoprotein(a)...
November 29, 2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27876431/cystatin-c-vascular-biomarkers-and-measured-glomerular-filtration-rate-in-patients-with-unresponsive-hypertensive-phenotype-a-pilot-study
#6
Velibor Čabarkapa, Branislava Ilinčić, Mirjana Đerić, Viktorija Vučaj Ćirilović, Milena Kresoja, Radmila Žeravica, Vladimir Sakač
BACKGROUND: Biomarkers are commonly used to estimate the presence of subclinical cardiovascular disease (CVD) in patients with essential arterial hypertension (HT). In addition to known association between cystatin C and glomerular filtration rate (GFR), elucidating the association between cystatin C and vascular biomarkers (intima-media thickness of common carotid arteries (CCIMT), carotid plaque and renal artery resistance index (RRI)) in patients with unresponsive hypertensive phenotype could be of significant clinical interest...
November 23, 2016: Renal Failure
https://www.readbyqxmd.com/read/27874971/cefiderocol-a-siderophore-cephalosporin-for-gram-negative-bacterial-infections-pharmacokinetics-and-safety-in-subjects-with-renal-impairment
#7
Takayuki Katsube, Roger Echols, Juan Camilo Arjona Ferreira, Heidi K Krenz, Jolene Kay Berg, Christopher Galloway
Cefiderocol, a new injectable siderophore cephalosporin antibiotic, has promising in vitro and in vivo activity against Gram-negative bacteria including multidrug-resistant Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae. Cefiderocol is mainly renally eliminated. The pharmacokinetics and safety of cefiderocol in subjects with renal impairment were assessed following a single 1000-mg intravenous 1-hour infusion of cefiderocol. Subjects with mild, moderate, or severe renal impairment and end-stage renal disease (ESRD) requiring hemodialysis were compared with demographically (age, body mass index, and sex) matched healthy subjects with normal renal function...
November 22, 2016: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27872642/rationale-and-design-of-rnafh-study-effect-of-rosuvastatin-10%C3%A2-mg-d-on-nonalcoholic-fatty-liver-in-metabolic-syndrome-patients-without-overt-diabetes-evaluated-by-1-h-magnetic-resonance-spectroscopy
#8
Fan Ping, Xuan Wang, Jing Yang, Mei-Cen Zhou, Wei Li, Ling-Ling Xu, Yu-Xiu Li
Objective. The RNAFH study (effect of rosuvastatin on nonalcoholic fatty liver disease in metabolic syndrome patients without overt diabetes evaluated by (1)H-MRS) is a prospective randomized, single-center, open-label trail designed to assess the effect of rosuvastatin on the intrahepatocellular lipid (IHCL) level of nonalcoholic fatty liver disease (NAFLD). Methods. 40 NAFLD patients meeting inclusion and exclusion criteria with metabolic syndrome (MS) but without overt diabetes mellitus will be included...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27846812/predictors-of-hospitalization-of-tuberculosis-patients-in-montreal-canada-a-retrospective-cohort-study
#9
Lisa A Ronald, J Mark FitzGerald, Andrea Benedetti, Jean-François Boivin, Kevin Schwartzman, Gillian Bartlett-Esquilant, Dick Menzies
BACKGROUND: Hospitalization is the most costly health system component of tuberculosis (TB) control programs. Our objectives were to identify how frequently patients are hospitalized, and the factors associated with hospitalizations and length-of-stay (LOS) of TB patients in a large Canadian city. METHODS: We extracted data from the Montreal TB Resource database, a retrospective cohort of all active TB cases reported to the Montreal Public Health Department between January 1996 and May 2007...
November 15, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27826600/a-prospective-study-of-renal-transplant-recipients-a-fall-in-insulin-secretion-underpins-dysglycemia-after-renal-transplantation
#10
David Langsford, Varuni Obeyesekere, Sara Vogrin, Jessie Teng, Richard J MacIsaac, Glenn Ward, Frank Alford, Karen M Dwyer
BACKGROUND: Dysglycemia (encompassing impaired glucose tolerance and diabetes mellitus) arising after renal transplantation is common and confers a significant cardiovascular mortality risk. Nonetheless, the pathophysiology of posttransplant dysglycemia is not well described. The aim of this study was to prospectively and comprehensively assess glucose handling in renal transplant recipients from before to 12 months after transplantation to determine the underpinning pathophysiology. MATERIALS AND METHODS: Intravenous and oral glucose tolerance testing was conducted before and at 3 and 12 months posttransplantation...
November 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27801303/levosimendan-use-increases-cardiac-performance-after-coronary-artery-bypass-grafting-in-end-stage-renal-disease-patients
#11
Hakan Atalay, Zeki Temizturk, Hasan Baki Altinsoy, Davut Azboy, Salih Colak, Atakan Atalay, Omer Faruk Dogan
BACKGROUND: The effect of levosimendan on myocardial performance has not been studied in dialysis-dependent end-stage renal disease patients who have undergone coronary artery bypass grafting (CABG) surgery. Our aim was to investigate the effect of levosimendan on postoperative hemodynamic effects in end-stage renal disease patients undergoing CABG operation. METHODS: We performed 58 elective isolated CABG operations in end-stage renal disease patients. The study group received levosimendan at a slow bolus dose of 3 µg/kg, followed by a 24-hour infusion of 0...
October 27, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/27799177/non-invasive-measurement-of-renal-perfusion-and-oxygen-metabolism-to-predict-postoperative-acute-kidney-injury-in-neonates-and-infants-after-cardiopulmonary-bypass-surgery
#12
F Neunhoeffer, M Wiest, K Sandner, H Renk, E Heimberg, C Haller, M Kumpf, C Schlensak, M Hofbeck
BACKGROUND: The pathophysiology of acute kidney injury (AKI) after cardiopulmonary bypass surgery for congenital heart disease is not completely understood. The aim of this study was to carry out a prospective analysis of the diagnostic value of non-invasive monitoring of renal oxygenation and microcirculation by combining laser Doppler flowmetry and tissue spectrometry. METHODS: In 50 neonates and infants who underwent repair (n = 31) or neonatal palliation (n = 19) of congenital heart disease with cardiopulmonary bypass, renal oxygenation, and microcirculatory flow, the approximate renal metabolic rate of oxygen and Doppler-based renal resistive index were determined after surgery...
November 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/27779461/differential-effects-of-lercanidipine-enalapril-versus-amlodipine-enalapril-and-hydrochlorothiazide-enalapril-on-target-organ-damage-and-sympathetic-activation-in-non-obese-essential-hypertensive-subjects
#13
K Tsioufis, Costas Tsioufis, Kyriakos Dimitriadis, Emmanouil Mantzouranis, Ilianna Mani, Dimitrios Tousoulis
OBJECTIVE: The aim of the present study was to compare the effects of the combination of lercanidipine/enalapril versus amlodipine/enalapril and hydrochlorothiazide/enalapril on blood pressure, target organ damage and sympathetic activation in patients with grade 2 essential hypertension. RESEARCH DESIGN AND METHODS: This was a 3 month, randomized, blinded-endpoint study in essential hypertensive patients. MAIN OUTCOME MEASURES: Office and ambulatory blood pressure, arterial stiffness, urinary albumin to creatinine ratio, renal arterial resistive index, and muscle sympathetic nerve activity were evaluated at baseline, after a 2 week run-in placebo period, at 1 month and at 3 months...
October 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/27770799/correction-of-metabolic-acidosis-improves-insulin-resistance-in-chronic-kidney-disease
#14
Antonio Bellasi, Lucia Di Micco, Domenico Santoro, Stefania Marzocco, Emanuele De Simone, Mario Cozzolino, Luca Di Lullo, Pasquale Guastaferro, Biagio Di Iorio
BACKGROUND: Correction of metabolic acidosis (MA) with nutritional therapy or bicarbonate administration is widely used in chronic kidney disease (CKD) patients. However, it is unknown whether these interventions reduce insulin resistance (IR) in diabetic patients with CKD. We sought to evaluate the effect of MA correction on endogenous insulin action in diabetic type 2 (DM2) CKD patients. METHODS: A total of 145 CKD subjects (83 men e 62 women) with DM2 treated with oral antidiabetic drugs were included in the study and followed up to 1 year...
October 22, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27754214/os-31-06-comparison-between-the-effects-of-hydrochlorothiazide-and-indapamide-on-the-kidney-in-hypertensive-patients-inadequately-controlled-with-losartan
#15
Xiaoping Chen, Si Wang, Jiangbo Li, Xiaoyan Zhou, Kai Liu, Xin Zhang, Qingtao Meng, Rufeng Shi, Di Shi
OBJECTIVE: The aim of the study is to compare the effects of hydrochlorothiazide and indapamide on the kidney in hypertensive patients inadequately controlled with losartan. DESIGN AND METHOD: 140 hypertensive patients who met the criteria and were inadequately controlled with losartan 50 mg/d for 2 weeks were randomized to administered with hydrochlorothiazide 12.5 mg/d (n = 70) or indapamide (sustained release) 1.5 mg/d (n = 70) in combination with losartan 50 mg/d...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27747373/coronary-flow-reserve-in-patients-with-resistant-hypertension
#16
Sebastian Völz, Sara Svedlund, Bert Andersson, Gan Li-Ming, Bengt Rundqvist
Resistant hypertension is associated with increased risk for cardiovascular events. Coronary flow reserve (CFR) is impaired in patients with hypertension and an independent predictor of cardiac mortality. However, there are no published data on CFR in the subset of treatment-resistant hypertension. The aim of this study was to assess CFR in patients with resistant hypertension. Twenty-five consecutive patients with primary resistant hypertension, scheduled for renal denervation, 25 matched patients with controlled hypertension, and 25 healthy controls underwent transthoracic colour Doppler echocardiography at rest and during adenosine infusion...
October 17, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/27744392/effects-of-longterm-treatment-with-bosentan-and-iloprost-on-nailfold-absolute-capillary-number-fingertip-blood-perfusion-and-clinical-status-in-systemic-sclerosis
#17
Amelia Chiara Trombetta, Carmen Pizzorni, Barbara Ruaro, Sabrina Paolino, Alberto Sulli, Vanessa Smith, Maurizio Cutolo
OBJECTIVE: To quantify in patients with systemic sclerosis (SSc) the absolute nailfold capillary number/mm (the absolute number of capillaries, observable in the first row, in 1 mm per field) and fingertip blood perfusion (FBP) during longterm therapy with the endothelin receptor antagonist bosentan (BOSE) and the synthetic analog of prostacyclin PGI2 iloprost (ILO) by multiple diagnostic tools. Observed values were correlated with clinical outcomes. METHODS: Thirty patients with SSc already receiving intravenous ILO (80 μg/day) for 5 continuous days (every 3 mos) were recruited in the clinic...
October 1, 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27729624/metabolic-syndrome-prevalence-and-risk-factors-in-korean-gout-patients
#18
Jae Hyun Jung, Gwan Gyu Song, Jong Dae Ji, Young Ho Lee, Jae-Hoon Kim, Young Ho Seo, Sung Jae Choi
Background/Aims: We performed this study to investigate associations between metabolic syndrome, chronic kidney disease (CKD), and gout. Methods: We reviewed the medical records of 151 patients with gout at the Department of Rheumatology in Korea University Ansan Hospital. The following measures were examined: waist circumference, blood pressure, alcohol consumption, and levels of triglyceride, high density lipoprotein cholesterol, fasting serum glucose, serum uric acid (SUA), creatinine, insulin, and C-peptide...
October 12, 2016: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/27721797/increased-blood-pressure-variability-prior-to-chronic-kidney-disease-exacerbates-renal-dysfunction-in-rats
#19
Frederico F C T Freitas, Gilberto Araujo, Marcella L Porto, Flavia P S Freitas, Jones B Graceli, Camille M Balarini, Elisardo C Vasquez, Silvana S Meyrelles, Agata L Gava
Increased blood pressure variability (BPV), which can be experimentally induced by sinoaortic denervation (SAD), has emerged as a new marker of the prognosis of cardiovascular and renal outcomes. Considering that increased BPV can lead to organ-damage, the goal of the present study was to evaluate the effects of SAD on renal function in an experimental model of chronic kidney disease (CKD). SAD was performed in male Wistar rats 2 weeks before 5/6 nephrectomy and the animals were evaluated 4 weeks after the induction of CKD...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27701167/metabolic-and-hormonal-determinants-of-glomerular-filtration-rate-and-renal-hemodynamics-in-severely-obese-individuals
#20
Edoardo Vitolo, Eleonora Santini, Antonio Salvati, Duccio Volterrani, Valerio Duce, Rosa Maria Bruno, Anna Solini
OBJECTIVE: Renal function is often compromised in severe obesity. A true measurement of glomerular filtration rate (GFR) is unusual, and how estimation formulae (EstForm) perform in such individuals is unclear. We characterized renal function and hemodynamics in severely obese individuals, assessing the reliability of EstForm. METHODS: We measured GFR (mGFR) by iohexol plasma clearance, renal plasma flow (RPF) by 123I-ortho-iodo-hippurate, basal and stimulated vascular renal indices, endothelium-dependent and -independent vasodilation using flow-mediated dilation (FMD) as well as metabolic and hormonal profile in morbid, otherwise healthy, obese subjects...
2016: Obesity Facts
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