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renal resistance index

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https://www.readbyqxmd.com/read/29777769/a-combined-approach-for-the-early-recognition-of-acute-kidney-injury-after-adult-cardiac-surgery
#1
Cédrick Zaouter, Julien Potvin, Marie-Lise Bats, Marie-Christine Beauvieux, Alain Remy, Alexandre Ouattara
BACKGROUND: Cardiac surgery-associated acute kidney injury (CSA-AKI) is a frequent complication. The current criteria to detect CSA-AKI rise only when organic dysfunction has occurred. The Doppler Renal Resistive Index (RRI) and the urinary G1 cell cycle arrest proteins (TIMP-2 and IGFBP7) have been advocated to predict CSA-AKI at an early stage after cardiac surgery. The primary objective was to determine the predictive value of these new markers to detect CSA-AKI after elective heart surgery in patients at risk to develop AKI...
May 16, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29766465/effects-of-fenoldopam-on-renal-blood-flow-in-hypertensive-chronic-kidney-disease
#2
Valentina Rovella, Michele Ferrannini, Manfredi Tesauro, Giulia Marrone, Andrea Busca, Roberto Sorge, Simone Manca di Villahermosa, Maurizio Casasco, Nicola Di Daniele, Annalisa Noce
BACKGROUND AND AIM: The synthetic drug fenoldopam mesylate (FM) may have a renoprotective role, and a "renal dose" of 0.1 µg/kg/min intravenous (IV) infusion of FM has been reported as able to increase renal blood flow without affecting systemic blood pressure. But conclusive data are still lacking. We aimed to investigate by color-Doppler ultrasonography the effects of IV administration of FM at this dosage in hypertensive chronic kidney disease (CKD) patients, and verify whether it may induce any systemic hemodynamic alteration...
May 15, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29763902/prognostic-factors-of-renal-involvement-in-systemic-sclerosis
#3
Edoardo Rosato, Antonietta Gigante, Biagio Barbano, Maria Ludovica Gasperini, Rosario Cianci, Maurizio Muscaritoli
BACKGROUND/AIMS: Renal involvement is common in systemic sclerosis (SSc), including asymptomatic reduction of glomerular filtration rate (GFR), increased renal resistance indices, scleroderma renal crisis (SRC) and ANCA-associated vasculitis. The aim was to evaluate type and evolution of renal involvement for a period of five years. METHODS: 121 SSc patients (100 F, 21 M) with mean age of 54.9 ± 13.8, disease duration of 9 ± 6 years, of which 62 had a diffused form and 59 limited form were enrolled...
May 10, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29755405/dual-paraneoplastic-endocrine-syndromes-heralding-onset-of-extrapulmonary-small-cell-carcinoma-a-case-report-and-narrative-review
#4
Jill B Feffer, Natalia M Branis, Jeanine B Albu
Objective: Extrapulmonary small cell carcinoma (EPSCC) is rare and frequent metastases at presentation can complicate efforts to identify a site of origin. In particular, SCC comprises <1% of prostate cancers and has been implicated in castration resistance. Methods: Clinical, laboratory, imaging, and pathology data are presented. Results: A 56-year-old man with locally advanced prostate adenocarcinoma on androgen deprivation therapy presented with a clogged nephrostomy tube...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29753670/intraoperative-renal-resistive-index-as-an-acute-kidney-injury-biomarker-development-and-validation-of-an-automated-analysis-algorithm
#5
Benjamin Y Andrew, Elias Y Andrew, Anne D Cherry, Jennifer N Hauck, Alina Nicoara, Carl F Pieper, Mark Stafford-Smith
OBJECTIVE: Intraoperative Doppler-determined renal resistive index (RRI) is a promising early acute kidney injury (AKI) biomarker. As RRI continues to be studied, its clinical usefulness and robustness in research settings will be linked to the ease, efficiency, and precision with which it can be interpreted. Therefore, the authors assessed the usefulness of computer vision technology as an approach to developing an automated RRI-estimating algorithm with equivalent reliability and reproducibility to human experts...
April 4, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29729361/predictor-role-of-pre-treatment-resistive-and-pulsatile-indexes-in-success-of-medical-expulsive-therapy-of-ureteral-stones
#6
Güven Erbay, Ahmet Yalçın, Mehmet HamzaGültekin
OBJECTIVE: To investigate the role of renal resistive and pulsatile index levels measured with renal Doppler ultrasonography in predicting the success of medical expulsive treatment in patients with ureteral stones. MATERIAL AND METHODS: The patients admitted to our clinic between January and December 2017 with a ureteral stone of less than 1 cm in diameter were evaluated in terms of their resistive and pulsatile indices obtained using Doppler ultrasonography, and the localization and diameter of their stone and grade of hydronephrosis using computed tomography at the time of admission...
May 2, 2018: Urology
https://www.readbyqxmd.com/read/29727629/losartan-prevents-the-imbalance-between-renal-dopaminergic-and-renin-angiotensin-systems-induced-by-fructose-overload-l-dopa-dopamine-index-as-new-potential-biomarker-of-renal-dysfunction
#7
Natalia Lucía Rukavina Mikusic, Nicolás Martín Kouyoumdzian, Ana Uceda, Julieta Sofía Del Mauro, Marcela Pandolfo, Mariela Mercedes Gironacci, Ana María Puyó, Jorge Eduardo Toblli, Belisario Enrique Fernández, Marcelo Roberto Choi
BACKGROUND: The renin angiotensin system (RAS) and the renal dopaminergic system (RDS) act as autocrine and paracrine systems to regulate renal sodium management and inflammation and their alterations have been associated to hypertension and renal damage. Nearly 30-50% of hypertensive patients have insulin resistance (IR), with a strong correlation between hyperinsulinemia and microalbuminuria. OBJECTIVE: The aim of this study was to demonstrate the existence of an imbalance between RAS and RDS associated to IR, hypertension and kidney damage induced by fructose overload (FO), as well as to establish their prevention, by pharmacological inhibition of RAS with losartan...
May 1, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29723861/better-renal-resistive-index-profile-in-subjects-with-beta-thalassemia-minor-br-br-br
#8
Fahrettin Basut, Şakir Özgür Keşkek, Bozkurt Gülek
OBJECTIVE: Beta thalassaemia minor is a common genetic disorder without any characteristic symptoms except mild anemia. It is found to be associated with some cardiovascular risk factors such as insulin resistance and diabetes mellitus. The renal resistive index (RRI) is a measure of renal arterial resistance to blood flow. The aim of this study was to evaluate the renal resistive index in subjects with beta thalassaemia minor (BTM). SUBJECTS AND METHODS: A total of 253 subjects were included in this cross-sectional study...
May 3, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29721437/decrease-of-nitric-oxide-and-increase-in-diastolic-blood-pressure-are-two-events-that-affect-renal-function-in-dogs-with-pituitary-dependent-hyperadrenocorticism
#9
Patricia N Vidal, Diego D Miceli, Elber Soler Arias, Elena D'Anna, Jorge D García, Victor Alejandro Castillo
Hyperadrenocorticism is a frequent disease in dogs. The excess of circulating cortisol affects different organs and metabolic pathways, producing severe adverse effects that endanger the animal's life. Among these effects, hypertension and renal damage can be mentioned. A group of 20 dogs with pituitary dependent hyperadrenocorticism (PDH) and 12 control dogs were used to study the following parameters: cortisol and nitric oxide (NO nit/nit ) concentrations, diastolic and systolic blood pressure, renal artery resistance index by Doppler ultrasound, the rate of glomerular filtration by radio-renogram excretion and the presence of proteins in urine...
2018: Open Veterinary Journal
https://www.readbyqxmd.com/read/29714462/comparison-of-percutaneous-nephrostomy-and-double-j-stent-in-symptomatic-pregnancy-hydronephrosis-treatment
#10
Adnan Şimşir, Fuat Kızılay, Bülent Semerci
Background/aim: We aimed to compare the success rate of percutaneous nephrostomy (PCN) and double J stenting (DJS) in the treatment of symptomatic pregnancy hydronephrosis. Materials and methods: Diagnosis and grading of hydronephrosis were performed by urinary ultrasound (USG) and Doppler mode was used for evaluation of renal arterial resistivity index (RI). Patients were divided into two groups according to the method used for the treatment of hydronephrosis: group A (PCN, n = 38) and group B (DJS, n = 46)...
April 30, 2018: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29684655/effect-of-fluid-challenge-on-renal-resistive-index-after-major-orthopaedic-surgery-a-prospective-observational-study-using-doppler-ultrasonography
#11
Fabrice Ferré, Philippe Marty, Cédric Folcher, Matt Kurrek, Vincent Minville
BACKGROUND: A postoperative renal resistive index (RRI) > 0.70 has the best threshold to early predict acute kidney injury (AKI). The response of RRI to a postoperative fluid challenge (FC) is unknown. The aim of our study was to assess the impact of a FC on RRI in suspected hypovolaemia patients after orthopaedic surgery. DESIGN: In this single-centre observational study, we prospectively screened 156 patients in the recovery room after having undergone a hip or knee replacement...
April 20, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29681959/levosimendan-in-patients-with-low-ejection-fraction-undergoing-cardiac-surgery
#12
Ewa M Kucewicz-Czech, Tomasz Maciejewski, Barbara Budziarz, Tadeusz Kołodziej, Kazimierz Kiermasz, Leszek Machej
Introduction: Significant impairment of left ventricular function causes low cardiac output syndrome in the immediate postoperative period in 3-14% of patients undergoing surgery, increasing the mortality 15-fold. Aim: To assess the use of levosimendan in patients undergoing cardiac surgery in 2016. Material and methods: The analysis included 14 patients: 3 (21.4%) women and 11 (78.6%) men aged 65.4 ±11.8 years. The mean value of left ventricular ejection fraction amounted to 20 ±6...
March 2018: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/29673104/omega-3-polyunsaturated-fatty-acid-supplementation-reduces-blood-pressure-but-not-renal-vasoconstrictor-response-to-orthostatic-stress-in-healthy-older-adults
#13
Christine M Clark, Kevin D Monahan, Rachel C Drew
Older adults exhibit augmented renal vasoconstriction during orthostatic stress compared to young adults. Consumption of omega-3 polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) found in fish oil (FO), modulates autonomic nerve activity. However, the effect of omega-3 polyunsaturated fatty acid consumption on the renal vasoconstrictor response to orthostatic stress in young and older adults is unknown. Therefore, 10 young (25 ± 1 years; mean ± SEM) and 10 older (66 ± 2 years) healthy adults ingested 4 g FO daily for 12 weeks, and underwent graded lower body negative pressure (LBNP; -15 and -30 mmHg) pre- and post-FO supplementation...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29651957/serum-uric-acid-elevation-is-associated-to-arterial-stiffness-in-hypertensive-patients-with-metabolic-disturbances
#14
Agustin J Ramirez, Alejandra Ines Christen, Ramiro A Sanchez
INTRODUCTION: Chronic serum uric acid elevation (SUA) is known to be induced by dyslipidemia, hypertension, inflammation, and insulin resistance. Therefore, it has been associated with higher risk for coronary artery disease and cardiovascular mortality. Also, increased levels of SUA have been associated with regional arterial stiffness, assessed by pulse wave velocity (PWV). AIMS: To evaluate the relationships of PWV, SUA and different metabolic parameters in essential hypertensive patients...
April 13, 2018: Current Hypertension Reviews
https://www.readbyqxmd.com/read/29627741/effects-of-renal-sympathetic-denervation-on-myocardial-structure-function-and-perfusion-a-serial-cmr-study
#15
Sinny Delacroix, Ramesh G Chokka, Adam J Nelson, Dennis T Wong, Stephen Pederson, Joanne Nimmo, Adil Rajwani, Kerry Williams, Karen S Teo, Stephen G Worthley
BACKGROUND AND AIMS: Echocardiographic studies have shown improvements in cardiac indices associated with renal sympathetic denervation (RDN), however, the benefits on myocardial perfusion have never been assessed. This trial was designed to study the effects of RDN on myocardial perfusion using cardiac magnetic resonance (CMR) imaging. METHODS: A total of 14 patients with resistant hypertension were recruited for RDN and myocardial perfusion, alongside other CMR indices, was assessed at baseline and at 6 months...
March 10, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29619336/risk-of-acute-kidney-injury-in-critically-ill-surgical-patients-with-presumed-pneumonia-is-not-impacted-by-choice-of-methicillin-resistant-staphylococcus-aureus-therapy
#16
Kelsey B Billups, Erica E Reed, Gary S Phillips, Kurt B Stevenson, Steven M Steinberg, Claire V Murphy
Background: Vancomycin and linezolid are standard treatment options for nosocomial methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. While acute kidney injury (AKI) is commonly attributed to vancomycin, existing data has not definitely confirmed vancomycin as an independent risk factor for AKI. Aims: This study aimed to quantify the incidence of AKI in Surgical Intensive Care Unit (ICU) patients receiving empiric vancomycin or linezolid for nosocomial pneumonia and to identify risk factors for AKI with a focus on MRSA antibiotic therapy...
January 2018: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29607709/impact-of-food-quantity-and-quality-on-the-biochemical-risk-of-renal-stone-formation
#17
Francesco Esperto, Roberto Miano, Martino Marangella, Alberto Trinchieri
OBJECTIVE: This study evaluated the role of body mass index (BMI) and dietary potential renal acid load (PRAL) with urinary saturation for calcium oxalate (US-CaOx), calcium phosphate (US-CaP) and uric acid (US-UA) in renal stone formers. MATERIALS AND METHODS: A retrospective analysis was conducted of laboratory data collected on 442 renal stone-forming patients. Demographic information, BMI and 24 h urinary samples were collected from patients on their regular diets...
April 1, 2018: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/29595692/color-doppler-ultrasound-diagnosis-of-intrarenal-vein-thrombosis-a-rare-case-report-and-literature-review
#18
Yixiu Zhang, Ying Wang, Jianchu Li, Sheng Cai
RATIONALE: We present a case of intrarenal vein thrombosis (IRVT) diagnosed by ultrasound (US). To the best of our knowledge, this is the first reported case in the imaging literature. PATIENT CONCERNS: A 15-year-old boy with a 4-year history of thrombocytopenic purpura presented to the emergency room with a 2-day history of sudden-onset severe left flank pain associated with gross hematuria. DIAGNOSES: Hypercholesterolemia, proteinuria, and elevated plasma creatinine level were present...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29590494/endocrinopathies-and-renal-outcomes-in-lithium-therapy-impact-of-lithium-toxicity
#19
R Dineen, D Bogdanet, D Thompson, C J Thompson, L A Behan, A P McKay, G Boran, C Wall, J Gibney, V O'Keane, M Sherlock
Background: Lithium is the mainstay of treatment for bipolar disorder, mania and an augmentation therapy in patients with treatment resistant depression. It has a narrow therapeutic index, with recognized adverse multi-system and endocrine side effects. Aim: To assess the impact of lithium therapy, in particular lithium toxicity, on the development of endocrine and renal disorders in a cohort of patients in a single tertiary referral centre in Ireland. Study design: A retrospective analysis was performed of the prevalence of lithium toxicity and renal, thyroid and parathyroid dysfunction in our study population...
December 1, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29588078/pulsed-doppler-evaluation-of-renal-perfusion-during-pulsatile-extracorporeal-circulation-a-pilot-study
#20
B Carretero de la Encarnación, E Mateo Rodríguez, C S Romero García, M A Revert Ros
INTRODUCTION: Acute renal failure (ARF) after cardiac surgery is a risk factor associated with mortality and use of resources. Some studies have reported beneficial effects of pulsatile flow on cardiopulmonary bypass (CPB) on renal function. The aim of this study is to describe the echographic morphology of the renal arterial wave modifying the parameters of pulsatile CPB. MATERIAL AND METHOD: Descriptive study was performed on 10 patients without previous AFR and undergoing cardiac surgery with CPB...
March 24, 2018: Revista Española de Anestesiología y Reanimación
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