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renal resistance index

Ye Seul Yang, Min Hyuk Lim, Seong Ok Lee, Eun Roh, Chang Ho Ahn, Soo Heon Kwak, Young Min Cho, Sungwan Kim, Andrea Mari, Kyong Soo Park, Hye Seung Jung
AIMS: Angiotensin receptor blockers (ARB) are anti-hypertensive drugs with renal protective effect. Additionally, they have been associated with the delayed onset of type 2 diabetes in high-risk populations, and some ARB were reported to increase insulin secretion and sensitivity in patients with prediabetes. Therefore, we studied the effects of ARB on insulin secretion in hypertensive patients with type 2 diabetes. MATERIALS AND METHODS: Forty-one patients were enrolled in this open-labeled, active comparator-controlled and crossover study...
March 15, 2018: Diabetes, Obesity & Metabolism
Tetsutaro Matayoshi, Kei Kamide, Ryoichi Tanaka, Tetsuya Fukuda, Takeshi Horio, Yoshio Iwashima, Fumiki Yoshihara, Satoko Nakamura, Hajime Nakahama, Yusuke Ohya, Yuhei Kawano
Background: The results of recent trials have brought some confusion to the treatment strategy for renal artery stenosis (RAS). To evaluate the applicability of percutaneous transluminal renal angioplasty (PTRA) for RAS, we extracted the factors that may affect the effectiveness of PTRA from cases experienced at a hypertension center. Methods and Results: We retrospectively assessed the blood pressure (BP) lowering effects and renoprotective effects in 50 consecutive patients that had hemodynamically significant RAS and had undergone PTRA and stenting during 2001-2005...
2018: International Journal of Hypertension
Xiaohang Li, Jialin Zhang, Yiman Meng, Lei Yang, Fengshan Wang, Baifeng Li, Xitong Zhang
BACKGROUND: Renal transplant is the preferred treatment option for these patients with end-stage renal disease. Transplant renal artery stenosis (TRAS) is one of the most common and serious vascular complications after renal transplantation, and most of the TRAS occurred in the anastomosis. The complication must be diagnosed and treated timely, otherwise the function of transplanted kidney may be losed. CASE PRESENTATION: A 46-year-old male with end-stage renal disease of unknown cause received a cadaveric renal transplant one year ago...
March 9, 2018: BMC Nephrology
Lucia Taramasso, Michele Mirabella, Francesca Cappadona, Barbara Bonino, Niccolo Riccardi, Giovanni Cenderello, Giuseppe Vittorio De Socio, Claudio Viscoli, Francesca Viazzi, Antonio Di Biagio
OBJECTIVES: to compare the prevalence of target-organ damage (TOD), defined as carotid plaque, or intima media thickness, cIMT, >0.9 mm, and that of increased renal resistive index (RRI), among HIV-1-infected patients (PLWHIV) and uninfected hypertensive patients (HT-non HIV). METHODS: PLWHIV aged > 40 years and virologically suppressed were matched with pair-age, sex and BMI HT-non HIV. Patients on antihypertensive treatment were excluded. All patients' cIMT and RRI were evaluated with ultrasonography...
March 7, 2018: Current Hypertension Reviews
Jenny Skytte Larsson, Vitus Krumbholz, Anders Enskog, Gudrun Bragadottir, Bengt Redfors, Sven-Erik Ricksten
OBJECTIVE: Data on renal hemodynamics, function, and oxygenation in early clinical septic shock are lacking. We therefore measured renal blood flow, glomerular filtration rate, renal oxygen consumption, and oxygenation in patients with early septic shock. DESIGN: Prospective comparative study. SETTING: General and cardiothoracic ICUs. PATIENTS: Patients with norepinephrine-dependent early septic shock (n = 8) were studied within 24 hours after arrival in the ICU and compared with postcardiac surgery patients without acute kidney injury (comparator group, n = 58)...
March 6, 2018: Critical Care Medicine
Ayu Ogawa-Akiyama, Hitoshi Sugiyama, Masashi Kitagawa, Keiko Tanaka, Akifumi Onishi, Toshio Yamanari, Hiroshi Morinaga, Haruhito Adam Uchida, Kazufumi Nakamura, Hiroshi Ito, Jun Wada
Cystatin C is a cysteine protease inhibitor that is produced by nearly all human cells. The serum level of cystatin C is a stronger predictor of the renal outcome and the risk of cardiovascular events than the creatinine level. The resistive index (RI) on renal Doppler ultrasonography is a good indicator of vascular resistance as well as the renal outcomes in patients with chronic kidney disease (CKD). However, it is unclear whether serum cystatin C is associated with signs of vascular dysfunction, such as the renal RI...
2018: PloS One
Giulio Sergio Roi, Giovanni Mosconi, Valentina Totti, Maria Laura Angelini, Erica Brugin, Patrizio Sarto, Laura Merlo, Sergio Sgarzi, Michele Stancari, Paola Todeschini, Gaetano La Manna, Andrea Ermolao, Ferdinando Tripi, Lucia Andreoli, Gianluigi Sella, Alberto Anedda, Laura Stefani, Giorgio Galanti, Rocco Di Michele, Franco Merni, Manuela Trerotola, Daniela Storani, Alessandro Nanni Costa
AIM: To evaluate the effect of a 12-mo supervised aerobic and resistance training, on renal function and exercise capacity compared to usual care recommendations. METHODS: Ninety-nine kidney transplant recipients (KTRs) were assigned to interventional exercise (Group A; n = 52) and a usual care cohort (Group B; n = 47). Blood and urine chemistry, exercise capacity, muscular strength, anthropometric measures and health-related quality of life (HRQoL) were assessed at baseline, and after 6 and 12 mo...
February 24, 2018: World Journal of Transplantation
Roberta Ricotti, Giulia Genoni, Enza Giglione, Alice Monzani, Martina Nugnes, Sara Zanetta, Matteo Castagno, Agostina Marolda, Giorgio Bellomo, Gianni Bona, Simonetta Bellone, Flavia Prodam
BACKGROUND: Childhood obesity represents a major health concern worldwide due to its well established detrimental effect on cardiovascular and its potential negative effect on kidney functions. However, biomarkers that can help diagnose early stages of kidney damage in obese children represent an unmet clinical need. OBJECTIVES: In this study, we asked whether the prevalence of microalbuminuria, estimated glomerular filtration rate (eGFR) or hyperuricemia recorded in a wide cohort of obese children and adolescents would positively correlate with cardiometabolic dysfunction in these subjects...
2018: PloS One
L I Minchao, G U Liubao, Y A N G Jun, L O U Qinglin
BACKGROUND: The correlation between serum uric acid (SUA) and β-cell function remains controversial. The present study aims to use a new index, renal function-normalized SUA, to observe its correlation with β-cell function in type 2 diabetes (T2DM) patients. METHODS: 713 patients with T2DM received standard 75g oral glucose tolerance (OGTT) and insulin release test were included in the present study. Renal function-normalized SUA was calculated using SUA/creatinine...
March 5, 2018: Diabetes/metabolism Research and Reviews
Bruna Bellincanta Nicoletto, Elis Forcellini Pedrollo, Larissa Salomoni Carpes, Natália Gomes Coloretti, Thaiana Cirino Krolikowski, Gabriela Corrêa Souza, Luiz Felipe Santos Gonçalves, Roberto Ceratti Manfro, Luis Henrique Canani
BACKGROUND: The adipokine progranulin has metabolic proprieties, playing a role in obesity and insulin resistance. Its levels seems to be dependent of renal function, since higher progranulin concentration is observed in patients with end-stage kidney disease. However, the effect of kidney transplantation on progranulin remains unknown. OBJECTIVE: To assess the serum progranulin levels in kidney transplant recipients before and after kidney transplantation. METHODS: Forty-six prospective kidney transplant recipients were included in this longitudinal study...
2018: PloS One
J Reinier F Narvaez, Jing Nie, Katia Noyes, Mary Leeman, Liise K Kayler
Understanding risk factors for deceased-donor kidney non-transplantation is important since discard rates remain high. We analyzed DonorNet® data of consecutive deceased-donor non-mandatory share primary kidney-only offers to adult candidates at our center and beyond between July 1, 2015 and March 31, 2016 for donor- and system-level risk factors of discard, defined as non-transplantation at our or subsequent transplant centers. Exclusions were HCV/HBV, blood type AB, and donor< 1 year based on low candidate waitlist size...
March 2, 2018: American Journal of Transplantation
Angela Rosenbohm, Gabriele Nagel, Raphael S Peter, Torben Brehme, Wolfgang Koenig, Luc Dupuis, Dietrich Rothenbacher, Albert C Ludolph
Importance: Knowledge about the metabolic states of patients with amyotrophic lateral sclerosis (ALS) may provide a therapeutic approach. Objective: To investigate the association between the onset and prognosis of ALS and serum retinol-binding protein 4 (RBP4) concentration as a biomarker for insulin resistance and vitamin A metabolism. Design, Setting, and Participants: Case-control design for risk factors of ALS; cohort design for prognostic factors within ALS cases...
February 26, 2018: JAMA Neurology
Giorgia Comai, Olga Baraldi, Vania Cuna, Valeria Corradetti, Andrea Angeletti, Seidju Brunilda, Irene Capelli, Maria Cappuccilli, Gaetano LA Manna
BACKGROUND: Both amylase and resistive index (RI) are routinely measured after kidney transplant and proposed as markers of delayed graft function (DGF). MATERIAL AND METHODS: This retrospective cross-sectional study analyzed amylase and RI in 269 renal transplant recipients before and after transplantation, and at discharge. An increase above 20% of total amylase with/without RI>0.7 were evaluated as prognostic markers of DGF, hospitalization length and risk of rejection...
March 2018: In Vivo
Simone Brardi, Gabriele Cevenini, Vanni Giovannelli, Giuseppe Romano
OBJECTIVE: This longitudinal prospective observational type study was conceived with the aim to examine the impact on renal resistive index (RRI) of the variables that we can manipulate with therapeutic and or dietetic interventions in a chronic kidney disease population in order to known which of these variables was statistically related to changes in RRI and therefore could become the object of the greatest therapeutic effort. MATERIAL AND METHODS: This study was undertaken between May 2016 to May 2017 in the outpatient nephrology and urology clinic of San Donato Hospital in Arezzo...
December 31, 2017: Archivio Italiano di Urologia, Andrologia
Lawrence A Olatunji, Olatunde P Olabode, Olawale M Akinlade, Abiola S Babatunde, Victoria A Olatunji, Ayodele O Soladoye
Background: A seemingly interesting observation in patients with sickle cell anaemia (SCA) is that they usually have lower systemic blood pressures (BP) and insulin resistance than persons in the general population in spite of chronic inflammation and vasculopathy. However, relative systemic hypertension (rHTN) has been linked to pulmonary hypertension, increased blood viscosity and renal insufficiency, which could indicate a risk of developing cardiometabolic disorder (CMD) in SCA.We therefore hypothesized that neck circumference (NC) and CMD marker; triglyceride glucose (TyG) index would independently predict rHTN in young adults with SCA in steady state...
2018: Clinical Hypertension
Yusuke Sata, Dagmara Hering, Geoffrey A Head, Antony S Walton, Karlheinz Peter, Petra Marusic, Jaqueline Duval, Rebecca Lee, Louise J Hammond, Elisabeth A Lambert, Gavin W Lambert, Murray D Esler, Markus P Schlaich
BACKGROUND: Renal denervation (RDN) can reduce blood pressure (BP) in patients with resistant hypertension, but less so in patients with isolated systolic hypertension. A possible explanation is that patients with stiffer arteries may have lesser neural contribution to their hypertension. METHOD: We hypothesized that arterial stiffness predicts the response to RDN. From ambulatory BP monitoring (ABPM), ambulatory arterial stiffness index (AASI) was calculated as 1 - the regression slope of DBP versus SBP...
February 20, 2018: Journal of Hypertension
Tarik Emre Sener, Yiloren Tanidir, Saeed Bin Hamri, Ibrahim Halil Sever, Burcu Ozdemir, Abdulla Al-Humam, Olivier Traxer
OBJECTIVE: This study aimed to investigate the effects of flexible ureteroscopy (F-URS) on renal blood flow using renal Doppler ultrasound (US). MATERIALS AND METHOD: Patients undergoing F-URS were scheduled for Doppler US preoperatively and postoperatively. Peak systolic velocity (PSV), end-diastolic velocity (EDV), resistive index (RI) and pulsatility index (PI) were reported. Technical details, operation time, stone characteristics and complications were recorded...
February 20, 2018: Scandinavian Journal of Urology
Clemens Grupp, Michael J Koziolek, Manuel Wallbach, Kerstin Hoxhold, Gerhard A Müller, Carsten Bramlage
Detection of renal artery stenosis (RAS) using Doppler is difficult to evaluate, particularly under conditions such as bilateral RAS or difficultly accessible renal arteries (RA). The objective of the present study was to assess the utility of splenic arterial compared to renal flow as an additional parameter in the Doppler evaluation of RAS. The difference between the resistive indices (RI) determined in renal and splenic parenchymal arteries (ΔRI K-S ) was evaluated in 181 hypertensive subjects without any evidence of RAS...
February 16, 2018: Journal of Clinical Hypertension
Konstantinos Stavropoulos, Konstantinos P Imprialos, Vasilios G Athyros, Michael Doumas
No abstract text is available yet for this article.
February 16, 2018: Journal of Clinical Hypertension
Benjamin Y Andrew, Anne D Cherry, Jennifer N Hauck, Alina Nicoara, Cory D Maxwell, Ryan M Konoske, Annemarie Thompson, Lakshmi D Kartha, Madhav Swaminathan, Mark Stafford-Smith
BACKGROUND: Acute kidney injury (AKI) is a common serious complication following cardiac surgery. Doppler-determined renal resistive index (RRI) is a promising early AKI biomarker in this population. However, the relationship between aortic valve pathology (insufficiency and/or stenosis) and RRI is unknown. This study aimed to investigate RRI variability related to aortic valve pathology. METHODS: In a retrospective review of cardiac surgery patients, RRI and aortic valve pathology were assessed prior to cardiopulmonary bypass using transesophageal echocardiography...
February 7, 2018: Annals of Thoracic Surgery
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