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Renal artery stenosis

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https://www.readbyqxmd.com/read/28205351/functional-assessment-of-the-kidneys-in-a-10%C3%A2-month-old-child-with-renal-artery-stenosis-by-intravoxel-incoherent-motion
#1
Jochen Herrmann, Harald Ittrich, Michael Gerhard Kaul, Michael Groth, Magdalini Tozakidou, Martin Blohm, Jun Oh, Gerhard Adam
Renovascular stenosis is an important cause for arterial hypertension in childhood. We report a 10-month-old girl with arterial hypertension caused by right-sided renal artery stenosis detected by Doppler ultrasound. Magnetic resonance imaging (MRI) was performed before renal artery angioplasty to depict vascular anatomy in detail and to retrieve additional functional information of the kidneys by analysis of intravoxel incoherent motion (IVIM). The value of quantitative diffusion weighted imaging of the kidneys prior to percutaneous transluminal renal angioplasty (PTRA) is discussed...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28203024/-significance-of-renal-filtration-fraction-evaluation-of-renal-artery-stenting-for-atherosclerotic-renal-artery-stenosis-treatment
#2
Q C Feng, X Li, J Y Luan, C M Wang, T R Li
OBJECTIVE: To investigate the significance of filtration fraction (FF) and renal artery stenting in the treatment of atherosclerotic renal artery stenosis. METHODS: In the study, 42 cases of renal artery stenosis were treated with 52 renal artery stent implantation. Percutaneous transluminal renal angioplasty and stent (PTRAS) of the patients' health side kidney, ipsilateral kidney (renal) glomerular filtration rate (GFR), renal effective renal plasma flow effective renal plasma flow (ERPF), kidney filtration fraction changes of preoperative and postoperative serum creatinine (SCR) and the changes in the patients with blood pressure (SBP) and the changes after taking antihypertensive drugs were observed and analyzed...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202738/longterm-outcomes-of-renal-artery-involvement-in-takayasu-arteritis
#3
Seokchan Hong, Byeongzu Ghang, Yong-Gil Kim, Chang-Keun Lee, Bin Yoo
OBJECTIVE: Takayasu arteritis (TA) involving the renal artery can result in hypertension (HTN), renal dysfunction, and premature death. The aim of this study was to investigate the longterm outcomes and factors that predict outcomes in patients with TA with renal artery stenosis. METHODS: The medical records of patients diagnosed with TA between January 1997 and December 2014 were reviewed retrospectively. Renal artery involvement was based on computed tomography and/or angiography findings...
February 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28190859/renal-artery-stenosis-following-nilotinib-administration-in-a-patient-with-chronic-myelogenous-leukemia
#4
Mayumi Hatsuse, Yuka Daikoku, Yuta Tamoto, Masahiro Uehara, Takashi Kitani, Keiichi Tamagaki, Shin-Ichi Fuchida, Akira Okano, Satoshi Murakami, Chihiro Shimazaki
A 63-year-old male was diagnosed as having chronic phase CML in 2001. He obtained a major molecular response with imatinib (IM). In 2012, amulodipin was started for hypertension. In January 2013, IM was switched to nilotinib (NIL) in a clinical trial, and in February 2015, NIL was discontinued because MR(4.5) had been maintained for two years. One month later, he was admitted to our hospital because of headache and high blood pressure (194/108 mmHg). His urine test showed protein 3+ and occult blood 2+. His eGFR rapidly deteriorated from 45...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28151862/a-lower-baseline-glomerular-filtration-rate-predicts-high-mortality-and-newly-cerebrovascular-accidents-in-acute-ischemic-stroke-patients
#5
Kai Dong, Xiaoqin Huang, Qian Zhang, Zhipeng Yu, Jianping Ding, Haiqing Song
Chronic kidney disease (CKD) is gradually recognized as an independent risk factor for cardiovascular and cardio-/cerebrovascular disease. This study aimed to examine the association of the estimated glomerular filtration rate (eGFR) and clinical outcomes at 3 months after the onset of ischemic stroke in a hospitalized Chinese population.Totally, 972 patients with acute ischemic stroke were enrolled into this study. Modified of Diet in Renal Disease (MDRD) equations were used to calculate eGFR and define CKD...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28150134/renal-artery-stenosis-in-patients-with-resistant-hypertension-stent-it-or-not
#6
REVIEW
Patricia Van der Niepen, Patrick Rossignol, Jean-Philippe Lengelé, Elena Berra, Pantelis Sarafidis, Alexandre Persu
After three large neutral trials in which renal artery revascularization failed to reduce cardiovascular and renal morbidity and mortality, renal artery stenting became a therapeutic taboo. However, this is probably unjustified as these trials have important limitations and excluded patients most likely to benefit from revascularization. In particular, patients with severe hypertension were often excluded and resistant hypertension was either poorly described or not conform to the current definition. Effective pharmacological combination treatment can control blood pressure in most patients with renovascular hypertension...
January 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28141679/abdominal-arterial-anomalies-in-children-with-alagille-syndrome-surgical-aspects-and-outcomes-of-liver-transplantation
#7
Jules Kohaut, Romain Pommier, Florent Guerin, Danièle Pariente, Emmanuel Jacquemin, Hélène Martelli, Sophie Branchereau
OBJECTIVES: Angiogenic defects secondary to gene mutations of JAG1 and NOTCH2, causing arterial anomalies in Alagille syndrome (AGS), are well described in the literature. The study analyzes the frequency of abdominal arterial anomalies in children with AGS with an emphasis on outcomes following liver transplantation (LT). METHODS: Between 1988 and 2013, 242 children with AGS were treated at our institution. We performed a retrospective analysis of 55 who underwent LT during the study period...
January 28, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28132685/comparison-of-frequency-of-ischemic-cardiovascular-events-in-patients-with-aortic-stenosis-with-versus-without-asymmetric-septal-hypertrophy-from-the-seas-trial
#8
Eigir Einarsen, Dana Cramariuc, Mai T Lønnebakken, Kurt Boman, Christa Gohlke-Bärwolf, John B Chambers, Eva Gerdts
Asymmetric interventricular septum hypertrophy (ASH) has been associated with increased perioperative morbidity and mortality in patients with severe, symptomatic aortic valve stenosis (AS). Less is known about the prognostic impact of ASH during progression of AS. Clinical, echocardiographic, and outcome data from 1,691 patients with initially asymptomatic, mostly moderate AS, participating in the Simvastatin Ezetimibe in Aortic Stenosis (SEAS) study was used. ASH was considered present if interventricular septum/posterior wall thickness ratio in end-diastole ≥1...
January 6, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28122855/descendo-bifemoral-bypass-grafting-and-renal-artery-revascularization-to-treat-complex-obliterative-arteriopathy
#9
Stoyan Kondov, Bartosz Rylski, Fabian Alexander Kari, Rika Wobser, Simon Leschka, Matthias Siepe, Friedhelm Beyersdorf, Martin Czerny
OBJECTIVES: Our goal was to describe a new standardized approach in patients with extensive obliterative arteriopathy aimed at distal revascularization and surgical kidney recruitment via descendo-bifemoral bypass grafting and renal artery revascularization. METHODS: Three patients with Leriche's syndrome and either a compromised single kidney or unilateral significant renal artery stenosis were treated with a standardized surgical approach, restoration of distal perfusion via descendo-bifemoral bypass with synchronous (n = 2) left-sided renal artery revascularization or metachronous (n = 1) right-sided renal artery revascularization...
January 25, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28101450/hyponatremic-hypertensive-syndrome-a-retrospective-cohort-study
#10
Devdeep Mukherjee, Rajiv Sinha, Md Shakil Akhtar, Agni Sekhar Saha
AIM: To ascertain the frequency of hyponatremic hypertensive syndrome (HHS) in a cohort of children with hypertensive emergency in a tertiary pediatric hospital. METHODS: A retrospective review was undertaken among children with hypertensive emergency admitted in our tertiary children hospital between June 2014 and December 2015 with an aim to identify any children with HHS. Three children with HHS were identified during this period. RESULTS: The 3 patients with HHS presented with hypertensive emergency...
January 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28100159/interventional-therapy-for-transplant-renal-artery-stenosis-is-safe-and-effective-in-preserving-allograft-function-and-improving-hypertension
#11
Lili Wang, Bin Liu, Jieke Yan, Yongzheng Wang, Wujie Wang, Wei Wang, Haiyang Chang, Hongwei Wang, Changjun Wang, Zheng Li, Yuliang Li
PURPOSE: To evaluate the outcomes of percutaneous intervention (PI) for transplant renal artery stenosis (TRAS). MATERIALS AND METHODS: Doppler ultrasonography was used as the screening tool, and angiography was the diagnostic method for TRAS. The indications for PI were (1) a reduction in lumen diameter of >50% or (2) a mean pressure gradient of >15 mm Hg. Technical success was assessed immediately after the procedure. The short-term results of stenosis were evaluated by serum creatinine (Scr) levels and blood pressure (BP)...
January 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28099225/the-performance-of-noncontrast-magnetic-resonance-angiography-in-detecting-renal-artery-stenosis-as-compared-with-contrast-enhanced-magnetic-resonance-angiography-using-conventional-angiography-as-a-reference
#12
Keng-Wei Liang, Jhih-Wei Chen, Hsin-Hui Huang, Chun-Hung Su, Yeu-Sheng Tyan, Teng-Fu Tsao
OBJECTIVE: The aims of this study were to evaluate the performance of noncontrast magnetic resonance angiography (NC MRA) for detecting renal artery stenosis (RAS) as compared with contrast-enhanced magnetic resonance angiography (CE MRA) and to evaluate the clinical feasibility, technical success rate, and performance of NC MRA for detecting RAS as compared with CE MRA. METHODS: Thirty-six subjects who underwent NC MRA and/or CE MRA were enrolled. Feasibility, technical success rate, and image quality scores were compared...
January 18, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28088437/safety-and-feasibility-of-pci-in-patients-undergoing-tavr-a-systematic-review-and-meta-analysis
#13
REVIEW
Anurag Bajaj, Samir Pancholy, Arjinder Sethi, Parul Rathor
We aimed to evaluate the safety and feasibility of PCI (percutaneous coronary intervention) for coronary artery disease (CAD) in patients undergoing transcatheter aortic valve replacement (TAVR) by performing a meta-analysis. A systemic search of the database was performed. Studies were included comparing TAVR versus TAVR with PCI for significant CAD in patients undergoing TAVR for severe aortic stenosis. The primary outcome was 30 day mortality and secondary outcomes were myocardial infarction, stroke, life threatening bleeding, major access site vascular complications and renal failure...
January 11, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#14
Sayf Al-Katib, Monisha Shetty, Syed Mohammad A Jafri, Syed Zafar H Jafri
A wide range of clinically important anatomic variants and pathologic conditions may affect the renal vasculature, and radiologists have a pivotal role in the diagnosis and management of these processes. Because many of these entities may not be suspected clinically, renal artery and vein assessment is an essential application of all imaging modalities. An understanding of the normal vascular anatomy is essential for recognizing clinically important anatomic variants. An understanding of the protocols used to optimize imaging modalities also is necessary...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28060190/pathophysiological-differences-between-multifocal-fibromuscular-dysplasia-and-atherosclerotic-renal-artery-stenosis
#15
Daan J L van Twist, Alfons J H M Houben, Michiel W de Haan, Peter W de Leeuw, Abraham A Kroon
BACKGROUND: Fibromuscular dysplasia (FMD) and atherosclerotic renal artery stenosis (ARAS) are the most common causes of renovascular hypertension. So far, FMD is believed to cause hypertension via similar mechanisms as in ARAS, that is, a decrease in renal blood flow, which subsequently leads to increased renin secretion. However, given the differences in the blood pressure (BP)-lowering effect of revascularization between patients with ARAS and FMD, we questioned whether this is true...
January 5, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28058211/organ-transplantation-and-drug-eluting-stents-perioperative-challenges
#16
REVIEW
Aparna Dalal
Patients listed for organ transplant frequently have severe coronary artery disease (CAD), which may be treated with drug eluting stents (DES). Everolimus and zotarolimus eluting stents are commonly used. Newer generation biolimus and novolimus eluting biodegradable stents are becoming increasingly popular. Patients undergoing transplant surgery soon after the placement of DES are at increased risk of stent thrombosis (ST) in the perioperative period. Dual antiplatelet therapy (DAPT) with aspirin and a P2Y12 inhibitor such as clopidogrel, prasugrel and ticagrelor is instated post stenting to decrease the incident of ST...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28051019/hemodynamics-in-transplant-renal-artery-stenosis-and-its-alteration-after-stent-implantation-based-on-a-patient-specific-computational-fluid-dynamics-model
#17
Hong-Yang Wang, Long-Shan Liu, Hai-Ming Cao, Jun Li, Rong-Hai Deng, Qian Fu, Huan-Xi Zhang, Ji-Guang Fei, Chang-Xi Wang
BACKGROUND: Accumulating studies on computational fluid dynamics (CFD) support the involvement of hemodynamic factors in artery stenosis. Based on a patient-specific CFD model, the present study aimed to investigate the hemodynamic characteristics of transplant renal artery stenosis (TRAS) and its alteration after stent treatment. METHODS: Computed tomography angiography (CTA) data of kidney transplant recipients in a single transplant center from April 2013 to November 2014 were reviewed...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28045673/orbital-atherectomy-in-the-renal-artery-a-new-frontier-for-an-emerging-technology
#18
Javier A Valle, Ehrin J Armstrong, Stephen W Waldo
Orbital atherectomy has been developed as a method to modify calcified plaque in the peripheral vasculature, with extensive experience and data supporting its use in infrainguinal peripheral arterial disease. However, calcific atherosclerotic disease occurs in other vascular beds and may benefit from the application of this technology. In this case report, we describe the first reported use of orbital atherectomy in a renal artery. A 55-year-old male with severe drug-refractory hypertension was found to have renal artery stenosis, with severe calcification of the right renal artery...
January 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28044987/drug-eluting-stents-versus-bare-metal-stents-for-the-prevention-of-restenosis-in-patients-with-renovascular-disease
#19
Christian Bradaric, Kristin Eser, Stephanie Preuss, Michael Dommasch, Isabell Wustrow, Nicolas Langwieser, Bernhard Haller, Ilka Ott, Massimiliano Fusaro, Uwe Heemann, Karl-Ludwig Laugwitz, Adnan Kastrati, Tareq Ibrahim
AIMS: To assess the impact of drug-eluting stents (DES) compared to bare-metal stents (BMS) for the endovascular treatment of atherosclerotic renal artery stenosis (ARAS). METHODS AND RESULTS: We retrospectively evaluated all of our endovascular BMS- and DES-implantations performed in de- novo ARAS between 2000-2014 at our institution. The occurrence of in-stent restenosis (ISR) detected by ultrasound or angiography, kidney function, blood pressure (BP), and the number of antihypertensive drugs were analyzed as endpoints...
January 3, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28044984/serial-quantitative-magnetic-resonance-angiography-follow-up-of-renal-artery-dimensions-following-treatment-by-four-different-renal-denervation-systems
#20
Laurens van Zandvoort, Matthijs van Kranenburg, Antonios Karanasos, Nicolas Van Mieghem, Mohammed Ouhlous, Robert-Jan van Geuns, Ron van Domburg, Joost Daemen
AIMS: Renal sympathetic denervation (RDN) is being studied as a therapeutic option for patients with therapy resistant hypertension. It remains unclear if the procedure affects the renal arteries in such a way that luminal narrowing might occur at the mid- to longer-term. METHODS AND RESULTS: In a prospective cohort of 27 patients referred for RDN, quantitative magnetic resonance angiography (MRA) was used to assess 52 vessels at baseline, 6-, and 12 months post treatment with one out of four different devices...
January 3, 2017: EuroIntervention
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