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Renal artery stenosis and ultrasound

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https://www.readbyqxmd.com/read/29395639/safety-and-feasibility-of-carotid-artery-stenting-with-dual-echo-technique-to-minimize-iodinated-contrast-dose
#1
Masakazu Okawa, Toshio Higashi, Kenji Fukuda, Toshiyasu Ogata, Tsutomu Yoshioka, Tooru Inoue
BACKGROUND: The aim of this study was to evaluate the safety and feasibility of carotid artery stenting (CAS) employing dual-ultrasound technique and administering a minimal contrast agent in patients with renal insufficiency. METHODS: Between September 2009 and July 2013, 63 consecutive patients underwent CAS at our institution: dual-echo carotid artery stenting (DECAS) in 7 patients with renal insufficiency and standard carotid artery stenting (STCAS) in the remaining 56 patients...
January 25, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29390277/a-rare-case-report-of-bilateral-common-and-internal-iliac-arterial-fibromuscular-dysplasia-coexisted-dissection-aneurysm-and-stenosis
#2
Luyun Fan, Wenjun Ma, Huimin Zhang, Jun Cai
RATIONALE: Iliac arterial fibromuscular dysplasia (FMD) was rarely reported and its demographic, clinical, and imaging features have not been precisely described resulting in uncertain therapeutic methods. PATIENT CONCERNS: A 31-year-old man was referred because of 3-month-ago onset hypertension, low serum potassium, and a small-sized right kidney with normal renal artery under ultrasound examination. This patient was suspected of primary aldosteronism, whereas spirolactone was poorly effective...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29304872/varicocele-due-to-renal-arteriovenous-malformation-mimicking-a-renal-tumor-a-case-report
#3
Peng-Chao Li, Jia-Yi Zhang, Yan-Yan Xiu, Sheng Liu, Jin-Guo Xia, Hai-Bin Shi, Ning-Hong Song
BACKGROUND: Renal arteriovenous malformation is an aberrant vascular connection between the renal artery and vein. Acquired renal arteriovenous malformation (arteriovenous fistulae) accounts for approximately 70% of renal arteriovenous abnormalities. Congenital renal arteriovenous malformation, relatively rare, can result in significant hematuria which may require arterial embolization or nephrectomy. CASE PRESENTATION: A 64-year-old Asian man presented to the Urology department in our hospital with gradual left scrotal swelling for 2 years...
January 5, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29196091/minimally-invasive-percutaneous-transluminal-renal-artery-stenting
#4
Ken Kongoji, Takanobu Mitarai, Mizuho Kasahara, Hiroshi Yamazaki, Yuki Ishibashi, Kohei Koyama, Kihei Yoneyama, Yasuhiro Tanabe, Yoshihiro J Akashi, Hideaki Yoshino
BACKGROUND: Minimally invasive percutaneous transluminal renal artery stenting (MIPTRS) is a method that prevents complications to the greatest extent possible. The present study aimed to investigate the safety and efficacy of MIPTRS performed in cases of renal artery stenosis with an estimated glomerular filtration rate (eGFR)≤45mL/min. METHODS: Cases of patients who underwent MIPTRS at our hospital between December 2010 and June 2015 in whom eGFR was ≤45mL/min were retrospectively analysed...
November 21, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29101991/acr-appropriateness-criteria%C3%A2-renovascular-hypertension
#5
Howard J Harvin, Nupur Verma, Paul Nikolaidis, Michael Hanley, Vikram S Dogra, Stanley Goldfarb, John L Gore, Stephen J Savage, Michael L Steigner, Richard Strax, Myles T Taffel, Jade J Wong-You-Cheong, Don C Yoo, Erick M Remer, Karin E Dill, Mark E Lockhart
Renovascular hypertension is the most common type of secondary hypertension and is estimated to have a prevalence between 0.5% and 5% of the general hypertensive population, and an even higher prevalence among patients with severe hypertension and end-stage renal disease, approaching 25% in elderly dialysis patients. Investigation for renal artery stenosis is appropriate when clinical presentation suggests secondary hypertension rather than primary hypertension, when there is not another known cause of secondary hypertension, and when intervention would be carried out if a significant renal artery stenosis were identified...
November 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28974566/cardiovascular-structure-and-function-in-children-with-middle-aortic-syndrome-and-renal-artery-stenosis
#6
Rawan K Rumman, Cameron Slorach, Wei Hui, Mina Matsuda-Abedini, Valerie Langlois, Seetha Radhakrishnan, Armando J Lorenzo, Joao Amaral, Luc Mertens, Rulan S Parekh
Middle aortic syndrome (MAS) is a narrowing of the abdominal aorta, often in conjunction with renal artery stenosis (RAS). Structure and function of the cardiovascular system are not well understood. In a prospective cross-sectional study, 35 children with MAS or RAS or both (MAS/RAS) were compared with 140 age-, sex-, and body surface area-matched healthy children. Vascular assessment included carotid intima-media thickness and carotid distensibility using B-mode ultrasound and central and peripheral pulse wave velocities using applanation tonometry...
October 3, 2017: Hypertension
https://www.readbyqxmd.com/read/28885208/the-diagnostic-value-of-contrast-enhanced-ultrasound-ceus-as-a-new-technique-for-imaging-of-vascular-complications-in-renal-transplants-compared-to-standard-imaging-modalities
#7
K Mueller-Peltzer, J Rübenthaler, M Fischereder, M Reiser, D-A Clevert
BACKGROUND: Vascular complications in renal transplant patients are a well-known issue in post transplant patient care. If malfunctioning of the renal transplant is suspected to be caused by vascular complications an early diagnosis and therapy is required to maintain the renal transplant. Computed tomography (CT), digital substraction angiography (DSA) and radioisotope renography are the gold standard imaging modalities to diagnose vascular complications. OBJECTIVE: To analyse the sensitivity and specificity of contrast-enhanced ultrasound (CEUS) in comparison to the standard imaging modalities CT, DSA and radioisotope renography in the diagnosis of vascular complications in renal transplant patients...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28865484/renal-ultrasound-provides-low-utility-in-evaluating-cardiac-surgery-associated-acute-kidney-injury
#8
Allen Young, Todd Crawford, Alejandro Suarez Pierre, J Trent Magruder, Charles Fraser, John Conte, Glenn Whitman, Christopher Sciortino
BACKGROUND: Renal ultrasonography is part of the algorithm in assessing acute kidney injury (AKI). The purpose of this study was to assess the clinical utility of renal US in postoperative cardiac patients who develop AKI. METHODS: We conducted a retrospective study of 90 postoperative cardiac surgery patients at a single institution from 1/19/2010 to 3/19/2016 who underwent renal US for AKI. We reviewed provider documentation to determine whether renal US changed management...
September 2, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28858538/screening-for-transplant-renal-artery-stenosis-ultrasound-based-stenosis-probability-stratification
#9
Ghaneh Fananapazir, John P McGahan, Michael T Corwin, Susan L Stewart, Catherine T Vu, Luke Wright, Christoph Troppmann
OBJECTIVE: The objective of our study was to evaluate which spectral Doppler ultrasound parameters are useful in patients with clinical concern for transplant renal artery stenosis (TRAS) and create mathematically derived prediction models that are based on these parameters. MATERIALS AND METHODS: The study subjects included 120 patients with clinical signs of renal dysfunction who had undergone ultrasound followed by angiography (either digital subtraction angiography or MR angiography) between January 2005 and December 2015...
November 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28836554/outcomes-of-chimney-and-or-periscope-techniques-in-the-endovascular-management-of-complex-aortic-pathologies
#10
Zhi-Yuan Wu, Zuo-Guan Chen, Li Ma, Yong-Peng Diao, Yue-Xin Chen, Chang-Wei Liu, Yue-Hong Zheng, Bao Liu, Yong-Jun Li
BACKGROUND: The chimney/periscope technique has been used to address complex aortic pathologies. This study aimed to report the outcomes and experiences of chimney and/or periscope grafts (CPGs) used in the endovascular management of complex aortic pathologies. METHODS: Twenty-two patients with complex aortic pathologies were retrospectively studied from January 2013 to August 2016 in two vascular centers of teaching hospitals. All patients were diagnosed using computed tomography angiography (CTA)...
September 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28803687/predictors-of-asymptomatic-radiation-induced-abdominal-atherosclerosis
#11
L Cella, R Liuzzi, P Romanelli, M Conson, V D'Avino, M Ottaviano, V Damiano, G Palmieri, R Pacelli, M Mancini
AIMS: To identify predictors of asymptomatic radiation-induced abdominal atherosclerosis in patients treated with radiotherapy and evaluated by abdominal vascular ultrasonography. MATERIALS AND METHODS: Forty-two testicular classic seminoma patients (median age 34 years, range 16-56) undergoing radical inguinal orchiectomy were analysed. Twenty-six patients underwent post-surgery radiotherapy (median total dose 25 Gy, range 25-43), two of them also received chemotherapy (CHT) and 16 patients were treated with surgery alone or by surgery followed by CHT (control group)...
November 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28793000/intermittent-claudication-and-severe-renal-artery-stenosis-are-independently-associated-in-hypertensive-patients-referred-for-renal-arteriography
#12
Thiago Andrade Macedo, Luciano Ferreira Drager, Rodrigo Pinto Pedrosa, Henrique Cotchi Simbo Muela, Valeria Costa-Hong, Luiz Junia Kajita, Luiz Aparecido Bortolotto
OBJECTIVE: The purpose of this study was to evaluate the association between the presence of clinical symptoms of peripheral artery disease and severe renal artery stenosis in patients referred for renal angiography. METHOD: We included 82 patients with clinical suspicion of renovascular hypertension and performed an imaging investigation (renal Doppler ultrasound and/or renal scintigraphy) for possible renal artery stenosis. All patients underwent renal arteriography and were examined for peripheral artery disease based on the presence of intermittent claudication and ankle-brachial index test results...
July 2017: Clinics
https://www.readbyqxmd.com/read/28690297/successful-complete-revascularization-with-pci-using-super-low-volume-of-contrast-medium-in-a-patient-with-three-vessel-disease-including-2-chronic-total-occlusions-with-severe-renal-dysfunction
#13
Masahiro Koide, Masayuki Kato, Kimihito Usui, Kayoko Mera, Yoshinori Tsubakimoto, Koji Isodono, Tomohiko Sakatani, Akiko Matsuo, Keiji Inoue, Hiroshi Fujita
The most important factor for preventing contrast-induced nephropathy (CIN) during percutaneous coronary intervention (PCI) in patients with severe renal dysfunction is to minimize the contrast volume. Herein, we report a successful case of complete revascularization after 3 separate PCI procedures using a super-low volume of contrast medium in a patient with 3-vessel disease, including two chronic total occlusions (CTOs). A 70-year-old man having exertional angina despite maximal medical therapy was referred to our hospital...
August 3, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28688242/abnormal-renal-parenchyma-accumulation-of-123-i-mibg-in-a-child-with-renal-artery-stenosis
#14
Randy Yeh, Ahmed Mohammed, Aleksandr Margolin, Peter Schlossberg, Rama S Ayyala
Hypertension is rare in the pediatric population, however renal artery stenosis (RAS) is an important cause that can be difficult to diagnose. Doppler ultrasound is the first line imaging modality, with computed tomography and magnetic resonance imaging as adjunct modalities, all with variable sensitivity for RAS. The gold standard for evaluation of RAS is invasive selective catheter angiography. We present a unique multimodality case of abnormal radiotracer uptake in the renal parenchyma on 123-Iodine metaiodobenzylguanidine ((123)I MIBG) scan in a patient with unilateral RAS...
July 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28681070/-imaging-of-visceral-vessels
#15
REVIEW
C Stelzner, N Abolmaali, U Hecker, S Schellong
Visceral vessel processes are primarily or secondarily included in a multitude of clinical abdominal symptoms, with which the specialist in internal medicine is confronted. The spectrum ranges from more sharply outlined manifestations, such as chronic ischemic bowel disease up to dysfunctional disturbances of blood pressure regulation, such as high-grade renal artery stenosis. Sometimes diseases with prognostic implications, such as arterial aneurysms, are revealed as incidental findings. As a rule the B‑mode and duplex ultrasound can often be complemented by computed tomography (CT) and magnetic resonance imaging (MRI), as in aneurysms or portal vein thrombosis or the indications for subsequent digital subtraction angiography (DSA) and catheter-based therapy can be directly obtained from duplex and Doppler ultrasound...
August 2017: Der Internist
https://www.readbyqxmd.com/read/28648650/planning-execution-and-follow-up-for-endovascular-aortic-aneurysm-repair-using-a-highly-restrictive-iodinated-contrast-protocol-in-patients-with-severe-renal-disease
#16
Enrico Gallitto, Gianluca Faggioli, Mauro Gargiulo, Antonio Freyrie, Rodolfo Pini, Chiara Mascoli, Stefano Ancetti, Vincenzo Vento, Andrea Stella
BACKGROUND: The cumulative amount of iodinated contrast medium necessary for endovascular repair (EVAR) planning, operative procedure, and subsequent follow-up is a threat for the onset of end-stage renal disease in patients with preoperative impaired kidney function. The purpose of this study was to describe a mini-invasive approach aimed to minimize the exposure of these patients to iodinated contrast medium and the subsequent risk of renal function worsening. METHODS: From 2012 to 2015, all patients with abdominal aortic aneurysm (AAA) at high surgical risk and fit for standard EVAR (simple aortic-iliac anatomy: proximal and distal neck length ≥15 mm, no severe angulation), underwent EVAR through the following "near-zero contrast" approach, if their glomerular filtration rate (GFR) was <30 mL/min: preoperative planning was performed by noncontrast-enhanced computed tomography and duplex ultrasound (DU); the origin of renal/hypogastric arteries and aortic bifurcation was evaluated and matched with vertebral bone landmarks and the endograft deployed accordingly, using <20 cc of isotonic iodinate contrast medium and contrast-enhancement DU (CEUS)...
June 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28583646/transplant-renal-artery-stenosis-evaluation-with-contrast-enhanced-ultrasound
#17
Fu-Shun Pan, Ming Liu, Jia Luo, Wen-Shuo Tian, Jin-Yu Liang, Ming Xu, Yan-Ling Zheng, Xiao-Yan Xie
OBJECTIVE: To assess the efficacy of contrast-enhanced ultrasound (CEUS) in depicting transplant renal artery stenosis (TRAS). MATERIALS AND METHODS: Seventy-eight patients (56 men and 22 women; aged 36±12.2years) who were suspected of TRAS due to either Doppler ultrasound (DUS) abnormalities or difficult control of blood pressure and/or persistent deterioration of renal function were enrolled to perform CEUS. The reference standard for the TRAS diagnoses was computed tomography angiography (CTA)...
May 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28441700/ultrasound-based-renal-sympathetic-denervation-for-the-treatment-of-therapy-resistant-hypertension-a-single-center-experience
#18
Karl Fengler, Robert Höllriegel, Thomas Okon, Thomas Stiermaier, Karl-Philipp Rommel, Stephan Blazek, Christian Besler, Max von Roeder, Martin Petzold, Gerhard Schuler, Philipp Lurz
INTRODUCTION: The effectiveness of renal sympathetic denervation (RDN) as a treatment for therapy-resistant hypertension has been doubted as the Simplicity-HTN-3 trial was unable to show any treatment benefit over sham procedure. This might partly be explained by a high procedural variability in treatment with radiofrequency-based catheters. Recently, newer systems for RDN, like ultrasound-based devices, have been introduced into practice. To date however, data on their effectiveness for the treatment of resistant hypertension are scarce...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28361119/evaluation-of-carotid-ultrasonography-screening-among-kidney-transplant-candidates-a-single-center-retrospective-study
#19
Chad W Rossitter, Ronald B Vigo, Ahmed Osama Gaber, Joshua T Swan, Wadi N Suki
BACKGROUND: Kidney transplant candidates undergo rigorous testing prior to clearance for transplantation. Because kidney transplant candidates may be at increased risk for carotid artery stenosis because of arteriosclerosis and atherosclerosis secondary to hypertension, vascular calcification, and diabetes, carotid ultrasound is often performed with the intent of preventing a cerebrovascular accident in the perioperative or posttransplant period. To our knowledge, there has not been a study investigating the utility of screening carotid ultrasonography in pretransplant candidates...
March 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28290908/-coronary-angioplasty-and-stenting-in-patients-older-than-80-years-immediate-and-long-term-results
#20
A M Babunashvili, D P Dundua, D S Kartashov, A A Bazarnova, A Yu Korenevich, M E Vetluzhskikh
AIM: to assess immediate and long-term results of coronary angioplasty and stenting in patients older than 80 years - a high risk group in view of the severity of concomitant pathology and extent of coronary atherosclerosis. MATERIAL AND METHODS: We conducted retrospective analysis of data from 167 patients older than 80 years (mean age 81.43+/-2.14 years) subjected to percutaneous coronary intervention from 2006 to 2013 (3.2% from total number of patients). Multivessel involvement was present in 128 patients (76...
July 2016: Kardiologiia
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