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Renal artery stenosis and ultrasound

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https://www.readbyqxmd.com/read/28044987/drug-eluting-stents-versus-bare-metal-stents-for-the-prevention-of-restenosis-in-patients-with-renovascular-disease
#1
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/27986479/prospective-nonrandomized-study-to-evaluate-endovascular-repair-of-pararenal-and-thoracoabdominal-aortic-aneurysms-using-fenestrated-branched-endografts-based-on-supraceliac-sealing-zones
#2
Gustavo S Oderich, Mauricio Ribeiro, Jan Hofer, Jean Wigham, Stephen Cha, Julia Chini, Thanila A Macedo, Peter Gloviczki
PURPOSE: To investigate outcomes of manufactured fenestrated and branched endovascular aortic repair (F-BEVAR) endografts based on supraceliac sealing zones to treat pararenal aortic aneurysms and thoracoabdominal aortic aneurysms (TAAAs). METHODS: A total of 127 patients (91 male, mean age 75 ± 10 years old) were enrolled in a prospective, nonrandomized single-center study using manufactured F-BEVAR (November 2013-March 2015). Stent design was based on supraceliac sealing zone in all patients with ≥ four vessels in 111 (89%)...
December 13, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27966109/renal-ultrasound-and-doppler-sonography-in-hypertension-an-update
#3
Maria Boddi
Ultrasound (US) allows the non-invasive evaluation of morphological changes of kidney structure (by means of B-Mode) and patterns of renal and extrarenal vascularization (by means of color-Doppler and contrast-enhanced US). In hypertensive subjects it offers a relevant contribution to the diagnosis of early renal damage, acute or chronic nephropathies and nephrovascular disease. However, morphological changes are often detected late and non-specific and in recent years evidence has increased regarding the clinical relevance of renal resistive index (RRI) for the study of vascular and renal parenchymal renal abnormalities...
December 14, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27965957/22q11-deletion-syndrome-and-urogenital-manifestations-a-clinicopathological-case-report
#4
M Vachette, G E Grant, J Bouquet de la Joliniere, M Jotterand, N Ben Ali, A Feki, R Capoccia Brugger
BACKGROUND: Deletion in the chromosomal region 22q11 results from the abnormal development of the third and fourth pharyngeal pouches during embryonic life and presents an expansive phenotype with more than 180 clinical features described that involve every organ and system. HISTORY AND SIGNS: A 23-year-old African woman presented for the first trimester echography, which revealed an isolated anechoic structure suggesting a ureteral dilatation. The suspicion of a malposition of great arteries in the second trimester indicated an amniocentesis leading to a diagnosis of 22q11 deletion...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27895243/contrast-less-stent-placement-for-vertebral-artery-origin-stenosis
#5
Shinzo Ota, Yoshinobu Sekihara, Takahiro Himeno, Yasue Tanaka, Tatsuya Ohtonari
We performed stent placement under intravascular ultrasound (IVUS), without the use of contrast medium, in a male patient in his 70s who had vertebral artery origin stenosis and decreased renal function. Satisfactory dilatation was achieved without complications, and the patient remained asymptomatic at 2 years of follow-up. We now report the details of this procedure. Stent placement under IVUS guidance may be useful in patients in whom contrast medium is contraindicated.
November 28, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27873231/atherosclerotic-renal-artery-stenosis
#6
Robert Schoepe, Stephen McQuillan, Debbie Valsan, Geoffrey Teehan
Atherosclerotic Renal Artery Stenosis is a form or peripheral arterial disease that tends to affect older subjects with hyperlipidemia, history of tobacco use, and who have other coexistent forms of vascular insufficiency. An abdominal bruit on physical exam can be a helpful clue. Slowly progressive, it can lead to critical narrowing of the renal arteries which creates a cascade of events such as renin-angiotensin-aldosterone activation (RAAS), hypertension, acute pulmonary edema, and renal fibrosis. The hypertension is considered a secondary form and can even be resistant to multiple antihypertensives...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27754194/br-05-2-angioplasty-of-atherosclerotic-renal-artery-stenosis-who-benefits
#7
Donghoon Choi
: Atherosclerotic renal artery stenosis is an increasingly recognized medical problem especially in elderly patients. It commonly occurs with systemic manifestations including hypertension (HTN), chronic kidney disease (CKD) or atherosclerotic diseases including coronary or peripheral artery disease. Significant renal artery stenosis may result in HTN, ischemic nephropathy, however it is still in debate about the benefit of revascularization. Although several randomized controlled trials including Angioplasty and Stenting for Renal Artery Lesions (ASTRAL) and Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) study has failed to reveal a significant benefit of angioplasty, angioplasty with medical therapy is increasingly accepted in some patients with certain clinical conditions...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27747454/non-invasive-imaging-cannot-replace-formal-angiography-in-the-diagnosis-of-renovascular-hypertension
#8
Agnes Trautmann, Derek J Roebuck, Clare A McLaren, Eileen Brennan, Stephen D Marks, Kjell Tullus
OBJECTIVES: Renovascular disease (RVD) is found in about 10 % of secondary childhood hypertension. Digital subtraction angiography (DSA) is the gold standard to diagnose RVD. Non-invasive imaging methods like Doppler ultrasound (US), magnetic resonance angiography (MRA), and computed tomography angiography (CTA) are increasingly used. Our aim was to evaluate the role and accuracy of US, MRA, and CTA compared to DSA in diagnosing RVD in children. PATIENTS AND METHODS: A retrospective review of 127 children with suspected renovascular hypertension was performed in children referred to Great Ormond Street Hospital between 2006 and 2014 due to clinical suspicion of renovascular hypertension and/or findings on US and/or MRA or CTA...
October 17, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27643151/br-05-2-angioplasty-of-atherosclerotic-renal-artery-stenosis-who-benefits
#9
Donghoon Choi
UNLABELLED: Atherosclerotic renal artery stenosis is an increasingly recognized medical problem especially in elderly patients. It commonly occurs with systemic manifestations including hypertension (HTN), chronic kidney disease (CKD) or atherosclerotic diseases including coronary or peripheral artery disease. Significant renal artery stenosis may result in HTN, ischemic nephropathy, however it is still in debate about the benefit of revascularization. Although several randomized controlled trials including Angioplasty and Stenting for Renal Artery Lesions (ASTRAL) and Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) study has failed to reveal a significant benefit of angioplasty, angioplasty with medical therapy is increasingly accepted in some patients with certain clinical conditions...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27613386/effects-of-intravenous-bolus-injection-of-nicorandil-on-renal-artery-flow-velocity-assessed-by-color-doppler-ultrasound
#10
Yukiko Shimamoto, Takashi Kubo, Kazumi Tanabe, Hiroki Emori, Yosuke Katayama, Tsuyoshi Nishiguchi, Akira Taruya, Takeyoshi Kameyama, Makoto Orii, Takashi Yamano, Akio Kuroi, Tomoyuki Yamaguchi, Kazushi Takemoto, Yoshiki Matsuo, Yasushi Ino, Atsushi Tanaka, Takeshi Hozumi, Masaki Terada, Takashi Akasaka
BACKGROUND: Previous animal studies have shown that a potassium channel opener, nicorandil, provokes vasodilation in renal microvasculature and increases renal blood flow. We conducted a clinical study that aimed to evaluate the effect of nicorandil on renal artery blood flow in comparison with nitroglycerin by using color Doppler ultrasound. METHODS: The present study enrolled 40 patients with stable coronary artery disease who had no renal arterial stenosis and renal parenchymal disease...
January 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/27504713/comparison-of-ferumoxytol-enhanced-mra-with-conventional-angiography-for-assessment-of-severity-of-transplant-renal-artery-stenosis
#11
Ghaneh Fananapazir, Mustafa R Bashir, Michael T Corwin, Ramit Lamba, Catherine T Vu, Christoph Troppmann
PURPOSE: To determine the accuracy of ferumoxytol-enhanced magnetic resonance angiography (MRA) in assessing the severity of transplant renal artery stenosis (TRAS), using digital subtraction angiography (DSA) as the reference standard. MATERIALS AND METHODS: Our Institutional Review Board approved this retrospective, Health Insurance Portability and Accountability Act-compliant study. Thirty-three patients with documented clinical suspicion for TRAS (elevated serum creatinine, refractory hypertension, edema, and/or audible bruit) and/or concerning sonographic findings (elevated renal artery velocity and/or intraparenchymal parvus tardus waveforms) underwent a 1...
August 9, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27433226/renal-artery-stenosis-on-duplex-ultrasound-due-to-inferior-vena-cava-filter-leg-impingement
#12
Kathleen Hannon
We present a case study of renal artery duplex findings for new onset of hypertension in a young woman with a history of inferior vena cava filter placed a year prior and failed percutaneous retrieval. Duplex ultrasound showed significantly elevated velocities in the mid-right renal artery, consistent with renal artery stenosis. Computed tomography angiography images suggested that a leg from the inferior vena cava filter was impinging on her right renal artery, with perforation through the vena cava possibly into the wall of her duodenum...
November 2014: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/27409058/retrograde-transpedal-access-for-revascularization-of-below-the-knee-arteries-in-patients-with-critical-limb-ischemia-after-an-unsuccessful-antegrade-transfemoral-approach
#13
J P Goltz, M Planert, M Horn, M Wiedner, M Kleemann, J Barkhausen, E Stahlberg
PURPOSE: To evaluate the safety and technical and clinical success of endovascular below-the-knee (BTK) artery revascularization by a retrograde transpedal access. MATERIALS AND METHODS: We retrospectively identified 16/172 patients (9.3 %) with endovascular BTK revascularization in whom a transfemoral approach had failed and transpedal access had been attempted. The dorsal pedal (n = 13) or posterior tibial (n = 3) artery was accessed using a dedicated access set and ultrasound guidance...
October 2016: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/27339588/cortical-venous-infarcts-and-acute-limb-ischaemia-in-acute-carbon-monoxide-poisoning-a-rare-case-report
#14
Muhammad Farooq Hanif, Beenish Iqbal, Nooman Gilani
A case of carbon monoxide poisoning is presented with unusual complications; some of which have not been reported previously. A 48-years-old Asian male presented to the emergency department with dyspnoea, altered state of consciousness and pale discolouration of skin after being locked inside a factory room with burning coal. Patient was in acute respiratory distress. Arterial blood gas analysis showed respiratory acidosis with hypoxaemia. On 3rd day, patient developed dark coloured urine and right upper limb ischaemia...
June 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27219892/renal-artery-stenosis-are-there-patients-who-benefit-from-intervention
#15
M C Kihm, B Vogel, M Zeier, L P Kihm
Atherosclerotic renal artery stenosis (ARAS) is one of the most relevant long-term complications of atherosclerotic disease. It is associated both with hypertension and increased renal and cardiovascular risk and overall mortality. Diagnostic modalities include non-invasive duplex ultrasound, dynamic magnetic resonance angiography (MRA) and computer tomography angiography (CTA) and are confirmed by using invasive renal angiography. Percutaneous revascularization of renal artery stenosis has been studied in various clinical trials...
June 2016: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/27216744/multimodality-imaging-of-fibromuscular-dysplasia
#16
REVIEW
Sara Lewis, Daniella Kadian-Dodov, A Bansal, R A Lookstein
OBJECTIVE: Fibromuscular dysplasia (FMD) is an uncommon non-inflammatory and non-atherosclerotic cause of arterial disease that may result in stenosis, tortuosity, aneurysm, or dissection. The clinical presentation depends on the vascular bed involved and ranges from asymptomatic to multisystem disease and end organ ischemia. The purpose of this article is to review the role of imaging in patients with FMD with an emphasis on renal FMD. The relevant epidemiology, histopathology, imaging techniques, and interpretation of images will be discussed...
October 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27170344/clinical-scenarios-in-chronic-kidney-disease-vascular-chronic-diseases
#17
Mario Meola, Sara Samoni, Ilaria Petrucci
Vascular chronic diseases represent one of the leading causes of end-stage renal disease in incident dialysis patients. B-Mode ultrasound (US) and color Doppler (CD) have a high sensitivity and specificity in the diagnosis of vascular chronic diseases. US and CD should be used to identify subjects in the high risk population who are affected by main renal artery stenosis (RAS) and to identify and characterize patients without RAS who have chronic ischemic nephropathy caused by nephroangiosclerosis and/or atheroembolic disease...
2016: Contributions to Nephrology
https://www.readbyqxmd.com/read/27170301/imaging-in-chronic-kidney-disease
#18
Mario Meola, Sara Samoni, Ilaria Petrucci
Chronic kidney disease (CKD) diagnosis and staging are based on estimated or calculated glomerular filtration rate (GFR), urinalysis and kidney structure at renal imaging techniques. Ultrasound (US) has a key role in evaluating both morphological changes (by means of B-Mode) and patterns of vascularization (by means of color-Doppler and contrast-enhanced US), thus contributing to CKD diagnosis and to the follow-up of its progression. In CKD, conventional US allows measuring longitudinal diameter and cortical thickness and evaluating renal echogenicity and urinary tract status...
2016: Contributions to Nephrology
https://www.readbyqxmd.com/read/27162297/-renovascular-hypertension
#19
REVIEW
Joanna Matuszkiewicz-Rowińska, Monika Wieliczko
Renovascular hypertension (RVH) is one of the most common causes of secondary hypertension. In about 90% of cases it is due to atherosclerotic renal artery stenosis, often accompanied by severe occlusive disease in the other vessels, and as such carries a bad prognosis. In the remaining 10% patients (usually young women) the underlying vascular lesion is fibromuscular dysplasia. A presence of RVH should be suspected in patients with severe or resistant hypertension, sudden decline of renal function, sudden development or worsening of hypertension, flash pulmonary edema, impairment of renal function after treatment with renal-angiotensin-aldosterone system (RAAS) antagonists...
2015: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27118604/the-use-of-intrarenal-doppler-ultrasonography-as-predictor-for-positive-outcome-after-renal-artery-revascularization
#20
Jeroen Jwm Brouwers, Rob C van Wissen, Hugo Tc Veger, Joris I Rotmans, Bart Mertens, Michel Jt Visser
Whether patients with renal artery stenosis should undergo therapeutic revascularization is controversial. In this retrospective study, we evaluated prognostic intrarenal Doppler ultrasound parameters that might have a predictive value for a beneficial response after renal revascularization. From January 2003 until December 2012, all renovascular interventions for renal artery stenosis were analyzed. The resistive index and the maximal systolic acceleration were determined by Doppler ultrasonography prior to intervention...
April 26, 2016: Vascular
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