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renovascular hypertension

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https://www.readbyqxmd.com/read/28622281/effects-of-baicalin-on-blood-pressure-and-left-ventricular-remodeling-in-rats-with-renovascular-hypertension
#1
Hualei Dai, Xinjin Zhang, Zhigang Yang, Jianmei Li, Jialin Zheng
BACKGROUND This study aimed to explore the effect of baicalin, which is a kind of bioactive flavonoid, on blood pressure and left ventricular remodeling in rats with renovascular hypertension. MATERIAL AND METHODS A total of 40 male Wistar rats were randomly assigned into sham-operation (n=10) and renal hypertension model groups (2-kidney-1 clip; 2K-1C, n=30). The rats in the renal hypertension model group were randomly subdivided into 2K-1C (n=13) and 2K-1C/Baicalin groups (n=14). The cardiac function indexes were determined after 4 weeks...
June 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28621587/treatment-of-severe-hypertension-in-a-14-year-old-child-successful-blood-pressure-control-with-additive-administration-of-captopril-an-angiotensin-converting-enzyme-inhibitor-in-a-patient-with-bilateral-renovascular-hypertension
#2
Xin Zhang, Ying Xu, Xiaoping Chen, Si Wang, Xinran Li, Xin Yan
We report a 14-year-old boy with recurrent episodes of headache caused by uncontrolled hypertension. The diagnosis of renovascular hypertension due to Takaysu arteritis (TA) was made based on an increase in erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) and computed tomography (CT) image of bilateral renal artery stenosis was taken. Renal scintigraphy revealed normal perfusion and function of the right kidney and severe reduction of the perfusion and function of the left kidney. Careful drug adjustments significantly improved but did not fully control the blood pressure (BP); further, angioplasty, which showed almost occlusion of the left renal artery opening and the minor narrowing of the right renal artery, failed to regain sufficient BP control...
June 16, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28617154/two-kidney-one-clip-is-a-pertinent-approach-to-integrate-arterial-hypertension-in-animal-models-of-stroke-serial-magnetic-resonance-imaging-studies-of-brain-lesions-before-and-during-cerebral-ischemia
#3
Benjamin Ménard, Laurent Chazalviel, Simon Roussel, Myriam Bernaudin, Omar Touzani
Although chronic arterial hypertension (CAH) represents the major comorbid factor in stroke, it is rarely integrated in preclinical studies of stroke. The majority of those investigations employ spontaneously hypertensive rats (SHR) which display a susceptibility to ischemic damage independent of hypertension. Here, we used a renovascular model of hypertension (RH) to examine, with magnetic resonance imaging (MRI), brain alterations during the development of hypertension and after brain ischemia. We also examined whether MRI-derived parameters predict the extent of ischemia-induced brain damage...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28598043/clinical-profile-of-hypertensive-emergencies-in-an-intensive-care-unit
#4
Shubhangi V Dhadke, Vithal N Dhadke, Dhruv S Batra
AIMS AND OBJECTIVE: To study the prevalence of hypertensive emergencies in an ICU set up and to study the clinical presentation of hypertensive emergencies related to cardiovascular, neurological and renovascular system. METHODS: Type of Study: Cross-sectional, descriptive study. DURATION OF STUDY: Two years from 1st December 2011 till 30th November 2013. SAMPLE SIZE: 50 patients of hypertensive emergencies admitted to the intensive care unit of Dr...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28595205/the-relationship-between-serum-lipid-parameters-and-renal-frame-count-in-hypertensive-patients-with-normal-renal-functions
#5
Emrah İpek, Mustafa Yolcu, Erkan Yıldırım
OBJECTIVE: Atherosclerosis can contribute to renovascular disease, and high cholesterol level is an independent risk factor for disease progression. Renal frame count (RFC) is an objective angiographic method of measuring macrovascular blood flow in the main renal artery and its segmental branches. The aim of the present study was to demonstrate relationship between serum lipid parameters and RFC. METHODS: In this cross-sectional study, 116 hypertensive patients were allocated into 2 groups according to serum low-density lipoprotein (LDL) levels...
June 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28594847/kidney-volume-to-gfr-ratio-predicts-functional-improvement-after-revascularization-in-atheromatous-renal-artery-stenosis
#6
Constantina Chrysochou, Darren Green, James Ritchie, David L Buckley, Philip A Kalra
BACKGROUND: Randomized controlled trials (RCT) have shown no overall benefit of renal revascularization in atherosclerotic renovascular disease (ARVD). However, 25% of patients demonstrate improvement in renal function. We used the ratio of magnetic resonance parenchymal volume (PV) to isotopic single kidney glomerular filtration rate (isoSKGFR) ratio as our method to prospectively identify "improvers" before revascularization. METHODS: Patients with renal artery stenosis who were due revascularization were recruited alongside non-ARVD hypertensive CKD controls...
2017: PloS One
https://www.readbyqxmd.com/read/28594810/kidney-injury-secondary-to-endovascular-treatment-of-renal-artery-stenosis
#7
N Fatic, I Kuzmanovic, D Markovic, L Davidovic, M Vukovic, D Kostić
In this paper, we present a case of kidney injury as a complication of renal artery angioplasty in a 54-year-old female patient that suffered from resistant renovascular hypertension. This case emphasises the unpredictable nature of endovascular procedures, the need for careful post-procedure evaluation and the role of 'old fashioned' surgical techniques in resolving complications of endovascular procedures.
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28587402/establishment-and-evaluation-of-a-reversible-two-kidney-one-clip-renovascular-hypertensive-rat-model
#8
Li-Qiang Li, Jian Zhang, Rong Wang, Jian-Xin Li, Yong-Quan Gu
The aim of the present study was to establish and evaluate a novel and reversible two-kidney, one-clip renovascular hypertensive rat model with a titanium vascular clip. A total of 40 male Sprague-Dawley rats were evenly and randomly divided into a sham-operated group, and 3, 7, 12 and 28D groups (namely removing the vascular clip in the renovascular hypertensive model after 3, 7, 12 and 28 days, respectively). The systolic blood pressure (SBP) and plasma renin activity (PRA) were measured, and color duplex imaging was conducted before placing the clips, as well as before and after removing them...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28560752/selective-embolization-therapy-for-intrarenal-artery-stenosis-causing-renovascular-hypertension-efficacy-and-follow-up-renal-imaging
#9
Eikan Mishima, Takehiro Suzuki, Kazumasa Seiji, Yasutoshi Akiyama, Hideki Ota, Junichiro Hashimoto, Kei Takase, Takaaki Abe, Sadayoshi Ito
We report the case of a young woman treated with selective renal embolization for renovascular hypertension caused by intrarenal artery stenosis and show follow-up imaging of the treated kidney. An 18-year-old woman had renin-dependent hypertension with intrarenal artery stenosis caused by fibromuscular dysplasia. A middle branch artery was nearly occluded, resulting in segmental renal ischemia with excessive renin secretion. Because our angioplasty attempt for revascularization failed as a result of technical difficulty, we performed selective embolization of the diseased vessel by anhydrous ethanol...
May 30, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28554696/-hypertension-during-takayasu-s-disease-an-algerian-single-center-experience-of-279-patients
#10
A Mammeri, R Guermaz, A Hatri, F Kessal, S Taharboucht, F Hamrour, M Ammi, S Zekri, M Brouri
INTRODUCTION: Takayasu arteritis (TA) is an uncommon large vessel arteritis. Lesions produced by the inflammatory process can be stenotic, occlusive, or aneurysmal. Vascular changes lead to the main complications, including hypertension, most often due to renal artery stenosis or, more rarely, stenosis of the suprarenal aorta. AIM OF STUDY: Our study will assess the prevalence of hypertension during TA and describe its clinical profile. MATERIAL AND METHODS: Among 279 patients with TA resulting from single center study over a period of 35 years, we collected 128 hypertensive patients...
May 26, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28535761/the-emerging-role-of-cardiovascular-magnetic-resonance-in-the-evaluation-of-hypertensive-heart-disease
#11
REVIEW
Sophie Mavrogeni, Vasiliki Katsi, Vasiliki Vartela, Michel Noutsias, George Markousis-Mavrogenis, Genovefa Kolovou, Athanasios Manolis
BACKGROUND: Arterial hypertension is the commonest cause of cardiovascular death. It may lead to hypertensive heart disease (HHD), including heart failure (HF), ischemic heart disease (IHD) and left ventricular hypertrophy (LVH). MAIN BODY: According to the 2007 ESH/ESC guidelines, the recommended imaging technique is echocardiography (echo), when a more sensitive detection of LVH than that provided by ECG, is needed. Cardiovascular Magnetic Resonance (CMR), a non-invasive, non-radiating technique, offers the following advantages, beyond echo: a) more reliable and reproducible measurements of cardiac parameters such as volumes, ejection fraction and cardiac mass b) more accurate differentiation of LVH etiology by providing information about tissue characterisation c) more accurate evaluation of myocardial ischemia, specifically if small vessels disease is present d) technique of choice for diagnosis of renovascular, aortic tree/branches lesions and quantification of aortic valve regurgitation e) technique of choice for treatment evaluation in clinical trials...
May 23, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28533575/antihypertensive-effects-of-hydroalcoholic-extract-of-crataegus-azarolus-subspecies-aronia-fruit-in-rats-with-renovascular-hypertension-an-experimental-mechanistic-study
#12
Mohammad Reza Haydari, Mohammad Reza Panjeshahin, Elaheh Mashghoolozekr, Ali Akbar Nekooeian
BACKGROUND: Hawthorn species decreases blood pressure and relaxes precontracted vessels. This study aimed at examining the antihypertensive effect and related mechanisms of hydroalcoholic extract of Crataegus azarolus subspecies aronia fruit in rats with renovascular hypertension. METHODS: Six groups of male Sprague-Dawley rats, each containing 6 to 8 rats, were studied. The groups comprised of one sham group and 5 renal artery-clipped groups. The sham group received vehicle (distilled water 0...
May 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28514645/oleanolic-acid-modulates-the-renin-angiotensin-system-and-cardiac-natriuretic-hormone-concomitantly-with-volume-and-pressure-balance-in-rats
#13
You Mee Ahn, Yoon Hee Choi, Jung Joo Yoon, Yun Jung Lee, Kyung Woo Cho, Dae Gill Kang, Ho Sub Lee
Oleanolic acid is known to possess beneficial effects on the regulation of the cardiovascular homeostasis. However, the exact nature of the role of oleanolic acid on the regulation of body fluid balance and blood pressure homeostasis and its mechanisms involved are not well defined. Experiments were performed to identify the effects of oleanolic acid on the renin-angiotensin system and cardiac natriuretic hormone (ANP) system, and also renal function and blood pressure in normotensive and renovascular hypertensive rats...
May 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28509129/successful-long-term-effects-of-direct-renin-inhibitor-aliskiren-in-a-patient-with-atherosclerotic-renovascular-hypertension
#14
Norihiko Morisawa, Naoki Sugano, Takafumi Yamakawa, Satoru Kuriyama, Takashi Yokoo
A 64-year-old man visited our hospital with complaints of misty vision and ophthalmalgia. On admission, his blood pressure (BP) was high at 220/135 mmHg with no past history of hypertension, and he had choked discs. He was tentatively diagnosed as having idiopathic intracranial hypertension, and was later found to have atherosclerotic unilateral renovascular hypertension (RVH) based upon the extremely high plasma renin activity together with the radiological image tests. On day 3, combined antihypertensive therapies consisting of oral angiotensin II receptor blocker (ARB) and Ca channel blocker (CCB) along with intravenous CCB induced an abrupt BP lowering which led to deterioration of his renal function, progressing into acute kidney injury (AKI)...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28509120/complex-glomerular-pathology-of-thrombotic-microangiopathy-and-focal-segmental-glomerulosclerosis-forms-tumor-like-mass-in-a-renal-transplant-donor-with-severe-renovascular-hypertension
#15
Michio Nagata, Yutaka Yamaguchi, Daisuke Toki, Izumi Yamamoto, Hiroaki Shinmura, Hiroshi Kawaguchi
The pathogenesis of glomerular hypertension-mediated FSGS and its histological variations in humans remains unknown. A 47-year-old man developed nephrotic syndrome, renal dysfunction, and malignant hypertension 2 years after donating a kidney to his son. The donor's remnant kidney developed renal mass at an upper pole which was fed by an aberrant artery that branched from the root of the renal artery. Furthermore, the main non-aberrant renal artery demonstrated severe stenosis that caused renovascular hypertension, resulting in malignant hypertension...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28505045/resistant-hypertension-in-2017
#16
Sartaj Hans, John P Reilly
PURPOSE OF REVIEW: Hypertension (HTN) is a ubiquitous condition and cause for significant morbidity and mortality. Over 400 000 deaths in the United States are related to HTN every year, more than all the Americans who died through all of World War II. As many as half the patients with HTN in the United States have resistant HTN, a blood pressure greater than 140/90 mmHg despite three medications including a diuretic. It appears that the prevalence of HTN and resistant HTN is increasing over time...
July 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28449828/hypertension-canada-s-2017-guidelines-for-diagnosis-risk-assessment-prevention-and-treatment-of-hypertension-in-adults
#17
Alexander A Leung, Stella S Daskalopoulou, Kaberi Dasgupta, Kerry McBrien, Sonia Butalia, Kelly B Zarnke, Kara Nerenberg, Kevin C Harris, Meranda Nakhla, Lyne Cloutier, Mark Gelfer, Maxime Lamarre-Cliche, Alain Milot, Peter Bolli, Guy Tremblay, Donna McLean, Sheldon W Tobe, Marcel Ruzicka, Kevin D Burns, Michel Vallée, G V Ramesh Prasad, Steven E Gryn, Ross D Feldman, Peter Selby, Andrew Pipe, Ernesto L Schiffrin, Philip A McFarlane, Paul Oh, Robert A Hegele, Milan Khara, Thomas W Wilson, S Brian Penner, Ellen Burgess, Praveena Sivapalan, Robert J Herman, Simon L Bacon, Simon W Rabkin, Richard E Gilbert, Tavis S Campbell, Steven Grover, George Honos, Patrice Lindsay, Michael D Hill, Shelagh B Coutts, Gord Gubitz, Norman R C Campbell, Gordon W Moe, Jonathan G Howlett, Jean-Martin Boulanger, Ally Prebtani, Gregory Kline, Lawrence A Leiter, Charlotte Jones, Anne-Marie Côté, Vincent Woo, Janusz Kaczorowski, Luc Trudeau, Ross T Tsuyuki, Swapnil Hiremath, Denis Drouin, Kim L Lavoie, Pavel Hamet, Jean C Grégoire, Richard Lewanczuk, George K Dresser, Mukul Sharma, Debra Reid, Scott A Lear, Gregory Moullec, Milan Gupta, Laura A Magee, Alexander G Logan, Janis Dionne, Anne Fournier, Geneviève Benoit, Janusz Feber, Luc Poirier, Raj S Padwal, Doreen M Rabi
Hypertension Canada provides annually updated, evidence-based guidelines for the diagnosis, assessment, prevention, and treatment of hypertension. This year, we introduce 10 new guidelines. Three previous guidelines have been revised and 5 have been removed. Previous age and frailty distinctions have been removed as considerations for when to initiate antihypertensive therapy. In the presence of macrovascular target organ damage, or in those with independent cardiovascular risk factors, antihypertensive therapy should be considered for all individuals with elevated average systolic nonautomated office blood pressure (non-AOBP) readings ≥ 140 mm Hg...
May 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28429121/renovascular-hypertension-results-in-adulthood-of-renal-autotransplantation-performed-in-children
#18
Bertrand Chavent, Ambroise Duprey, Marie-Pierre Lavocat, Christine Fichtner, Anne-Marie Beraud, Jean-Noel Albertini, Jean-Pierre Favre, Nicolas Maillard, Xavier Barral
BACKGROUND: This study describes the long-term results of renal autotransplantation for renovascular hypertension performed in children who are now 21 years of age or older. METHODS: Sixteen children (4 boys, 12 girls) with a mean age of 11.2 years at the time of the procedure underwent ex-vivo surgery at the university hospital of Saint-Etienne between 1992 and 2008. Acetylsalicylic acid was used for antiplatelet therapy in the postoperative period, without routine anticoagulation...
April 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28417852/nuclear-medicine-in-pediatric-nephro-urology-an-overview
#19
REVIEW
Iosif Mendichovszky, Bernardita Troncoso Solar, Naima Smeulders, Marina Easty, Lorenzo Biassoni
In the context of ante-natally diagnosed hydronephrosis, the vast majority of children with a dilated renal pelvis do not need any surgical treatment, as the dilatation resolves spontaneously with time. Slow drainage demonstrated at Tc-99m-mercaptoacetyltriglycine (MAG3) renography does not necessarily mean obstruction. Obstruction is defined as resistance to urinary outflow with urinary stasis at the level of the pelvic-ureteric junction (PUJ) which, if left untreated, will damage the kidney. Unfortunately this definition is retrospective and not clinically helpful...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28393507/-nephrectomies-in-poor-or-non-functioning-kidneys-is-it-the-right-thing-to-do
#20
B Estors, A E Hernández, E Calleja, M D Rodrigo, J Lumbreras, C Marhuenda
AIM OF THE STUDY: To review our management and outcomes of nephrectomies performed in patients with non-functioning kidneys. METHODS: Retrospective analysis of the patients who underwent nephrectomy surgery in our hospital between 2010 and 2014. Data was collected from the patient charts paying special attention to the clinical resolution of the symptoms that motivated surgery. MAIN RESULTS: A total of 18 nephrectomies were performed. Median age was of 6,5 years (range: 11 months to 15 years)...
July 10, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
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