The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform

Daniel T. Leung - One of the best experts on this subject based on the ideXlab platform.

J. Fritz Angle - One of the best experts on this subject based on the ideXlab platform.

  • Stenting for Atherosclerotic Renal Artery Stenosis
    Techniques in vascular and interventional radiology, 2010
    Co-Authors: Thomas M. Carr, Saher S. Sabri, Ulku C. Turba, Auh Whan Park, Wael E. Saad, J. Fritz Angle, Alan H. Matsumoto
    Abstract:

    Atherosclerotic Renal Artery Stenosis (ARAS) is the most common cause of Renal Artery Stenosis in the adult population. ARAS may result in progressive Renal impairment, renovascular hypertension, and/or cardiac disturbance syndromes. Because medical therapy does not affect the progressive nature of this disease process, more aggressive treatments are needed to definitively treat ARAS. When performed correctly, Renal Artery stenting has been shown to stabilize or improve Renal function and/or renovascular hypertension in 65-70% of carefully selected patients with ARAS. Therefore, percutaneous Renal Artery stenting should be considered the primary treatment for patients with symptomatic ARAS.

  • Angiographic evaluation and treatment of transplant Renal Artery Stenosis.
    Current opinion in urology, 2001
    Co-Authors: David J. Spinosa, Alan H. Matsumoto, J. Fritz Angle, Ross B. Isaacs, Klaus D. Hagspiel, Daniel T. Leung
    Abstract:

    Transplant Renal Artery Stenosis is an uncommon but important complication of Renal transplantation. It is a potentially reversible cause of patient morbidity and allograft dysfunction, which can present both early and late in the post-transplant period. Although transplant Renal Artery Stenosis can

Alan H. Matsumoto - One of the best experts on this subject based on the ideXlab platform.

  • Renal Artery Stenosis
    IR Playbook, 2018
    Co-Authors: A. Uflacker, Alan H. Matsumoto
    Abstract:

    Renal Artery Stenosis (RAS) is the anatomic narrowing of one or more of the arteries to the kidney(s), most commonly caused by atherosclerosis. This chapter will review the causes of Renal Artery Stenosis (RAS), and the pathophysiological changes and clinical manifestations that may occur due to RAS. Additionally, it will discuss the noninvasive imaging tests that are used to demonstrate the presence of RAS, how to determine its hemodynamic significance, and the role percutaneous transluminal angioplasty and Renal Artery stent placement play in the treatment of RAS.

  • Stenting for Atherosclerotic Renal Artery Stenosis
    Techniques in vascular and interventional radiology, 2010
    Co-Authors: Thomas M. Carr, Saher S. Sabri, Ulku C. Turba, Auh Whan Park, Wael E. Saad, J. Fritz Angle, Alan H. Matsumoto
    Abstract:

    Atherosclerotic Renal Artery Stenosis (ARAS) is the most common cause of Renal Artery Stenosis in the adult population. ARAS may result in progressive Renal impairment, renovascular hypertension, and/or cardiac disturbance syndromes. Because medical therapy does not affect the progressive nature of this disease process, more aggressive treatments are needed to definitively treat ARAS. When performed correctly, Renal Artery stenting has been shown to stabilize or improve Renal function and/or renovascular hypertension in 65-70% of carefully selected patients with ARAS. Therefore, percutaneous Renal Artery stenting should be considered the primary treatment for patients with symptomatic ARAS.

  • Angiographic evaluation and treatment of transplant Renal Artery Stenosis.
    Current opinion in urology, 2001
    Co-Authors: David J. Spinosa, Alan H. Matsumoto, J. Fritz Angle, Ross B. Isaacs, Klaus D. Hagspiel, Daniel T. Leung
    Abstract:

    Transplant Renal Artery Stenosis is an uncommon but important complication of Renal transplantation. It is a potentially reversible cause of patient morbidity and allograft dysfunction, which can present both early and late in the post-transplant period. Although transplant Renal Artery Stenosis can

David J. Spinosa - One of the best experts on this subject based on the ideXlab platform.

Genjiro Kimura - One of the best experts on this subject based on the ideXlab platform.

  • Prevalence and outcome of Renal Artery Stenosis in atherosclerotic patients with Renal dysfunction.
    Hypertension research : official journal of the Japanese Society of Hypertension, 2002
    Co-Authors: Takashi Uzu, Masanobu Takeji, Takashi Fujii, Naoaki Yamada, Atsushi Yamauchi, Shuichi Takishita, Genjiro Kimura
    Abstract:

    We investigated the prevalence of Renal Artery disease and outcome in a cohort of atherosclerotic patients with Renal dysfunction. We studied 44 consecutive patients who were older than 50 years of age, who had Renal dysfunction and in whom one or more of the following atherosclerotic diseases was confirmed: cerebral infarction, coronary Artery disease or peripheral vascular disease. Renal Artery Stenosis was assessed by gadolinium-enhanced magnetic-resonance angiography. Patients who were treated medically were prospectively followed up in our outpatient clinic and the impact of Renal Artery Stenosis on survival was evaluated. Renal Artery Stenosis was found in 22 (50%) of the 44 patients. Difference in kidney length and carotid Artery Stenosis were identified as independent predictors of Renal Artery Stenosis. Among the patients who were treated medically (n =42), rates of mortality were 4.4, 12.7 and 18.1 per 100 patient-years in those without Renal Artery Stenosis, those with unilateral Renal Artery Stenosis and those with bilateral Renal Artery Stenosis, respectively. The mortality and Renal survival curves were significantly different among these three groups. These findings indicate that Renal Artery Stenosis is common in patients with Renal dysfunction and concomitant cardiovascular disease, especially in those with carotid Artery Stenosis, and that a substantial difference in the length of kidneys may be a predictor of renovascular disease. Patients with Renal dysfunction resulting from Renal Artery Stenosis are at risk of death from cardiovascular disease and end-stage Renal failure. (Hypertens Res 2002; 25: 537-542)

  • Prevalence of Renal Artery Stenosis in Autopsy Patients With Stroke
    Stroke, 2000
    Co-Authors: Setsuko Kuroda, Naoki Nishida, Takashi Uzu, Masanobu Takeji, Masataka Nishimura, Takashi Fujii, Satoko Nakamura, Takashi Inenaga, Chikao Yutani, Genjiro Kimura
    Abstract:

    Background and Purpose —Atherosclerotic Renal Artery Stenosis commonly exists as one manifestation of more generalized atherosclerosis. It is a progressive but potentially curable disorder. Thus, information on Renal Artery involvement in atherosclerotic diseases could be important. We investigated the prevalence of Renal Artery Stenosis in autopsied patients with stroke over 40 years of age. Methods —From 2167 consecutive autopsy patients who died between 1980 and 1997, we studied 346 cases of mean age of 69±11 years with clinical evidence of stroke. Results —Atherosclerotic Renal Artery Stenosis (≥75% luminal area narrowing) was found in 36 patients (10.4%). Patients with Renal Artery Stenosis were older and had worse Renal function. Renal Artery Stenosis was found in 14.7%, 28.6%, and 23.9% of patients with hypertension, Renal insufficiency, and aortic aneurysm, respectively. Extracranial carotid Artery Stenosis (>50% luminal area narrowing) was found in 101 patients (29.2%). Of the 346 stroke patients, 256 had a history of brain infarction. In patients with brain infarction, Renal Artery Stenosis was found in 31 (12.1%) and carotid Stenosis was found in 81 (33.6%). Patients with carotid Artery Stenosis were more likely to have Renal Artery Stenosis than patients without carotid Artery Stenosis (24.4% versus 5.9%, P

  • Prevalence and predictors of Renal Artery Stenosis in patients with myocardial infarction
    American journal of kidney diseases : the official journal of the National Kidney Foundation, 1997
    Co-Authors: Takashi Uzu, Takashi Fujii, Satoko Nakamura, Takashi Inenaga, Chikao Yutani, Takuya Inoue, Genjiro Kimura
    Abstract:

    In recent years, the importance of renovascular disease as a cause of end-stage Renal disease has been emphasized. Among 1,788 cases autopsied during the 12-year period between 1981 and 1992 at the National Cardiovascular Center Hospital, we examined cases over 40 years of age with autopsy evidence of myocardial infarction to determine the prevalence and predictors of atherosclerotic Renal Artery Stenosis in the atherosclerotic population. Two hundred ninety-seven patients remained for analysis. In this population, atherosclerotic Renal Artery Stenosis was found in 35 patients (12%), and 10 of them had bilateral Renal Artery Stenosis. In patients with hypertension, proteinuria, and Renal insufficiency, Renal Artery Stenosis was found in 19%, 39%, and 39%, respectively. As the number of coronary vessels with significant Stenosis increased, the prevalence of Renal Artery Stenosis increased. The severity of stenotic lesions of coronary Artery was also correlated with the presence of Renal Artery Stenosis. Multiple logistic regression analysis identified age, hypertension, proteinuria, and Renal insufficiency as independent predictors of Renal Artery Stenosis. Patients with hypertension, proteinuria, and Renal insufficiency had 3.4-, 13.5-, and 4.8-fold increased risk of Renal Artery Stenosis in the population with myocardial infarction. The number of coronary arteries with severe Stenosis was also an independent predictor of Renal Artery Stenosis, and had a relative risk of 2.1. These results indicated that atherosclerotic Renal Artery Stenosis is common in patients with myocardial infarction, particularly when hypertension, proteinuria, or Renal insufficiency is present. The presence of severe multivessel coronary Artery disease suggests a higher incidence of Renal Artery Stenosis.