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BACKGROUND Atherosclerotic renal-artery stenosis is a common problem in the elderly. Despite two randomized trials that did not show a benefit of renal-artery stenting with respect to kidney function, the usefulness of stenting for the prevention of major adverse renal and cardiovascular events is uncertain. METHODS We randomly assigned 947 participants(More)
PURPOSE To determine whether the transmesenteric-transfemoral method of intrahepatic portosystemic shunt (IPS) placement is safer and more efficient than the transjugular method. PATIENTS AND METHODS Sixty-six consecutive patients with cirrhosis and bleeding varices underwent 67 IPS procedures. Sixty-one of these procedures were performed using a(More)
OBJECTIVES This study conducted a prospective, single-arm, multicenter trial to evaluate the safety and efficacy of ultrasound-facilitated, catheter-directed, low-dose fibrinolysis, using the EkoSonic Endovascular System (EKOS, Bothell, Washington). BACKGROUND Systemic fibrinolysis for acute pulmonary embolism (PE) reduces cardiovascular collapse but(More)
Iliofemoral deep venous thrombosis (DVT) secondary to congenital caval abnormalities is uncommon but should be suspected in younger patients presenting with bilateral DVT. Prior reports have described thrombolytic therapy and angioplasty for noncongenital caval occlusion and intraluminal recanalization for suspected congenital caval obstruction. A novel(More)
OBJECTIVES To assess the clinical outcomes of VIABAHN® stent grafts deployed across the knee to those deployed above the knee. BACKGROUND The placement of stent-grafts across the knee joint and extending into the distal popliteal artery has been avoided due to a perceived higher risk of stent fractures, restenosis, and thrombosis due to the unique(More)
Although the treatment of atherosclerotic renal artery stenosis with use of percutaneous angioplasty, stent placement, and surgical revascularization has gained widespread use, there exist few prospective randomized controlled trials (RCTs) comparing these techniques to each other or against the standard of medical management alone. To facilitate this(More)
BACKGROUND Atherosclerotic renal artery stenosis is a problem with no consensus on diagnosis or therapy. The consequences of renal ischemia are neuroendocrine activation, hypertension, and renal insufficiency that can potentially result in acceleration of atherosclerosis, further renal dysfunction, myocardial infarction, heart failure, stroke, and death.(More)
PURPOSE To determine whether the Wallstent endoluminal prosthesis can be used to maintain patency of venous stenoses and occlusions related to hemodialysis access. MATERIALS AND METHODS Wallstents were placed in 52 patients with 56 lesions. Thirty-two lesions were in central veins and 24 were in peripheral veins. Stents were placed immediately after(More)
PURPOSE To evaluate the angiographic and clinical results of percutaneously implanted renal artery endoprostheses (stents) for the treatment of patients with ischemic nephropathy. MATERIALS AND METHODS During a 52-month period, 45 patients with azotemia (serum creatinine > or = 1.5 mg/dL) and atheromatous renal artery stenosis untreatable by, or recurrent(More)