Juergen Waigand

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PURPOSE To assess the effectiveness and safety of endovascular covered stents in the management of pseudoaneurysms and arteriovenous fistulas after cardiac and vascular catheterization. MATERIALS AND METHODS Twenty-six endovascular covered stents were used to repair 16 pseudoaneurysms, nine arteriovenous fistulas, and one combined lesion after femoral(More)
Development of femoral artery pseudoaneurysms and arteriovenous fistulas represents a continuing problem after vascular diagnostic and interventional procedures. For most patients, ultrasound-guided compression is an effective method of treating such complications. However, in patients requiring a continuous anticoagulant regimen, in those with large(More)
OBJECTIVE The purpose of this study was to determine the feasibility of using Wallstent implantation to treat superior vena cava syndrome due to malignant tumors. SUBJECTS AND METHODS Digital subtraction angiography showed obstruction of the superior vena cava in 13 patients who then underwent transluminal dilatation and Wallstent implantation. The(More)
BACKGROUND Tubular toxicity and renal ischaemia have been implicated in the pathogenesis of radiocontrast media induced nephropathy (CIN), but their respective role remains unclear. Aims. In order to evaluate changes in renal blood flow in response to intra-arterial contrast media administration, we aimed to continuously measure renal arterial perfusion by(More)
Patients with concomitant carotid and coronary artery disease are at high risk of both cardiac and cerebrovascular complications when they undergo revascularization procedures. The best management strategies for patients with concomitant disease have not been determined for certain. Staged surgical procedures with either coronary artery bypass grafting(More)
BACKGROUND Carotid artery stenting (CAS) has been advocated as an alternative to endarterectomy. To prevent cerebral atheroembolism during CAS, distal balloon occlusion of the target artery increasingly is employed during the procedure. A correlation of the size of captured particles with the incidence of periprocedural neurological complications (PNCs) has(More)
BACKGROUND We tested the value of magnetic resonance imaging (MRI) in the follow-up of patients with hypertrophic obstructive cardiomyopathy after septal artery embolization. MRI provides a noninvasive visualization of transplanar turbulent flow in order to quantify left ventricular outflow tract obstruction. METHODS AND RESULTS We followed 10 patients(More)
AIMS To evaluate the feasibility and safety of elective carotid stent implantation in patients with carotid stenoses and concomitant coronary artery disease, as an alternative to combined carotid and coronary surgery. METHODS We treated 50 patients with >70%, stenoses in 53 carotid arteries with balloon angioplasty followed by elective stent implantation.(More)
Angiotensin II (Ang II) is implicated in the development of in-stent restenosis (ISR). Ang II- and AT1-receptor blockade could possibly reduce ISR. We enrolled 206 patients into a prospective double-blind, placebo-controlled, multicenter randomized trial of candesartan cilexitil 16 mg to test this notion. Mean lumen diameter (MLD) was the primary objective(More)
The increasing frequency of stent implantation into coronary arteries is based mainly on assumptions. One of these assumptions is that stents may prevent restenosis. Stents can prevent restenosis as has been shown in two randomized studies (Stress I and Benestent I), but only in large (> 3.0mm) vessels with short denovo lesions. Despite the very tight(More)