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Results 101 - 150 of 770
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Loh Y - - 2010
BACKGROUND AND PURPOSE: Use of the Merci retriever is increasing as a means to reopen large intracranial arterial occlusions. We sought to determine whether there is an optimum number of retrieval attempts that yields the highest recanalization rates and after which the probability of success decreases. MATERIALS AND METHODS: All ...
Mordasini P - - 2010
BACKGROUND AND PURPOSE: Mechanical thrombectomy in ischemic stroke is of increasing interest as it is a promising strategy for fast and efficient recanalization. Several thrombectomy devices have been introduced to the armentarium of mechanical thrombectomy. Currently, new devices are under development and are continuously added to the neurointerventional tool box. ...
Koffijberg H - - 2011
Background Aneurysm occlusion after subarachnoid haemorrhage (SAH) aims to improve outcome by reducing the rebleeding risk. With increasing age, overall prognosis decreases, and the complications of aneurysm occlusion increase. The balance of risks for aneurysm occlusion in elderly SAH patients in different age categories and clinical conditions is unknown. Methods ...
Thatipelli Mallik R - - 2009
PURPOSE: To present the safety and short-term outcomes of using controlled blunt microdissection catheter-assisted revascularization of symptomatic chronic total occlusions of the lower extremity. MATERIALS AND METHODS: A retrospective study was performed on 61 patients (46 men) with a mean age of 72.3 years +/- 9.4 who underwent 67 procedures ...
Ehara Mariko - - 2009
BACKGROUND: Percutaneous coronary intervention (PCI) for chronic total occlusions (CTO) remains a challenge. Multislice computed tomographic coronary angiography (CTCA) allows noninvasive evaluation of the coronary artery by visualizing vessel trajectory and morphological features at the occluded site. The aim of this study was to assess the value of CTCA to ...
van der Steeg H J J - - 2009
Angio-Seal is a frequently used vascular closure device after arterial catheterisation. Major complications are infrequently reported. We present four cases occurring within a 2-month period in our hospital with dislodgement of an Angio-Seal causing acute arterial occlusion, resulting in loss of limb in one case. Surgical intervention was necessary in ...
Murarka Shishir - - 2009
Peripheral artery disease continues to increase in an ever-aging society and consumes a significant part of health resources. Chronic total occlusions account for a significant portion of the lesions encountered by endovascular interventionalists. Unlike the coronary circulation, these occlusions are often long and associated with other features of complexity. The ...
Wu Wei-Wei - - 2009
OBJECTIVE: To investigate the clinical characteristics and treatment strategy of lower extremity arterial occlusive disease in patients with Crohn's disease (CD). METHODS: Clinical information of 9 cases suffering from lower extremity arterial occlusion and CD was investigated retrospectively. RESULTS: All the cases were less than 50 years old and the ...
Schild Hans H - - 2009
The Amplatzer vascular plug has been used as an embolic device in a variety of cardiovascular interventions. The present report describes successful transrenal ureter occlusion with an Amplatzer plug inserted into an excised latex cover. The procedure led to immediate ureter occlusion in a patient with vesicovaginal fistula. Further investigation ...
Hwang Joo Ha - - 2010
Targeted vascular occlusion is desirable for clinical therapies such as in the treatment of esophageal and gastric varices and varicose veins. The feasibility of ultrasound-mediated endothelial damage for vascular occlusion was studied. A segment of a rabbit auricular vein was treated in vivo with low duty cycle, high peak rarefaction ...
Moinzadeh Alireza - - 2009
Renal vascular clamping with ensuing warm ischemia is typically needed during robotic or laparoscopic partial nephrectomy. We developed a technique for angiographic delivery of the novel intra-arterial reverse thermoplastic polymer LeGoo-XL that allows temporary selective vascular occlusion with normal perfusion of the remaining kidney. Eight pigs underwent a total of ...
Hansen A - - 2009
Increasing prevalence of diabetes mellitus is frequently associated with complex tibioperoneal obstructive disease and a high rate of amputations. Endovascular therapy of arteries below the knee has emerged as a promising revascularization technique for patients with critical limb ischemia. Recent advances in catheter technology applied below the knee will increase ...
Iwata Tomonori - - 2009
OBJECTIVE: To report a case of successful recanalization using the combination technique of reverse flow and downstream filtering in chronic total occlusion of the bilateral vertebral artery (VA). CLINICAL PRESENTATION: A 59-year-old man had experienced attacks consisting of vertigo and/or dysarthria more than 1 year before presentation. He experienced symptoms ...
Adlakha Satjit - - 2009
Internal iliac artery stenosis or occlusion has been documented to cause hip pain, erectile dysfunction, and buttock claudication. Endovascular repair for patients with significant stenosis has been well documented, but chronic total occlusion revascularizations have not been reported in the literature. The reluctance to attempt percutaneous intervention may be in ...
Moschetta M - - 2009
This study aimed to correlate computed tomography (CT) findings and outcomes in patients affected by bowel infarction. Twenty-seven patients with bowel infarction due to vascular obstruction were evaluated with multidetector CT (MDCT) to establish the prognostic value of CT findings and their correlation with the origin of the ischaemia. The ...
Parikh Keyur H - - 2009
Aims: To evaluate the safety and efficacy of the CiTop Expander guidewire in attempting to cross through chronic total occlusion in CAD patients with various coronary dimensions and morphology. Although chronic total occlusions are encountered frequently in patients with coronary artery disease, an effective strategy to deal with them has ...
Roos Justus E - - 2009
RATIONALE AND OBJECTIVES: Existing density- and gradient-based automated centerline-extraction algorithms fail in severely diseased or occluded arterial segments for the generation of curved planar reformations (CPRs). We aimed to quantitatively and qualitatively assess the precision of a knowledge-based centerline-extraction algorithm in patients with occluded femoro-popliteal artery (FPA). MATERIAL AND METHODS: ...
Koutsouraki Ephrosyni - - 2009
The thalami of the human brain obtain their blood supply from many perforating arteries, which exhibit complex distribution and many variations. One rare variation is the artery of Percheron that supplies the paramedian thalami bilaterally. This artery arises from the first segment of the posterior cerebral artery and gives rise ...
Kallmes D F - - 2009
BACKGROUND AND PURPOSE: We report a preclinical study of a second-generation endoluminal device (Pipeline Embolization Device [PED-2] for aneurysmal occlusion and compare the PED-2 with its first-generation predecessor (PED-1). MATERIALS AND METHODS: Our Institutional Animal Care and Use Committee approved all studies. The PED-2 is a braided endoluminal, flow-diverting device ...
Valecchi Debora - - 2009
Lower limb peripheral arterial occlusive disease (PAOD) is highly prevalent and causes disability and poor quality of life. The purpose of our study was to evaluate the pattern of proximal and distal occlusion and collateral circulation of lower limb arteries using combined contrast arteriography and color doppler ecography. The study ...
Puca Alfredo - - 2009
BACKGROUND: Temporary occlusion of an intracranial artery during microvascular anastomosis is a major risk factor in cerebrovascular surgery. A new laser vascular welding technique that minimizes the occlusion time of the recipient vessel has been developed and is described in this report. METHOD: A new minimally occlusive technique of end-to-side ...
Bain Sarah E - - 2009
Bilateral paramedian thalamic and mesencephalic infarcts are infrequently reported in adults, and to our knowledge, has never been reported in a child. The presumed etiology is an occlusion of the artery of Percheron, an uncommon vascular variation, in which a single common trunk from one of the P1 segments of ...
Lee Dong Ho - - 2009
PURPOSE: To assess the frequency of diaphragmatic weakness and its determinant factors after transcatheter arterial chemoembolization of the right inferior phrenic artery (IPA) in patients with hepatocellular carcinoma (HCC). MATERIALS AND METHODS: From June 2006 to October 2006, 60 patients (48 men, 12 women; mean age, 59 years) who had ...
Yalcin-Cakmakli Gul - - 2009
Thrombolysis with recombinant tissue plasminogen activator is the only established treatment for acute ischemic stroke. Recurrent ischemic stroke involving an initially unaffected arterial territory during the course of thrombolysis has been reported but remains exceptionally rare. Here we report a 75-year-old woman with acute left middle cerebral artery occlusion who ...
Iwaki Mai - - 2009
We report a case of idiopathic pulmonary veno-occlusive disease (PVOD). The patient experienced progressively worsening dyspnea. Heart catheterization revealed severe pulmonary hypertension. High-resolution computed tomography (HRCT) showed diffuse, poorly identified centrilobular ground-glass opacities. Surgical lung biopsy led to the diagnosis of PVOD. A microscopic examination revealed occlusions of pulmonary veins ...
Horsch Alexander D - - 2009
The Rotarex(R) and Aspirex(R) are newly developed over-the-wire rotational thrombectomy catheters. These devices combine mechanical clot fragmentation and active negative-pressure removal of thrombus particles to prevent distal embolization. Several successful in vitro studies have been followed by the pursuit of different applications, and the device has been used successfully in ...
Samol Jens - - 2009
A 67-year-old woman with metastatic colorectal cancer was given her first oxaliplatin infusion as part of the XELOX protocol. She developed chest pain with ECG changes leading subsequently to a diagnosis of coronary artery spasm. To our knowledge, this is the first report of oxaliplatin-induced coronary artery spasm.
Kuraoka Mutsuki - - 2009
Several investigators have used murine models to investigate the pathophysiology of brain ischemia. The focal ischemic model is a closer approximation to human stroke which includes a necrotic core, penumbra, and undamaged tissue. Occlusion of a unilateral artery, especially the middle cerebral artery (MCA), is performed in this model, but ...
Kimura Kazumi - - 2009
PURPOSE: The present study investigated early recanalization rate of major occluded arteries after tissue plasminogen activator (t-PA) infusion using serial magnetic resonance angiography (MRA) studies. METHODS: Consecutive stroke patients treated with t-PA within 3 h of onset were prospectively studied. Four serial MRA studies were conducted: before, immediately, 24 h ...
Dosluoglu Hasan H - - 2008
Patients presenting with >14 days lower extremity ischemia are usually considered as chronic; however, patients with subacute (>14 days and <3 months) and chronic (>3 months) occlusions often have organizing thrombus. This is not considered in current recommendations for the treatment of nonacute leg ischemia and, with the increased use ...
Yang Yagai - - 2008
Most current animal models of hindlimb ischemia use acute arterial occlusion that does not accurately reflect the pathogenesis of gradual arterial occlusion in humans. We, therefore, developed the first mouse model of gradual arterial occlusion and tested the hypothesis that the mechanisms regulating blood flow recovery are critically dependent on ...
Hauck Erik F - - 2008
OBJECT: Clipping of complex cerebral aneurysms often requires temporary vessel occlusion. The risk of stroke, however, increases exponentially with occlusion time. The authors hypothesized that prolonged temporary occlusion might be tolerated if the occluded vessels were perfused with cold physiological saline solution (CPSS). A low-flow perfusion rate would permit surgical ...
Montero-Baker Miguel - - 2008
PURPOSE: To describe the technical aspects of the retrograde approach for endovascular treatment of complex popliteal and/or tibioperoneal occlusions and determine its efficacy in minimizing failure rates. METHODS: An observational registry of retrograde revascularizations was maintained at our institution over 14 months (September 2006 to December 2007). During this time ...
Miyamoto Kumie - - 2008
This report presents a patient in which balloon occlusion of the posterior descending artery wrapping the apex produced negative U waves in leads V(4-5). This case report demonstrates, for the first time, that negative U waves in the precordial leads can appear by occlusion of the long posterior descending artery.
Maldonado Thomas S - - 2008
Recent reviews of device-specific complications using neuroprotection have addressed technical difficulties during delivery as well as adverse outcomes, intraoperative and 30-day. Little has been written, however, regarding the relevance of filter occlusion during the carotid stent procedure. A retrospective review was conducted of patients undergoing carotid artery stent procedures using ...
Tetik Omer - - 2008
Radiation injury to arterial occlusion is a rare and late complication of radiotherapy. Numerous adverse reactions may occur secondary to radiation therapy. A well-known side effect is radiation-induced occlusive lesions and the enhancement of normally occurring atherosclerosis. We report a case of symptomatic right iliac and femoral artery occlusion after ...
Suzuki Kaori - - 2008
OBJECTIVE: The objective of this study was to create a calcified total occlusion model in porcine coronary arteries using a catheter-based technique. BACKGROUND: Chronic total occlusion (CTO) represents 10-20% of all angioplasty cases and remains a challenge for interventional cardiologists. One of the limitations to successful recanalization is the failure ...
Woertgen Chris - - 2008
OBJECTIVE: Intraoperative aneurysm rupture is associated with a high morbidity and mortality. Temporary vessel occlusion is an integral part of aneurysm clipping to avoid intraoperative hemorrhage. The information concerning the role of temporary occlusion regarding the development of cerebral vasospasm is sparse. The aim of this study was to provide ...
Berguiga M - - 2008
BACKGROUND: The purpose of this communication is to report a severe occlusive vasculitis as a complication of cat scratch. HISTORY AND SIGNS: A 34-year-old Hispanic woman presented with a sudden visual loss of the right eye associated with shivers, high fever and arthritis which developed 2 months after a cat's ...
Jahan Reza - - 2008
BACKGROUND AND PURPOSE: An animal model of selective middle cerebral artery (MCA) occlusion is needed for evaluation of intra-arterial (IA) delivery of thrombolytic agents. We describe a technique for MCA thrombo-occlusion in the rabbit with real-time angiographic documentation of occlusion and thrombolytic recanalization. METHODS: After femoral artery cutdown, a microcatheter ...
Guo Z - - 2008
BACKGROUND AND OBJECTIVES: This study was designed to investigate the potential existence of the response of neurons in the parafascicular nucleus of the thalamus to acute myocardial ischaemia induced by selective coronary artery occlusion and the effects of midazolam on the response in rats. METHODS: The left anterior descending branch ...
De Reuck J - - 2009
BACKGROUND AND PURPOSE: The outcome of patients with occlusion by cervical dissection (OCD) is considered to be better than of those with atherosclerotic occlusion (ATO) of cervical arteries. The present observational retrospective study investigates whether there are also differences in the occurrence of seizures between OCD and ATO patients. METHODS: ...
Sakamoto Shigeyuki - - 2008
BACKGROUND: Endovascular proximal parent artery occlusion has been performed for VA dissection. We describe a case that presented with headache associated with transient enlargement of contralateral VA after VA occlusion. CASE DESCRIPTION: A 54-year-old man presented with constant occipital headache on the left due to left VA dissection. Proximal parent ...
Huang Jen-Hsuan - - 2008
We report a case of thrombotic occlusion of left external iliac artery during the procedure of anterior lumbar interbody fusion. The diagnosis was confirmed by computed tomography angiography. The patient also developed severe rhabdomyolysis postoperatively. In spite of receiving emergent thromboendarterectomy, the patient expired on postoperative day 3. This report ...
Sylaja P N - - 2008
BACKGROUND: The outcome of vertebrobasilar ischemia depends on the clinical presentation and the presence or absence of vascular occlusion. The aim of our study was to analyze the CT angiography (CTA) predictors of outcome in patients with suspected vertebrobasilar ischemia. METHODS: We studied patients with suspected acute vertebrobasilar ischemia between ...
Otsuka Yoshinobu - - 2008
BACKGROUND AND PURPOSE: The aim of this study is to investigate whether angiographic demarcation of an occlusive lesion may predict successful or failed result of intra-arterial thrombolysis in acute middle cerebral artery (MCA) occlusion. METHODS: We reviewed retrospectively the angiography and clinical data of acute MCA occlusion patients who underwent ...
Park K-B - - 2008
PURPOSE: To test the hypothesis that a proximal arterial occlusion has a protective effect on the progression of distal arterial disease, assessed by distal runoff resistance score (DRRS). MATERIALS AND METHODS: One hundred and nineteen patients (median age 64 y, male 96%) with a unilateral iliac and/or femoral arterial occlusion ...
Hussain Farrukh - - 2007
Percutaneous intervention for complex coronary chronic total occlusions (CTO) remains challenging in spite of the improvement in wiring techniques and devices available today. The antegrade wiring approach remains the most common method for crossing and intervening in chronic total occlusions. Distal intraluminal wire placement is the most critical step in ...
Eskola Markku J - - 2007
BACKGROUND: Rapid identification of a proximal occlusion site of a major coronary artery is of paramount importance in the care of myocardial infarction (MI). It is increasingly recognized that routine electrocardiogram (ECG) can be used for that purpose, provided that expert interpretation is available. Computer-based signal analysis has potential to ...
Guglielmini Carlo - - 2008
Aortic occlusion is a rare vascular disorder in the dog. This report describes the clinical feature of an aged Boxer with complete occlusion of the abdominal aorta caused by an intraluminal thrombus. Angiography evidenced a collateral circulation, represented by the internal thoracic artery, the cranial epigastric artery and the caudal ...
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