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Tellez Armando A Skirball Center for Innovation, Cardiovascular Research Foundation, Orangeburg, NY, - - 2014
Aims: The efficacy of paclitaxel-coated balloons (PCB) for the treatment of superficial femoral artery (SFA) disease has been demonstrated in the clinical setting. Due to the high frequency of arterial calcification found in this vascular territory, the adjunctive use of atherectomy plus PCB has been proposed. In this study, we ...
Voiculescu Adina A Renal Division, Brigham and Women's Hospital, Boston, Massachusetts, USA; Nephrology Department, University Hospital Dusseldorf, Dusseldorf, Germany. Electronic address: - - 2014
We report our experience with duplex ultrasound in young patients with renal artery stenosis (RAS) or middle aortic syndrome (MAS) before and after surgery (1995 and 2009). Of 36 patients (mean age: 13 ± 7 y), 21 had RAS and 15 had MAS. For patients with RAS, the Vmax in the affected artery ...
Bing Fabrice - - 2012
INTRODUCTION: High-porosity (HP) and flow-diverting (FD) stents are increasingly used to treat intracranial aneurysms. In vivo device deformations and their impact on the porosity of the segment of device lying over the aneurysm neck remain inadequately characterized. METHODS: Porosities of different braided FDs were studied in straight and 90° curved ...
Trof Ronald J - - 2012
To evaluate the effect of hemodynamic management guided by upper limits of cardiac filling volumes or pressures on durations of mechanical ventilation and lengths of stay in critically ill patients with shock. Prospective, randomized, clinical trial. Mixed intensive care unit of a large teaching hospital and mixed intensive care unit ...
Kural Mehmet H MH Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, United - - 2012
Computational models have the potential to provide precise estimates of stresses and strains associated with sites of coronary plaque rupture. However, lack of adequate mathematical description of diseased human vessel wall mechanical properties is hindering computational accuracy. The goal of this study is to characterize the behavior of diseased human ...
Sasaguri Kohei - - 2012
The objective of this study was to evaluate contrastenhanced computed tomography findings related to obstructive shock due to ascending aortic dissection (AAD). The computed tomography findings in 9 AAD patients with shock, 11 AAD patients without shock, and 18 control subjects were evaluated for (1) pericardial effusion, (2) diameter of ...
Morlacchi Stefano - - 2011
Despite their success, stenting procedures are still associated to some clinical problems like sub-acute thrombosis and in-stent restenosis. Several clinical studies associate these phenomena to a combination of both structural and hemodynamic alterations caused by stent implantation. Recently, numerical models have been widely used in the literature to investigate stenting ...
Molinari Filippo - - 2011
The evaluation of the carotid artery wall is essential for the diagnosis of cardiovascular pathologies or for the assessment of a patient's cardiovascular risk. This paper presents a completely user-independent algorithm, which automatically extracts the far double line (lumen-intima and media-adventitia) in the carotid artery using an Edge Flow technique ...
Raman Bhargav - - 2011
Aortoiliac and lower extremity arterial atherosclerotic plaque burden is a risk factor for the development of visceral and peripheral ischemic and aneurismal vascular disease. While prior research allows automated quantification of calcified plaque in these body regions using CT angiograms, no automated method exists to quantify soft plaque. We developed ...
Sengupta Dibyendu - - 2011
Kawasaki Disease (KD) is the leading cause of acquired pediatric heart disease. A subset of KD patients develops aneurysms in the coronary arteries, leading to increased risk of thrombosis and myocardial infarction. Currently, there are limited clinical data to guide the management of these patients, and the hemodynamic effects of ...
Chen Henry Y - - 2012
In-stent restenosis and stent thrombosis remain clinically significant problems for bifurcation lesions. The objective of this study is to determine the haemodynamic effect of the side branch (SB) on main branch (MB) stenting. We hypothesize that the presence of a SB has a negative effect on MB wall shear stress ...
Bucci Federico - - 2012
The occlusion of the infrarenal aorta is a rare event, which is potentially life threatening. We present the case of a heavy smoking, 35-year-old woman who was referred to the emergency department of our hospital because of sudden abdominal pain and urinary incontinence. She also complained of a two-year history ...
Kim Jin-Hwan - - 2011
The present study aims at investigating biomechanical failure behaviour of human aneurismal aortic tissues so as to diagnose the rupture risk of aneurysms more accurately. An inflation test is performed on aneurismal aortic tissues up to failure and full-field measurements are achieved using stereo digital image correlation. Then, an appropriate ...
Nathan Derek P - - 2011
Repair of fusiform descending thoracic aortic aneurysms (DTAs) is indicated when aneurysmal diameter exceeds a certain threshold; however, diameter-related indications for repair of saccular DTA are less well established. Human subjects with fusiform (n = 17) and saccular (n = 17) DTAs who underwent computed tomographic angiography were identified. Patients ...
Hamid Tahir - - 2011
Congenital coronary anomalies are uncommon and are usually diagnosed incidentally during coronary angiogram or autopsy. Isolated coronary artery anomalies and the anomalous origin of left main stem (LMS) from the proximal portion of the right coronary artery or from the right sinus of valsalva are extremely rare. A 68 years ...
Yamada Shunsuke - - 2011
Vascular calcification is closely related to cardiovascular morbidity and mortality. Accumulating data indicate that oxidative stress is associated with dysfunction of various organs including cardiovascular diseases in chronic kidney disease (CKD). However, it remains undetermined if oxidative stress induced by uremia promotes arterial medial calcification. The present study investigated the ...
Khamdaeng T T Department of Mechanical Engineering, Chiang Mai University, Chiang Mai, - - 2012
Arterial stiffness is well accepted as a reliable indicator of arterial disease. Increase in carotid arterial stiffness has been associated with carotid arterial disease, e.g., atherosclerotic plaque, thrombosis, stenosis, etc. Several methods for carotid arterial stiffness assessment have been proposed. In this study, in vivo noninvasive assessment using applanation tonometry ...
Chen Henry Y - - 2011
Stent can cause flow disturbances on the endothelium and compliance mismatch and increased stress on the vessel wall. These effects can cause low wall shear stress (WSS), high wall shear stress gradient (WSSG), oscillatory shear index (OSI), and circumferential wall stress (CWS), which may promote neointimal hyperplasia (IH). The hypothesis ...
Hwang Wonjun W Department of Biomedical Engineering, Texas A&M University, MS 3120, 5045 Emerging Technologies Building, College Station, TX 77843-3120, - - 2012
In this study, compliant latex thin-walled aneurysm models are fabricated to investigate the effects of expansion of shape memory polymer foam. A simplified cylindrical model is selected for the in-vitro aneurysm, which is a simplification of a real, saccular aneurysm. The studies are performed by crimping shape memory polymer foams, ...
Pinaud Frédéric - - 2011
OBJECTIVE: Resistance arteries remain subject to pulsatility, a potent regulator of large elastic artery tone and structure, but the effect is incompletely understood. Extracorporeal circulation during cardiac surgery is often associated with absence of pulsatility, which may affect vascular tone. To define the role of the vascular wall in the ...
Early Michael - - 2011
The use of stents in peripheral arteries has not been as successful as in coronary arteries, with high rates of restenosis and stent fracture common. Normal joint flexion induces a range of forces on the arteries, which has an unknown effect on the outcomes of stenting. The objective of this ...
Jonker Frederik H W - - 2011
Abstract Purpose: To investigate the thoracic aortic pulsatility during hypovolemic shock in an experimental porcine model. Methods: The circulating blood volume of 7 healthy Yorkshire pigs was gradually lowered until the subjects had lost 40% of their normal blood volume. Intravascular ultrasound was used to assess the aortic pulsatility in ...
Aiken Ge - - 2011
To compare vasoconstriction of the auricular artery and characteristics of blood flow in the carotid arteries between lambs grazing perennial ryegrass that was either infected with the AR6 novel endophyte (AR6), wild-type endophyte or endophyte-free. Sixteen Coopworth lambs, mean 23.7 (SD 1.8) kg, were randomly assigned to graze three, 0.10-ha ...
Mortier Peter - - 2011
Aims: The aim of this study was to compare the stent strut apposition and stent induced vessel wall stresses of currently used coronary stent designs. This may help to better understand their clinical performance and provide the insights necessary for further optimisation. Methods and results: We compared the stent strut ...
Kiss Levente - - 2011
The internal thoracic artery (ITA) is the first choice for myocardial revascularization, but atherosclerotic lesions and perioperative vasospasm may still limit its functionality. Oxidative stress via the peroxynitrite - poly-(ADP-ribose) polymerase (PARP) cascade plays an important role in the pathogenesis of impaired vascular tone via endothelial injury. We aimed to ...
Suh Dae Chul - - 2011
The computational fluid dynamics methods for the limited flow rate and the small dimensions of an intracranial artery stenosis may help demonstrate the stroke mechanism in intracranial atherosclerosis. We have modeled the high wall shear stress (WSS) in a severe M1 stenosis. The high WSS in the systolic phase of ...
Muñoz Juan Pablo - - 2011
The debilitating disease pulmonary arterial hypertension (PAH) is characterized by an elevation in blood pressure in the lung arteries caused by vessel-blocking vascular-cell proliferation. This vascular remodeling is thought to result in part from defects in the endoplasmic reticulum stress response and mitochondrial dysfunction in pulmonary artery smooth muscle cells. ...
Ganio Matthew S MS Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, 7232 Greenville Avenue, Dallas, TX 75231, - - 2011
Arterial compliance, the inverse of arterial stiffness, is a prognostic indicator of arterial health. Central and peripheral arterial compliance decrease with acute cold stress and may increase postexercise when exercise-induced elevations in core temperature are likely still to be present. Increased blood flow through the conduit arteries associated with elevated ...
Mu Dali - - 2011
The authors report a case of mental stress-induced repeatedly failing microsurgical flap. A 33-year-old female patient underwent a left breast reconstruction with deep inferior epigastric perforator flap. Repetitive arterial crisis occurred postoperatively, which eventually led to flap necrosis. In this case, there was clear correlation between the arterial crisis and ...
Yap Choon Hwai - - 2011
Aortic valve (AV) calcification is a highly prevalent disease with serious impact on mortality and morbidity. The exact cause and mechanism of the progression of AV calcification is unknown, although mechanical forces have been known to play a role. It is thus important to characterize the mechanical environment of the ...
Yu Peng - - 2011
Mouse models serve as a tool to study vein graft failure. However, in wild-type mice, there is limited intimal hyperplasia, hampering efforts to identify anti-intimal hyperplasia therapies. Furthermore, vein graft wall remodeling has not been well quantified in mice. We hypothesized that simple hemodynamic manipulations can reproducibly augment intimal hyperplasia ...
Rodríguez-Hernández Ana - - 2011
Object The conceptual division of intracranial arteries into segments provides a better understanding of their courses and a useful working vocabulary. Segmental anatomy of cerebral arteries is commonly cited by a numerical nomenclature, but an analogous nomenclature for cerebellar arteries has not been described. In this report, the microsurgical anatomy ...
Corbetta Juan Pablo - - 2011
PURPOSE: To present three cases of arterial high flow priapism (HFP) and propose a management algorithm for this condition. MATERIALS AND METHODS: We studied three children with post-traumatic arterial HFP (two patients with perineal trauma and one with penis trauma). RESULTS: Spontaneous resolution was observed in all the patients. The ...
Drees Randi R Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Linden Drive 2015, Madison, WI 53706, USA. - - 2011
Pulmonary angiography using 64-multidetector-row computed tomography (MDCT) was used to evaluate pulmonary artery anatomy, and determine the sensitivity of pulmonary artery segment visualization in four Beagle dogs using images reconstructed to 0.625 mm and retro-reconstructed to 1.25 and 2.5 mm slice thickness. Morphologically, characteristic features included a focal narrowing in ...
Costalat Vincent - - 2011
The present study describes a new approach for aneurysm volume quantification on three-dimensional angiograms, which focuses on solving three common technical problems: the variability associated with the use of manual thresholds, the irregular morphology of some aneurysms, and the imprecision of the limits between the parent artery and the aneurysm ...
Pierret Charles - - 2011
Tuberculous aneurysms of the aorta are quite rare, but are exceptional when found in multiple locations. We report the case of multiple tuberculous aortic aneurysms of the thoracic and abdominal aorta in a 19-year-old female discovered when she consulted for thrombocytopenic purpura. The treatment for both locations included prolonged antituberculous ...
Kamizono K - - 2011
Background:During neck dissection, the current practice is to preserve the internal jugular vein in the majority of cases. However, sacrifice of bilateral internal jugular veins is required in rare cases. Simultaneous excision of both internal jugular veins is known to frequently cause fatal complications. Even if staged, bilateral internal jugular ...
Cross Jane E - - 2011
Popliteal artery aneurysms represent a common pathology that vascular surgeons are often confronted with. However, several issues remain incompletely understood, including indications for intervention and optimal methods of treatment. In the following article, our discussants debate the appropriate management of small popliteal artery aneurysms. Further complicating this discussion is the ...
Boddu Demudu Babu - - 2011
Transcranial Doppler (TCD) is often used as a screening tool for detecting intracranial stenosis. Since TCD results may vary among laboratories and sonographers, it requires validation against an imaging modality. We evaluated diagnostic accuracy of TCD performed in our laboratory against time-of-flight (TOF) magnetic resonance angiography (MRA) in detecting intracranial ...
Uchino Akira - - 2011
Persistent primitive olfactory artery (PPOA) is a relatively rare variation of the proximal anterior cerebral artery (ACA) that generally follows an extreme antero-inferior course and takes a hairpin turn. To our knowledge, incidence of PPOA has not been reported, so we researched cases in our institution records to determine incidence ...
Margey Ronan - - 2011
Upper extremity deep venous thrombosis (UEDVT) accounts for between 4% and 10% of all deep venous thromboses, and may be due to primary or secondary causes. The incidence of UEDVT is increasing, partly due to the exponential growth in the use of central venous catheters and the increasing placement of ...
Chapman Brian E BE Division of Biomedical Informatics, Department of Medicine, University of California, San Diego, La Jolla, CA 92093-0728, USA. - - 2011
In this paper we describe an application called peFinder for document-level classification of CT pulmonary angiography reports. peFinder is based on a generalized version of the ConText algorithm, a simple text processing algorithm for identifying features in clinical report documents. peFinder was used to answer questions about the disease state ...
Pande Shantanu - - 2011
Tetralogy of Fallot with atretic or absent pulmonary valve may require pulmonary valve replacement or reconstruction. We propose a technique of reconstruction of a trileaflet valve at the level of the pulmonary annulus using untreated autologous pericardium. Six cases operated upon, using this technique, had trivial pulmonary regurgitation with a ...
Altiok Ertunc - - 2011
BACKGROUND: Percutaneous edge-to-edge repair with the MitraClip device has been shown to allow effective treatment of mitral regurgitation. It is mainly guided by transesophageal echocardiography while fluoroscopic guidance is of less importance. The impact of real-time three-dimensional transesophageal echocardiography (RT 3-D TEE) for guidance of this complex interventional procedure has ...
Yuen James C - - 2011
Hypothenar hammer syndrome is an uncommon cause of symptomatic ischemia of the hand secondary to the formation of aneurysm or thrombosis of the ulnar artery as a result of repetitive trauma to the hypothenar region. The injury to the palmar ulnar artery occurs in subjects who use the hypothenar part ...
Firstenberg Michael S - - 2011
Initially superior vena cava obstruction is typically managed by an endovascular approach. However, in some patients, particularly those in whom angioplasty and stenting is not technically possible, or those who have recurrent disease after previous endovascular repair, an open surgical approach may be indicated. Conduit choices for caval reconstruction are ...
Hameeteman K - - 2011
This paper describes an evaluation framework that allows a standardized and objective quantitative comparison of carotid artery lumen segmentation and stenosis grading algorithms. We describe the data repository comprising 56 multi-center, multi-vendor CTA datasets, their acquisition, the creation of the reference standard and the evaluation measures. This framework has been ...
Valverde Israel - - 2011
Objectives: To evaluate the current disagreement between the gold standard X-ray angiography (XRA) and magnetic resonance angiography (MRA) for the measurement of peripheral pulmonary artery stenosis (PPAS). Background: MRA may help planning of catheter interventions for PPAS. However, there are sources of disagreement between XRA and MRA as measures are ...
Sugawara Yasuhiko - - 2011
BACKGROUND: A left liver graft in living donor liver transplantation often has 2 arterial stumps. The indication for multiple arterial reconstructions remains controversial. The aim of this retrospective study was to investigate whether single anastomosis of a left liver graft affects the outcome of living donor liver transplantation. METHODS: When ...
Vaid Urvashi - - 2011
We report a case of a 62-year-old male who presented to our intensive care unit with hypoxemia six hours after retinal surgery. He had a negative computed tomography pulmonary angiogram (CTPA) but an echocardiogram done emergently revealed McConnell's sign. He was thrombolysed and had rapid improvement in oxygenation and hemodynamics. ...
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