Search Results
Results 201 - 250 of 1909
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Ahmed Saman - - 2014
Associated pulmonary arterial hypertension related to connective tissue disorders carries significant morbidity and a high mortality. The purpose of this review article is to present an updated account of the pathogenesis, epidemiology, clinical signs and symptoms, diagnostic modalities, treatment regimens, and prognosis of this disorder.
Moulakakis K G KG Department of Vascular Surgery Athens University Medical School Attikon University Hospital, Athens, Greece - - - 2014
The most dramatic shift in the management of abdominal aortic aneurysms (AAAs) occurred in 1991, when the first endovascular AAA repair was reported. Endovascular aneurysm repair has revolutionized the treatment of infrarenal AAAs. In the last few years, the companies have developed renewed models of grafts and have modified delivery ...
Diethrich E B EB Arizona Heart Foundation, Phoenix, AZ, USA - - - 2014
A major ongoing challenge for the endograft industry has been to create an endograft that assures the same reliable aneurysm seal afforded by surgical resection and suturing of a prosthetic graft to the abdominal aortic wall. The focus of these developmental efforts has always been the proximal neck, where the ...
Krajcer Z Z Department of Cardiology and Peripheral Vascular Intervention Texas Heart Institute, St. Luke's Hospital Houston, TX, USA - - - 2014
The use of endovascular aortic aneurysm repair (EVAR) has increased dramatically, chiefly because of its low perioperative morbidity compared with open surgery. Challenges to the success of EVAR remain, however, with the most important being features of the patient's infrarenal aortic neck anatomy that make optimal placement of the endoprosthesis ...
Dumont Travis M TM *Department of Neurosurgery, and §Department of Radiology, School of Medicine and Biomedical Sciences, and ¶Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York; ‡Department of Neurosurgery, Gates Vascular Institute, Kaleida Health, Buffalo, New York, - - 2014
: Recent advancements in all phases of endovascular aneurysm treatment, including medical therapy, diagnostics, devices, and implants, abound. Advancements in endovascular technologies and techniques have enabled treatment of a wide variety of intracranial aneurysms. In this article, technical advances in endovascular treatment of cerebral aneurysms are discussed, with an effort ...
Youssef Patrick P PP Department of Neurosurgery, Emory University School of Medicine, Atlanta, - - 2014
: Dural arteriovenous fistulas are abnormal connections of dural arteries to dural veins or venous sinuses originating from within the dural leaflets. They are usually located near or within the wall of a dural venous sinus that is frequently obstructed or stenosed. The dural fistula sac is contained within the ...
Crowley R Webster RW Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, - - 2014
: Arteriovenous malformations (AVMs) of the brain represent unique challenges for treating physicians. Although these lesions have traditionally been treated with surgical resection alone, advancements in endovascular and radiosurgical therapies have greatly expanded the treatment options for patients harboring brain AVMs. Perhaps no subspecialty within neurosurgery has seen as many ...
Liao Josh J Department of Medicine, Peter Bent Brigham Hospital, Harvard Medical School, Boston, MA, - - 2014
Hypertension is a major modifiable risk factor, and clinical trials have demonstrated that successful reduction of elevated blood pressure to target levels translates into decreased risk for the development of coronary artery disease, stroke, heart failure, and renal failure. The arterial system had previously been regarded as a passive conduit ...
Brasiliense Leonardo B C LB *Department of Neurosurgery, Mayo Clinic, Jacksonville, Florida; ‡Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, - - 2014
: Revascularization of the extracranial vertebral artery has evolved significantly since the adoption of endovascular techniques. The current neurosurgical armamentarium includes microsurgical and endovascular approaches. The indications for each treatment modality, however, still need to be further delineated. In contrast to carotid artery endarterectomy and carotid artery angioplasty/stenting, there is ...
Deora Surender S NHL Medical College, Ahmedabad VS Hospital, Dept of Cardiology, Ashram road, Ellisbridge, Ahmedabad, Gujarat 380006, India. - - 2014
Bioresorbable vascular scaffold has many advantages over the metallic stent in the treatment of coronary stenotic lesions. It has added advantages in lesions that are close to the ostium of the culprit vessel, as in the left main coronary artery, right coronary artery, or left internal mammary artery, as in ...
Sullivan J F - - 2014
Renal artery aneurysms (RAA) are the second most common visceral artery aneurysm. In cases of rupture they pose a significant and emergent surgical challenge. Extracorporeal arterial reconstruction and autotransplantation is often necessary in certain complex cases that are not amenable to aneurysm repair in vivo. We report a case of ...
Stidd David A DA Department of Neurosurgery, Rush University Medical Center, Chicago, IL, - - 2014
The current assortment of microcatheters widely used for aneurysm coil embolization may not be well suited for several anatomic variants, including excessive vascular tortuosity and small aneurysms less than 3 mm. Longer microcatheters designed with a smaller caliber that can accommodate and deliver coils may be of use in these ...
Boganashanmugam Vimalraj V Interventional Fellow - Monash Heart, Monash Medical Centre, Clayton, Victoria, Australia, - - 2014
Management of acute thrombotic occlusion of coronary artery aneurysms is challenging with a lack of randomized trial evidence. We report an unusual case of a thirty year-old Indian Australian male who presented with an extensive anterior STEMI due to very large thrombus burden in a dilated proximal left anterior descending ...
Lilamand M M Gérontopôle, Centre Hospitalier Universitaire de Toulouse, France; Service de Gériatrie, Centre Hospitalier Universitaire Bichat, Paris, France. Electronic address: - - 2014
Flavonoids are a group of polyphenol compounds, ubiquitously found in plants. Great emphasis has been given to their possible benefits for cardiovascular health. These beneficial effects may be mediated by a specific action on arterial walls. Arterial stiffness is a marker of vascular aging, increasingly used in the clinical setting ...
Attizzani Guilherme F GF Division of Cardiology, Ferrarotto Hospital, University of Catania, Catania, Italy; Division of Interventional Cardiology, Pitangueiras Hospital, Jundiaí, SP, Brazil; Harrington Heart and Vascular Institute, University Hospitals, Case Medical Center, Cleveland, OH, - - 2014
Incomplete stent apposition (ISA) is characterized by the lack of contact of at least one stent strut with the vessel wall in a segment not overlying a side branch; it is more commonly found in drug-eluting than bare-metal stents. The accurate diagnosis of ISA, initially only possible with intravascular ultrasound, ...
Bell Donnie L DL Division of Interventional Neuroradiology/Endovascular Neurosurgery, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, - - 2014
Spinal artery pseudoaneurysms are rare vascular lesions with poorly defined natural history, diagnostic paradigms, and treatment strategies. We present a 68-year-old woman with severe back pain and left lower extremity weakness with spinal subarachnoid hemorrhage due to a ruptured T5 region posterior spinal artery pseudoaneurysm, and review issues related to ...
Balastegui Maria Teresa MT Department of Animal Medicine and Surgery, School of Veterinary Medicine, University CEU-Cardenal Herrera, C/Tirant Lo Blanc, 7. Alfara del Patriarca, Valencia, 46115, Spain; Department of Veterinary Clinical Sciences, School of Veterinary and Biomedical Sciences, James Cook University, Douglas, 4814, Queensland, - - 2014
The radiologic anatomy of the aortic bifurcation in the rabbit has received little study but it is important as this anatomical area is widely used in atherosclerosis research. Thirty rabbits were used to study the aortic bifurcation and subsequent branching patterns on arteriography. Fifteen different arteries were identified. Mean arterial ...
Luehr Maximilian M From the Department of Cardiac Surgery, Leipzig Heart Center-University of Leipzig, Leipzig, - - 2014
Paraplegia remains the most devastating complication after thoracic and thoracoabdominal aortic aneurysm (TAA/A) repair. The collateral network (CN) concept of spinal cord perfusion suggests segmental artery (SA) occlusion to mobilize redundant intraspinal and paraspinal arterial sources and ultimately trigger arteriogenesis, leading to spinal cord blood flow restoration within 96 to ...
Schiener Maximilian M Institute for Cardiovascular Prevention (IPEK), LMU Munich, 80336 Munich, Germany; Department of Radiation Oncology, LMU Munich, 81377 Munich, - - 2014
Atherosclerosis is a chronic inflammatory disease of the arterial wall that arises from an imbalanced lipid metabolism and a maladaptive inflammatory response. Despite intensive research on mechanisms underlying atherosclerotic lesion formation and progression during the past decade, translation of this knowledge into the clinic is scarce. Although developments have primarily ...
Dutau Herve H North University Hospital, Thoracic Oncology, Pleural Diseases and Interventional Pulmonology, Marseille, 13015 - - 2014
The airway stents restore patency in the face of luminal compromise from intrinsic and/or extrinsic pathologies. Luminal compromise beyond 50% often leads to debilitating symptoms such as dyspnea. Silicone stents remain the most commonly placed stents worldwide and have been the "gold standard" for the treatment of benign and malignant ...
Mason Eric E Department of Otolaryngology, Georgia Regents University, Augusta, GA; Center for Skull Base Surgery, Georgia Regents University, Augusta, - - 2014
Objectives: While there are many benefits to the endoscopic endonasal approach to the infratemporal fossa, involvement of the petrous portion of the internal carotid artery (ICA) poses a unique challenge. The endoscopic endonasal approach requires establishing the relationship of the petrous ICA to anatomical landmarks to guide the surgeon. This ...
Sequeira Adrian A Interventional Nephrology Section, Division of Nephrology and Hypertension, Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, - - 2014
Stent strut protrusion through the skin is a rare and a potentially dangerous complication from the cannulation of stents placed within arterio-venous fistulas and grafts. Such cases are usually managed surgically. We present a case wherein strut penetration of an arterio-venous fistula was noted at the distal (uncovered) end of ...
Christodoulidis Georgios G 1Department of Internal Medicine, Winthrop University Hospital, Mineola, NY 2St. Francis Hospital - The Heart Center, Division of Cardiology, Center of Advanced Cardiac Therapeutics, Roslyn, NY 3Department of Internal Medicine, Vanderbilt University School of Medicine, Nashville, TN 4Department of Medicine, Emory University School of Medicine, Atlanta, GA 5Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, - - 2014
Coronary artery disease (CAD) is the leading cause of death in the United States. Although CAD was formerly considered a lipid accumulation-mediated disease, it has now been clearly shown to involve an ongoing inflammatory response. Advances in basic science research have established the crucial role of inflammation in mediating all ...
Badel Pierre P Ecole Nationale Supérieure des Mines de Saint-Etienne, CIS-EMSE, CNRS:UMR5307, LGF, F-42023 Saint Etienne, France. Electronic address: - - 2014
Balloon angioplasty is a standard clinical treatment for symptomatic coronary artery disease. In this procedure, controlled damage is applied intraluminally to the wall of a stenotic artery. Dissection of the coronary artery is a commonly observed clinical complication of angioplasty; however, not all dissections can be detected angioscopically. This work ...
Ruttkay Tamas T Department of Cardiac Surgery, Sana Cardiac Surgery Stuttgart GmbH, Stuttgart, - - 2014
Background We compared the aortic, left atrial, and apical approaches to visualize the mitral valve with the goal to investigate the endoscopic anatomy and give exact step-by-step descriptions of these views. Materials and Methods The mitral valvular complex of human cadaveric fresh hearts was investigated from three approaches using 0, 30, and ...
Hodgkinson Jonathan D JD Department of Surgery and Cancer, Imperial College, London, United Kingdom. Electronic address: - - 2014
We describe a novel use of an Amplatzer III plug device (St. Jude Medical, St. Paul, Minn) in the treatment of a traumatic arteriovenous fistula between the innominate vein and the origin of the left common carotid artery causing symptomatic right heart failure. A review of the literature indicates this ...
Ung Timothy H TH School of Medicine, University of Colorado School of Medicine, Aurora, CO - - 2014
Optimal vascular control during neurosurgical resection of large sub-frontal meningioma is hindered by limited early access to the ethmoidal arteries. Pre-operative ligation of the ethmoidal arteries 1) induces tumor necrosis simplifying resection and 2) minimizes blood loss and operative time. Early arterial ligation is an advantage of endoscopic approaches to ...
Huang Angela H AH Department of Biomedical Engineering, Yale University, New Haven, CT, 06511, USA, - - 2014
This review will focus on two elements that are essential for functional arterial regeneration in vitro: the mechanical environment and the bioreactors used for tissue growth. The importance of the mechanical environment to embryological development, vascular functionality, and vascular graft regeneration will be discussed. Bioreactors generate mechanical stimuli to simulate ...
Pullamsetti Soni Savai SS Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany, Universities of Giessen and Marburg Lung Center, Giessen, Germany ; - - 2014
The development of therapeutic concepts in pulmonary hypertension is intimately linked with the unraveling of pathogenetic sequelae. This perspective highlights advances in our understanding of the regulation of vasomotion and vascular remodeling that have led to "reverse-remodeling" and regenerative strategies as novel treatment concepts. Progress has been made in understanding ...
Lluri Gentian G Ahmanson/UCLA Adult Congenital Heart Disease Center, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, - - 2014
Coronary artery development is a delicate, complex, and finely tuned process that includes multiple interactions among many pathways, especially in the pericardium and the developing myocardium. There still exists some controversy on the exact origin of certain cellular components. Nevertheless, an understanding of this extremely important developmental process is paramount ...
Saxena Pankaj P Division of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, - - 2014
Described here is a technique of right atrial cannulation to establish cardiopulmonary bypass for repairing descending thoracic/aortic arch aneurysms via left thoracotomy. This technique provides satisfactory venous return and can be used for retrograde cerebral perfusion during aortic surgery. The technique is safe and has been extensively used by the ...
Byrne Anthony L AL Department of Respiratory Medicine, Prince of Wales Hospital, Randwick, NSW, - - 2014
Peripheral venous blood gas (PVBG) analysis is increasingly being used as a substitute for arterial blood sampling; however, comparability has not been clearly established. To determine if the pH, PCO2 and PO2 obtained from PVBG analysis is comparable with arterial blood gas (ABG) analysis. A search was conducted of electronic ...
Spiotta Alejandro M AM Division of Neurosurgery, Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, - - 2014
While intravenous administration of tissue plasminogen activator (tPA) remains the only FDA-approved treatment modality for acute ischemic stroke, many patients do not meet the criteria for intravenous tPA and are offered intra-arterial therapy. Rapid advances in devices and approaches have marked the evolution of thrombectomy over the past decade from ...
Taal Maarten W MW Department of Renal Medicine, Royal Derby Hospital, Derby, - - 2014
Epidemiological studies have established arterial stiffness as an important risk factor for cardiovascular events and mortality in people with chronic kidney disease (CKD) at all stages. Although much has been learned about the mechanisms that lead to arterial stiffening in CKD, many questions remain unanswered and the optimal interventions for ...
Leyon Joe J - - 2014
Percutaneous vascular embolization is one of the major applications of interventional radiology. A wide variety of embolization agents are currently available for clinical use. The interventional radiologist needs to be up to date with the newer and different types of embolic agents available along with their biopharmaceutical characteristics, strengths, and ...
Izzy Saef S Department of Neurology (Neurocritical Care), University of Massachusetts Medical School, 55 Lake Ave North, S-5, Worcester, MA, 01655, - - 2014
Cerebral vasospasm (cVSP) consists of the vasoconstriction of large and small intracranial vessels which can lead to cerebral hypoperfusion, and in extreme cases, delayed ischemic deficits with stroke. While most commonly observed after aneurysmal subarachnoid hemorrhage (aSAH), cVSP can also occur after traumatic brain injury (TBI) as we have described ...
González J J Servicio de Urología, Hospital Central de la Cruz Roja San José y Santa Adela, Avenida de Reina Victoria 22-26, 28003, Madrid, Madrid, Spain, - - 2014
A renal artery aneurysm is defined as a dilated segment of renal artery that exceeds twice the diameter of a normal renal artery. Although rare, the diagnosis and incidence of this entity have been steadily increasing due to the routine use of cross-sectional imaging. In certain cases, renal artery aneurysms ...
Agarwal Nitin N Departments of Neurological - - 2014
Central retinal artery occlusion, although relatively rare, is an ophthalmological emergency. If left untreated, complete blindness will ensue. Conventional therapies have not significantly improved outcomes compared with the natural history of the disease. Several case series of more recent endovascular approaches, such as intraarterial fibrinolysis, report successful outcomes. Still other ...
Reynolds Matthew R MR Departments of Neurological - - 2014
Extracranial-intracranial (EC-IC) arterial bypass has been used in the treatment of various neurosurgical pathologies including skull base tumors requiring sacrifice of a large intracranial artery; complex intracranial aneurysms requiring trapping; and distal revascularization, moyamoya disease, and symptomatic cerebrovascular stenoocclusive disease. The latter indication has been the subject of intense investigations ...
Demarco J Kevin JK Department of Radiology, Michigan State University, East Lansing, Michigan; - - 2014
In this paper, the authors review the definition of high-risk plaque as developed by experienced researchers in atherosclerosis, including pathologists, clinicians, molecular biologists, and imaging scientists. Current concepts of vulnerable plaque are based on histological studies of coronary and carotid artery plaque as well as natural history studies and include ...
Salem Jean F JF Department of Surgery, American University of Beirut Medical Center, Beirut, - - 2014
Inferior phrenic artery (IPA) pseudoaneurysm is an extremely rare complication of chronic pancreatitis with only three cases reported in the literature so far. It is a serious condition that can be life-threatening if not diagnosed promptly. Recent advances in endovascular interventions made angiography with embolisation the modality of choice for ...
Grunwald Iris Q IQ Director Neuroscience and Medical Affairs, PMI, Anglia Ruskin University, CM1 1SQ Chelmsford, United Kingdom. - - 2014
The purpose of this article is to give an overview of the management of the most common complications encountered during subarachnoid hemorrhage and endovascular treatment of intracranial aneurysms. We reviewed the literature and identified the complications encountered during endovascular treatment of intracranial aneurysms. We report current management strategies of complications ...
Chan Patrick G PG Division of Cardiac Surgery, Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA, - - 2014
Rheumatic mitral valve disease often manifests with leaflet fibrosis, commissural fusion and early calcific degeneration. The thickening and fibrosis of the valvular and subvalvular apparatus has made prosthetic mitral replacement the traditional surgical solution. However, favourable valve morphology in some patients may permit a durable mitral repair rather than replacement. ...
Dai Jian J Department of Cardiology, Yue Yang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, - - 2014
The approach to a chronic total occlusion (CTO) still remains one of the most technical challenges in percutaneous coronary intervention (PCI). CTO lesions with a blunt entry point, calcification, and failure of a previous approach, are the independent predictors of CTO-PCI failure. Here we report a successful antegrade approach for ...
Sanidas Elias E Antwerp Cardiovascular Institute Middelheim, Antwerp, - - 2014
The growing use of the transradial approach for percutaneous coronary interventions has been shown to decrease the risk of major vascular complications. However, in this case report we describe a iatrogenic left main dissection during diagnostic coronary catheterization, which remains a rare, but still life-threatening condition. The adjunctive use of ...
Zhao Yidan Y Latner Thoracic Surgery Research Laboratories and Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, - - 2014
Although multiple gene and protein expression have been extensively profiled in human pulmonary arterial hypertension (PAH), the mechanism for the development and progression of pulmonary hypertension remains elusive. Analysis of the global metabolomic heterogeneity within the pulmonary vascular system leads to a better understanding of disease progression. Using a combination ...
Lee Chang-Young CY Department of Neurosurgery, Keimyung University School of Medicine, Daegu, Republic of - - 2014
The crossing Y-stent technique is a viable option for coiling of wide-necked bifurcation aneurysms. However, little is known about the long-term impact of this technique. Very late (>1 year) stent thrombosis following the placement of a crossing Y-stent with dual closed-cell stents for the coiling of a wide-necked basilar tip ...
Roy Tanushree T Post Graduate Student, Department of Anatomy, North Bengal Medical College , Darjeeling, India - - 2014
In a female cadaver unilateral variations were found in upper limb arterial system - as (1) high-up origin of ulnar artery at arm, (2) persistent prominent arteria nervii mediana or median artery, (3) common interosseous artery branching out of brachial artery. Literature review revealed these coexistent anomalies as the consequence ...
Vadivel Arul A Ottawa Hospital Research Institute, Sprott Center for Stem Cell Research, Regenerative Medicine Program and Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, - - 2014
Bronchopulmonary dysplasia (BPD), the chronic lung disease of prematurity, remains a major health problem. BPD is characterized by impaired alveolar development and complicated by pulmonary hypertension (PHT). Currently there is no specific treatment for BPD. Hydrogen sulfide (H2S), carbon monoxide and nitric oxide (NO), belong to a class of endogenously ...
Gutierrez Jose J Department of Neurology, College of Physicians and Surgeons, Columbia University Medical Center New York, NY, - - 2014
Mechanisms underlying brain arterial remodeling are uncertain. We tested the hypothesis that arterial size and location are important determinants of arterial characteristics. We collected large and penetrating brain arteries from cadavers with and without HIV. Morphometric characterization was obtained from digital images using color-based thresholding. The association of arterial size ...
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