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Results 451 - 500 of 3867
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Das Deepanjana - - 2012
The purpose of this study was to determine the relevance of S100A12 expression to human thoracic aortic aneurysms and type A thoracic aortic aneurysm dissection and to study mechanisms of S100A12-mediated dysfunction of aortic smooth muscle cells. Transgenic expression of proinflammatory S100A12 protein in murine aortic smooth muscle causes thoracic ...
Mozaffar Mohammad M Vascular Surgery Research Center, Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, - - 2012
Percutaneous vertebroplasty (PVP) with polymethylmethacrylate (PMMA) is a minimally invasive procedure that provides significant pain relief in a high percentage of patients with osteoporotic fractures. The complication rate of PVP is reported to be below 6%. This case illustrates, for the first time, an arterial PMMA embolus to the aorta ...
Pase Matthew P - - 2012
Uncovering modifiable predictors of cognitive decline and dementia is crucial for early detection and prevention. Although high mid-life brachial blood pressure is considered a risk factor for later-life cognitive impairment, other non-invasive indices of arterial health, closely associated with aging, may improve risk stratification. This review discusses the contribution of ...
Noh Tae-Soo - - 2012
PURPOSE: To investigate the effects of variable measurement methods on mean and maximum SUV ratios of (18)F-FDG uptake in carotid arteries. METHODS: (18)F-FDG PET/CT images of 74 subjects with carotid plaque were analyzed for mean and maximum target-to-background ratio (TBR) of uptake. Agreement was analyzed between TBR scores obtained using ...
Fang Yuqiang - - 2012
To investigate the stenotic coexistence among coronary, renal and extracranial arteries and check the predictive value of stenosis between these arteries in Chinese patients. The stenosis of three arteries was evaluated by angiography in 1,228 Chinese patients with clinically diagnosed coronary artery disease (CAD) or high CAD risk factors. Based ...
Taraboanta Catalin - - 2012
ABSTRACT: BACKGROUND: To evaluate the frequency of positive coronary arteries calcium (CAC) scores in a unique population of asymptomatic first degree relatives (FDRs) of patients with angiographically confirmed early onset of coronary artery disease (CAD) and to assess their association with carotid ultrasound findings and other cardiovascular risk factors. Method ...
Kumpf Matthias - - 2012
Although clinically silent in the majority of cases, enlarged bronchial arteries or systemic-to-pulmonary collateral arteries may complicate congenital heart disease in infants, causing significant left-to-right shunting with subsequent pulmonary congestion and respiratory compromise. So far, pulmonary haemorrhage, a well-known complication in older patients with cyanotic congenital heart disease, has not ...
Karth Peter - - 2012
A previously healthy 7-week-old boy developed bilateral central retinal artery occlusions in the presence of hyperhomocysteinemia and elevated serum methylmalonic acid and was found to have a transcobalamin receptor mutation. Retinal arterial occlusion is uncommon in young patients and typically prompts a systemic workup. In cases of atypical retinal arterial ...
Nicoll Rachel - - 2012
There is a significant relationship between the presence, extent and progression of coronary artery calcification (CAC) and cardiovascular (CV) events and mortality in both CV and renal patients and CAC scoring can provide improved predictive ability over risk factor scoring alone. There is also a close relationship between CAC presence ...
Stetson Nate D - - 2012
BACKGROUND:: and Importance: Contrast extravasation on computed tomography angiography (CTA) is becoming more common with increasing use of CTA for a myriad of intracranial vascular pathologies. This article describes the first two documented cases of contrast extravasation from a non-aneurysmal basilar artery source seen on CTA and discusses possible pathophysiologic ...
Crowley R Webster - - 2012
BACKGROUND:: Aneurysms of the Posterior Inferior Cerebellar Artery (PICA) are rare, comprising 0.5-3% of intracranial aneurysms. Because their anatomic location relative to the PICA origin is variable, several endovascular techniques are employed in their management. Objective: To evaluate and discuss endovascular techniques for the treatment of PICA aneurysms. METHODS:: We ...
Nugent Helen M - - 2012
High restenosis rates are a limitation of peripheral vascular interventions. Previous studies have shown that surgical implantation of a tissue-engineered endothelium onto the adventitia surface of injured vessels regulates vascular repair. In the present study, we developed a particulate formulation of tissue-engineered endothelium and a method to deliver the formulation ...
Zhang Lisheng - - 2012
Because vein graft neointimal hyperplasia engenders vein graft failure, and because most vein graft neointimal cells derive from outside the vein graft, we sought to determine whether vein graft neointimal hyperplasia is affected by activity of the CXC chemokine receptor-4 (CXCR4), which is important for bone marrow-derived cell migration. In ...
Sakakura Kenichi - - 2012
Catheter-induced aortocoronary dissection is a rare, but serious complication during diagnostic coronary catheterization or percutaneous coronary intervention (PCI). Immediate coronary artery stenting of the entry point is one of therapeutic options. However, PCI itself may worsen the dissection, because contrast injection has been reported to be a risk factor for ...
Schnell Oliver - - 2012
BACKGROUND: In this pilot study we compared advantages and drawbacks of near-infrared indocyanine green videoangiography (ICGVA) and intraoperative computed tomography (iCT) to investigate if these are complementary or competitive methods to acquire immediate information about blood vessels and potential critical impairment of brain perfusion during vascular neurosurgery. METHODS: A small ...
Joo Hyun-Chel - - 2012
BACKGROUND: Despite many large-volume studies on the use of bilateral internal thoracic artery (ITA) grafts, the benefits of a bilateral (B)ITA graft over a single (S)ITA graft for CABG remain controversial. This study compared midterm outcomes of BITA to SITA grafting in off-pump coronary artery bypass (OPCAB), focusing primarily on ...
Laskey Warren - - 2012
BACKGROUND: Exercise has been shown to beneficially alter arterial stiffness in selected clinical settings. However, the effects of a standardized exercise protocol - "cardiac rehabilitation (CR)" - on measures of arterial stiffness in patients with established coronary heart disease (CHD) has not been well studied. METHODS: Using applanation tonometry, we ...
Stoevesandt Dietrich - - 2012
Stroke and other thromboembolic events are mainly caused by emboli from heart, aorta and other arteries. In this paper we describe a group of 5 middle-aged patients suffering from emboli caused by large thrombi in the aorta. Since the development of giant thrombi under high flow conditions in the aorta ...
Hilgers Rob - - 2012
This study compared ex vivo relaxing responses to the naturally occurring human hormone estetrol (E(4)) vs. 17β-estradiol (E(2)) in 8 different vascular beds. Arteries were precontracted with either phenylephrine or serotonin, and cumulative concentration-response curves (CRC) to E(4) and E(2) (0.1 - 100 μmol l(-1)) were constructed. In all arteries ...
Saari Petri - - 2012
BackgroundShort proximal neck of an abdominal aortic aneurysm is associated with risk of treatment failure during abdominal aortic repair. Important side branches, such as renal arteries, cannot be covered without serious consequences.PurposeTo test the feasibility of preoperative fenestration of abdominal aortic stent grafts with a re-entry catheter and steerable sheath ...
Qin Yong-Lin - - 2012
OBJECTIVE: This study evaluated the risk factors of incomplete thrombosis in the false lumen after thoracic endovascular aortic repair (TEVAR) in patients with extensive acute type B aortic dissection. METHODS: This was a retrospective study at Zhongda Hospital and Henan Provincial People's Hospital, China. Between January 2005 and May 2008, ...
Ling Yi - - 2012
RationaleIncident pulmonary arterial hypertension was under-represented in most pulmonary hypertension registries and may have a different disease profile to prevalent disease. ObjectivesTo determine the characteristics and outcome of a purely incident, treatment naive cohort of idiopathic, heritable and anorexigen-associated pulmonary arterial hypertension and to determine the changes in presentations and ...
Yuki I - - 2012
SUMMARY:We report a novel swine model that allows direct visualization of cervical arteries undergoing mechanical thrombectomy. The model also facilitates evaluation of histologic changes observed in the arteries after treatment. Swine superficial cervical arteries, which are similar in size and branching pattern to the human middle cerebral artery, were surgically ...
Lundby Rigmor - - 2012
Purpose:The objectives of this study were to establish the prevalence of pulmonary artery dilatation in Marfan syndrome using modern radiological methods and to correlate the diameter of the vessel with aortic disease.Methods:Magnetic resonance or computed tomography imaging of the pulmonary artery and aorta was performed in 87 patients with proven ...
Guan Yinghui - - 2012
Total laparoscopic abdominal aortic aneurysm resection with tube graft interposition was performed in a 53-year-old woman diagnosed with an infrarenal abdominal aortic aneurysm. The operation was accomplished by a method using three trocars. The operation took 240 minutes. Blood loss was 600 mL. No complications occurred in 13 months of ...
Blockmans Daniel - - 2012
Performing a temporal artery biopsy is still the easiest way to diagnose giant cell arteritis. However, this biopsy is not always positive, even not in patients with prominent cranial symptoms. In these cases, positron emission tomography with 18-fluorodeoxyglucose as a tracer is a valid alternative. This nuclear technique has demonstrated ...
Watanabe Akiko - - 2012
We report two cases of ruptured pancreaticoduodenal arcade aneurysms that were successfully treated by embolotherapy. In these cases, contrast-enhanced computed tomography, sagittal reformed images, and angiography revealed celiac artery stenoses due to compression by the median arcuate ligament. Computed tomography also showed acute localized dissection in the distal celiac axis, ...
Yazici Pinar - - 2012
A 66-year old man was admitted to the hospital with chest and back pain and wide chest wall ecchymosis. His medical history revealed no chest trauma or resuscitation, but coronary angiography had been performed 20 days previously. Subacute type A aortic dissection was diagnosed. The likely cause of an ecchymosis ...
Incani Alexander - - 2012
This is the first reported case of an oesophageal fistula arising from a subclavian arterial graft. A 28 year-old woman presented with massive haematemesis in severe haemorrhagic shock, three months after surgery to detach and relocate an aberrant right subclavian artery. Acutely, she was haemodynamically unstable and required transfusion of ...
Ou Phalla - - 2012
BACKGROUND: The arterial switch operation (ASO) for transposition of the great arteries requires transfer of the coronary arteries from the aorta to the proximal pulmonary artery (neoaorta). This is complicated by variable coronary anatomy before transfer. In 8% to 10% of cases, there is evidence of late coronary stenosis and/or ...
Aralasmak Ayse - - 2012
We discuss MRI findings in patients with thoracic outlet syndrome (TOS). A total of 100 neurovascular bundles were evaluated in the interscalene triangle (IS), costoclavicular (CC), and retropectoralis minor (RPM) spaces. To exclude neurogenic abnormality, MRIs of the cervical spine and brachial plexus (BPL) were obtained in neutral. To exclude ...
Zhao Wen-Yuan - - 2012
BACKGROUND:: In transarterial embolization of anterior cranial fossa and tentorial dural arteriovenous fistula (DAVF), acute angulation of the feeding artery off the ICA may render stable distal catheterization and therefore successful transarterial treatment difficult. In some anatomical dispositions, following selection of the feeding artery, subsequent forward force may lead to ...
Yang Jianyun - - 2012
ABSTRACT: Relatively few cases of the ectopic implantation of an amputated thumb have been reported. The majority of ectopic sites are far from the original anatomic site, and anastomosis of the artery cannot be avoided in the secondary replantation surgery, which increases the failure rate. We conducted an anatomic study ...
Zini Chiara - - 2012
Celiac trunk injures are rare events, with high mortality rates and difficult management. Endovascular treatment may be considered to avoid bleeding. We report a case of severe bleeding in a 37-year-old man resulting from celiac trunk stretching after a motorcycle crash. Because direct celiac trunk catheterization was not possible, a ...
Beach Kirk W - - 2012
Background: Duplex ultrasound with Doppler velocimetry is widely used to evaluate the presence and severity of internal carotid artery stenosis; however, a variety of velocity criteria are currently being applied to classify stenosis severity. The purpose of this study is to compare published Doppler velocity measurements to the severity of ...
Liu Jian-Ren - - 2012
INTRODUCTION: In this study, we investigated whether pre-procedural imaging of LSAs would potentially be helpful for preventing LSAs from being covered. METHODS: We retrospectively evaluated the LSAs of 15 consecutive patients who underwent revascularization for symptomatic middle cerebral artery (MCA) stenosis. All patients underwent two- (2D) and three-dimensional (3D) digital ...
Piva Anna - - 2012
Abstract Objective. In liver cirrhosis, excessive splanchnic vasodilation is due to abnormal synthesis of endogenous vasodilators and to decreased sensitivity to vasoconstrictors. The role of mechanical stimuli such as wall shear stress (WSS) on splanchnic circulation remains unclear. The aim of this study was to assess the vasodilation induced by ...
Seo Woo-Keun - - 2012
Background Various medical comorbidities such as thrombocytopenia can be obstacles for managing patients with carotid artery disease.Patient We describe our experience with urgent carotid artery stenting for symptomatic carotid artery stenosis in a patient with severe thrombocytopenia. During the treatment, several issues such as mechanism of infarction in carotid artery ...
Yamashiro Satoshi - - 2012
Rapid restoration of flow into the true lumen and obliteration of a false lumen is considered the optimal approach to treating malperfusion syndrome due to acute aortic dissection. However, organ malperfusion can occasionally persist after proximal aortic graft replacement despite redirecting blood flow into the true lumen. A 35-year old ...
Ogilvy Christopher S - - 2012
Background: Traumatic intracranial pseudoaneurysms in children are typically the result of blunt or penetrating head injury. There are isolated reports of pseudoaneurysm as the result of intracranial aneurysm surgery in both adults and children. Treatment of these lesions, both surgically and endovascularly, can be complicated due to the known variability ...
Jonker Frederik H W - - 2012
BACKGROUND: A considerable number of patients with acute type B aortic dissection (ABAD) treated with medical management alone will exhibit aortic enlargement during follow-up, which could lead to aortic aneurysm and rupture. The purpose of this study was to investigate predictors of aortic expansion among ABAD patients enrolled in the ...
Casciani Emanuele - - 2012
A 47-year-old patient is presented who was admitted to the emergency department with complaints of right-sided flank pain and hypertension. His creatinine and glomerular filtration rate were 2.5 mg/dl and 37 ml/min respectively, so that contrast media administration was contraindicated. The unenhanced magnetic resonance angiography image obtained with 3D in-flow ...
Chang Ta-Yuan - - 2012
Exposure to environmental noise has been associated with hypertension, but the related mechanism of vascular structural changes is unclear. This repeated-measure study investigated the effects of noise exposure on the 24-h ambulatory vascular structural properties in 66 adults aged 18-32 years. Individual noise exposure and personal vascular parameters were measured ...
Nguyen Ha H - - 2012
BACKGROUND: Total scalp avulsion is a rare and devastating event. Microsurgical replantation is the sole method to achieve an ideal cosmetic outcome. In the literature, most studies have reviewed limited sample sizes. Most authors report better outcomes when a greater number of microvascular anastomoses are used. This strategy remains controversial, ...
Tate Quinn Q Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah 84108, - - 2013
The purpose of this work was to design and construct a multichannel receive-only radiofrequency coil for 3T magnetic resonance imaging of the human carotid artery and bifurcation with optimized signal-to-noise ratio (SNR) in the carotid vessels along the full extent of the neck. A neck phantom designed to match the ...
Akerem Khan Shamruz Khan - - 2012
We present a case of a 24-year-old woman who was diagnosed with quadricuspid aortic valve with ruptured sinus of Valsalva. Quadricuspid aortic valve is a rare congenital cardiac anomaly. The recognition of quadricuspid aortic valve has clinical significance as it causes aortic valve dysfunction, and is often associated with other ...
Corns Robert - - 2012
Object. Endovascular coiling is a common treatment for ruptured intracranial aneurysms. However, concerns have been raised over the durability of this treatment. The aim of this study was to establish the rate of recurrence and retreatment of coiled aneurysms treated in our unit. Methods. We performed a retrospective analysis of ...
Tse Kwong Ming - - 2012
OBJECTIVES: Cardiovascular diseases, such as atherosclerosis and aneurysm, are closely associated with haemodynamic factors that are governed by luminal geometry. The present work aimed to study the effect of geometrical variation of aging aortas on haemodynamics. METHODS: Six aged subjects with intricate geometrical features, such as bulging or twisted supra-aortic ...
Uemura Akihiro - - 2012
PURPOSE: The purpose of this study is to analyze the effect of morphological features on angiography after endovascular embolization for anterior communicating artery (AcoA) aneurysms. MATERIALS AND METHODS: We conducted a retrospective case review of 32 consecutive patients (19 males and 13 females) with AcoA aneurysms treated by endovascular coil ...
Takeuchi Satoru - - 2012
Coexistence of cerebral aneurysm and untreated craniopharyngioma is extremely rare. We present an extremely rare case of anterior cerebral artery dissecting aneurysm associated with untreated craniopharyngioma, and discuss the relationship between these two lesions.
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