Search Results
Results 51 - 100 of 3473
1 2 3 4 5 6 7 8 9 10 >
White Christopher J - - 2011
Chronic mesenteric ischemia (CMI) is the most common vascular disorder involving the intestines, however it is unusual in clinical practice. The redundancy of the visceral circulation with multiple interconnections between the superior mesenteric artery (SMA) and the inferior mesenteric artery (IMA) is the most likely explanation for the infrequent occurrence ...
Chang Il Soo - - 2011
PURPOSE: To evaluate the influence of heavy calcification on iliac arterial stent expansion and patency and to define the spatial relationship between the stent and heavy calcifications on computed tomography (CT). MATERIALS AND METHODS: Thirteen patients (11 men, two women; mean age, 66.5 y) with 14 heavily calcified iliac arteries ...
Gállego Culleré Jaime - - 2011
During the past few years, the branch syndromes have been ascribed to pontine lesions, and the development of neuroimaging techniques has renewed the interest in exploring their clinical-radiological correlation. Brain imaging via MRI has helped in the diagnosis and accurate localization of lesions. From classic studies it is now accepted ...
Hayreh Sohan Singh - - 2011
The initial section deals with basic sciences; among the various topics briefly discussed are the anatomical features of ophthalmic, central retinal and cilioretinal arteries which may play a role in acute retinal arterial ischemic disorders. Crucial information required in the management of central retinal artery occlusion (CRAO) is the length ...
Ibáñez-Contreras Alejandra - - 2011
In subclavian steal phenomenon (SSP), the subclavian artery develops a stenoocclusive disease proximal to the origin of the vertebral artery, leading to pronounced hemodynamic changes such as arterial flow reversal. Although SSP is a common echographic finding in humans, the phenomenon occurs only rarely in animals; consequently its physiologic features ...
Ryu Chang-Woo - - 2011
The occurrence of a vascular perforation during an endovascular procedure is an unexpected and feared complication which can be fatal. However, the incidence, risk or the mechanism of vascular perforation which can occur in the endovascular management of aneurysms remains unclear. The purpose of the present study was to evaluate ...
Eid N - - 2011
Anomalous branching pattern of the left external carotid artery (ECA) was detected in an old man. The ECA branched into high submental artery and large transverse facial artery ending as angular artery compensating for concurrent agenesis of ipsilateral facial artery. The lingual artery gave direct branch to the submandibular gland, ...
Calviere L - - 2011
Unruptured intracranial artery aneurysms (IAs) can be revealed by cerebral ischemia. Little is known on the clinical course and outcome of patients with this condition. We report our findings in a consecutive series of 15 such patients. We retrospectively analyzed patients with ischemic stroke (IS) or transient ischemic attack (TIA), ...
Guinn Nicole R - - 2011
BRIEF SUMMARY: We describe the use of adenosine-induced cardiac arrest to facilitate intracranial aneurysm clip ligation. Cerebral aneurysms are highly variable which may result in difficult surgical exposure for clip ligation in select cases. Secure clip placement is often not feasible without temporarily decompressing the aneurysm. This can be accomplished ...
Thiene Gaetano - - 2011
In recent years, there has been a revival in the use of bioprosthetic valves as aortic substitutes. For example, during 2008 in Germany, among 12,397 patients who underwent isolated aortic valve procedures, 78% received a biological prosthesis and 21% a mechanical valve, while only 1% underwent valve repair. However, whilst ...
Arntzen K A - - 2011
Carotid artery atherosclerosis is a major risk factor for stroke and subsequent cognitive impairment. Recent studies indicate that carotid atherosclerosis without clinical stroke may also be an independent risk factor for cognitive decline and dementia. Ultrasonography is an easily assessable and non-invasive method to measure different stages of the carotid ...
Tomura Noriaki - - 2011
The use of 3-dimensional computed tomography angiography (3D-CTA) for clipped aneurysms is limited. Usefulness of 3D-CTA with elimination of bone and clips was evaluated in patients with clipped cerebral aneurysms. Forty-three clipped cerebral aneurysms were included. As review of digital subtraction angiography after surgery is the current gold standard, the ...
McNulty Maggie L - - 2011
The natural history and optimal treatment for unruptured cerebral aneurysm and arteriovenous malformations (AVMs) remains unknown. The prevalence of intracranial aneurysms is estimated to be between 1% and 5%. The annual risk of rupture for small aneurysms in the anterior circulation is low. Factors that are associated with increased risk ...
Tormenti Matthew J - - 2011
The authors report a case of a posterior inferior cerebellar artery origin aneurysm causing brainstem compression and swallowing difficulty. The patient had an ipsilateral microvascular decompression of cranial nerve VII for hemifacial spasm 27 years prior to the discovery of the aneurysm. The aneurysm was successfully treated endovascularly. A discussion ...
Weber Howard S - - 2011
We describe the use of multiple Amplatzer vascular plugs which were intentionally placed so as to isolate a large azygous vein aneurysm with intraluminal thrombosis, which had resulted in a previous pulmonary embolus. This technique avoided the need for an invasive thoracotomy and aneurysm resection or attempting to directly fill ...
Chan Annie - - 2011
Macular edema is a common cause of visual loss in patients with retinal vein occlusions. Ozurdex(®), a dexamethasone intravitreal implant, has been shown in randomized controlled trials to reduce macular edema and improve visual acuity in patients with either branch retinal vein occlusions or central retinal vein occlusions. It was ...
Jafri Syeda S Department of Medicine, Addenbrooke's Hospital, Cambridge, - - 2011
Although hypoxic pulmonary vasoconstriction is a well-recognized physiological phenomenon it is unusual to observe and assess its efficiency in clinical practice. Here, we report the case of a 50-year-old female who presented with unilateral incomplete bronchial occlusion due to a carcinoid tumor involving the left main bronchus in the absence ...
Powers Ciaran J - - 2010
Transient adenosine-induced asystole is a reliable method for producing a short period of relative hypotension during surgical and endovascular procedures. Although the technique has been described in the endovascular treatment of brain arteriovenous malformations, aortic aneurysms, and posterior circulation cerebral aneurysms, little description of its use in anterior circulation aneurysms ...
Korja Miikka - - 2010
An intracranial posterior circulation revascularization procedure in the form of a side-to-side in situ posterior inferior cerebellar artery (PICA)-PICA bypass operation was introduced in 1991. This elegant and apparently low-risk operation is performed infrequently. Thus, the operative nuances used in this procedure have not been well reported, limiting the scope ...
Karam L - - 2010
Unlike posttraumatic temporal artery aneurysm, spontaneous temporal artery aneurysm is an exceptional finding. We report the case of a 34-year-old woman with no history of previous trauma who presented a progressively enlarging right temporal lump. A CT scan revealed a 1.6cm diameter aneurysm arising from the superficial temporal artery. The ...
Sampath Raghuram - - 2010
Fusiform anterior communicating artery (ACoA) aneurysms (ACoAAs) are rare, and a series of these aneurysms has not been reported. Large fusiform ACoAA are easily identifiable, whereas smaller ones can coexist with a saccular component. To provide a clear-cut definition, report the incidence of these aneurysms, present a series with follow-up ...
Szelényi Andrea - - 2011
The incidence of ischemia might be increased in the surgical repair of atherosclerotic unruptured aneurysms compared to non-atherosclerotic aneurysms. The atherosclerotic wall might increase the occurrence of thrombembolic events or its rigidity might endanger the occlusion of perforators within the aneurysm vicinity. 87 patients (53 patients without and 34 patients ...
Cebral J R - - 2011
Flow-diverting approaches to intracranial aneurysm treatment had many promising early results, but recent apparently successful treatments have been complicated by later aneurysm hemorrhage. We analyzed 7 cases of aneurysms treated with flow diversion to explore the possible rupture mechanisms. CFD analysis of pre- and posttreatment conditions was performed on 3 ...
Kulcsár Z - - 2011
FD technology enables reconstructive repair of otherwise difficult-to-treat intracranial aneurysms. These stentlike devices may induce progressive aneurysm thrombosis without additional implants and may initiate complete reverse vessel remodeling. The associated vascular biologic processes are as yet only partially understood. From 12 different centers, 13 cases of delayed postprocedural aneurysm rupture ...
Matsumoto Jun - - 2011
A 51-year-old hypertensive man presented with subarachnoid haemorrhage. He had a past history of cerebellar infarction due to occlusion of the right posterior inferior cerebellar artery (PICA) 4 years earlier. Digital subtraction angiography showed a saccular aneurysm above an arterial loop extending from the vertebral artery to the distal part of ...
Suh S H - - 2011
AICA aneurysms are rare and a challenge to treat surgically. We present our experience of the angiographic results and the clinical outcomes for 9 AICA aneurysms treated by EVT. Between 1997 and 2009, EVT was attempted for 9 AICA aneurysms. Six patients presented with SAH, and 3 aneurysms were found ...
Cebral J R JR Department of Computational and Data Sciences, Center for Computational Fluid Dynamics, George Mason University, Fairfax, Virginia 22030, USA. - - 2011
Hemodynamic factors are thought to play an important role in the initiation, growth, and rupture of cerebral aneurysms. This report describes a study of the associations between qualitative intra-aneurysmal hemodynamics and the rupture of cerebral aneurysms. Two hundred ten consecutive aneurysms were analyzed by using patient-specific CFD simulations under pulsatile ...
Rose Jessica F - - 2011
Marfan syndrome is an autosomally inherited disorder affecting the synthesis of connective tissues. Vascular manifestations of Marfan syndrome include aneurysmal dilatation of the aortic root, aortic dissection, and rupture. Peripheral aneurysms are mostly reported in the iliac, femoral, and subclavian arteries. We report a Marfan patient with a ruptured axillary ...
Augsburger L - - 2011
Intracranial aneurysms may be treated by flow diverters, alternatively to stents and coils combination. Numerical simulation allows the assessment of the complex nature of aneurismal flow. Endovascular devices present a rather dense and fine strut network, increasing the complexity of the meshing. We propose an alternative strategy, which is based ...
Shojima Masaaki - - 2010
The development of cerebral aneurysms is related to hemodynamic stress. To elucidate the role of shear stress in the blister formation of cerebral aneurysms. Among 82 aneurysms detected during catheter-based 3D rotational angiography (3DRA), 4 aneurysms enlarged with blister formation during a mean follow-up period of 10.1 month. Three of ...
Zhang Long-Jiang - - 2010
To evaluate the diagnostic accuracy of dual-energy computed tomographic angiography (DE-CTA) in the detection of intracranial aneurysms and to determine whether DE-CTA provides adequate information to guide treatment choice. Eighty patients (31 men and 49 women; mean [SD] ages of 52 [9] years) with spontaneous subarachnoid hemorrhage underwent DE-CTA. The ...
Elhammady Mohamed Samy - - 2010
Optimal treatment of intracranial aneurysms involves complete occlusion of the aneurysm with preservation of the parent artery and all of its branches. Attempts to occlude the aneurysm and preserve the parent artery may be associated with a higher level of risk than parent vessel occlusion or trapping. To evaluate our ...
Pierot Laurent - - 2010
The strategy of treatment of small unruptured intracranial aneurysms is complex because of their presumably low risk of rupture. A precise knowledge of the perioperative complications in this specific subgroup is mandatory. The purpose of this study was to compare the results of the endovascular treatment of aneurysms ≤ 3 ...
Choi Chan-Young - - 2011
Kissing aneurysms, a particular type of multiple aneurysm are rare. A kissing aneurysms was identified at the distal anterior cerebral artery (ACA) in a 59-year-old male patient diagnosed with subarachnoid hemorrhage (SAH). The use of three-dimensional intracranial CT angiograms revealed that kissing aneurysms (that is, an aneurysm with a bilateral ...
Päsler Dennis - - 2011
Aneurysms of the anterior inferior cerebellar artery (AICA) are a rare entity. Purely intrameatal aneurysms are even rarer. The authors report an intrameatal thrombosed AICA aneurysm mimicking a vestibular schwannoma that was treated by resection and end-to-end anastomosis. This 22-year-old man presented with acute hearing loss, vertigo, and moderate facial ...
Sherif C - - 2011
The choice of the experimental aneurysm model is essential for valid embolization-device evaluations. So far, the use of the rabbit venous pouch arterial bifurcation aneurysm model has been limited by demanding microsurgery, low aneurysm patency rates, and high mortality. This study aimed to facilitate microsurgery and to reduce mortality by ...
Eftekhar Behzad - - 2011
We retrospectively investigated preoperative variables contributing to adverse surgical outcome for repair of unruptured posterior circulation aneurysms on data collected prospectively between October 1989 and March 2010. Putative risk factors including age, sex, smoking status, positive family history, modified Rankin Score prior to the surgery, size of the aneurysm, specific ...
Qiao Liang - - 2011
Generally speaking, the term "ophthalmic aneurysms" refers to carotid-ophthalmic aneurysms, which arise from the internal carotid artery (ICA) wall at or around the origin of the ophthalmic artery (OA). In contrast, aneurysms arising from the OA stem or its branches, separate from the ICA are called peripheral OA aneurysms (POAAs). ...
Ponce Francisco A - - 2011
Object The aim of this study was to clarify the surgical indications, risks, and long-term clinical outcomes associated with the use of deep hypothermic circulatory arrest for the surgical treatment of intracranial aneurysms. Methods The authors retrospectively reviewed 105 deep hypothermic circulatory arrest procedures performed in 103 patients (64 females ...
Cui Hua - - 2011
The outcome of surgical treatment of intracranial aneurysms may be influenced by incomplete exclusion of the aneurysm or stenosis of the parent vessels. The goal of this study was to evaluate the usefulness and reliability of intraoperative microvascular Doppler (IMD) in guiding optimal clip placement in aneurysm surgery. We conducted ...
van Asch Charlotte J J - - 2010
BACKGROUND AND PURPOSE: Intracerebral hematomas (ICHs) often increase in size in the initial hours. It is unknown whether expansion of ICHs after aneurysmal rupture in the acute phase is always a sign of rerupture of the original aneurysm. METHODS: We included patients with an ICH from a ruptured aneurysm who ...
Currie Stuart - - 2011
Subarachnoid haemorrhage remains a major cause of morbidity and mortality throughout the world. Of those suffering the condition, 15% are known to die before they reach hospital and half of all patients die within 1 month of presentation. Of those patients who survive the initial 30 days, just under half are ...
Miyamoto Susumu - - 2011
Object The authors evaluated the efficacy of a new flow reduction strategy for giant partially thrombosed upper basilar artery (BA) aneurysms, for which proximal parent artery occlusion is not always effective. Methods Eight consecutive patients with severely symptomatic, partially thrombosed, giant upper BA aneurysms were treated with a tailored flow ...
Hassan Tamer - - 2011
Parent vessel plays an important role in aneurysm formation and rupture. The diameter of either the A1 arteries is the peculiar key controlling the flow of the anterior communicating artery (ACOMA) aneurysms (ANs). The purpose is to study the effect of parent vessel dominancy, that is, the diameter of the ...
Shimamura Junichi - - 2011
Abstract  A coronary artery aneurysm (CAA), the etiology and treatment of which are still not fully understood, is uncommonly encountered. A giant CAA is extremely rare and only a limited number of cases have been reported. We report the case of a 37-year-old female with a giant right coronary artery ...
Sugimoto Ai - - 2011
In this article, we report a rare case of rectal obstruction caused by bilateral internal iliac artery aneurysms that required open surgical repair. A 73-year-old man was admitted to our hospital complaining of abdominal pain and persistent constipation for >1 month. Computed tomography demonstrated bilateral internal iliac artery aneurysms, 5.0 ...
Kamijo Koji - - 2010
OBJECT: Fragile aneurysm walls and poorly defined necks render the surgical treatment of blood blister–like aneurysms (BBAs) located at nonbranching sites of the supraclinoid internal carotid artery extremely challenging. Such aneurysms have a remarkable tendency to rupture during surgery, especially during the acute period. The authors describe the clinical course ...
Zaraca Francesco - - 2010
This review evaluates the results of our 18-year experience with surgical treatment of popliteal artery aneurysms (PAAs), examining the effects of the variables of clinical presentations, surgical technique, graft material, and runoff on operative results in the management of popliteal aneurysms. We reviewed 49 PAAs consecutively repaired in 35 patients. ...
D'Andrea V - - 2010
English version Summary: Angiomegaly and arterial aneurysms. V. D'Andrea, V. Cantisani, A. Catania, A. Todini, F. Stio, F.M. Di Matteo, C. Di Marco, R. Greco, M. Di Certo, E. Guaitoli, E. De Antoni Angiomegaly is characterized by an alteration in the elastic component of arterial and venous vessels determining their ...
Lee C-C - - 2010
Aneurysms located at non-branching sites, protruding from the dorsal wall of the supraclinoid internal carotid artery (ICA) with rapid configurational changes, were retrospectively reviewed in effort to identify and characterize these high-risk aneurysms. A total of 447 patients with 491 intracranial aneurysms were treated from March 2005 to August 2008, ...
1 2 3 4 5 6 7 8 9 10 >