Search Results
Results 551 - 600 of 1248
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Tierney T S - - 2001
OBJECTIVE: Despite improvements in the care of patients with aneurysmal subarachnoid hemorrhage, delayed cerebral vasospasm remains a major cause of morbidity and death. There is now evidence that a decrease in the local availability of nitric oxide (NO) plays a role in delayed cerebral vasospasm. We evaluated a controlled-release polymer ...
McDonald Colin T. - - 2001
Patients presenting with subarachnoid hemorrhage from aneurysmal rupture benefit from early repair of the aneurysm. Recent advances in endovascular technology now allow informed discussion of the merits of surgical versus endovascular repair of the aneurysm. Patients need close observation in an intensive-care unit following subarachnoid hemorrhage to diagnose and treat ...
Colby T V - - 2001
The pathologist's approach to pulmonary hemorrhage is outlined. Most cases fall into those examples of pulmonary hemorrhage caused by localized sites of bleeding, and those examples that fall within the spectrum of diffuse alveolar hemorrhage. The histologic evaluation of pulmonary hemorrhage is outlined including assessment of fresh hemorrhage in alveolar ...
Ohkuma H - - 2001
The aim of this study was to investigate whether vascular remodeling occurs during cerebral vasospasm after subarachnoid hemorrhage (SAH). Beta-actin mRNA expression and structural change of its 3' untranslated region (UTR) which are considered a non-specific marker for vascular remodeling, were examined by Northern analysis and polymerase chain reaction analysis ...
Carhuapoma J R - - 2001
BACKGROUND: Microcatheter-guided intra-arterial (IA) papaverine infusion in conjunction with balloon angioplasty is an available therapy for patients with symptomatic vasospasm after subarachnoid hemorrhage (SAH) that is refractory to hypertensive, hypervolemic therapy. However, side effects and complications have been reported in association with its use. CASE DESCRIPTION: We report on a ...
Ohba S - - 2001
We report a case of a falcotentorial meningioma accompanied by hematoma in the temporal lobe. A healthy 51 year-old-female with no history of hypertension presented with sudden onset of consciousness disturbance and right hemiparesis. Computed tomography revealed a hematoma 5.5 cm in diameter surrounded by thick edematous brain in the ...
Takahashi M - - 2001
We describe a 72-year-old woman with hypertension who developed acute neurogenic pulmonary edema and giant negative T waves on electrocardiography (ECG) due to subarachnoid hemorrhage. The patient was alert and complained of precordial chest discomfort, dyspnea and shoulder stiffness. Echocardiography demonstrated normal left ventricle contraction with hypertrophy. Computed tomography (CT) ...
Sarkar P K - - 2001
Spontaneous subarachnoid haemorrhage (SAH) due to ruptured saccular aneurysm is the fourth most frequent cerebrovascular disorder following atherosclerosis, embolism, and primary intracerebral haemorrhage (1). SAH is a common and often devastating condition, which is a significant cause of world-wide morbidity and mortality (2). The aim of this article is to ...
Zhang Z D - - 2001
BACKGROUND AND PURPOSE: We studied in monkeys why vasospasm resolves after subarachnoid hemorrhage (SAH). METHODS: Monkeys underwent angiography and right (n=17) or bilateral (n=8) SAH. Animals with bilateral SAH underwent angiography 1, 3, 5, and 7 days later. Animals with right SAH underwent angiography 7 days later. The clot was ...
Yanaka Kiyoyuki - - 2001
The delayed cerebral vasoconstriction known as cerebral vasospasm remains a significant cause of permanent neurological deficit and death following aneurysmal subarachnoid hemorrhage despite the best current medical therapies. The mechanism of cerebral vasospasm remains unknown. Several new drugs have been tested in animal models of subarachnoid hemorrhage, and these experimental ...
Kilaru P K - - 2001
Pulmonary hemorrhage following percutaneous coronary intervention is a very rare complication that has been previously reported in association with abciximab and tirofiban, but not with clopidogrel. We report the case of a 56-year-old man who developed diffuse alveolar hemorrhage after receiving clopidogrel for placement of a coronary stent. Since clopidogrel ...
Srinivasan J - - 2001
Moyamoya disease is a rare entity that results in progressive occlusion of the arteries of the circle of Willis. In adults, this most commonly leads to intraventricular hemorrhage and less frequently to symptoms of ischemia. Without treatment, there is progressive deterioration of neurologic function and re-hemorrhage. Direct superficial temporal artery ...
Lagares A - - 2001
OBJECTIVE AND IMPORTANCE: Massive intraventricular hemorrhage due to aneurysmal rupture is associated with a dismal prognosis. An intraventricular clot causing fourth ventricle dilation can cause compression to the brainstem similar to other posterior fossa masses such as cerebellar hemorrhage or infarction. The presence of fourth ventricle dilation carries a very ...
Kalra S S Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA. - - 2001
The use of abciximab, a chimeric monoclonal antibody Fab fragment specific for platelet glycoprotein IIb/IIIa receptors, is associated with improved outcome after angioplasty and stent placement. Major complications include bleeding, but pulmonary hemorrhage has been reported rarely. This study was done to identify patients with pulmonary hemorrhage following abciximab infusion ...
Nomura S - - 2001
A rare case of childhood subarachnoid hemorrhage (SAH) is reported. A 5-year-old boy presented with SAH. A cerebral angiogram showed obstruction of the first segment of the left anterior cerebral artery (A1). The A1 was surgically trapped to prevent rebleeding. Proliferation of myofibroblasts was revealed in the intima of the ...
Harrington J F JF - - 2001
OBJECTIVE AND IMPORTANCE: Paramedial approaches to far lateral discs at the L5-S1 space joint have advantages but may also bring the surgical space closer to large branch arteries of the internal iliac artery. I report incursion into an iliolumbar artery that required laparotomy to control hemorrhage. Surgeons performing extraforaminal disc ...
Haralanov L - - 2001
Detection of early circulatory and electrophysiologic changes due to vasospasm (VS) after subarachnoid hemorrhage (SAH) is a necessity for in-time and adequate therapeutic management. The aim of the present case report is to describe and demonstrate the results of transcranial Doppler (TCD) monitoring and brainstem auditory evoked potentials (BAEPs) examination, ...
Keene J J - - 2001
Innominate artery rupture is a rare, but usually fatal, complication of tracheal stenosis. Although prevention is key, prompt, appropriate intervention can be life saving. Hemorrhage and airway must simultaneously be controlled. Most deaths occur from exsanguination with adequate ventilation before surgical repair can be effected. In the ideal situation, the ...
Nussbaum E S - - 2001
Despite decades of aggressive efforts to improve the outcome from ruptured intracranial aneurysms, subarachnoid hemorrhage (SAH) still carries high morbidity and mortality rates. Aneurysmal subarachnoid hemorrhage continues to be a frightening and poorly understood condition, contributing to delays in diagnosis and compromising patient care. Prompt diagnosis followed by aggressive treatment ...
Arakawa Y - - 2001
OBJECTIVE: The intra-arterial infusion of papaverine has been used for dilation of spastic cerebral vessels after aneurysmal subarachnoid hemorrhage, although its efficacy is controversial. Milrinone is an inotropic drug that dilates vessels by phosphodiesterase inhibition in a mechanism similar to that of papaverine. We examined the effects of intra-arterial and ...
Gutiérrez O O Service of Interventional Radiology, Heart and Radiology Institute; University of São Paulo, Brazil - - - 2001
Arterial cerebral vasospasm in different pathological conditions other than subarachnoid haemorrhage (SAH) caused by ruptured aneurysm is uncommon. The haemodynamicsclinical consequences of such conditions makes a quick diagnosis, vital to choose the best therapeutic strategy. A 55-year-old woman presented chronic headache. Computed tomography scan revealed an image suggesting carotid aneurysm ...
Cross D T DT - - 2001
BACKGROUND AND PURPOSE: Fibrinolysis with local intraarterial urokinase infusion for basilar artery thrombosis has been associated with a low rate of spontaneous symptomatic cerebral hemorrhage, even when patients have been treated late in the course of symptoms. Because urokinase is presently unavailable in the United States, this study was undertaken ...
Patel M C - - 2001
BACKGROUND AND PURPOSE: Brain arteriovenous malformations (AVMs) occur in approximately 0.14% of the population. The most common presentations are hemorrhage (50%) and seizures (25%). Although they are congenital abnormalities, their angioarchitecture may vary over time. A rare but well-recognized phenomenon of AVMs is that of spontaneous obliteration. It is not ...
Treggiari-Venzi M M - - 2001
Cerebral vasospasm remains a devastating medical complication of aneurysmal subarachnoid hemorrhage (SAH). It is associated with high morbidity and mortality rates, even after the aneurysm has been secured surgically or radiologically. A great deal of experimental and clinical research has been conducted in an effort to find ways to prevent ...
Aichholzer M - - 2001
The authors present an unusual complication of a recurrent chiasmal/hypothalamic pilocytic astrocytoma. From his second year of life onwards, the patient was repeatedly operated on and also underwent external radiation therapy (54 Gy total dose) 1 month after the first subtotal tumor resection. Nine years after irradiation, the patient was ...
Asherson R A - - 2001
Pulmonary involvement in the primary antiphospholipid syndrome (PAPS) has generally been on the basis of thromboembolism. We describe a patient with hemorrhagic alveolitis, a life-threatening complication that must also be considered. The patient was a 63-year-old Caucasian man who had a past history of recurrent deep vein thromboses as well ...
Clark J F - - 2001
BACKGROUND: The cerebrospinal fluid (CSF) from subarachnoid haemorrhage (SAH) patients with cerebral vasospasm stimulates vasoconstriction and oxygen consumption in the porcine carotid artery in vitro. Stimulation of oxygen consumption has been used as an in vitro model of vasospasm to assess the relative benefits of nimodipine, isoprenaline, dobutamine, and sodium ...
Kuwahara S - - 2001
A 67-year-old female with a history of hypertension and cerebral infarction presented with subarachnoid hemorrhage (SAH) (Hunt and Kosnik grade 4). Brain computed tomography (CT) revealed a clot dominantly on the right (Fisher's classification Group 4). Cerebral angiography showed funnel-shaped widenings at the origins of the bilateral posterior communicating arteries. ...
Aihara Y - - 2001
BACKGROUND AND PURPOSE: The possible role of inflammatory reaction of the cerebral artery in the pathogenesis of cerebral vasospasm has been noted in recent studies. We quantitatively measured the levels of expression of genes related to inflammation in the spastic artery in a canine double-hemorrhage model. METHODS: Twenty dogs were ...
Jarus-Dziedzic K - - 2001
The relationship between changes of blood flow velocities in cerebral arteries measured by transcranial Doppler ultrasonography and aneurysm localization was investigated in a group of 165 patients after aneurysmal subarachnoid hemorrhage (SAH). Mean blood flow velocities (MFV) in the middle cerebral artery (MCA) and anterior cerebral artery (ACA) were registered. ...
Iglesias S - - 2000
OBJECTIVE: To describe a new familial association of late-onset dementia, patchy leukoencephalopathy, intracerebral hemorrhages, bilateral occipital calcifications (BOC), and external carotid artery dysplasia (ECAD). METHODS: At age 62, the proband, who was of Spanish descent, had left temporal hemorrhage in a background of progressive mental deterioration. Neuroimaging revealed fine tram-line ...
Monzani V - - 2000
Acute global amnesia may be due to several causes, such as transient global amnesia (TGA), acute drug-related confusional state, toxic substances, metabolic abnormalities, infective diseases, cerebral tumours, cerebrovascular accidents, subarachnoid haemorrhage and epilepsy. In particular both TGA and subarachnoid haemorrhage may be precipitated by sexual activity; by contrast the two ...
Wanke I - - 2000
We describe two patients with subarachnoid haemorrhage due to a ruptured intracranial aneurysm and severe symptomatic vasospasm. The aneurysm was occluded with detachable coils followed by intra-arterial infusion of papaverine to treat vasospasm as an one-stage procedure. There was significant resolution of the vasospasm. The long-term clinical outcome in one ...
Tsutsumi M - - 2000
A 45-year-old male presented with lateral medullary infarction. Cerebral angiography showed dissecting aneurysm as pearl and string sign in the right vertebral artery (VA). Conservative treatment was administered with antiplatelet agent. However, subarachnoid hemorrhage occurred 2 days after admission, inducing coma. Intraaneurysmal embolization and proximal occlusion of the right VA ...
Bunai Y - - 2000
Two cases of traumatic rupture of the basilar artery are reported. In the first case, severe basal subarachnoid hemorrhage (SAH) due to a complete transverse tear of the basilar artery was observed in a 53-year-old restrained male driver who was involved in a head-on collision while intoxicated and drowsy. He ...
Morrish W - - 2000
BACKGROUND AND PURPOSE: The transluminal angioplasty and stenting procedure has been recently advocated as a potential alternative to surgical endarterectomy for the treatment of severe extracranial carotid stenosis. This study assesses the incidence and significance of intracranial hemorrhage occurring after this procedure. METHODS: We retrospectively reviewed 104 carotid arteries (96 ...
Mizutani T - - 2000
OBJECT: For the past 130 years, it has been believed that hypertension-induced cerebral hemorrhages are the result of ruptures of microaneurysms or ruptures of arteries that have degenerative changes. The majority of previous investigations have focused on autopsied brain. In this study, the authors attempted to verify the cause of ...
Kajitani M - - 2000
Hemorrhagic complications have been reported after repeated exposures to bovine thrombin products due to development of factor V inhibitors. Our patient underwent emergency repair of acute aortic dissection and coronary artery bypass grafting. The patient developed leg wound infection at the saphenous vein harvest site, which was debrided and left ...
Crum B A - - 2000
BACKGROUND: The location of parenchymal hemorrhage often indicates the site of the aneurysm in subarachnoid hemorrhage. CASE REPORT: We present the first case of a thalamus hematoma associated with a small ruptured (P1) posterior cerebral artery aneurysm with rapid washout of subarachnoid blood mimicking a ganglionic hemorrhage. CONCLUSION: Thalamus hematoma ...
Schievink W I WI Cedars-Sinai Neurosurgical Institute, Los Angeles, Calif 90048, USA. - - 2000
Pretruncal (perimesencephalic) nonaneurysmal subarachnoid hemorrhage (SAH) is a benign variant of SAH. Although angiography fails to show a source of the hemorrhage, mild basilar artery narrowing may be observed. The cause of pretruncal nonaneurysmal SAH has not been established. Recent imaging studies have demonstrated that the center of this type ...
Toyoda K - - 2000
We sought to determine whether adenovirus-mediated gene transfer in vivo of calcitonin gene-related peptide (CGRP), a potent vasodilator, ameliorates cerebral vasoconstriction after experimental subarachnoid hemorrhage (SAH). Arterial blood was injected into the cisterna magna of rabbits to mimic SAH 5 days after injection of AdRSVCGRP (8x10(8) pfu), AdRSVbetagal (control virus), ...
Stapf C - - 2000
BACKGROUND AND PURPOSE: We sought to assess the relative risk of hemorrhagic presentation of brain arteriovenous malformations (AVMs) located in the arterial borderzone territories. METHODS: The 464 consecutive, prospectively enrolled patients from the New York AVM Databank were analyzed. AVM borderzone location was coded positive when the malformation was supplied ...
Tanoi Y - - 2000
To identify arterial changes that are characteristic of Binswanger's encephalopathy (BE), we analyzed cerebral subarachnoid and medullary arteries of seven BE autopsy specimens by reconstruction of stained serial sections. We also noted the frequency of intimal fibrosis with or without atheroma of the subarachnoid arteries, and determined the medial thickness ...
Lam J M - - 2000
OBJECTIVE: To assess whether the development of delayed ischemic deficits (DIDs) after aneurysmal subarachnoid hemorrhage can be predicted using transcranial Doppler ultrasonography and the transient hyperemic response test (THRT). METHODS: An increase in the middle cerebral artery peak flow velocity (FV) of more than 9% of baseline values after 5 ...
Quan L - - 2000
BACKGROUND AND PURPOSE: We postulated that some abnormalities in cerebrovascular function after subarachnoid hemorrhage (SAH) may involve underlying alterations in K(+) channel function. Thus, using pharmacological inhibitors, we assessed the influence of SAH on function of 2 types of K(+) channel in regulation of basilar artery diameter in vivo and ...
Jansen F E - - 2000
We report an infant whose clinical condition deteriorated acutely at 1 month of age because of a subarachnoid hemorrhage with an intracerebellar hematoma. Computed tomographic angiography revealed an aneurysm of the left posterior inferior cerebellar artery. Because of the critical condition of the child and her very young age, the ...
Jośko J - - 2000
The aim of the study was to quantify cerebral vasospasm in rats after subarachnoid hemorrhage (SAH) by morphometric examination of basilar artery and to evaluate the influence of Phosphoramidon on basilar artery constriction. The rat cisterna magna (CM) was cannulated and after 7 days SAH was developed by administration of ...
Karibe H - - 2000
OBJECTIVE: Intraoperative mild hypothermia has been used during cerebral aneurysm surgery to reduce ischemic injury induced by temporary vessel occlusion and brain retraction. However, the clinical effects on cerebral hemodynamics are unclear. This study investigated the effects of intraoperative mild hypothermia on cerebral blood flow (CBF) after surgery to treat ...
Borsody M K - - 2000
BACKGROUND AND PURPOSE: We observed that the second application of cerebrospinal fluid (CSF) from subarachnoid hemorrhage (SAH) patients onto cerebral arterial segments in vitro produces a greater contraction than does the initial application. It was hypothesized that the difference between the first and second applications of SAH CSF was due ...
Gleckman A M - - 2000
We report a case of a two-month-old boy who became unresponsive in the sole custody of his father. Resuscitation efforts on route to the hospital were able to restore the infant's heart beat. However, neurologic function never recovered. Autopsy revealed massive cerebral edema, recent subdural, and subarachnoid hemorrhages, bilateral retinal ...
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