Search Results
Results 501 - 550 of 1235
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Sheridan Meghan Kelly - - 2002
The objective of the study was to evaluate the ability of hemorrhage site and location as demonstrated on pelvic CT to predict the source of arterial hemorrhage in patients with traumatic pelvic fractures. CT scans of 104 consecutive patients who had sustained traumatic pelvic fracture and undergone emergent pelvic angiography ...
Kwan Aij-Lie - - 2002
Increasing evidence has implicated endothelin-1 (ET-1), a potent vasoconstrictive peptide, in the pathophysiology of cerebral vasospasm after subarachnoid haemorrhage (SAH). Endothelin-converting enzyme-1 (ECE-1), the protease involved in the final step of post-translational processing of ET-1, cleaves the inactive precursor big ET-1 at the Trp(21)-Val (22) peptide bond. In our previous ...
Menon David K - - 2002
Plasma endothelin (ET) is elevated in patients with vasospasm following subarachnoid haemorrhage (SAH). However, systemic levels provide no indication regarding local production in the brain, and late elevation may be a consequence rather than a cause of vasospasm. We measured arteriojugular (AJ) gradients of ET-1 in 17 patients over the ...
Longo M - - 2002
We report quantification of vasospasm following subarachnoid haemorrhage (SAH) and the effect of a new antivasospastic free radical scavenger (AVS) in rats, using an angiographic technique developed in our laboratory. We acquired single-exposure angiograms with mammographic equipment, using a 0.1 mm diameter focal spot and single-emulsion mammographic films. Contrast medium ...
Barnes Bryan - - 2002
The article reviews intracerebral hemorrhage caused by vascular malformations. The article also reviews incidence, prevalence, and distribution of parenchymal hemorrhage caused by aneurysms, arteriovenous malformations, and cavernous malformations are defined, and less common vascular lesions. There is a discussion of the role of cerebral vascular malformations in producing cerebral hemorrhage ...
Quick Christopher M - - 2002
Cerebral (brain) arteriovenous malformations (BAVMs) are a tangle of disorganized vessels that are a rare cause of hemorrhagic stroke in the general population. Although clinical presentation of hemorrhage may be related to the structure of BAVM vessels, there has been no systematic quantitative analysis of BAVM vessel morphology. Histological sections ...
Qureshi Adnan I - - 2002
We report the occurrence of fatal intracerebral hemorrhage associated with using a combination of antithrombotic agents, including abciximab, in patients undergoing neurointerventional procedures. Seven patients (average age 60, range 46 to 73 years) developed fatal intracerebral hemorrhages associated with neurointerventional procedures and the use of intravenous abciximab. The procedures included ...
Marshman Laurence A G - - 2002
It is currently unknown whether endovascular filament (EF) models of acute subarachnoid hemorrhage (SAH) introduce any 'side bias' upon cerebrovascular reactivity by virtue of unilateral carotid manipulation, unilateral EF insertion, or potentially ipsilateral site of intracranial rupture. In this study, three experimental groups of adult male wistar rats were used: ...
Calvo-Romero José Maria - - 2002
Churg-Strauss syndrome (CSS) is a systemic small-vessel vasculitis characterised by the presence of asthma and eosinophilia. Central nervous system involvement (cerebral infarctions or intracerebral haemorrhage) is rare in CSS. Spontaneous subarachnoid hemorrhage (SAH) has been described in other systemic vasculitides. SAH is exceptional in CSS. We present a 47-year-old woman ...
Zubkov Alexander Y - - 2002
This preliminary study was undertaken to explore the possible protective effect of caspase inhibitors Z-VDVAD-FMK and Z-DEVD-FMK in apoptosis and vasospasm in penetrating arteries during cerebral vasospasm. Experimental subarachnoid hemorrhage (SAH) was induced in 16 dogs by an intracisternal injection of autologous arterial blood (0.4 ml/kg) on Day 0 and ...
Romano Jose G - - 2002
OBJECTIVE: To determine the frequency and characteristics of microembolic signals (MES) in subarachnoid hemorrhage (SAH). METHODS: Twenty-three patients with aneurysmal SAH were monitored with transcranial Doppler ultrasonography for the presence of MES and vasospasm. Each middle cerebral artery was monitored for 30 minutes three times each week. Patients were excluded ...
Endo Toshiki - - 2002
OBJECTIVE AND IMPORTANCE: Intracranial aspergillosis has been reported to cause subarachnoid hemorrhage (SAH) attributable to ruptured mycotic aneurysms. We describe a case of Aspergillus arteritis that caused SAH without aneurysm formation, followed by successive brainstem and cerebellar infarction. CLINICAL PRESENTATION: A 50-year-old woman experienced a sudden onset of headache. Computed ...
Gazmuri Rodrigo R - - 2002
Two previously reported causes of postoperative limb ischemia after use of a tourniquet, compartment syndrome and arterial thromboembolism, require aggressive and invasive management. We report another probable cause that can be managed nonsurgically: vasospasm.
Chia R Y RY Dalcross Private Hospital, Killara, The University of Sydney, Australia. - - 2002
Despite recent advances in the management of aneurysmal subarachnoid haemorrhage delayed ischaemic deficits from cerebral vasospasm remains a major cause of morbidity and mortality. As magnesium is a potent cerebral vasodilator we have introduced routine supplementation in patients presented with subarachnoid haemorrhage to determine whether there has been a reduction ...
Sakamoto Makoto - - 2002
We studied whether 8-iso-PGF2alpha, nonenzymatic arachidonyl peroxide, participated in the pathogenesis of delayed vasospasm using a canine subarachnoid hemorrhage (SAH) model. Fourteen adult mongrel dogs were divided into two groups, two-hemorrhage SAH group (n = 8) and control group (n = 6). The contents of 8-iso-PGF2alpha in CSF, the basilar ...
Kasuya Hidetoshi - - 2002
BACKGROUND AND PURPOSE: Despite extensive investigative efforts, there are few treatments that can prevent vasospasm after subarachnoid hemorrhage. This study was conducted to examine the efficacy and safety of nicardipine prolonged-release implants (NPRI) for humans, which have already been proven in dogs. METHODS: Twenty consecutive subarachnoid hemorrhage patients with thick ...
Ahn Young Min - - 2002
OBJECTIVE: The vasoconstrictor peptide endothelin-1 (ET-1) produces narrowing of cerebral arteries and has been implicated in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage. Little is known, however, regarding the physiological consequences of prolonged exposure of arterial wall to ET-1. METHODS: In 30 rats, normal saline or 10(-8) mol/h of ...
Mori K - - 2002
Dissecting aneurysm confined to the anterior cerebral artery (ACA) is extremely rare. Four patients presented with dissecting aneurysms confined to the ACA, two with cerebral infarctions in the territories of the ACA and two with subarachnoid haemorrhages. The two patients with infarction were treated by conservative therapy with anti-platelet therapy ...
Khurana Vini G - - 2002
BACKGROUND AND PURPOSE: Post-subarachnoid hemorrhage (SAH) cerebral vasospasm is a potentially devastating condition whose pathogenesis involves impaired nitric oxide (NO) bioavailability. We aimed to determine whether recombinant endothelial NO synthase (eNOS) gene expression may protect vasomotor function and prevent vasospasm in a canine experimental SAH model. METHODS: Recombinant adenoviral vectors ...
Watanabe A - - 2002
Perimesencephalic nonaneurysmal subarachnoid haemorrhage (PN-SAH) is characterised by accumulation of blood around the midbrain, normal angiographic findings and an excellent prognosis. The etiology of PN-SAH has not yet been determined. Therefore we decided to compare the venograms of patients with PN-SAH with those of patients with aneurysmal SAH (A-SAH) in ...
Soustiel J F - - 2002
BACKGROUND: Cerebral vasospasm has been commonly described following subarachnoid haemorrhage (SAH) though its impact on neurological outcome, especially in head trauma, has not been yet elucidated. The purpose of this study was to monitor and correlate neurological condition and flow velocities (FVs) in the arteries of the brain after SAH ...
Lee Jung Kil - - 2002
Simultaneous occurrence of aneurysmal subarachnoid hemorrhage (SAH) and hypertensive intracerebral hemorrhage (ICH) is very rare and only two cases have been previously reported in the literatures. We present a case of 68-yr-old man with a history of untreated hypertension, who suffered from sudden onset of headache followed by right hemiparesis. ...
Niikawa Shuji - - 2002
A 46-year-old woman presented with a dissecting aneurysm of the right middle cerebral artery manifesting as subarachnoid hemorrhage followed by hemorrhagic infarctions. The aneurysm was clipped and wrapped. However, serial angiography showed progression of the lesion, which was probably responsible for the clinical course of this patient. Intracranial dissecting aneurysms ...
Leunig Michael - - 2002
A 77-year-old woman with a slightly displaced intertrochanteric two-fragment fracture of the left hip was treated by internal fixation using a screw-nail device (gamma nail). After the operation she became hemodynamically unstable, and ultrasound revealed a large retroperitoneal fluid accumulation in the left lower abdomen. A contrast computed tomogram revealed ...
Nakatsuka M - - 2002
Three-dimensional computed tomographic angiography (CTA) is a noninvasive technique for detecting lesions after acute subarachnoid hemorrhage. We encountered extravasation on CTA, a finding that has not been reported previously. Three patients with saccular aneurysms showed extravasation on CTA performed within 3 h of the onset of hemorrhage, and all three ...
Jamieson Dara G - - 2002
Headaches are a universal experience and one of the most common causes for physician consultation. The physician must determine whether a neuroimaging study is warranted to aid in the diagnosis of primary or secondary headaches. Guidelines on neuroimaging of headache patients have been developed based on review of the literature; ...
Utsuki S - - 2002
BACKGROUND: A rare case of a left temporal arteriovenous malformation (AVM) with bleeding 10 days after removal of another hemorrhagic AVM in the frontal lobe is reported. METHOD: A 47-year-old man had an attack of headache and vomiting and was admitted to our hospital. On admission, a CT scan showed ...
Soustiel Jean F - - 2002
BACKGROUND AND PURPOSE: Numerous studies have shown that cerebral vasospasm is one of the leading causes of death and neurological disability after subarachnoid hemorrhage. Most of these studies, however, have focused on anterior circulation vessels. Since the introduction of the transcranial Doppler (TCD), increasing attention has been given to basilar ...
Bjeljac M - - 2002
The fact that neurological status and physical integrity alone do not sufficiently assess the overall state of patients after aneurysmal subarachnoid hemorrhage (SAH) gives rise to the necessity for complementary neuropsychological investigation. Neuropsychological work-up should also cover an emotional state, psychosocial adjustment and competence in everyday life of the patients. ...
Levrier O O Service de Neuroradiologie, Hôpital Timone, Marseille; France - - - 2001
The case study involves a patient presenting middle cerebral artery thrombosis, related to a severe vasospasm following subarachnoid hemorrhage due to aneurysm rupture. The patient was treated initially by surgical clipping of the left middle cerebral artery aneurysm. After surgery, the neurological status of the patient was normal. Six days ...
Oran I I Ege University Medical School, Department of Radiology, Izmir; Turkey - - - 2001
We described a patient with subarachnoid hemorrhage due to a ruptured intradural aneurysm caused by arterial injury during surgery and severe symptomatic vasospasm. The iatrogenic posttraumatic aneurysm was occluded by using GDC with preservation of parent artery followed by intraarterial infusion of papaverine to treat vasospasm as an one-stage procedure. ...
Kobata H - - 2001
A 77-year-old woman suddenly lost consciousness and presented with right hemiparesis. Computed tomography showed a large subcortical hematoma in her left frontal lobe associated with subarachnoid hemorrhage. The first impression was hemorrhage due to a ruptured aneurysm of the middle cerebral or the internal carotid artery on the left. Left ...
Mayfrank L - - 2001
This study was performed to analyze the effect of intraventricular hemorrhage (IVH) on 14-day mortality, outcome at 6 months, and the occurrence of chronic hydrocephalus in patients with aneurysmal subarachnoid hemorrhage. Clinical grade of subarachnoid hemorrhage and the distribution of extravasated blood were evaluated in 219 patients with ruptured aneurysms. ...
Sirivella S - - 2001
BACKGROUND: Pulmonary artery perforation is a rare but often fatal complication of the pulmonary artery catheter occurring in cardiovascular operations and at catheterization facilities. We used our experience and a review of the literature to formulate diagnostic and management strategies. METHODS: During a 13-year period, 12 patients with pulmonary artery ...
Parizel Paul M - - 2002
OBJECTIVES: To review clinical and radiological findings in patients with Duret hemorrhages and to discuss the pathophysiology and differential diagnosis of these lesions. PATIENTS AND METHODS: We reviewed the case records of four patients with Duret hemorrhages who had been admitted to the neurological intensive care unit with supratentorial mass ...
van Dijk E J - - 2001
OBJECTIVE: In 4% to 31% of patients with acute subarachnoid hemorrhage (SAH), no underlying cause is identified. Blood is restricted to the perimesencephalic cisterns in about two thirds of these patients. These patients are identified as having perimesencephalic nonaneurysmal subarachnoid hemorrhage (PNSAH), a syndrome based on the interpretation of computed ...
Ochiai H - - 2001
The occurrence of neurogenic pulmonary edema (NPE) associated with subarachnoid hemorrhage (SAH) due to ruptured aneurysm was analyzed in 48 consecutive patients. Correlations of the location of the aneurysm, clinical grade, amount of subarachnoid clot, and severity of NPE were examined. NPE was observed in 29.4% of all SAH cases, ...
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 ...
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