نتایج جستجو برای: vasospasm

تعداد نتایج: 6807  

Journal: :British Journal of Surgery 2022

Abstract Aim This study aims to review the literature regarding utility and accuracy of transcranial toppler (TCD) ultrasound in diagnosis cerebral vasospasm (CV) following aneurysmal subarachnoid haemorrhage (aSAH). Method A systematic was conducted PRISMA guidelines. Pubmed Google Scholar online databases were searched using designated MeSH search terms: “subarachnoid haemorrhage” AND “aneury...

Journal: :Journal of neurosurgery 1994
R L Macdonald M C Wallace T J Coyne

Intracranial aneurysm surgery performed between 4 and 12 days after subarachnoid hemorrhage (SAH) has been associated with an increased risk of delayed cerebral ischemia and poor outcome compared to surgery performed before or after this time. To investigate whether this increased risk is due to aggravation of vasospasm, the angiograms obtained before and after surgery in 56 patients operated o...

Journal: :AJNR. American journal of neuroradiology 2000
W I Schievink E F Wijdicks R F Spetzler

Pretruncal (perimesencephalic) nonaneurysmal hemorrhage is a benign form of subarachnoid hemorrhage (SAH). Angiographic changes of vasospasm are uncommon in patients with this type of hemorrhage, and if vasospasm is present, it is mild and focal. We report two patients with pretruncal nonaneurysmal SAH who developed severe and diffuse vasospasm, expanding the clinical spectrum of this type of S...

Journal: :Stroke 2003
Hidenori Suzuki Masatoshi Muramatsu Tadashi Kojima Waro Taki

BACKGROUND AND PURPOSE The goal of this prospective study was to clarify the potential role of an inducible heme-metabolizing enzyme, heme oxygenase (HO)-1, and an inducible iron-detoxifying protein, ferritin, in cerebral vasospasm after aneurysmal subarachnoid hemorrhage (SAH). METHODS The authors measured the levels of bilirubin and iron, which are by-products of HO-1, and the ferritin leve...

Journal: :Stroke 1991
H Ohkuma S Suzuki M Kimura E Sobata

To evaluate the role of platelet function in the pathogenesis of cerebral vasospasm, we compared sequential changes of platelet aggregability and beta-thromboglobulin and thromboxane B2 concentrations in blood samples from the internal jugular and peripheral vein of 13 patients with aneurysmal subarachnoid hemorrhage. Platelet function in blood from the internal jugular vein tended to be enhanc...

Journal: :American journal of critical care : an official publication, American Association of Critical-Care Nurses 2006
Patricia A Blissitt Pamela H Mitchell David W Newell Susan L Woods Basia Belza

BACKGROUND In patients with aneurysmal subarachnoid hemorrhage, elevation of the head of the bed during vasospasm has been limited in an attempt to minimize vasospasm or its sequelae or both. Consequently, some patients have remained on bed rest for weeks. OBJECTIVES To determine how elevations of the head of the bed of 20 degrees and 45 degrees affect cerebrovascular dynamics in adult patien...

Journal: :AJNR. American journal of neuroradiology 2010
J V Sehy W E Holloway S-P Lin D T Cross C P Derdeyn C J Moran

BACKGROUND AND PURPOSE Endovascular options for therapy for patients with vasospasm after SAH include angioplasty and intra-arterial vasodilator infusion. Preliminary studies of the effects of the calcium channel antagonist verapamil on angiographic vasospasm have yielded mixed and/or qualitative results. In this study, improvement in angiographic vasospasm after intra-arterial verapamil admini...

Journal: :Stroke 2011
R Webster Crowley R Medel Aaron S Dumont Don Ilodigwe Neal F Kassell Stephan A Mayer Daniel Ruefenacht Peter Schmiedek Stephan Weidauer Alberto Pasqualin R Loch Macdonald

BACKGROUND AND PURPOSE The long-standing concept that delayed cerebral infarction after aneurysmal subarachnoid hemorrhage results exclusively from large artery vasospasm recently has been challenged. We used data from the CONSCIOUS-1 trial to determine the relationship between angiographic vasospasm and cerebral infarction after subarachnoid hemorrhage. METHODS We performed a post hoc explor...

Journal: :Stroke 1994
M A Sloan C M Burch M A Wozniak M I Rothman D Rigamonti T Permutt Y Numaguchi

BACKGROUND AND PURPOSE Transcranial Doppler sonography is of established value in the detection and monitoring of middle cerebral artery vasospasm. Little information exists on the utility of transcranial Doppler for detection of posterior circulation vasospasm. METHODS Cerebral angiography and conventional hand-held transcranial Doppler sonography were compared to determine sensitivity and s...

2012
Xiang Wang Yi-Ming Li Wei-Qing Li Cheng-Guang Huang Yi-Cheng Lu Li-Jun Hou

BACKGROUND Cerebral vasospasm is the most important potentially treatable cause of mortality and morbidity following aneurysmal subarachnoid hemorrhage (aSAH). Clazosentan, a selective endothelinreceptor antagonist, has been suggested to help reduce the incidence of vasospasm in patients with aSAH. However, the results were controversial in previous trials. This meta-analysis attempts to assess...

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