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subarachnoid hemorrhage and vasospasm

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https://www.readbyqxmd.com/read/28344178/systemic-and-cerebral-concentration-of-nimodipine-during-established-and-experimental-vasospasm-treatment
#1
Walid Albanna, Miriam Weiss, Catharina Conzen, Hans Clusmann, Toni Schneider, Martin Reinsch, Marguerite Müller, Martin Wiesmann, Anke Höllig, Gerrit Alexander Schubert
BACKGROUND: Oral nimodipine is an established prophylactic agent for cerebral vasospasm after subarachnoid hemorrhage (SAH). In highly selected cases, intraarterial or intravenous application of nimodipine may be considered; optimum dosage and modality of application, however, remain a matter of debate. Analysis of nimodipine concentration in serum, CSF and cerebral microdialysate in context of currently effective dose and route of application (oral, IA, IV) is the purpose of this investigation...
March 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28342700/nicotine-replacement-therapy-in-patients-with-aneurysmal-subarachnoid-hemorrhage-systematic-review-of-the-literature-and-survey-of-canadian-practice
#2
REVIEW
Ricky D Turgeon, Stephano J Chang, Charlotte Dandurand, Peter A Gooderham, Camille Hunt
Tobacco smoke increases the risk of aneurysmal subarachnoid hemorrhage (SAH), as well as complications such as vasospasm. Most patients presenting with aneurysmal SAH smoke, and many survivors continue to smoke after discharge. Neurosurgeons often hesitate to use nicotine replacement therapy (NRT) during hospitalization of patients with SAH due to concerns of inducing vasospasm. We aimed to evaluate the safety and efficacy, and patterns of use of NRT in smokers hospitalized for SAH. We performed a systematic review of MEDLINE, CENTRAL, Embase, and unpublished sources of literature to October 2016 for randomized and observational studies comparing exposure to non-exposure of smoking cessation products in the acute phase of aneurysmal SAH...
March 22, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28339483/temporal-evolution-of-vasospasm-and-clinical-outcome-after-intra-arterial-vasodilator-therapy-in-patients-with-aneurysmal-subarachnoid-hemorrhage
#3
Laleh Daftari Besheli, Can Ozan Tan, Donnie L Bell, Joshua A Hirsch, Rajiv Gupta
Intra-arterial (IA) vasodilator therapy is one of the recommended treatments to minimize the impact of aneurysmal subarachnoid hemorrhage-induced cerebral vasospasm refractory to standard management. However, its usefulness and efficacy is not well established. We evaluated the effect IA vasodilator therapy on middle cerebral artery blood flow and on discharge outcome. We reviewed records for 115 adults admitted to Neurointensive Care Unit to test whether there was a difference in clinical outcome (discharge mRS) in those who received IA infusions...
2017: PloS One
https://www.readbyqxmd.com/read/28335661/safety-and-efficacy-of-balloon-angioplasty-of-the-anterior-cerebral-artery-for-vasospasm-treatment-after-subarachnoid-hemorrhage
#4
Nauman S Chaudhry, Jennifer L Orning, Sophia F Shakur, Sepideh Amin-Hanjani, Victor A Aletich, Fady T Charbel, Ali Alaraj
Balloon angioplasty is often performed for symptomatic vasospasm following aneurysmal subarachnoid hemorrhage. Angioplasty of the anterior cerebral artery (ACA), however, is perceived to be a challenging endeavor and not routinely performed due to technical and safety concerns. Here, we evaluate the safety and efficacy of balloon angioplasty of the anterior cerebral artery for vasospasm treatment. Patients with vasospasm following subarachnoid hemorrhage who underwent balloon angioplasty at our institution between 2011 and 2016 were retrospectively reviewed...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28302352/neuroinflammation-responses-after-subarachnoid-hemorrhage-a-review
#5
REVIEW
Vera Zhiyuan Zheng, George Kwok Chu Wong
Subarachnoid hemorrhage (SAH) is an important cause of stroke mortality and morbidity, especially in the young stroke population. Recent evidences indicate that neuroinflammation plays a critical role in both early brain injury and the delayed brain deterioration after SAH, including cellular and molecular components. Cerebral vasospasm (CV) can lead to death after SAH and independently correlated with poor outcome. Neuroinflammation is evidenced to contribute to the etiology of vasospasm. Besides, systemic inflammatory response syndrome (SIRS) commonly occurs in the SAH patients, with the presence of non-infectious fever and systematic complications...
March 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28277457/advanced-mri-measures-of-cerebral-perfusion-and-their-clinical-applications
#6
Bryan Lanzman, Jeremy J Heit
Cerebral blood flow measurement by magnetic resonance imaging perfusion (MRP) techniques is broadly applied to patients with acute ischemic stroke, vasospasm following aneurysmal subarachnoid hemorrhage, chronic arterial steno-occlusive disease, cervical atherosclerotic disease, and primary brain neoplasms. MRP may be performed using an exogenous tracer, most commonly gadolinium-based intravenous contrast, or an endogenous tracer, such as arterial spin labeling (ASL) or intravoxel incoherent motion (IVIM). Here, we review the technical basis of commonly performed MRP techniques, the interpretation of MRP imaging maps, and how MRP provides valuable clinical information in the triage of patients with cerebral disease...
March 8, 2017: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/28267024/effectiveness-of-intrathecal-nicardipine-on-cerebral-vasospasm-in-non-traumatic-subarachnoid-hemorrhage-a-systematic-review-protocol
#7
Daniel Stuart, Robin Christian, Hartmut Uschmann
The objective of this review is to determine the effectiveness of intrathecal (IT) nicardipine on cerebral vasospasm and its impact on the following outcome measures: mean flow velocities, angiographic and/or clinical vasospasm and infection rates. Specifically, the review question is: What is the effectiveness of IT nicardipine on cerebral vasospasm in adult patients with aneurysmal subarachnoid hemorrhage?
March 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28261769/evaluation-of-risk-factors-and-development-of-acute-kidney-injury-in-aneurysmal-subarachnoid-hemorrhage-head-injury-and-severe-sepsis-septic-shock-patients-during-icu-treatment
#8
Ceren Kamar, Achmet Ali, Demet Altun, Günseli Orhun, Akın Sabancı, Altay Sencer, İbrahim Özkan Akıncı
BACKGROUND: There are few studies examining development of acute kidney injury (AKI) in the various types of patients in intensive care units (ICUs). Presently described is evaluation of risk factors and development of AKI in different groups of ICU patients. METHODS: Present study was performed in 3 different ICUs. Development of AKI was measured using Acute Kidney Injury Network (AKIN) classification system. Total of 300 patients who were treated in trauma, neurosurgery, or general ICU departments (due to head injury, aneurysmal subarachnoid hemorrhage [aSAH], or severe sepsis/septic shock, respectively) were assessed for incidence, risk factors, and development of AKI...
January 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28254599/invasive-orbital-apex-aspergillosis-with-mycotic-aneurysm-formation-and-subarachnoid-hemorrhage-in-immunocompetent-patients
#9
Saleh S Baeesa, Mohamad Bakhaidar, Naushad A B Ahamed, Tariq A Madani
BACKGROUND: Invasive orbital apex aspergillosis (IOAA) is an aggressive form of aspergillus infection that usually affects immunocompromised patients. It can cause orbital apex syndrome and, if not treated promptly, may progress rapidly causing fatal complications. Subarachnoid hemorrhage (SAH) secondary to ruptured mycotic aneurysms is a very rare complication of invasive aspergillosis. We aim to describe our management and the outcome of six immunocompetent patients with IOAA with subsequent SAH secondary to ruptured mycotic aneurysms...
February 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28250634/sudden-death-and-cervical-spine-a-new-contribution-to-pathogenesis-for-sudden-death-in-critical-care-unit-from-subarachnoid-hemorrhage-first-report-an-experimental-study
#10
Hizir Kazdal, Ayhan Kanat, Mehmet Dumlu Aydin, Ugur Yazar, Ali Riza Guvercin, Muhammet Calik, Betul Gundogdu
CONTEXT: Sudden death from subarachnoid hemorrhage (SAH) is not uncommon. AIMS: The goal of this study is to elucidate the effect of the cervical spinal roots and the related dorsal root ganglions (DRGs) on cardiorespiratory arrest following SAH. SETTINGS AND DESIGN: This was an experimental study conducted on rabbits. MATERIALS AND METHODS: This study was conducted on 22 rabbits which were randomly divided into three groups: control (n = 5), physiologic serum saline (SS; n = 6), SAH groups (n = 11)...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28244007/effects-of-tenascin-c-knockout-on-cerebral-vasospasm-after-experimental-subarachnoid-hemorrhage-in-mice
#11
Masashi Fujimoto, Masato Shiba, Fumihiro Kawakita, Lei Liu, Naoshi Shimojo, Kyoko Imanaka-Yoshida, Toshimichi Yoshida, Hidenori Suzuki
A matricellular protein tenascin-C (TNC) has been suggested to play a role in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage (SAH), but the direct evidence remains lacking. In this study, we examined effects of TNC knockout (TNKO) on cerebral vasospasm after experimental SAH in mice. C57BL/6 wild-type (WT) or TNKO mice were subjected to SAH by endovascular puncture. Ten WT and ten TNKO mice were randomized to WT sham (n = 4), TNKO sham (n = 4), WT SAH (n = 6), and TNKO SAH (n = 6) groups...
February 27, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28241122/numerical-investigation-of-vasospasm-detection-by-extracranial-blood-velocity-ratios
#12
Jaiyoung Ryu, Nerissa Ko, Xiao Hu, Shawn C Shadden
BACKGROUND: Early diagnosis of vasospasm following subarachnoid hemorrhage can prevent cerebral ischemia and improve neurological outcomes. This study numerically evaluates the relevance of extracranial blood velocity indices to detect vasospasm. METHODS: A numerical model of cerebral blood flow was used to evaluate the hemodynamics associated with anterior and posterior vasospasm under normal and impaired cerebral autoregulation conditions. Extracranial blood velocities at the carotid and vertebral arteries and their ratios between ipsilateral and contralateral, anterior and posterior, and downstream and upstream arteries were monitored during vasospasm progression...
February 28, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28236213/ethyl-pyruvate-attenuates-early-brain-injury-following-subarachnoid-hemorrhage-in-the-endovascular-perforation-rabbit-model-possibly-via-anti-inflammation-and-inhibition-of-jnk-signaling-pathway
#13
Tao Lv, Yi-Feng Miao, Yi-Chao Jin, Shao-Feng Yang, Hui Wu, Jiong Dai, Xiao-Hua Zhang
Early brain injury (EBI) following subarachnoid hemorrhage (SAH) is the main cause to poor outcomes of SAH patients, and early inflammation plays an important role in the acute pathophysiological events. It has been demonstrated that ethyl pyruvate (EP) has anti-inflammatory and neuroprotective effects in various critical diseases, however, the role of EP on EBI following SAH remains to be elucidated. Our study aimed to evaluate the effects of EP on EBI following SAH in the endovascular perforation rabbit model...
February 25, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28224318/chemical-angioplasty-with-spasmolytics-for-vasospasm-after-subarachnoid-hemorrhage
#14
Aleš Hejčl, Filip Cihlář, Vojtěch Smolka, Petr Vachata, Robert Bartoš, Jan Procházka, Jiří Cihlář, Martin Sameš
BACKGROUND: Clinically symptomatic vasospasm leading to delayed ischemic neurological deficits occurs in up to 30% of patients with subarachnoid hemorrhage (SAH). Vasospasm can result in a serious decline in clinical conditions of patients with SAH, yet the algorithm for vasospasm treatment and prevention remains unclear. Intra-arterial administration of vasodilators is one of the modalities used for vasospasm therapy. METHODS: Over the last 7 years, we have treated 27 female and 7 male patients with vasospasm using intra-arterial administration of either nimodipine or milrinone; all had suffered aneurysm rupture...
February 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28217390/management-of-aneurysmal-subarachnoid-hemorrhage-state-of-the-art-and-future-perspectives
#15
REVIEW
Giovanni Grasso, Concetta Alafaci, R Loch Macdonald
BACKGROUND: Aneurysmal subarachnoid hemorrhage (SAH) accounts for 5% of strokes and carries a poor prognosis. It affects around 6 cases per 100,000 patient years occurring at a relatively young age. METHODS: Common risk factors are the same as for stroke, and only in a minority of the cases, genetic factors can be found. The overall mortality ranges from 32% to 67%, with 10-20% of patients with long-term dependence due to brain damage. An explosive headache is the most common reported symptom, although a wide spectrum of clinical disturbances can be the presenting symptoms...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28215029/an-introduction-to-the-pathophysiology-of-aneurysmal-subarachnoid-hemorrhage
#16
REVIEW
Jasper H van Lieshout, Maxine Dibué-Adjei, Jan F Cornelius, Philipp J Slotty, Toni Schneider, Tanja Restin, Hieronymus D Boogaarts, Hans-Jakob Steiger, Athanasios K Petridis, Marcel A Kamp
Pathophysiological processes following subarachnoid hemorrhage (SAH) present survivors of the initial bleeding with a high risk of morbidity and mortality during the course of the disease. As angiographic vasospasm is strongly associated with delayed cerebral ischemia (DCI) and clinical outcome, clinical trials in the last few decades focused on prevention of these angiographic spasms. Despite all efforts, no new pharmacological agents have shown to improve patient outcome. As such, it has become clear that our understanding of the pathophysiology of SAH is incomplete and we need to reevaluate our concepts on the complex pathophysiological process following SAH...
February 18, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28201539/endovascular-rescue-therapies-for-refractory-vasospasm-after-subarachnoid-hemorrhage-a-prospective-evaluation-study-using-multimodal-continuous-event-neuromonitoring
#17
Walid Albanna, Miriam Weiss, Marguerite Müller, Marc Alexander Brockmann, Annette Rieg, Catharina Conzen, Hans Clusmann, Anke Höllig, Gerrit Alexander Schubert
No abstract text is available yet for this article.
February 13, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28199398/a-segmentation-based-volumetric-approach-to-localize-and-quantify-cerebral-vasospasm-based-on-tomographic-imaging-data
#18
Axel Neulen, Tobias Pantel, Michael Kosterhon, Stefanie Kirschner, Marc A Brockmann, Sven R Kantelhardt, Alf Giese, Serge C Thal
INTRODUCTION: Quantification of cerebral vasospasm after subarachnoid hemorrhage (SAH) is crucial in animal studies as well as clinical routine. We have developed a method for computer-based volumetric assessment of intracranial blood vessels from cross-sectional imaging data. Here we demonstrate the quantification of vasospasm from micro computed tomography (micro-CT) data in a rodent SAH model and the transferability of the volumetric approach to clinical data. METHODS: We obtained rodent data by performing an ex vivo micro-CT of murine brains after sham surgery or SAH by endovascular filament perforation on day 3 post hemorrhage...
2017: PloS One
https://www.readbyqxmd.com/read/28182715/mr-angiography-allows-defining-severity-grades-of-cerebral-vasospasm-in-an-experimental-double-blood-injection-subarachnoid-hemorrhage-model-in-rats
#19
Vesna Malinova, Marios N Psychogios, Ioannis Tsogkas, Birte Koennecke, Kim Bleuel, Bogdan Iliev, Veit Rohde, Dorothee Mielke
OBJECTIVE: Magnetic resonance (MR) imaging has been used for the detection of cerebral vasospasm (VSP) related infarction in experimental subarachnoid hemorrhage (eSAH) in rats. Conventional angiography is generally used to visualize VSP, which is an invasive technique with a possible increase in morbidity and mortality. In this study we evaluated the validity of MR-angiography (MRA) in detecting VSP and its feasibility to define VSP severity grades after eSAH in rats. METHODS: SAH was induced using the double-hemorrhage model in 12 rats...
2017: PloS One
https://www.readbyqxmd.com/read/28178356/correction-incidence-and-predictors-of-angiographic-vasospasm-symptomatic-vasospasm-and-cerebral-infarction-in-chinese-patients-with-aneurysmal-subarachnoid-hemorrhage
#20
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0168657.].
2017: PloS One
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