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subarachnoid hemorrhage and vasospasm

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https://www.readbyqxmd.com/read/28549643/hypertonic-saline-for-raised-intracranial-pressure-following-aneurysmal-subarachnoid-hemorrhage-a-systematic-review
#1
REVIEW
Christopher R Pasarikovski, Naif M Alotaibi, Fawaz Al-Mufti, R Loch Macdonald
BACKGROUND: The use of hyperosmolar agents such as mannitol or hypertonic saline (HTS) to control high intracranial pressure (ICP) in traumatic brain injury patients has been well studied. However, the role of HTS in the management of aneurysmal subarachnoid hemorrhage (aSAH)-associated raised ICP is still unclear. METHODS: We performed a systematic review in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The primary outcome of this review is to quantify ICP reduction produced by HTS and its effect on clinical outcomes defined by any standardized functional score...
May 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28548598/associations-between-endothelin-polymorphisms-and-aneurysmal-subarachnoid-hemorrhage-clinical-vasospasm-delayed-cerebral-ischemia-and-functional-outcome
#2
Christoph J Griessenauer, Robert M Starke, Paul M Foreman, Philipp Hendrix, Mark R Harrigan, Winfield S Fisher, Nilesh A Vyas, Robert H Lipsky, Mingkuan Lin, Beverly C Walters, Jean-Francois Pittet, Mali Mathru
OBJECTIVE Endothelin-1, a potent vasoconstrictor, and its receptors may be involved in the pathogenesis of aneurysmal subarachnoid hemorrhage (aSAH), clinical vasospasm, delayed cerebral ischemia (DCI), and functional outcome following aSAH. In the present study, common endothelin single nucleotide polymorphisms (SNPs) and their relation to aSAH were evaluated. METHODS Blood samples from all patients enrolled in the Cerebral Aneurysm Renin Angiotensin System (CARAS) study were used for genetic evaluation. The CARAS study prospectively enrolled patients with aSAH at 2 academic institutions in the US from 2012 to 2015...
May 26, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28515610/hyperemia-causing-delayed-recovery-in-traumatic-brain-injury
#3
Shalini Nair, Ramanan Rajagopal
Subarachnoid hemorrhage is a common manifestation of traumatic brain injury. A clinical deterioration in Glasgow Coma Scale score without an accompanying radiological worsening is suggestive of vasospasm. However, hyperemia could be another possibility which can easily be considered with corroborating transcranial Doppler (TCD) features. This case report reiterates the value of TCD in such instances.
April 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28503488/treatment-of-cerebral-vasospasm-in-an-infant-using-a-modified-dotter-technique
#4
Brian M Snelling, Samir Sur, Sumedh S Shah, Eric C Peterson
An 8-month old female presented with spontaneous subarachnoid hemorrhage and was treated successfully with endovascular coil embolization of the ruptured aneurysm. Transcranial Doppler ultrasound performed four days later demonstrated middle cerebral artery (MCA) velocities greater than 350 cm/sec on the right and greater than 200 cm/sec on the left, despite medical management. The patient demonstrated no focal neurological deficits, though examination was limited by our patient's sedation and intubation. Angiography revealed severe vasospasm of the supraclinoid internal carotid and MCA territories, bilaterally...
March 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/28499220/effects-of-preadmission-beta-blockers-on-neurogenic-stunned-myocardium-after-aneurysmal-subarachnoid-hemorrhage-a-meta-analysis
#5
Hai Luo, Wei-Xin Song, Jin-Wen Jiang, Jian-Lan Zhao, Wei-Lin Rong, Mei-Hua Li
OBJECTIVE: Spontaneous subarachnoid hemorrhage is mostly caused by the rupture of an aneurysm. Neurogenic stunned myocardium (NSM) is one of the most frequent complications caused by aneurysmal subarachnoid hemorrhage (aSAH). The possible pathogenesis of NSM may be that the catecholamine peak resulting from aSAH leads to subendocardial ischemia or coronary artery spasm. We designed this meta-analysis to find out whether beta-blockers (BB) can significantly reduce the incidence of NSM and improve the outcomes of aSAH...
May 1, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28484291/follow-up-of-vasospasm-by-transcranial-doppler-sonography-tcd-in-subarachnoid-hemorrhage-sah
#6
Jasminka Djelilovic-Vranic, Vanja Basic-Kes, Merita Tiric-Campara, Edina Djozic, Jasmin Kulenovic
INTRODUCTION: Subarachnoid hemorrhage (SAH)represents hemorrhage in the space between arachnoidea and pia mater, due to aneurysm burst, spontaneously or as a consequence of trauma. It is condition that occurs more common in women than men, and its most common complications are rebleeding and vazospasm. As a result of vasospasm, develops ischemia in the portion of brain tissue that can cause additional neurological deficit. Transcranial Doppler Sonography (TCD) is a noninvasive ultrasound diagnostic method that allows monitoring of the state of intracerebral hemodynamics...
March 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28481394/the-effect-of-intravenous-l-carnitine-on-vasospasm-process-in-the-experimental-subarachnoid-hemorrhage-model
#7
Ahmet Soyer, Murat Gokten, Kamil Oge, Figen Soylemezoglu
AIM: Cerebral vasospasm after subarachnoid hemorrhage (SAH) is an important cause of morbidity and mortality. In this study we examined the effects of L-carnitine on cerebral vasospasm process. MATERIAL AND METHODS: Twenty male New Zealand white rabbits were randomly divided into 4 groups. Group 1 served as control; group 2 were not subjected to SAH and received intravenous L-carnitine 3 times; group 3 were subjected to SAH and group 4 were subjected to SAH and treated with 100 mg/kg intravenous L-carnitine at 0 24 and 48 hours after SAH...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28468328/heparin-and-heparin-derivatives-in-post-subarachnoid-hemorrhage-brain-injury-a-multimodal-therapy-for-a-multimodal-disease
#8
REVIEW
Erik G Hayman, Akil P Patel, Robert F James, J Marc Simard
Pharmacologic efforts to improve outcomes following aneurysmal subarachnoid hemorrhage (aSAH) remain disappointing, likely owing to the complex nature of post-hemorrhage brain injury. Previous work suggests that heparin, due to the multimodal nature of its actions, reduces the incidence of clinical vasospasm and delayed cerebral ischemia that accompany the disease. This narrative review examines how heparin may mitigate the non-vasospastic pathological aspects of aSAH, particularly those related to neuroinflammation...
May 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28463833/preventive-effect-of-clazosentan-against-cerebral-vasospasm-after-clipping-surgery-for-aneurysmal-subarachnoid-hemorrhage-in-japanese-and-korean-patients
#9
Miki Fujimura, Jin-Yang Joo, Jong-Soo Kim, Motonori Hatta, Yoshinari Yokoyama, Teiji Tominaga
BACKGROUND: Clazosentan has been explored worldwide for the prophylaxis of cerebral vasospasm after aneurysmal subarachnoid hemorrhage (aSAH). In a dose-finding trial (CONSCIOUS-1) conducted in Israel, Europe, and North America, clazosentan (1, 5, and 15 mg/h) significantly reduced the incidence of cerebral vasospasm, but its efficacy in Japanese and Korean patients was unknown. We conducted a double-blind comparative study to evaluate the occurrence of cerebral vasospasm in Japanese and Korean patients with aSAH...
May 3, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28455691/long-lasting-cerebral-vasospasm-microthrombosis-apoptosis-and-paravascular-alterations-associated-with-neurological-deficits-in-a-mouse-model-of-subarachnoid-hemorrhage
#10
Mohamad El Amki, Martine Dubois, Antoine Lefevre-Scelles, Nicolas Magne, Mélanie Roussel, Thomas Clavier, Pierre-Olivier Guichet, Emmanuel Gérardin, Vincent Compère, Hélène Castel
Subarachnoid hemorrhage (SAH) is a devastating disease with high mortality and morbidity. Long-term cognitive and sensorimotor deficits are serious complications following SAH but still not well explained and described in mouse preclinical models. The aim of our study is to characterize a well-mastered SAH murine model and to establish developing pathological mechanisms leading to cognitive and motor deficits, allowing identification of specific targets involved in these long-term troubles. We hereby demonstrate that the double blood injection model of SAH induced long-lasting large cerebral artery vasospasm (CVS), microthrombosis formation and cerebral brain damage including defect in potential paravascular diffusion...
April 28, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28431602/a-comprehensive-analysis-of-the-relationship-between-aca-velocities-and-aca-infarction-following-aneurysmal-subarachnoid-hemorrhage
#11
Michael Moussouttas, Jocelyn Cheng, Joseph Antonakakis, Ameesh Patel, Maria Iuanow
PURPOSE: To evaluate the relationship between anterior cerebral artery (ACA) velocities (and ancillary parameters) and ACA infarction following aneurysmal subarachnoid hemorrhage (aSAH), and to examine the factors that influence velocities. METHODS: Retrospective investigation of 500 consecutive aSAH patients. ACA mean velocities (Vm) were evaluated by daily transcranial ultrasound during the early (days 1-4) and late (days 5-20) periods posthemorrhage. Presence and timing of acute ACA infarctions were identified by serial retrospective review of cerebral computerized tomography (CT) scans...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28416786/basilar-artery-vasospasm-after-pretuncal-non-aneurysmal-subarachnoid-hemorrhage-responding-to-milrinone
#12
Abdulrahman Y Alturki, Abdullah S Alamri, Mohamed M Badawy, Benjamin W Lo
Pretruncal (perimesencephalic) non-aneurysmal subarachnoid hemorrhage (PNSAH) is uniformly associated with an excellent outcome. Although cerebral vasospasm remains a common complication of SAH and constitutes an important predictor of outcome, in the setting of PNSAH, it is extremely rare. Preturnal non-aneurysmal subarac refers to a subset of SAH patients with a characteristic pattern of localized blood on CT of the head, normal cerebral angiography, and benign course when compared to the aneurysmal SAH population...
April 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28415958/glycyrrhizic-acid-exerts-anti-inflammatory-effect-to-improve-cerebral-vasospasm-secondary-to-subarachnoid-hemorrhage-in-a-rat-model
#13
Yi Li, Fengbin Sun, Zhaohui Jing, Xuhui Wang, Xuming Hua, Liang Wan
This study aimed to investigate the therapeutic effect of glycyrrhizic acid (GA) on the cerebral vasospasm (CVS) in a rat subarachnoid hemorrhage (SAH) model and to explore the potential mechanism. A total of 44 healthy male rats were randomly assigned into 3 groups: control group (n = 12), SAH group (n = 16) and GA group (n = 16). No treatment was conducted in control group; in SAH group and GA group, experimental CVS was induced using a double-hemorrhage model and then rats were intraperitoneally injected with normal saline and GA at 10 mg/kg, respectively, once daily...
April 17, 2017: Neurological Research
https://www.readbyqxmd.com/read/28413527/first-report-of-important-causal-relationship-between-the-adamkiewicz-artery-vasospasm-and-dorsal-root-ganglion-cell-degeneration-in-spinal-subarachnoid-hemorrhage-an-experimental-study-using-a-rabbit-model
#14
Osman N Turkmenoglu, Ayhan Kanat, Coskun Yolas, Mehmet Dumlu Aydin, Naci Ezirmik, Cemal Gundogdu
BACKGROUND: The blood supply of the lower spinal cord is heavily dependent on the artery of Adamkiewicz. The goal of this study was to elucidate the effects of lumbar subarachnoid hemorrhage (SAH) on the lumbar 4 dorsal root ganglion (L4DRG) cells secondary to Adamkiewicz artery (AKA) vasospasm. MATERIALS AND METHODS: This study was conducted on 20 rabbits, which were randomly divided into three groups: Spinal SAH (n = 8), serum saline (SS) (SS; n = 6) and control (n = 6) groups...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28400792/toll-like-receptor-4-as-a-possible-therapeutic-target-for-delayed-brain-injuries-after-aneurysmal-subarachnoid-hemorrhage
#15
REVIEW
Takeshi Okada, Hidenori Suzuki
Neuroinflammation is a well-recognized consequence of subarachnoid hemorrhage (SAH), and Toll-like receptor (TLR) 4 may be an important therapeutic target for post-SAH neuroinflammation. Of the TLR family members, TLR4 is expressed in various cell types in the central nervous system, and is unique in that it can signal through both the myeloid differentiation primary-response protein 88-dependent and the toll receptor associated activator of interferon-dependent cascades to coordinate the maximal inflammatory response...
February 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28397570/is-intra-arterial-nimodipine-really-beneficial-in-vasospasm-following-aneurysmal-subarachnoid-hemorrhage
#16
Ashwani Kumar, Manoj Phalak
No abstract text is available yet for this article.
April 11, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28386837/effect-of-delayed-onset-prostacyclin-on-markers-of-endothelial-function-and-damage-after-subarachnoid-hemorrhage
#17
Mikkel Gybel-Brask, Rune Rasmussen, Jakob Stensballe, Pär I Johansson, Sisse R Ostrowski
BACKGROUND: Subarachnoid hemorrhage (SAH) is a neurological emergency. Delayed ischemic neurological deficit is one of the main causes of poor outcome after SAH and is probably caused, at least in part, by cerebral vasospasm. The pathophysiology of this is multifaceted, but endothelial damage and activation as well as glycocalyx damage have been implicated. Prostacyclin has been shown to protect damaged and activated endothelium and to facilitate glycocalyx repair. We investigated biomarkers of endothelial activation and damage in patients with SAH randomized to 5 days prostacyclin infusion or placebo...
June 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28383092/effects-of-arginine-vasopressin-and-v1-receptor-antagonist-on-cerebral-vasospasm-secondary-to-subarachnoid-hemorrhage-an-experimental-study
#18
Derviş Mansuri Yilmaz, Ersin Haciyakupoğlu, Serkan Diril, Leman Sencar, Erol Akgül, Sait Polat, Sebahattin Haciyakupoğlu, Ersin Nazlican
AIM: The aim of this study is to examine morphological, radiological and biochemical effects of arginine vasopressin(AV) and AV V1 receptor antagonist cerebral vasospasm(CVS) in rabbit subarachnoid hemorrhage(SAH). MATERIAL AND METHODS: Forty male New Zealand white rabbits were randomly divided to four groups comprising 10 rabbits each. The groups were 1) control, 2) subarachnoid hemorrhage(SAH), 3) SAH+AV application, 4) SAH+V1 antagonist of AV V1 receptor Diameters of the basilar artery of all the groups were measured on angiograms...
March 9, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28382509/predicting-outcome-in-subarachnoid-hemorrhage-sah-utilizing-the-full-outline-of-unresponsiveness-four-score
#19
F A Zeiler, B W Y Lo, E Akoth, J Silvaggio, A M Kaufmann, J Teitelbaum, M West
BACKGROUND: Existing scoring systems for aneurysmal subarachnoid hemorrhage (SAH) patients fail to accurately predict patient outcome. Our goal was to prospectively study the Full Outline of UnResponsiveness (FOUR) score as applied to newly admitted aneurysmal SAH patients. METHODS: All adult patients presenting to Health Sciences Center in Winnipeg from January 2013 to July 2015 (2.5 year period) with aneurysmal SAH were prospectively enrolled in this study. All patients were followed up to 6 months...
April 5, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28379540/hyperglycemia-aggravates-cerebral-vasospasm-after-subarachnoid-hemorrhage-in-a-rat-model
#20
Yu-Hua Huang, Chia-Li Chung, Hung-Pei Tsai, Shu-Chuan Wu, Chih-Zen Chang, Chee-Yin Chai, Tao-Chen Lee, Aij-Lie Kwan
BACKGROUND: Hyperglycemia is common and showed to be risky for poor prognosis in patients with subarachnoid hemorrhage (SAH). However, the causality and mechanism underlying this observation are not well established. OBJECTIVE: To investigate the relationship between hyperglycemia and cerebral vasospasm with its pathogenesis in a rat model of SAH. METHODS: One-shot SAH model was employed in male Sprague-Dawley rats. Hyperglycemia was triggered by intraperitoneal streptozotocin administration (50 mg/kg) 7 days before SAH induction...
March 30, 2017: Neurosurgery
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