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cerebral aneurysm rupture risk

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https://www.readbyqxmd.com/read/28017208/subjective-hearing-impairment-after-subarachnoid-haemorrhage-prevalence-and-risk-factors
#1
Erik M Vos, Paut Greebe, J M Anne Visser-Meily, Gabriel J E Rinkel, Mervyn D I Vergouwen
BACKGROUND: Sensorineural hearing impairment is a key symptom in patients with superficial siderosis of the central nervous system, a disease caused by chronic or intermittent haemorrhage into the subarachnoid space. We investigated the prevalence and risk factors of subjective hearing impairment after SAH. METHODS: We systematically interviewed all SAH patients admitted between June 2011 and December 2014, who were able to visit the SAH outpatient clinic six to eight weeks after hospital discharge...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28009232/clinical-relevance-of-anterior-cerebral-artery-asymmetry-in-aneurysmal-subarachnoid-hemorrhage
#2
Ramazan Jabbarli, Matthias Reinhard, Roland Roelz, Klaus Kaier, Astrid Weyerbrock, Christian Taschner, Christian Scheiwe, Mukesch Shah
OBJECTIVE An asymmetry of the A1 segments (A1SA) of the anterior cerebral arteries (ACAs) is an assumed risk factor for the development of anterior communicating artery aneurysms (ACoAAs). It is unknown whether A1SA is also clinically relevant after aneurysm rupture. The authors of this study investigated the impact of A1SA on the clinical course and outcome of patients with aneurysmal subarachnoid hemorrhage (SAH). METHODS The authors retrospectively analyzed data on consecutive SAH patients treated at their institution between January 2005 and December 2012...
December 23, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27943077/outcome-and-prognostic-factors-after-delayed-second-subarachnoid-haemorrhage
#3
Nina Brawanski, Johannes Platz, Markus Bruder, Christian Senft, Joachim Berkefeld, Volker Seifert, Juergen Konczalla
BACKGROUND: Data of patients suffering from delayed second subarachnoid haemorrhage (SAH) after aneurysm treatment are still missing. Patients become clearly older than before. Thus, the risk suffering from a second delayed SAH rises. The aim of this study was to analyse clinical outcome and prognostic factors in patients after delayed second SAH. METHOD: From 1999 to 2013, 18 of 1,493 patients (1.2%) suffered from a second SAH. Clinical and radiological characteristics were entered into a prospective conducted database...
February 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27935361/acute-impairment-of-saccadic-eye-movements-is-associated-with-delayed-cerebral-ischemia-after-aneurysmal-subarachnoid-hemorrhage
#4
Matthew J Rowland, Payashi Garry, Jon Westbrook, Rufus Corkill, Chrystalina A Antoniades, Kyle T S Pattinson
OBJECTIVE Delayed cerebral ischemia (DCI) causing cerebral infarction remains a significant cause of morbidity and mortality following aneurysmal subarachnoid hemorrhage (aSAH). Early brain injury in the first 72 hours following rupture is likely to play a key role in the pathophysiology underlying DCI but remains difficult to quantify objectively. Current diagnostic modalities are based on the concept of vasoconstriction causing cerebral ischemia and infarction and are either invasive or have a steep learning curve and user variability...
December 9, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27882440/hemodynamic-changes-in-a-middle-cerebral-artery-aneurysm-at-follow-up-times-before-and-after-its-rupture-a-case-report-and-a-review-of-the-literature
#5
A Sejkorová, K D Dennis, H Švihlová, O Petr, G Lanzino, A Hejčl, D Dragomir-Daescu
Hemodynamic parameters play a significant role in the development of cerebral aneurysms. Parameters such as wall shear stress (WSS) or velocity could change in time and may contribute to aneurysm growth and rupture. However, the hemodynamic changes at the rupture location remain unclear because it is difficult to obtain data prior to rupture. We analyzed a case of a ruptured middle cerebral artery (MCA) aneurysm for which we acquired imaging data at three time points, including at rupture. A patient with an observed MCA aneurysm was admitted to the emergency department with clinical symptoms of a subarachnoid hemorrhage...
November 24, 2016: Neurosurgical Review
https://www.readbyqxmd.com/read/27880805/feasibility-of-quantification-of-intracranial-aneurysm-pulsation-with-4d-cta-with-manual-and-computer-aided-post-processing
#6
Till Illies, Dennis Saering, Manabu Kinoshita, Toshiyuki Fujinaka, Maxim Bester, Jens Fiehler, Noriyuki Tomiyama, Yoshiyuki Watanabe
BACKGROUND AND PURPOSE: The analysis of the pulsation of unruptured intracranial aneurysms might improve the assessment of their stability and risk of rupture. Pulsations can easily be concealed due to the small movements of the aneurysm wall, making post-processing highly demanding. We hypothesized that the quantification of aneurysm pulsation is technically feasible and can be improved by computer-aided post-processing. MATERIALS AND METHODS: Images of 14 cerebral aneurysms were acquired with an ECG-triggered 4D CTA...
2016: PloS One
https://www.readbyqxmd.com/read/27875190/combined-visualization-of-vessel-deformation-and-hemodynamics-in-cerebral-aneurysms
#7
Monique Meuschke, Samuel Voss, Oliver Beuing, Bernhard Preim, Kai Lawonn
We present the first visualization tool that combines patient-specific hemodynamics with information about the vessel wall deformation and wall thickness in cerebral aneurysms. Such aneurysms bear the risk of rupture, whereas their treatment also carries considerable risks for the patient. For the patient-specific rupture risk evaluation and treatment analysis, both morphological and hemodynamic data have to be investigated. Medical researchers emphasize the importance of analyzing correlations between wall properties such as the wall deformation and thickness, and hemodynamic attributes like the Wall Shear Stress and near-wall flow...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27871451/aneurysm-rebleeding-after-poor-grade-aneurysmal-subarachnoid-hemorrhage-predictors-and-impact-on-clinical-outcomes
#8
Bing Zhao, Yilin Fan, Ye Xiong, Rong Yin, Kuang Zheng, Zequn Li, Xianxi Tan, Hua Yang, Ming Zhong
BACKGROUND: Aneurysm rebleeding is a major cause of morbidity and mortality after aneurysmal subarachnoid hemorrhage (aSAH) and more often occurs in patients with poor-grade aSAH. Limited data on predictors of rebleeding in these patients are available. OBJECTIVE: To investigate predictors of aneurysm rebleeding after poor-grade aSAH and the association of rebleeding with clinical outcomes. METHODS: A multicenter poor-grade aneurysm study was a prospective and observational registry of consecutive patients who presented with poor-grade aSAH defined as a World Federation of Neurosurgical Societies (WFNS) grade of IV or V...
December 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27856436/diffusion-weighted-imaging-detected-ischemic-lesions-following-endovascular-treatment-of-cerebral-aneurysms-a-systematic-review-and-meta-analysis
#9
K M Bond, W Brinjikji, M H Murad, D F Kallmes, H J Cloft, G Lanzino
BACKGROUND AND PURPOSE: Endovascular treatment of intracranial aneurysms is associated with the risk of thromboembolic ischemic complications. Many of these events are asymptomatic and identified only on diffusion-weighted imaging. We performed a systematic review and meta-analysis to study the incidence of DWI positive for thromboembolic events following endovascular treatment of intracranial aneurysms. MATERIALS AND METHODS: A comprehensive literature search identified studies published between 2000 and April 2016 that reported postprocedural DWI findings in patients undergoing endovascular treatment of intracranial aneurysms...
November 17, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27852140/impact-of-pregnancy-on-the-size-of-small-cerebral-aneurysm
#10
Hiroaki Tanaka, Shinji Katsuragi, Kayo Tanaka, Naoko Iwanaga, Jun Yoshimatsu, Jun C Takahashi, Tomoaki Ikeda
OBJECTIVE: Because the management of cerebral aneurysms during pregnancy remains controversial, the objective of this study was to perform a retrospective review of pregnant women with cerebral aneurysms to determine whether pregnancy is a risk factor for aneurysm rupture. METHODS: The change in size of aneurysms during pregnancy was examined by performing repeat magnetic resonance angiography in five pregnant women with cerebral aneurysms between 2005 and 2013...
December 14, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27744074/prevalence-of-asymptomatic-unruptured-intracranial-aneurysms-in-a-southeast-asian-population
#11
Ady Thien, Angela An Qi See, Samantha Ya Lyn Ang, Nishal Kishinchand Primalani, Mervyn Jun Rui Lim, Yew Poh Ng, Nicolas Kon Kam King
BACKGROUND: The prevalence of asymptomatic unruptured intracranial aneurysms (AUIA) in a Southeast Asian population has not been previously studied. Knowing the disease burden and population at risk can assist us in making informed decisions when managing AUIAs. We aimed to determine if the local prevalence of AUIAs differed from other populations in the published literature. METHODS: Magnetic resonance angiography radiology reports and images for 4572 patients between January 2013 and January 2014 were reviewed for AUIAs...
October 12, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27743630/sensitivity-of-flow-patterns-in-aneurysms-on-the-anterior-communicating-artery-to-anatomic-variations-of-the-cerebral-arterial-network
#12
Fuyou Liang, Xiaosheng Liu, Ryuhei Yamaguchi, Hao Liu
Recent studies raised increasing concern about the reliability of computer models in reproducing in vivo hemodynamics in cerebral aneurysms. Boundary condition problem is among the most frequently addressed issues since three-dimensional (3-D) modeling is usually restricted to local arterial segments. The present study focused on aneurysms on the anterior communicating artery (ACoA) which represent a large subgroup of detected cerebral aneurysms and, in particular, have a relatively high risk of rupture compared to aneurysms located in other regions...
October 6, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27703635/anesthetic-management-during-surgery-for-left-ventricular-aneurysm-and-false-aneurysm-occurring-in-stage-a-case-report
#13
Chung Hun Lee, Dong Kyu Lee, Sang Ho Lim, Heezoo Kim
Left ventricular aneurysm (LVA) and false aneurysm are complications of acute myocardial infarction, trauma, and cardiac surgery. Left ventricular false aneurysm (LVFA) is a particularly catastrophic complication owing to its high propensity for rupture. Surgical resection should be considered for LVFA occurring within three months after myocardial infarction or development of congestive heart failure. In this report, we describe a case of acute heart failure with LVA and LVFA occurring in stage as a complication of myocardial infarction in a 55-year-old man...
October 2016: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/27695537/comparison-of-computational-fluid-dynamics-findings-with-intraoperative-microscopy-findings-in-unruptured-intracranial-aneurysms-an-initial-analysis
#14
Sandeep Talari, Yoko Kato, Hanbing Shang, Yasuhiro Yamada, Kei Yamashiro, Daisuke Suyama, Tsukasa Kawase, Vladimir Balik, Wu Rile
CONTEXT: The increase in the detection of unruptured cerebral aneurysms has led to management dilemma. Prediction of risk based on the size of the aneurysm is not always accurate. There is no objective way of predicting rupture of aneurysm so far. Computational fluid dynamics (CFDs) was proposed as a tool to identify the rupture risk. AIMS: To know the correlation of CFD findings with intraoperative microscopic findings and to know the relevance of CFD in the prediction of rupture risk and in the management of unruptured intracranial aneurysms...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27689465/relationship-of-a1-segment-hypoplasia-to-anterior-communicating-artery-aneurysm-morphology-and-risk-factors-for-aneurysm-formation
#15
Lorenzo Rinaldo, Brandon A McCutcheon, Meghan E Murphy, Mohamad Bydon, Alejandro A Rabinstein, Giuseppe Lanzino
OBJECTIVE Hypoplasia of the A1 segment of the anterior cerebral artery is frequently observed in patients with anterior communicating artery (ACoA) aneurysms. The effect of this anatomical variant on ACoA aneurysm morphology is not well understood. METHODS Digital subtraction angiography images were reviewed for 204 patients presenting to the authors' institution with either a ruptured or an unruptured ACoA aneurysm. The ratio of the width of the larger A1 segment to the smaller A1 segment was calculated. Patients with an A1 ratio greater than 2 were categorized as having A1 segment hypoplasia...
September 30, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27647035/comparison-of-stent-assisted-coiling-and-balloon-assisted-coiling-in-the-treatment-of-ruptured-wide-necked-intracranial-aneurysms-in-the-acute-period
#16
Kefu Cai, Yunfeng Zhang, Lihua Shen, Yaohui Ni, Qiuhong Ji
OBJECTIVE: The purpose of this study was to compare the efficacy, stability, and safety of stent-assisted coiling (SAC) and balloon-assisted coiling (BAC) in the treatment of ruptured wide-necked aneurysms in the acute period. METHODS: Consecutive patients including 65 cases treated with SAC and 32 with BAC were reviewed at authors' institution between November 2011 and December 2014. The efficacy of these two approaches and the incidence of periprocedural complications were retrospectively evaluated...
September 16, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27637629/bypass-surgeries-in-the-treatment-of-cerebral-aneurysms
#17
Takayuki Hara, Shintaro Arai, Yoshiaki Goto, Tsuguhito Takizawa, Tatsuya Uchida
BACKGROUND: During surgery for cerebral aneurysm, revascularization techniques are occasionally needed to (1) treat an aneurysm (trapping or flow alteration); (2) preserve blood flow during temporary parent artery occlusion (insurance); and (3) repair accidentally injured vessels (troubleshooting). Herein we present our surgical case experiences. METHODS: Revascularization modalities were employed in 33 (7.6 %) of 452 cases of surgically treated aneurysms. The aneurysm locations and associated required bypass procedures were: (1) 7 middle cerebral artery (MCA) aneurysms with 7 superficial temporal artery (STA)-MCA bypass procedures; (2) 10 internal carotid artery (ICA) aneurysms with 9 high-flow and 1 STA-MCA procedures; (3) 10 vertebro-basilar artery aneurysms with 2 high-flow, 6 occipital artery (OA)-posterior ICA, and 1 STA-superior cerebellar artery (SCA) procedures; (4) 1 posterior cerebral artery (PCA) aneurysm with OA-PCA bypass; and (5) 5 anterior cerebral artery aneurysms with 4 A3-A3 and 1 A3-STA-A3 procedure...
2016: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/27637623/results-of-clipping-surgery-for-aneurysmal-subarachnoid-hemorrhage-in-elderly-patients-aged-90-or-older
#18
Yota Suzuki, Atsushi Watanabe, Kenji Wakui, Tetsuyoshi Horiuchi, Kazuhiro Hongo
BACKGROUND: The number of elderly patients with aneurysmal subarachnoid hemorrhage (SAH) is increasing. Although advanced age is one of the recognized risk factors for poor outcome, conservative treatment for aneurysmal subarachnoid hemorrhage cannot provide satisfactory outcome in elderly patients. The aim of this study is to assess the outcome in patients aged 90 or older, for whom ruptured aneurysms were treated by clipping. METHODS: We retrospectively reviewed the medical records of non-traumatic SAH patients who were hospitalized at the Chiba Neurosurgical Clinic between 2004 and 2013...
2016: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/27597383/cerebral-vasospasm-and-delayed-ischaemic-deficit-following-elective-aneurysm-clipping
#19
REVIEW
Anastasia Tsyben, Iddo Paldor, John Laidlaw
Although common after subarachnoid haemorrhage, cerebral vasospasm (CVS) and delayed ischaemic neurological deficit (DIND) rarely occur following elective clipping of unruptured aneurysms. The onset of this complication is variable and its pathophysiology is poorly understood. We report two patients with CVS associated with DIND following unruptured aneurysmal clipping. The literature is reviewed and the potential mechanisms in the context of patient presentations are discussed. A woman aged 53 and a man aged 70 were treated with elective clipping of unruptured middle cerebral artery aneurysms, the older patient also having an anterior communicating artery aneurysm clipped...
December 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27506843/-repeated-rupture-of-bilateral-internal-carotid-artery-aneurysms-in-a-short-period-in-association-with-polyarteritis-nodosa-a-case-report
#20
Takanori Miura, Jun Maruya, Jun Watanabe, Ryuta Sato, Takashi Hatakeyama, Keiichi Nishimaki
Cerebral involvement is rare in polyarteritis nodosa(PAN);furthermore, secondary intracranial hemorrhage due to cerebral aneurysm is extremely rare. We describe an unusual case of repeated subarachnoid hemorrhage(SAH)in a 64-year-old woman with a history of PAN. Initially, she developed severe headache(probable first SAH, day 0), and presented at our hospital with second severe headache with disturbed consciousness on day 6. Computed tomography(CT)revealed that SAH was mainly distributed in the right basal cistern and sylvian fissure(second SAH)...
August 2016: No Shinkei Geka. Neurological Surgery
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