keyword
MENU ▼
Read by QxMD icon Read
search

cerebral aneurysm rupture risk

keyword
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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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 5 pregnant women with cerebral aneurysms between 2005 and 2013. The outcome examined was development of subarachnoid hemorrhage...
November 16, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27744074/prevalence-of-asymptomatic-unruptured-intracranial-aneurysms-in-a-southeast-asian-population
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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...
September 2, 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
#16
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
https://www.readbyqxmd.com/read/27504449/biology-of-saccular-cerebral-aneurysms-a-review-of-current-understanding-and-future-directions
#17
REVIEW
Vernard S Fennell, M Yashar S Kalani, Gursant Atwal, Nikolay L Martirosyan, Robert F Spetzler
Understanding the biology of intracranial aneurysms is a clinical quandary. How these aneurysms form, progress, and rupture is poorly understood. Evidence indicates that well-established risk factors play a critical role, along with immunologic factors, in their development and clinical outcomes. Much of the expanding knowledge of the inception, progression, and rupture of intracranial aneurysms implicates inflammation as a critical mediator of aneurysm pathogenesis. Thus, therapeutic targets exploiting this arm of aneurysm pathogenesis have been implemented, often with promising outcomes...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/27476925/distal-anterior-cerebral-artery-aneyrysms-pericallosal-artery-a-report-of-19-cases-and-literature-review
#18
Paulo Henrique Aguiar, Iracema Araújo ESTEVãO, César Cozar Pacheco, Marcos Vinicius Maldaun, Carlos Tadeu Oliveira
AIM: The aim of this retrospective study was to evaluate the follow-up results of patients who received surgical treatment for distal anterior cerebral artery aneurysms (pericallosal artery) and correlate these findings with the literature. MATERIAL AND METHODS: During the period of 2000 to 2013, 19 cases were operated, conducted preoperative angiographic and CT study. To classify the CT findings were used Fisher and World Federation of Neuro Surgeons (WFNS) SAH grading scales...
April 20, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27470960/-the-causes-and-strategies-for-intraoperative-rupture-during-clipping-the-anterior-circulation-aneurysms
#19
H Y Li, H Chen, Y M Li, Y Li, X W Shi
OBJECTIVE: To investigate the causes and strategies for intraoperative rupture during clipping the anterior circulation aneurysms. METHODS: Nineteen patients with anterior circulation aneurysms ruptured during clipping, who admitted to the Department of Neurosurgery, Henan Provincial People's Hospital from November 2012 to February 2014, were enrolled. Their clinical data were analyzed retrospectively to summarize the causes and strategies for intraoperative rupture...
July 5, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27446925/personalized-medicine-in-cerebrovascular-neurosurgery-precision-neurosurgical-management-of-cerebral-aneurysms-and-subarachnoid-hemorrhage
#20
REVIEW
Achal Singh Achrol, Gary K Steinberg
Cerebral aneurysms are common vascular lesions. Little is known about the pathogenesis of these lesions and the process by which they destabilize and progress to rupture. Treatment decisions are motivated by a desire to prevent rupture and the devastating morbidity and mortality associated with resulting subarachnoid hemorrhage (SAH). For patients presenting with SAH, urgent intervention is required to stabilize the lesion and prevent re-rupture. Those patients fortunate enough to survive a presenting SAH and subsequent securing of their aneurysm must still face a spectrum of secondary sequelae, which can include cerebral vasospasm, delayed ischemia, seizures, cerebral edema, hydrocephalus, and endocrinologic and catecholamine-induced systemic dysfunction in cardiac, pulmonary, and renal systems...
2016: Frontiers in Surgery
keyword
keyword
19222
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"