scholarly journals Risk Factors for Ischemic Complications following Pipeline Embolization Device Treatment of Intracranial Aneurysms: Results from the IntrePED Study

2016 ◽  
Vol 37 (9) ◽  
pp. 1673-1678 ◽  
Author(s):  
W. Brinjikji ◽  
G. Lanzino ◽  
H.J. Cloft ◽  
A.H. Siddiqui ◽  
E. Boccardi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Intracranial Aneurysms ◽  
Pipeline Embolization Device ◽  
Ischemic Complications

Relationship between low response to clopidogrel and periprocedural ischemic events with coil embolization for intracranial aneurysms

2015 ◽  
Vol 8 (7) ◽  
pp. 752-755 ◽  
Author(s):  
Takumi Asai ◽  
Shigeru Miyachi ◽  
Takashi Izumi ◽  
Noriaki Matsubara ◽  
Kenichi Haraguchi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Coil Embolization ◽  
Diffusion Weighted Imaging ◽  
Intracranial Aneurysms ◽  
Endovascular Coiling ◽  
Low Responders ◽  
Ischemic Complications ◽  
Independent Risk Factors ◽  
Aggregation Activity ◽  
Ischemic Events

ObjectivesLow response to antiplatelet drugs is one of the risk factors for ischemic events. We examined the influence of low response to clopidogrel on symptomatic ischemic events and new ischemic MRI lesions with endovascular intracranial aneurysmal coil embolization.Materials and methodsBetween August 2010 and July 2013, 189 procedures in 181 consecutive patients who underwent endovascular coiling and received clopidogrel before treatment were investigated retrospectively. Platelet aggregation activity was examined by VerifyNow analysis. Low response to clopidogrel was defined as P2Y12 reaction units ≥230 in this study. Symptomatic ischemic complications within 30 days and postoperative new ischemic lesions on MRI–diffusion weighted imaging were evaluated.Results66 of 189 (34.9%) cases were low responders to clopidogrel. Ischemic complications occurred in 2 of 66 (3.0%) low responders compared with 6 of 123 (4.9%) responders (p=0.72). A new high intensity spot larger than 5 mm was significantly more frequent in low responders (26 of 66; 39.4%) than in responders (26 of 121; 21.2%; p=0.01). On multivariate analysis, independent risk factors for larger new ischemic lesions were low response to clopidogrel, smokers, posterior location, and aneurysms with a larger neck.ConclusionsLow response to clopidogrel had little effect on clinical outcome although it increased asymptomatic large ischemic lesions in this cohort.

scholarly journals High-Resolution Vessel Wall Magnetic Resonance Imaging of Small Unruptured Intracranial Aneurysms

2021 ◽  
Vol 10 (2) ◽  
pp. 225
Author(s):  
Łukasz Zwarzany ◽  
Ernest Tyburski ◽  
Wojciech Poncyljusz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
Aneurysm Rupture ◽  
Resonance Imaging ◽  
Aneurysm Wall ◽  
Conventional Risk Factors

Background: We decided to investigate whether aneurysm wall enhancement (AWE) on high-resolution vessel wall magnetic resonance imaging (HR VW-MRI) coexists with the conventional risk factors for aneurysm rupture. Methods: We performed HR VW-MRI in 46 patients with 64 unruptured small intracranial aneurysms. Patient demographics and clinical characteristics were recorded. The PHASES score was calculated for each aneurysm. Results: Of the 64 aneurysms, 15 (23.4%) showed wall enhancement on post-contrast HR VW-MRI. Aneurysms with wall enhancement had significantly larger size (p = 0.001), higher dome-to-neck ratio (p = 0.024), and a more irregular shape (p = 0.003) than aneurysms without wall enhancement. The proportion of aneurysms with wall enhancement was significantly higher in older patients (p = 0.011), and those with a history of prior aneurysmal SAH. The mean PHASES score was significantly higher in aneurysms with wall enhancement (p < 0.000). The multivariate logistic regression analysis revealed that aneurysm irregularity and the PHASES score are independently associated with the presence of AWE. Conclusions: Aneurysm wall enhancement on HR VW-MRI coexists with the conventional risk factors for aneurysm rupture.

RISK OF SHUNT-DEPENDENT HYDROCEPHALUS AFTER OCCLUSION OF RUPTURED INTRACRANIAL ANEURYSMS BY SURGICAL CLIPPING OR ENDOVASCULAR COILING

Neurosurgery ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 924-934 ◽  
Author(s):  
Jean G. de Oliveira ◽  
Jürgen Beck ◽  
Matthias Setzer ◽  
Rüdiger Gerlach ◽  
Hartmut Vatter ◽  
...  
Keyword(s):  
Risk Factors ◽  
Intraventricular Hemorrhage ◽  
Intracranial Aneurysms ◽  
Meta Analysis ◽  
Long Term Outcome ◽  
Acute Hydrocephalus ◽  
Angiographic Vasospasm ◽  
Fisher Grade ◽  
Shunt Dependency ◽  
Ruptured Intracranial Aneurysms

Abstract OBJECTIVE To compare the risk of shunt-dependent hydrocephalus after treatment of ruptured intracranial aneurysms by clipping versus coiling. METHODS We analyzed 596 patients prospectively added to our database from July of 1999 to November of 2005 concerning the risk of shunt dependency after clipping versus coiling. Factors analyzed included age; sex; Hunt and Hess grade; Fisher grade; acute hydrocephalus; intraventricular hemorrhage; angiographic vasospasm; and number, size, and location of aneurysms. In addition, a meta-analysis of available data from the literature was performed identifying four studies with quantitative data on the frequency of clip, coil, and shunt dependency. RESULTS The institutional series revealed Hunt and Hess grade, Fisher grade, acute hydrocephalus, intraventricular hemorrhage, and angiographic vasospasm as significant (P &lt; 0.05) risk factors for shunt dependency after a univariate analysis. In a multivariate logistic regression analysis, we isolated intraventricular hemorrhage, acute hydrocephalus, and angiographic vasospasm as independent, significant risk factors for shunt dependency. The meta-analysis, including the current data, revealed a significantly higher risk for shunt dependency after coiling than after clipping (P = 0.01). CONCLUSION Clipping of a ruptured aneurysm may be associated with a lower risk for developing shunt dependency, possibly by clot removal. This might influence long-term outcome and surgical decision making.

Demographic and clinical predictors of multiple intracranial aneurysms in patients with subarachnoid hemorrhage

2018 ◽  
Vol 128 (4) ◽  
pp. 961-968 ◽  
Author(s):  
Michael M. McDowell ◽  
Yin Zhao ◽  
Christopher P. Kellner ◽  
Sunjay M. Barton ◽  
Eric Sussman ◽  
...  
Keyword(s):  
Risk Factors ◽  
Subarachnoid Hemorrhage ◽  
Intracranial Aneurysms ◽  
Posterior Circulation ◽  
Smoking History ◽  
Relative Risk Ratio ◽  
Base Case ◽  
Black Race ◽  
Multiple Aneurysms ◽  
Female Sex

OBJECTIVEPathophysiological differences that underlie the development and subsequent growth of multiple aneurysms may exist. In this study, the authors assessed the factors associated with the occurrence of multiple aneurysms in patients presenting with aneurysmal subarachnoid hemorrhage (SAH).METHODSConsecutive patients presenting with aneurysmal SAH between 1996 and 2012 were prospectively enrolled in the Subarachnoid Hemorrhage Outcome Project. Patients harboring 1, 2, or 3 or more aneurysms were stratified into groups, and the clinical and radiological characteristics of each group were compared using multivariate logistic regression.RESULTSOf 1277 patients with ruptured intracranial aneurysms, 890 had 1 aneurysm, 267 had 2 aneurysms, and 120 had 3 or more aneurysms. On multinomial regression using the single-aneurysm cohort as base case, risk factors for patients presenting with 2 aneurysms were female sex (relative risk ratio [RRR] 1.80, p < 0.001), higher body mass index (BMI) (RRR 1.02, p = 0.003), more years of smoking (RRR = 1.01, p = 0.004), and black race (RRR 1.83, p = 0.001). The risk factors for patients presenting with 3 or more aneurysms were female sex (RRR 3.10, p < 0.001), higher BMI (RRR 1.03, p < 0.001), aneurysm in the posterior circulation (RRR 2.59, p < 0.001), and black race (RRR 2.15, p = 0.001). Female sex, longer smoking history, aneurysms in the posterior circulation, BMI, and black race were independently associated with the development of multiple aneurysms in our adjusted multivariate multinomial model.CONCLUSIONSSignificant demographic and clinical differences are found between patients presenting with single and multiple aneurysms in the setting of aneurysmal SAH. These predictors of multiple aneurysms likely reflect a predisposition toward inflammation and endothelial injury.

scholarly journals Subarachnoid hemorrhage after surgical treatment of unruptured intracranial aneurysms

2018 ◽  
Vol 129 (2) ◽  
pp. 490-497
Author(s):  
Hidetoshi Matsukawa ◽  
Hiroyasu Kamiyama ◽  
Toshiyuki Tsuboi ◽  
Kosumo Noda ◽  
Nakao Ota ◽  
...  
Keyword(s):  
Risk Factors ◽  
Subarachnoid Hemorrhage ◽  
Surgical Treatment ◽  
Incidence Rate ◽  
Intracranial Aneurysms ◽  
Annual Incidence ◽  
Annual Incidence Rate ◽  
Excellent Outcome ◽  
Unruptured Intracranial Aneurysms ◽  
Average Annual Incidence

OBJECTIVEOnly a few previous studies have investigated subarachnoid hemorrhage (SAH) after surgical treatment in patients with unruptured intracranial aneurysms (UIAs). Given the improvement in long-term outcomes of embolization, more extensive data are needed concerning the true rupture rates after microsurgery in order to provide reliable information for treatment decisions. The purpose of this study was to investigate the incidence of and risk factors for postoperative SAH in patients with surgically treated UIAs.METHODSData from 702 consecutive patients harboring 852 surgically treated UIAs were evaluated. Surgical treatments included neck clipping (complete or incomplete), coating/wrapping, trapping, proximal occlusion, and bypass surgery. Clippable UIAs were defined as UIAs treated by complete neck clipping. The annual incidence of postoperative SAH and risk factors for SAH were studied using Kaplan-Meier survival analysis and Cox proportional hazards regression models.RESULTSThe patients’ median age was 64 years (interquartile range [IQR] 56–71 years). Of 852 UIAs, 767 were clippable and 85 were not. The mean duration of follow-up was 731 days (SD 380 days). During 1708 aneurysm years, there were 4 episodes of SAH, giving an overall average annual incidence rate of 0.23% (95% CI 0.12%–0.59%) and an average annual incidence rate of 0.065% (95% CI 0.0017%–0.37%) for clippable UIAs (1 episode of SAH, 1552 aneurysm-years). Basilar artery location (adjusted hazard ratio [HR] 23, 95% CI 2.0–255, p = 0.0012) and unclippable UIA status (adjusted HR 15, 95% CI 1.1–215, p = 0.046) were significantly related to postoperative SAH. An excellent outcome (modified Rankin Scale score of 0 or 1) was achieved in 816 (95.7%) of 852 cases overall and in 748 (98%) of 767 clippable UIAs at 12 months.CONCLUSIONSIn this large case series, microsurgical treatment of UIAs was found to be safe and effective. Aneurysm location and unclippable morphologies were related to postoperative SAH in patients with surgically treated UIAs.

scholarly journals MR-DWI–Positive Lesions and Symptomatic Ischemic Complications After Coiling of Unruptured Intracranial Aneurysms

Stroke ◽  
2013 ◽  
Vol 44 (3) ◽  
pp. 789-791 ◽  
Author(s):  
Dong-Hun Kang ◽  
Byung Moon Kim ◽  
Dong Joon Kim ◽  
Sang Hyun Suh ◽  
Dong Ik Kim ◽  
...  
Keyword(s):  
Intracranial Aneurysms ◽  
Unruptured Intracranial Aneurysms ◽  
Ischemic Complications
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