Matched Comparison of Flow Diversion and Coiling in Small, Noncomplex Intracranial Aneurysms

Neurosurgery ◽  
2017 ◽  
Vol 81 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Nohra Chalouhi ◽  
Badih Daou ◽  
Guilherme Barros ◽  
Robert M. Starke ◽  
Ameet Chitale ◽  
...  

Abstract BACKGROUND: Flow diversion is typically reserved for large, giant, or morphologically complex aneurysms. Coiling remains a first-line treatment for small, morphologically simple aneurysms. OBJECTIVE: To compare coiling and flow diversion in small, uncomplicated intracranial aneurysms (typically amenable to coiling). METHODS: Forty patients treated with the pipeline embolization device (PED) for small (<10 mm), morphologically simple aneurysms that would have also been amenable to coiling were identified. These patients were matched in a 1:1 fashion with 40 patients with comparable aneurysms treated with coiling. Matching was based on age, gender, aneurysm size, and aneurysm morphology. RESULTS: The 2 groups were comparable with regard to baseline characteristics including age, gender, and aneurysm size. The complication rate did not differ between the 2 groups (2.5% with coiling vs 5% with PED; P = .6). Multivariate analysis did not identify any predictor of complications. Complete occlusion (100%) at follow-up was significantly higher in patients treated with PED (70%) than coiling (47.5%, P = .04). In multivariate analysis, treatment with PED predicted aneurysm obliteration (P = .04). A significantly higher proportion of coiled patients (32.5%) required retreatment compared with flow diversion (5%, P = .003). In multivariate analysis, coiling predicted retreatment (P = .006). All patients achieved a favorable outcome (modified Rankin Scale: 0-2) regardless of group. CONCLUSION: This matched analysis suggests that flow diversion provides higher occlusion rates, lower retreatment rates, and no additional morbidity compared with coiling in small, simple aneurysms amenable to both techniques. These results suggest a potential benefit for flow diversion over coiling even in small, uncomplicated aneurysms.

2019 ◽  
Vol 11 (9) ◽  
pp. 903-907 ◽  
Author(s):  
Christopher T Primiani ◽  
Zeguang Ren ◽  
Peter Kan ◽  
Ricardo Hanel ◽  
Vitor Mendes Pereira ◽  
...  

BackgroundIntracranial aneurysms located in the distal vessels are rare and remain a challenge to treat through surgical or endovascular interventions.ObjectiveTo describe a multicenter approach with flow diversion using the pipeline embolization device (PED) for treatment of distal intracranial aneurysms.MethodsCases of distal intracranial aneurysms defined as starting on or beyond the A2 anterior cerebral artery, M2 middle cerebral artery, and P2 posterior cerebral artery segments were included in the final analysis.Results65 patients with distal aneurysms treated with the PED were analyzed. Median aneurysm size at the largest diameter was 7.0 mm, 60% were of a saccular morphology, and 9/65 (13.8%) patients presented in the setting of acute rupture. Angiographic follow-up data were available for 53 patients, with a median follow-up time of 6 months: 44/53 (83%) aneurysms showed complete obliteration, 7/53 (13.2%) showed reduced filling, and 2/53 (3%) showed persistent filling. There was no association between patient characteristics, including aneurysm size (P=0.36), parent vessel diameter (P=0.27), location (P=0.81), morphology (P=0.63), ruptured status on admission (P=0.57), or evidence of angiographic occlusion at the end of the embolization procedure (P=0.49). Clinical outcome data were available for 60/65 patients: 95% (57/60) had good clinical outcome (modified Rankin Scale score of 0–2) at 3 months.ConclusionsThis large multicenter study of patients with A2, M2, and P2 distal aneurysms treated with the PED showed that flow diversion may be an effective treatment approach for this rare type of vascular pathology. The procedural compilation rate of 7.7% indicates the need for further studies as the flow diversion technology constantly evolves.


Neurosurgery ◽  
2013 ◽  
Vol 72 (6) ◽  
pp. 953-959 ◽  
Author(s):  
Rohan Chitale ◽  
Nohra Chalouhi ◽  
Thana Theofanis ◽  
Robert M. Starke ◽  
Peter Amenta ◽  
...  

Abstract BACKGROUND: Stent-assisted coiling (SAC) and balloon-assisted coiling (BAC) are 2 well-established techniques for the treatment of complex and wide-necked intracranial aneurysms. Most clinicians are reluctant to perform SAC in the setting of subarachnoid hemorrhage because of the need for dual antiplatelet therapy. OBJECTIVE: To compare the safety and efficacy of SAC and BAC in acutely ruptured complex and wide-necked aneurysms. METHODS: Forty-four patients underwent SAC and 40 underwent BAC. Patients treated with SAC received antiplatelet medications. Perioperative adverse events and outcomes at follow-up (mean, 7.4 months) were retrospectively studied. RESULTS: The 2 groups were statistically comparable with respect to all baseline characteristics except for older age in SAC patients (65.6 vs 56.5 years; P = .009). A higher proportion of SAC patients also had poor Hunt and Hess grades (III-V; 70.5% vs 55%; P = .l4). Hemorrhagic, thromboembolic, and overall procedural complications occurred in 6.8%, 11.4%, and 18.2% of the SAC group vs 2.5%, 7.5%, and 10% of the BAC group, respectively (P = .5, P = .6, P = .3, respectively). Favorable outcomes (modified Rankin Scale score 0-2) at follow-up were seen in 61.0% of the SAC group vs 77% of the BAC group (P = .1). In multivariable analysis, after controlling for differences in baseline characteristics, the type of treatment was not a predictor of procedural complications or clinical outcome. CONCLUSION: In this study, procedural complications and clinical outcomes did not differ significantly between SAC and BAC in patients with acutely ruptured aneurysms. SAC may be an acceptable alternative to BAC for complex aneurysms in the acute phase of subarachnoid hemorrhage.


Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Ahmad Sweid ◽  
Robert M Starke ◽  
Nabeel Herial ◽  
Nohra Chalouhi ◽  
Somnath Das ◽  
...  

Introduction: Flow diversion has introduced a paradigm shift in the endovascular field by providing a more physiological approach to treat aneurysms. We aim to assess the efficacy and safety of flow diversion in treating a diverse large cohort of aneurysms with up to 5 years follow up. Methods: This is an analysis of a prospectively maintained database at a single-institution. Patients included in the analysis were consecutively treated patients between 2010 and 2019. Results: A total of 598 aneurysms were treated during a period extending from 2010-2019 (84.28% females, mean age 55.5 years, av. size 8.49mm). Adequate aneurysm occlusion rates were 63%(376), 73%(436), and 79%(472) at 6 ,12 and 24-month follow-up, respectively. The complete occlusion rate was 75% at a mean duration of 9 months. Of all patients, 8%(48) required retreatment. On multivariate analysis decreasing PED length (0.35,p=0.01), decreasing PED width (0.63,p=0.01), decreasing dome size (0.46,p=0.01), decreased neck width (0.46,p=0.01), absence of wall irregularity (0.60,p=0.01), lack of branching vessel (0.57,p=0.01), and previous treatment (0.56,p=0.05) were independent predictors of aneurysm occlusion.Morbidity rate occurred at a rate of 5.8% and morality at a rate of 2.2%. Ischemic stroke occurred at a rate of 3%. Delayed aneurysmal rupture and distal intraparenchymal hemorrhage occurred at a rate of 3.7%. On multivariate analysis; predictors of stroke were aneurysm size > 15mm. Predictors of DAR/DIPH were increasing aneurysm size, an increasing number of PED used, subjects presenting with a symptomatic aneurysm. Predictors of in-stent stenosis was balloon angioplasty. While increasing age and previous treatment were negatively associated with in-stent stenosis. Predictors of Morbidity were posterior circulation aneurysms, symptomatic presentation, increasing aneurysm size, and hypertension. While, predictors of unfavorable outcome were age > 75, acute SAH, increasing aneurysm size, and posterior circulation aneurysms. Conclusion: At a high-volume center with experienced operators, treatment with PED was associated with durable aneurysm occlusion and low risk of complications. The results support the increasing use of flow diverters.


2016 ◽  
Vol 125 (3) ◽  
pp. 705-712 ◽  
Author(s):  
Wataru Ishida ◽  
Masayuki Sato ◽  
Tatsuo Amano ◽  
Yuji Matsumaru

OBJECTIVE The importance of a framing coil (FC)—the first coil inserted into an aneurysm during endovascular coiling, also called a lead coil or a first coil—is recognized, but its impact on long-term outcomes, including recanalization and retreatment, is not well established. The purposes of this study were to test the hypothesis that the FC is a significant factor for aneurysmal recurrence and to provide some insights on appropriate FC selection. METHODS The authors retrospectively reviewed endovascular coiling for 280 unruptured intracranial aneurysms and gathered data on age, sex, aneurysm location, aneurysm morphology, maximal size, neck width, adjunctive techniques, recanalization, retreatment, follow-up periods, total volume packing density (VPD), volume packing density of the FC, and framing coil percentage (FCP; the percentage of FC volume in total coil volume) to clarify the associated factors for aneurysmal recurrence. RESULTS Of 236 aneurysms included in this study, 33 (14.0%) had recanalization, and 18 (7.6%) needed retreatment during a mean follow-up period of 37.7 ± 16.1 months. In multivariate analysis, aneurysm size (odds ratio [OR] = 1.29, p < 0.001), FCP < 32% (OR 3.54, p = 0.009), and VPD < 25% (OR 2.96, p = 0.015) were significantly associated with recanalization, while aneurysm size (OR 1.25, p < 0.001) and FCP < 32% (OR 6.91, p = 0.017) were significant predictors of retreatment. VPD as a continuous value or VPD with any cutoff value could not predict retreatment with statistical significance in multivariate analysis. CONCLUSIONS FCP, which is equal to the FC volume as a percentage of the total coil volume and is unaffected by the morphology of the aneurysm or the measurement error in aneurysm length, width, or height, is a novel predictor of recanalization and retreatment and is more significantly predictive of retreatment than VPD. To select FCs large enough to meet the condition of FCP ≥ 32% is a potential relevant factor for better long-term outcomes. These findings support our hypothesis that the FC is a significant factor for aneurysmal recurrence.


Neurosurgery ◽  
2017 ◽  
Vol 64 (CN_suppl_1) ◽  
pp. 228-228
Author(s):  
Erick Michael Westbroek ◽  
Matthew Bender ◽  
Narlin B Beaty ◽  
Bowen Jiang ◽  
Risheng Xu AB ◽  
...  

Abstract INTRODUCTION ISAT demonstrated that coiling is effective for aneurysm treatment in subarachnoid hemorrhage (SAH); however, complete occlusion of wide-necked aneurysms frequently requires adjuvants relatively contraindicated in SAH. As such, a limited “dome occlusive” strategy is often pursued in the setting of SAH. We report a single institution series of coiling of acutely ruptured aneurysms followed by delayed flow diversion for definitive, curative occlusion. METHODS A prospectively collected IRB-approved database was screened for patients with aneurysmal SAH who were initially treated by coil embolization followed by planned flow diversion at a single academic medical institution. Peri-procedural outcomes, complications, and angiographic follow-up were analyzed. RESULTS >50 patients underwent both acute coiling followed by delayed, planned flow diversion. Average aneurysm size on initial presentation was 9.5 mm. Common aneurysm locations included Pcomm (36%), Acomm (30%), MCA (10%), ACA (10%), and vertebral (5%). Dome occlusion was achieved in all cases following initial coiling. Second-stage implantation of a flow diverting stent was achieved in 49/50 cases (98%). Follow-up angiography was available for 33/50 patients (66%), with mean follow-up of 11 months. 27 patients (82%) had complete angiographic occlusion at last follow up. All patients with residual filling at follow-up still had dome occlusion. There were no mortalities (0%). Major complication rate for stage I coiling was 2% (1 patient with intra-procedural aneurysm re-rupture causing increase in a previous ICH). Major complication rate for stage 2 flow diversion was 2% (1 patient with ischemic stroke following noncompliance with dual antiplatelet regimen). Minor complications occurred in 2 additional patients (4%) with transient neurological deficits. CONCLUSION Staged endovascular treatment of ruptured intracranial aneurysms with acute dome-occlusive coil embolization followed by delayed flow diversion is a safe and effective treatment strategy.


Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Robert M Starke ◽  
Nohra Chalouhi ◽  
Muhammad S Ali ◽  
David L Penn ◽  
Stavropoula I Tjoumakaris ◽  
...  

Purpose: In this study we assess predictors of outcome following endovascular treatment of small ruptured intracranial aneurysms (SRA). Methods: Between 2004 and 2011, 91 patients with SRA (≤ 3 mm) were treated at our institution. Multivariate analysis was carried out to assess predictors of endovascular related complications, aneurysm obliteration (>95%), recanalization, and favorable outcome (Glasgow Outcome Scale 3-5). Results: Endovascular treatment was aborted in 9 of 91 patients (9.9%). Procedure-related complications occurred in 8 of 82 patients (9.8%) of which 5 were transient and 3 were permanent. Three patients (3.7%) undergoing endovascular therapy experienced an intra-procedural aneurysm rupture. Three of 9 patients (33.3%) treated with stent or balloon assisted coiling experienced peri-procedural complications compared to 5 of 73 patients (6.8%) receiving only coils or Onyx (p=0.039). There were no procedural deaths or rehemorrhages. Rates of recanalization and retreatment were 18.2% and 12.7%, respectively. No factors predicted initial occlusion or recanalization. In multivariate analysis pre-treatment factors predictive of favorable outcome included younger age (OR=0.94; 95% CI 0.91-0.99, p=0.017), larger aneurysm size (OR=3.4; 95% CI 1.02-11.11, p=0.045), Hunt and Hess grade (OR=0.38; 95% CI 0.19-0.75, p=0.005), and location (OR=5.12; 95% CI 1.29-20.25, p=0.02). When assessing treatment and post-treatment variables, vasospasm was the only additional covariate predictive of poor outcome (OR=5.90; 95% CI 1.34=25.93, p=0.019). Conclusions: The majority of SRA can be treated with endovascular therapy and limited complications. Overall predictors of outcome for patients undergoing endovascular treatment of SRA include age, aneurysm size, Hunt and Hess grade, location, and post-treatment vasospasm.


2015 ◽  
Vol 21 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Lee-Anne Slater ◽  
Cathy Soufan ◽  
Michael Holt ◽  
Winston Chong

Alterations in aneurysm size and mass effect can result in alleviation or aggravation of symptoms. We assessed the effects of flow diversion with SILK stents on aneurysm sac size and associated factors. A retrospective evaluation of 14 aneurysms treated with SILK stents alone with MRI follow-up was performed. Aneurysm sac size was measured using the sequence best demonstrating the sac. Aneurysm characteristics and flow-related enhancement on time of flight images were documented. Clinical histories were reviewed for evolution of symptoms. Complete collapse of the aneurysm sac was demonstrated at three and 18 months in 2/14 aneurysms. Increase in size was observed in 2/14 aneurysms with associated persistent flow on time of flight MRA. Blister formation with aggravation of symptoms was observed in one aneurysm, and subsequent decrease in size occurred after treatment with a second SILK. The other aneurysm which increased in size initially continued to enlarge asymptomatically despite retreatment with a second SILK, however at 24 months thrombosis of the sac and decrease in size was observed. The remaining 10/14 aneurysms decreased in size. Nine had corresponding MRA occlusion and the tenth demonstrated decreased but persistent flow on the time of flight MRA. No aneurysm with MRA occlusion increased in size. Decrease in sac size was associated with MRA occlusion in our study. Persistence of flow and blistering were associated with increased sac size. As previously demonstrated flow diversion may be effective in the treatment of large aneurysms presenting with mass effect, however rates of sac obliteration in this small series were not as high as previously reported.


2018 ◽  
Vol 7 (5) ◽  
pp. 218-232 ◽  
Author(s):  
Li-Mei Lin ◽  
Bowen Jiang ◽  
Jessica K. Campos ◽  
Narlin B. Beaty ◽  
Matthew T. Bender ◽  
...  

Background: Flow diversion with the Pipeline embolization device (PED) is an effective neuro­endovascular method and increasingly accepted for the treatment of cerebral aneurysms. Acute in situ thrombosis is a known complication of PED procedures. There is limited experience in the flow diversion literature on the use of abciximab (ReoPro) for the management of acute thrombus formation in PED cases. Methods: Data were collected retrospectively on patients who received intra-arterial (IA) ReoPro with or without subsequent intravenous (IV) infusion during PED flow diversion treatment of intracranial aneurysms. Results: A total of 30 cases in patients with a mean age of 56.7 years (range 36–84) and a mean aneurysm size of 8.6 mm (range 2–25) were identified to have intraprocedural thromboembolic complications during PED treatment. IA ReoPro was administered in all cases, with 20 cases receiving increments of 5-mg boluses and 10 cases receiving a 0.125 mg/kg IA bolus (half cardiac dosing). Complete or partial recanalization was achieved in 100% of the cases. IV ReoPro infusion at 0.125 μg/kg/min for 12 h was administered postprocedurally in 22 cases with a residual thrombus. Postprocedurally, 18 patients were transitioned from clopidogrel (Plavix) to prasugrel (Effient). The majority of the cases (23/30; 77%) were discharged home. Periprocedural intracranial hemorrhage was noted in 2 cases (7%) and radiographic infarct was noted in 4 cases (13%), with an overall mortality of 0% at the time of initial discharge. Clinical follow-up was available for 28/30 patients. The average duration of follow-up was 11.7 months, at which time 23/28 (82%) of the patients had a modified Rankin Scale score of 0. Conclusions: IA ReoPro administration is an effective and safe rescue strategy for the management of acute intraprocedural thromboembolic complications during PED treatment. Using a dosing strategy of either 5-mg increments or a 0.125 mg/kg IA bolus (half cardiac dosing) can provide high rates of recanalization with low rates of hemorrhagic complications and long-term morbidity.


2018 ◽  
Vol 11 (4) ◽  
pp. 396-399 ◽  
Author(s):  
Mario Martínez-Galdámez ◽  
Saleh M Lamin ◽  
Konstantinos G Lagios ◽  
Thomas Liebig ◽  
Elisa F Ciceri ◽  
...  

PurposeThe Pipeline Embolization Device (PED) is a routine first-line treatment option for intracranial aneurysms (IAs). The Pipeline Flex Embolization Device with Shield Technology (Pipeline Shield) is an updated version of the PED which has been modified to include a surface phosphorylcholine biocompatible polymer. Its early technical success and safety have been reported previously. Here, we assessed the long-term safety and efficacy of the Pipeline Shield for the treatment of IAs.Materials and methodsThe Pipeline Flex Embolization Device with Shield Technology (PFLEX) study was a prospective, single-arm, multicenter study for the treatment of unruptured IAs using the Pipeline Shield. The primary endpoint was a major stroke in the territory supplied by the treated artery or neurologic death at 1-year post-procedure. Angiographic outcomes were also assessed by an independent radiology laboratory at 6 months and 1 year.ResultsFifty patients (mean age, 53 years; 82% female) with 50 unruptured IAs were treated. Mean aneurysm diameter was 8.82±6.15 mm. Of the target aneurysms, 38/50 (76%) were small (<10 mm), 11/50 (22%) were large (≥10 and<25 mm), and 1/50 (2%) was giant (≥25 mm). Forty-seven (94%) were located in the internal carotid artery and three (6%) in the vertebral artery. At 1-year post-procedure, no major strokes or neurologic deaths were reported, and complete occlusion was achieved in 27/33 (81.8%). There were no instances of aneurysm recurrence or retreatment.ConclusionsOur 1-year follow-up concerning angiographic and safety outcomes corroborate previous evidence that the Pipeline Shield is a safe and effective treatment for IAs.Trial registration numberNCT02390037


Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 5836-5836
Author(s):  
Weiwei Sui ◽  
Dehui Zou ◽  
Gang An ◽  
Shuhui Deng ◽  
Yan Xu ◽  
...  

Abstract Objective: To evaluate the efficacy and long-term outcome of the total treatment of induction therapy, ASCT and consolidation and maintenance therapy. Methods: A retrospective analysis was made on in multiple myeloma patients in our center between April 1, 2003 and February 1, 2016. The 157 patietns received autologous hematopoietic stem cell transplantation and review the autologous transplantation of long-term follow-up results. Analysis of the effect of transplantation efficacy, the impact on survival remission of different transplantation depth, transplantation in first line or not, salvage transplantation, prognosis of different staging system and other factors. Results: The baseline characteristics of the patients were shown in table 1. Overall patient ASCT before total effective rate (ORR) was 93.6%, in which the complete remission (CR) ratio was 33.1%. After ASCT, the best treatment response rate of PR was 80.3%, and the rate of CR was 58.6%. 91.69 months of median follow-up, patients with an overall survival (OS) and progression free survival (PFS) respectively 91.69 and 50.76 months; in 2005 before the median OS and PFS 39.0m and 23.0m. In 2005 after respectively and 56.41m 120.90m, P = 0.000. The median OS and PFS in the first line transplantation group and salvage transplantation group were vs 54.21m 39.0m and vs 7.09m 119.0m (P value was 0). 136 cases of patients with R-ISS stage, I, II, III of the patients with the median survival time were 120.90m (n=46), 86.43m (n=69), 35.65m (n=21), there were significant differences between groups, p=0.000. Each period of PFS were 72.11m, 51.84m, 28.09m, I and II, III,, p=0.001 and p=0.03, while there was no significant difference between II and III, p=0.122. The received autologous transplantation as first-line and salvage treatment of patients with subgroup survival analysis, median OS of the R-ISS stage III patients and different 15.84m 35.65m, P = 0.031; two groups of patients the median PFS (phase I: 91.69m vs18.92m; II: vs 16.69m 53.42m; phase III: vs 5.91m 28.52m) have difference (P = 0.000). In the first-line transplantation group, transplantation is more than or equal to PR and did not get effective PR group between OS were significantly different; before transplantation achieved CR, PR but did not obtain Cr and did not get effective PR group between PFS were significantly different; after transplantation and achieved CR CR did not get the patients had a median PFS were 65.57m 48.13m, P = 0.039 and median OS no difference. Accept any kind of noval agent- based chemotherapy were significantly longer OS and PFS than traditional chemotherapy (P = 0.001, P = 0.004) .There was no obvious difference on median OS between based regimen (bortezomib group median OS: NR; thalidomide group:120.90m); PFS in thalidomide group (median PFS : NR vs 54.21m) significantly prolonged (P = 0.010). By comparing the baseline characteristics of the two groups, it was found that the PFS was significantly shorter in the bortezomib group with an extra medullary lesion. Multivariate analysis showed that only R-ISS and the depth of remission before transplantation had effect on OS (p=0.003) and PFS (p=0.036) respectively. Conclusion: The total treatment of novel agent-based chemotherapy and ASCT for transplantation-eligible multiple myeloma patients is effective, further improve the remission rate and remission depth, prolong PFS and OS, the overall median survival up to 120.9m. First line transplantation can significantly prolong the OS and PFS compared with salvage transplantation. R-ISS and pre-transplant remission depth are prognostic factors influencing survival of patients. The total treatment to thalidomide based without extramedullary perhaps makes patients get long-term survival. Disclosures No relevant conflicts of interest to declare.


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