This site usescookies, tags, and tracking settings to store information that help give you the very best browsing experience. Dismiss this warning

Filter

Refine by Publication

Refine by Date
—

Refine by Access

  • Print
  • Save

Search Results

You are looking at1-6of6items for

  • Author or Editor: Adam A. Dmytriwx
  • Refine by Access: allx
Clear All Modify Search
Free access

The Pipeline Embolization Device: a decade of lessons learned in the treatment of posterior circulation aneurysms in a multicenter cohort

Adam A. Dmytriw, Mahmoud Dibas, Nimer Adeeb, Mohamed M. Salem, Arsalaan Salehani, Muhammad Waqas, Amro Saad Aldine, Vincent M. Tutino, Christopher S. Ogilvy, Adnan H. Siddiqui, Mark R. Harrigan, Ajith J. Thomas, Hugo Cuellar, and Christoph J. Griessenauer

OBJECTIVE

管道设备(PED)栓塞prompted a paradigm shift in the approach to posterior circulation aneurysms. The year 2021 marks a decade since FDA approval of this flow diverter, and during this time operators have adapted to its off-label uses. The authors examined whether case selection, practice trends, and patient outcomes have changed over this 10-year period.

开云体育世界杯赔率

This study is a retrospective review of consecutive posterior circulation aneurysms managed with the PED at four academic institutions in the US between January 1, 2011, and January 1, 2021. Factors related to case selection, rates of aneurysm occlusion, or complications were identified and evaluated. Angiographic outcomes as well as thromboembolic and hemorrhagic complications were investigated.

RESULTS

This study included 117 patients (median age 60 years). At a median follow-up of 12 months, adequate occlusion (> 90%) was attained in 73.2% of aneurysms. Aneurysm occlusion rates were similar over the study interval. Thromboembolic and hemorrhagic complications were reported in 12.0% and 6.0% of the procedures, respectively. There was a nonsignificant trend toward a decline in the rate of thromboembolic (14.1% in 2011–2015 vs 9.4% in 2016–2021, p = 0.443) and hemorrhagic (9.4% in 2011–2015 vs 1.9% in 2016–2021, p = 0.089) complications.

CONCLUSIONS

The authors observed a trend toward a decline in the rate of thromboembolic and hemorrhagic complications with improved operator experience in using the PED for posterior circulation aneurysms. The use of single-device PED flow diversion significantly increased, as did the tendency to treat smaller aneurysms and observe large unruptured fusiform/dolichoectatic lesions. These findings reflect changes attributable to evolving judgment with maturing experience in PED use.

InJournal of Neurosurgery Volume 137: Issue 5 (Nov 2022)

Full access

Pipeline embolization of posterior circulation aneurysms: a multicenter study of 131 aneurysms

Christoph j . Griessenauer Christopher s .奥美Nimer Adeeb, Adam A. Dmytriw, Paul M. Foreman, Hussain Shallwani, Nicola Limbucci, Salvatore Mangiafico, Ashish Kumar, Caterina Michelozzi, Timo Krings, Vitor Mendes Pereira, Charles C. Matouk, Mark R. Harrigan, Hakeem J. Shakir, Adnan H. Siddiqui, Elad I. Levy, Leonardo Renieri, Thomas R. Marotta, Christophe Cognard, and Ajith J. Thomas

OBJECTIVE

Flow diversion for posterior circulation aneurysms performed using the Pipeline embolization device (PED) constitutes an increasingly common off-label use for otherwise untreatable aneurysms. The safety and efficacy of this treatment modality has not been assessed in a multicenter study.

开云体育世界杯赔率

A retrospective review of prospectively maintained databases at 8 academic institutions was performed for the years 2009 to 2016 to identify patients with posterior circulation aneurysms treated with PED placement.

RESULTS

A total of 129 consecutive patients underwent 129 procedures to treat 131 aneurysms; 29 dissecting, 53 fusiform, and 49 saccular lesions were included. At a median follow-up of 11 months, complete and near-complete occlusion was recorded in 78.1%. Dissecting aneurysms had the highest occlusion rate and fusiform the lowest. Major complications were most frequent in fusiform aneurysms, whereas minor complications occurred most commonly in saccular aneurysms. In patients with saccular aneurysms, clopidogrel responders had a lower complication rate than did clopidogrel nonresponders. The majority of dissecting aneurysms were treated in the immediate or acute phase following subarachnoid hemorrhage, a circumstance that contributed to the highest mortality rate in those aneurysms.

CONCLUSIONS

In the largest series to date, fusiform aneurysms were found to have the lowest occlusion rate and the highest frequency of major complications. Dissecting aneurysms, frequently treated in the setting of subarachnoid hemorrhage, occluded most often and had a low complication rate. Saccular aneurysms were associated with predominantly minor complications, particularly in clopidogrel nonresponders.

InJournal of Neurosurgery Volume 130: Issue 3 (Mar 2019)

Free access

Vertebral artery aneurysms and the risk of cord infarction following spinal artery coverage during flow diversion

Adam A. Dmytriw, Anish Kapadia, Alejandro Enriquez-Marulanda, Carmen Parra-Fariñas, Anna Luisa Kühn, Patrick J. Nicholson, Muhammad Waqas, Leonardo Renieri, Caterina Michelozzi, Paul M. Foreman, Kevin Phan, I-Hsiao Yang, Vincent M. Tutino, Christopher S. Ogilvy, Ivan Radovanovic, Mark R. Harrigan, Adnan H. Siddiqui, Elad I. Levy, Nicola Limbucci, Christophe Cognard, Timo Krings, Vitor Mendes Pereira, Ajith J. Thomas, Thomas R. Marotta, and Christoph J. Griessenauer

OBJECTIVE

Coverage of the anterior spinal artery (ASA) ostia is a source of considerable consternation regarding flow diversion (FD) in vertebral artery (VA) aneurysms due to cord supply. The authors sought to assess the association between coverage of the ASA, posterior spinal artery (PSA), or lateral spinal artery (LSA) ostia when placing flow diverters in distal VAs and clinical outcomes, with emphasis on cord infarction.

开云体育世界杯赔率

A multicenter retrospective study of 7 institutions in which VA aneurysms were treated with FD between 2011 and 2019 was performed. The authors evaluated the risk of ASA and PSA/LSA occlusion, associated thromboembolic complication, complications overall, aneurysm occlusion status, and functional outcome.

RESULTS

患者60 63 VA和后下cerebellar artery aneurysms treated with FD were identified. The median aneurysm diameter was 7 mm and fusiform type was the commonest morphology (42.9%). During a procedure, 1 (61.7%) or 2 (33.3%) flow diverters were placed. Complete occlusion was achieved in 71.9%. Symptomatic thromboembolic complications occurred in 7.4% of cases and intracranial hemorrhage in 10.0% of cases. The ASA and PSA/LSA were identified in 51 (80.9%) and 35 (55.6%) complications and covered by the flow diverter in 29 (56.9%) and 13 (37.1%) of the procedures, respectively. Patency after flow diverter coverage on last follow-up was 89.2% for ASA and 100% for PSA/LSA, not significantly different between covered and noncovered groups (p = 0.5 and p > 0.99, respectively). No complications arose from coverage.

CONCLUSIONS

FD aneurysm treatment in the posterior circulation with coverage of ASA or PSA/LSA was not associated with higher rates of occlusion of these branches or any instances of cord infarction.

InJournal of Neurosurgery Volume 134: Issue 3 (Mar 2021)

Free access

Vertebral artery aneurysms and the risk of cord infarction following spinal artery coverage during flow diversion

Adam A. Dmytriw, Anish Kapadia, Alejandro Enriquez-Marulanda, Carmen Parra-Fariñas, Anna Luisa Kühn, Patrick J. Nicholson, Muhammad Waqas, Leonardo Renieri, Caterina Michelozzi, Paul M. Foreman, Kevin Phan, I-Hsiao Yang, Vincent M. Tutino, Christopher S. Ogilvy, Ivan Radovanovic, Mark R. Harrigan, Adnan H. Siddiqui, Elad I. Levy, Nicola Limbucci, Christophe Cognard, Timo Krings, Vitor Mendes Pereira, Ajith J. Thomas, Thomas R. Marotta, and Christoph J. Griessenauer

OBJECTIVE

Coverage of the anterior spinal artery (ASA) ostia is a source of considerable consternation regarding flow diversion (FD) in vertebral artery (VA) aneurysms due to cord supply. The authors sought to assess the association between coverage of the ASA, posterior spinal artery (PSA), or lateral spinal artery (LSA) ostia when placing flow diverters in distal VAs and clinical outcomes, with emphasis on cord infarction.

开云体育世界杯赔率

A multicenter retrospective study of 7 institutions in which VA aneurysms were treated with FD between 2011 and 2019 was performed. The authors evaluated the risk of ASA and PSA/LSA occlusion, associated thromboembolic complication, complications overall, aneurysm occlusion status, and functional outcome.

RESULTS

患者60 63 VA和后下cerebellar artery aneurysms treated with FD were identified. The median aneurysm diameter was 7 mm and fusiform type was the commonest morphology (42.9%). During a procedure, 1 (61.7%) or 2 (33.3%) flow diverters were placed. Complete occlusion was achieved in 71.9%. Symptomatic thromboembolic complications occurred in 7.4% of cases and intracranial hemorrhage in 10.0% of cases. The ASA and PSA/LSA were identified in 51 (80.9%) and 35 (55.6%) complications and covered by the flow diverter in 29 (56.9%) and 13 (37.1%) of the procedures, respectively. Patency after flow diverter coverage on last follow-up was 89.2% for ASA and 100% for PSA/LSA, not significantly different between covered and noncovered groups (p = 0.5 and p > 0.99, respectively). No complications arose from coverage.

CONCLUSIONS

FD aneurysm treatment in the posterior circulation with coverage of ASA or PSA/LSA was not associated with higher rates of occlusion of these branches or any instances of cord infarction.

InJournal of Neurosurgery Publish Before Print

Free access

Transradial versus transfemoral access for embolization of intracranial aneurysms with the Woven EndoBridge device: a propensity score–matched study

Mahmoud Dibas, Nimer Adeeb, Jose Danilo Bengzon Diestro, Hugo H. Cuellar, Ahmad Sweid, Sovann V. Lay, Adrien Guenego, Assala Aslan, Leonardo Renieri, Sri Hari Sundararajan, Guillaume Saliou, Markus Möhlenbruch, Robert W. Regenhardt, Justin E. Vranic, Ivan Lylyk, Paul M. Foreman, Jay A. Vachhani, Vedran Župančić, Muhammad U. Hafeez, Caleb Rutledge, Muhammad Waqas, Vincent M. Tutino, James D. Rabinov, Yifan Ren, Clemens M. Schirmer, Mariangela Piano, Anna L. Kühn, Caterina Michelozzi, Stéphanie Elens, Robert M. Starke, Ameer E. Hassan, Arsalaan Salehani, Peter Sporns, Jesse Jones, Marios Psychogios, Julian Spears, Boris Lubicz, Pietro Panni, Ajit S. Puri, Guglielmo Pero, Christoph J. Griessenauer, Hamed Asadi, Christopher J. Stapleton, Adnan Siddiqui, Andrew F. Ducruet, Felipe C. Albuquerque, Peter Kan, Vladimir Kalousek, Pedro Lylyk, Srikanth Boddu, Jared Knopman, Mohammad A. Aziz-Sultan, Nicola Limbucci, Pascal Jabbour, Christophe Cognard, Aman B. Patel, and Adam A. Dmytriw

OBJECTIVE

Transradial访问(TRA)通常用于neurointerventional procedures. This study compared the technical and clinical outcomes of the use of TRA versus those of transfemoral access (TFA) for intracranial aneurysm embolization with the Woven EndoBridge (WEB) device.

开云体育世界杯赔率

This is a secondary analysis of the Worldwide WEB Consortium, which comprises multicenter data related to adult patients with intracranial aneurysms who were managed with the WEB device. These aneurysms were categorized into two groups: those who were treated with TRA or TFA. Patient and aneurysm characteristics and technical and clinical outcomes were compared between groups. Propensity score matching (PSM) was used to match groups according to the following baseline characteristics: age, sex, subarachnoid hemorrhage, aneurysm location, bifurcation aneurysm, aneurysm with incorporated branch, neck width, aspect ratio, dome width, and elapsed time since the last follow-up imaging evaluation.

RESULTS

This study included 682 intracranial aneurysms (median [interquartile range] age 61.3 [53.0–68.0] years), of which 561 were treated with TFA and 121 with TRA. PSM resulted in 65 matched pairs. After PSM, both groups had similar characteristics, angiographic and functional outcomes, and rates of retreatment, thromboembolic and hemorrhagic complications, and death. TFA was associated with longer procedure length (median 96.5 minutes vs 72.0 minutes, p = 0.006) and fluoroscopy time (28.2 minutes vs 24.8 minutes, p = 0.037) as compared with TRA. On the other hand, deployment issues were more common in those treated with TRA, but none resulted in permanent complications.

CONCLUSIONS

TRA has comparable outcomes, with shorter procedure and fluoroscopy time, to TFA for aneurysm embolization with the WEB device.

InJournal of Neurosurgery Volume 137: Issue 4 (Oct 2022)

Restricted access

Stent-assisted Woven EndoBridge device for the treatment of intracranial aneurysms: an international multicenter study

Jose Danilo Bengzon Diestro, Mahmoud Dibas, Nimer Adeeb, Robert W. Regenhardt, Justin E. Vranic, Adrien Guenego, Sovann V. Lay, Leonardo Renieri, Ali Al Balushi, Eimad Shotar, Kévin Premat, Kareem El Namaani, Guillaume Saliou, Markus A. Möhlenbruch, Ivan Lylyk, Paul M. Foreman, Jay A. Vachhani, Vedran Župančić, Muhammad U. Hafeez, Caleb Rutledge, Hamid Rai, Vincent M. Tutino, Shervin Mirshahi, Sherief Ghozy, Pablo Harker, Naif M. Alotaibi, James D. Rabinov, Yifan Ren, Clemens M. Schirmer, Oded Goren, Mariangela Piano, Anna L. Kühn, Caterina Michelozzi, Stéphanie Elens, Robert M. Starke, Ameer E. Hassan, Arsalaan Salehani, Anh Nguyen, Jesse Jones, Marios Psychogios, Julian Spears, Thomas Marotta, Vitor Pereira, Carmen Parra-Fariñas, Maria Bres-Bullrich, Michael Mayich, Mohamed M. Salem, Jan-Karl Burkhardt, Brian T. Jankowitz, Ricardo A. Domingo, Thien Huynh, Rabih Tawk, Christian Ulfert, Boris Lubicz, Pietro Panni, Ajit S. Puri, Guglielmo Pero, Christoph J. Griessenauer, Hamed Asadi, Adnan Siddiqui, Andrew F. Ducruet, Felipe C. Albuquerque, Nirav Patel, Peter Kan, Vladimir Kalousek, Pedro Lylyk, Srikanth Boddu, Christopher J. Stapleton, Jared Knopman, Pascal Jabbour, Stavropoula Tjoumakaris, Frédéric Clarençon, Nicola Limbucci, Mohammad A. Aziz-Sultan, Hugo H. Cuellar-Saenz, Christophe Cognard, Aman B. Patel, and Adam A. Dmytriw

OBJECTIVE

The Woven EndoBridge (WEB) device is an intrasaccular flow disruptor designed for wide-necked bifurcation aneurysms. These aneurysms may require the use of a concomitant stent. The objective of this study was to determine the clinical and radiological outcomes of patients undergoing stent-assisted WEB treatment. In addition, the authors also sought to determine the predictors of a concomitant stent in aneurysms treated with the WEB device.

开云体育世界杯赔率

The data for this study were taken from the WorldWideWEB Consortium, an international multicenter cohort including patients treated with the WEB device. Aneurysms were classified into two groups based on treatment: stent-assisted WEB and WEB device alone. The authors compared clinical and radiological outcomes of both groups. Univariable and multivariable binary logistic regression analyses were performed to determine factors that predispose to stent use.

RESULTS

The study included 691 intracranial aneurysms (31 with stents and 660 without stents) treated with the WEB device. The adequate occlusion status did not differ between the two groups at the latest follow-up (83.3% vs 85.6%, p = 0.915). Patients who underwent stenting had more thromboembolic (32.3% vs 6.5%, p < 0.001) and procedural (16.1% vs 3.0%, p < 0.001) complications. Aneurysms treated with a concomitant stent had wider necks, greater heights, and lower dome-to-neck ratios. Increasing neck size was the only significant predictor for stent use.

CONCLUSIONS

This study demonstrates that there is no difference in the degree of aneurysm occlusion between the two groups; however, complications were more frequent in the stent group. In addition, a wider aneurysm neck predisposes to stent assistance in WEB-treated aneurysms.

InJournal of Neurosurgery Publish Before Print

Baidu
map