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ABSTRACT


01 marzo 2014

NEUROSURGERY. Percutaneous Transfacial Direct Embolization of an Intraosseous Dural Arteriovenous Fistula

Nerva, John D. MD*; Hallam, Danial K. MD*,‡; Ghodke, Basavaraj V. MD*,‡

BACKGROUND AND IMPORTANCE: An intraosseous dural arteriovenous fistula (DAVF) is a rare cerebrovascular disease. The fistulous connection occurs within intraosseous diploic or transosseous emissary veins causing dilated intraosseous vascular pouches. To the authors´ knowledge, this report describes the first percutaneous transfacial direct embolization of an intraosseous DAVF.

01 marzo 2014

NEUROSURGERY. Use of Buddy Wire to Facilitate Y-Configured Stent Placement in Middle Cerebral Artery Bifurcation Aneurysms With Daughter Branches Arising From the Sac: A Technical Note

Islak, Civan MD; Kizilkilic, Osman MD; Kocak, Burak MD; Saglam, Muzaffer MD; Yildiz, Bulent MD; Kocer, Naci MD

BACKGROUND AND IMPORTANCE: Endovascular treatment of geometrically complex bifurcation aneurysms using a standard Y-configured stenting technique might be extremely difficult, particularly in aneurysms with daughter branches that acutely arise from the aneurysm sac itself. In those cases, deployment of the second stent through interstices of the first stent could be troublesome because of untoward angular changes in the vascular bifurcation prompted by angular changes resulting from placement of the first stent. Here, we describe a novel application of the buddy wire technique to facilitate Y-configured stenting in middle cerebral artery (MCA) bifurcation aneurysms with unfavorable anatomic configuration.

01 marzo 2014

NEUROSURGERY. Progressive Deconstruction: A Novel Aneurysm Treatment Using the Pipeline Embolization Device for Competitive Flow Diversion: Case Report

Wajnberg, Eduardo MSc, PhD*; Silva, Thiago S. MD‡; Johnson, Andrew K. MD§; Lopes, Demetrius K. MD‖

BACKGROUND AND IMPORTANCE: A variety of deconstructive and reconstructive therapies have been used to treat intracranial aneurysms. The Pipeline embolization device (PED) has become a quite successful option to treat aneurysms, while reconstructing and remodeling the parent vessel. We report a case of off-label PED use, where a flow diverter was placed across the parent vessel of a giant intracranial aneurysm in a novel deconstructive strategy.

01 diciembre 2013

NEUROSURGERY. Endovascular Balloon-Assisted Embolization of Intracranial and Cervical Arteriovenous Malformations Using Dual-Lumen Coaxial Balloon Microcatheters and Onyx: Initial Experience

Jagadeesan, Bharathi D. MD*,‡; Grigoryan, Mikayel MD§; Hassan, Ameer E. DO§; Grande, Andrew W. MD*,‡,§; Tummala, Ramachandra P. MD*,‡,§

BACKGROUND: Ethylene vinyl alcohol copolymer (Onyx) is widely used for the embolization of arteriovenous malformations (AVMs) of the brain, head, and neck. Balloon-assisted Onyx embolization may provide additional unique advantages in the treatment of AVMs in comparison with traditional catheter-based techniques.

01 septiembre 2014

JOURNAL OF VASCULAR SURGERY. Preoperative symptom type influences the 30-day perioperative outcomes of carotid endarterectomy and carotid stenting in the Society for Vascular Surgery Vascular Registry

Patrick J. Geraghty, MD , Thomas E. Brothers, MD , David L. Gillespie, MD , Gilbert R. Upchurch, MD , Michael C. Stoner, MD , Flora S. Siami, MPH , Christopher T. Kenwood, MS , Philip P. Goodney, MD

The objective of this study was to determine the effect of presenting symptom types on 30-day periprocedural outcomes of carotid endarterectomy (CEA) and carotid artery stenting (CAS) in contemporary vascular practice.

01 septiembre 2014

JOURNAL OF VASCULAR SURGERY. The influence of contralateral occlusion on results of carotid interventions from the Society for Vascular Surgery Vascular Registry

Joseph J. Ricotta II, MD, MS , Gilbert R. Upchurch Jr., MD , Gregg S. Landis, MD , Christopher T. Kenwood, MS , Flora S. Siami, MPH, Nikolaos Tsilimparis, MD , John J. Ricotta , Rodney A. White, MD

Data on the influence of contralateral carotid occlusion (CCO) on carotid endarterectomy (CEA) are conflicting and are absent for carotid artery stenting (CAS). This study evaluated the influence of CCO on CEA and CAS.

01 noviembre 2014

JOURNAL OF VASCULAR SURGERY. Outcomes of carotid endarterectomy versus stenting in comparable medical risk patients

Emily L. Spangler, MD, MS , Philip P. Goodney, MD, MS , Andres Schanzer, MD , David H. Stone, MD , Marc L. Schermerhorn, MD , Richard J. Powell, MD , Jack L. Cronenwett, MD , Brian W. Nolan, MD, MS for the Vascular Study Group of New England

In medically high-risk patients the choice between carotid artery stenting (CAS) and carotid endarterectomy (CEA) can be difficult. The purpose of this study was to compare risk-stratified outcomes of CAS and CEA.

01 noviembre 2014

JOURNAL OF VASCULAR SURGERY. The natural history of asymptomatic severe carotid artery stenosis

Mark F. Conrad, MD, MMScemail , Michael J. Michalczyk, BS , Arissa Opalacz, BS , Virendra I. Patel, MD, MPH , Glenn M. LaMuraglia, MD , Richard P. Cambria, MD

Although level 1 evidence supports carotid endarterectomy (CEA) for stroke prevention in patients with asymptomatic severe carotid artery stenosis (ASCAS; >70%), medical therapy alone has been promulgated by some as equally effective. The goal of this study was to determine the natural history of medically treated patients with ASCAS.

22 mayo 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Intracranial Aneurysmal Pulsatility as a New Individual Criterion for Rupture Risk Evaluation: Biomechanical and Numeric Approach (IRRAs Project)

M. Sanchez, O. Ecker, D. Ambard, F. Jourdan, F. Nicoud, S. Mendez, J.-P. Lejeune, L. Thines, H. Dufour, H. Brunel, P. Machi, K. Lobotesis, A. Bonafe and V. Costalat

Background and Purpose: The present study follows an experimental work based on the characterization of the biomechanical behavior of the aneurysmal wall and a numerical study where a significant difference in term of volume variation between ruptured and unruptured aneurysm was observed in a specific case. Our study was designed to highlight by means of numeric simulations the correlation between aneurysm sac pulsatility and the risk of rupture through the mechanical properties of the wall.

15 mayo 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Thromboembolic Complications in Patients with Clopidogrel Resistance after Coil Embolization for Unruptured Intracranial Aneurysms

B. Kim, K. Kim, P. Jeon, S. Kim, H. Kim, H. Byun, J. Cha, S. Hong and K. Jo

Background and Purpose: Antiplatelet resistance is known to be associated with symptomatic ischemic complication after endovascular coil embolization. The purpose of our study was to evaluate the relationship between antiplatelet resistance and clinically silent thromboembolic complications using DWI in patients who underwent coil embolization for unruptured intracranial aneurysm.

19 junio 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Effects of Circle of Willis Anatomic Variations on Angiographic and Clinical Outcomes of Coiled Anterior Communicating Artery Aneurysms

E. Tarulli, M. Sneade, A. Clarke, A.J. Molyneux and A.J. Fox

Background and Purpose: Anterior communicating artery aneurysms account for one-fourth of all intracranial aneurysms and frequently occur in the context of A1 vessel asymmetry. The purpose of this study was to correlate circle of Willis anatomic variation association to angiographic and clinical outcomes of anterior communicating aneurysm coiling.

29 julio 2014

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Pharmacology. Halofuginone Stimulates Adaptive Remodeling and Preserves Re-Endothelialization in Balloon-Injured Rat Carotid Arteries

Lian-Wang Guo, PhD*, Bowen Wang, BS*, Shakti A. Goel, MBBS*, Christopher Little, BS, Toshio Takayama, MD, PhD, Xu Dong Shi, MD, PhD, Drew Roenneburg, MS, Daniel DiRenzo, PhD and K. Craig Kent, MD

Background: Three major processes, constrictive vessel remodeling, intimal hyperplasia (IH), and retarded re-endothelialization, contribute to restenosis after vascular reconstructions. Clinically used drugs inhibit IH but delay re-endothelialization and also cause constrictive remodeling. Here we have examined halofuginone, an herbal derivative, for its beneficial effects on vessel remodeling and differential inhibition of IH versus re-endothelialization.

01 octubre 2014

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Effectiveness of Percutaneous Screws for Treatment of Degenerative Lumbar Low Back Pain

Stefano Marcia, Luca Saba, Giovanni Carlo Anselmetti, Stefano Marini, Emanuele Piras, Mariangela Marras, Salvatore Masala, Bassem Georgy

The purpose of this retrospective observational study was to demonstrate the efficacy of a percutaneous screws system in the treatment of lumbar pain caused by high-level disc degeneration combined with facet joint hypertrophy and canal stenosis especially in the L5–S1 levels.

01 octubre 2014

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Relationship of Thrombus Length to Number of Stent Retrievals, Revascularization, and Outcomes in Acute Ischemic Stroke

Gaurav Jindal, MD , Timothy Miller, MD , Ravi Shivashankar, MD , Jason Mitchell, MD, MPH, MBA , Barney J. Stern, MD , Karen Yarbrough, MS, CRNP , Dheeraj Gandhi, MD

To study the relationship between intracranial thrombus length and number of stent retrievals, revascularization rates, and functional outcomes in stroke.

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