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ABSTRACT


01 noviembre 2014

JOURNAL OF NEUROSURGERY. Single-center experience with a dual microcatheter technique for the endovascular treatment of wide-necked aneurysms

Christopher R. Durst, M.D.1,*, Robert M. Starke, M.D., M.Sc.2, John R. Gaughen Jr., M.D.1, Scott Geraghty, M.D.3, K. Derek Kreitel, M.D.4, Ricky Medel, M.D.5, Nicholas Demartini, M.D.6, Kenneth C. Liu, M.D.1,2, Mary E. Jensen, M.D.1,2, and Avery J. Evans, M.D.1,2

OBJECT: The endovascular treatment of wide-necked aneurysms can be technically challenging due to distal coil migration or impingement of the parent vessel. In this paper, the authors illustrate an alternative method for the treatment of wide-necked intracranial aneurysms using a dual microcatheter technique.

01 noviembre 2014

JOURNAL OF NEUROSURGERY. Long-term catheter angiography after aneurysm coil therapy: results of 209 patients and predictors of delayed recurrence and retreatment

Nohra Chalouhi, M.D.1, Cory D. Bovenzi, B.S.1, Vismay Thakkar, M.D.1, Jeremy Dressler, B.S.1, Pascal Jabbour, M.D.1, Robert M. Starke, M.D.2, Sonia Teufack, M.D.1, L. Fernando Gonzalez, M.D.1, Richard Dalyai, M.D.1, Aaron S. Dumont, M.D.3, Robert Rosenwasser, M.D.1, and Stavropoula Tjoumakaris, M.D.1

OBJECT: Aneurysm recurrence after coil therapy remains a major shortcoming in the endovascular management of cerebral aneurysms. The need for long-term imaging follow-up was recently investigated. This study assessed the diagnostic yield of long-term digital subtraction angiography (DSA) follow-up and determined predictors of delayed aneurysm recurrence and retreatment.

01 noviembre 2014

NEUROSURGERY. Global Oxygen Extraction Fraction by Blood Sampling to Anticipate Cerebral Hyperperfusion Phenomenon After Carotid Artery Stenting

Iwata, Tomonori MD; Mori, Takahisa MD, PhD; Miyazaki, Yuichi MD; Tanno, Yuhei MD; Kasakura, Shigen MD; Aoyagi, Yoshinori MD

BACKGROUND: Cerebral hyperperfusion syndrome sometimes occurs after carotid revascularization in patients with severe hemodynamic failure. To prevent cerebral hyperperfusion syndrome, cerebral hyperperfusion phenomenon (CHP) must be detected early. Single-photon emission computed tomography (SPECT) is useful for detecting CHP, but it is impractical on a daily basis. A tool with high availability to find CHP is desired.

01 diciembre 2014

NEUROSURGERY. Improved Localization of Implanted Subdural Electrode Contacts on Magnetic Resonance Imaging With an Elastic Image Fusion Algorithm in an Invasive Electroencephalography Recording

Stieglitz, Lennart Henning MD*; Ayer, Christian MD‡; Schindler, Kaspar MD§; Oertel, Markus Florian MD¶; Wiest, Roland MD‖; Pollo, Claudio MD¶

BACKGROUND: Accurate projection of implanted subdural electrode contacts in presurgical evaluation of pharmacoresistant epilepsy cases by invasive electroencephalography is highly relevant. Linear fusion of computed tomography and magnetic resonance images may display the contacts in the wrong position as a result of brain shift effects.

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.

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