Guilherme Barros

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The tools for managing retinoblastoma have been increasing in the past decade. While globe-salvage still relies heavily on intravenous chemotherapy, tumors in advanced stage that failed chemotherapy are now referred for intra-arterial chemotherapy (IAC) to avoid enucleation. However, IAC still has many obstacles to overcome. We present an update on the(More)
OBJECTIVE Cerebral vasospasm (cVSP) is a frequent complication of aneurysmal subarachnoid hemorrhage (aSAH), with a significant impact on outcome. Beta blockers (BBs) may blunt the sympathetic effect and catecholamine surge associated with ruptured cerebral aneurysms and prevent cardiac dysfunction. The purpose of this study was to investigate the(More)
BACKGROUND The use of flow-diversion to treat ophthalmic segment aneurysms (OSA) has not been well evaluated. OBJECTIVE To assess the visual outcomes, the obliteration rate, and the need for retreatment of OSA treated by the pipeline embolization device (PED). METHODS Patients who underwent treatment with PED for OSA from 2009 to 2014 were selected and(More)
OBJECTIVE Data regarding the role of alternative access routes in neuro-endovascular interventions is limited. Our aim is to evaluate the safety and efficacy of alternative access in endovascular management of cerebrovascular diseases. METHODS 29 patients who underwent endovascular interventions using alternative access techniques including transradial,(More)
BACKGROUND The main concern with the use of the pipeline embolization device (PED) in treating cerebral aneurysms is the risk of hemorrhagic and thromboembolic complications. OBJECTIVE To investigate if P2Y12 reaction unit (PRU) values are associated with hemorrhagic and thromboembolic complications after treatment with the PED and to find an optimal(More)
BACKGROUND The Pipeline Embolization Device is a widely utilized flow diverter in the treatment of intracranial aneurysms. OBJECTIVE To assess the incidence, clinical significance, predictors, and outcomes of in-Pipeline stenosis (IPS). METHODS Angiographic studies in 139 patients treated between 2011 and 2013 were independently reviewed by 2 authors(More)
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