Rene Viso

Hospital Privado de Comunidad

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Iván Lylyk

University of Pennsylvania

Pedro Lylyk

University of Pennsylvania

Jorge Chudyk

Instituto Cardiovascular de Rosario

Esteban Scrivano

Instituto Cardiovascular de Rosario

Carlos Bleise

Instituto Cardiovascular de Rosario

Nicolás Pérez

Instituto Cardiovascular de Rosario

Javier Lundquist

Instituto Cardiovascular de Rosario

Alvaro Valtorta

Hospital Privado de Comunidad

Pedro Lylyk

Instituto Cardiovascular de Rosario

Pablo Albiña-Palmarola

Klinikum Stuttgart

Cooperative Institutions

Instituto Cardiovascular de Rosario

Instituto de Neurología Cognitiva

Electronics for Imaging (United States)

Medico

Klinikum Stuttgart

George Mason University

Associação Saúde da Família

Hospital Privado de Comunidad

Inova Fairfax Hospital

Philips (Finland)

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Pipeline Embolization Devices for the Treatment of Intracranial Aneurysms, Single-Center Registry: Long-Term Angiographic and Clinical Outcomes from 1000 Aneurysms

Neurosurgery (2021)

Iván Lylyk Esteban Scrivano Javier Lundquist Ángel Ferrario Carlos Bleise

Abstract BACKGROUND Prospective studies have established the safety and efficacy of the Pipeline TM Embolization Device (PED; Medtronic) for treatment of intracranial aneurysms (IA). OBJECTIVE To investigate long-term outcomes from the Pipeline Embolization Devices for the Treatment of Intracranial Aneurysms (PEDESTRIAN) Registry. METHODS The PEDESTRIAN Registry data were retrospectively reviewed, which included patients (March 2006 to July 2019) with complex IAs treated with PED. Patients with unfavorable anatomy and/or recurrence following previous treatment were included and excluded those with acute subarachnoid hemorrhage. The primary angiographic endpoint was complete occlusion and long-term stability. Clinical and radiological follow-up was performed at 3 to 6 mo, 12 mo, and yearly thereafter. RESULTS A total of 835 patients (mean age 55.9 ± 14.7 yr; 80.0% female) with 1000 aneurysms were included. Aneurysms varied in size: 64.6% were small (≤10 mm), 25.6% were large (11-24 mm), and 9.8% were giant (≥25 mm). A total of 1214 PEDs were deployed. Follow-up angiography was available for 85.1% of patients with 776 aneurysms at 24.6 ± 25.0 mo (mean). Complete occlusion was demonstrated in 75.8% of aneurysms at 12 mo, 92.9% at 2 to 4 yr, and 96.4% at >5 yr. During the postprocedural period, modified Rankin Scale scores remained stable or improved in 96.2% of patients, with stability or improvement in 99.1% of patients >5 yr. The overall major morbidity and neurological mortality rate was 5.8%. CONCLUSION This study demonstrated high rates of long-term complete aneurysm occlusion, stable or improved functional outcomes, and low rates of complications and mortality. Clinical and angiographic outcomes improved over long-term follow-up, demonstrating that endovascular treatment of IA with PED is safe and effective.

Single Center

Clinical endpoint

10.1093/neuros/nyab183

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Citations (40)

Hemorrhagic events associated with unfused or twig-like configuration of the Middle cerebral artery: A rare vascular anomaly with clinical relevance

Interventional Neuroradiology (2020)

Rene Viso Iván Lylyk Pablo Albiña-Palmarola Javier Lundquist Esteban Scrivano

Twig-like middle cerebral artery configuration (Tw-MCA) is a rare and commonly misdiagnosed vascular anomaly characterized by a plexiform arterial network that replaces the normal M1 segment. The prevalence and clinical relevance of this anomaly is not fully established.We sought to explore the prevalence of Tw-MCA in patients clinically referred to digital angiography in a single academic comprehensive endovascular center and evaluated the radiological and clinical findings among patients with hemorrhagic events.From 2011 to 2020, a total of 10,234 patients underwent a cerebral angiography at our institution. During this period, 9 (0.088%) Tw-MCAs were identified. Out of these, 5 patients (62.5%) were admitted due to an intracranial hemorrhage. Two patients had a ruptured intracranial aneurysm on the anterior communicating artery, one with multiple brain aneurysms; two patients presented an intraparenchymal hematoma (IPH) due to the presence of a periventricular anastomosis and one patient an intraventricular hemorrhage with unclear origin.Tw-MCA is a very rare vascular anomaly associated with hemorrhagic events. Adequate identification of this anomaly is essential in order to avoid misdiagnosis as steno-occlusive disorders.

Vascular anomaly

Clinical Significance

Anterior cerebral artery

Arteriovenous malformation

10.1177/1591019920970430

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Treatment of a Symptomatic Severe Basilar Artery Stenosis with Balloon Dilatation (NeuroSpeed) Followed by the Implantation of a Self-Expanding Stent (Credo) with Good Clinical Outcome and Follow-Up

Springer eBooks (2024)

Felix Falcon Óscar González Arturo Alonso Jorge Chudyk Rene Viso

Balloon dilatation

10.1007/978-3-030-85411-9_82-1

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“No-Reflow” Phenomenon After Successful Recanalization of a Medium Vessel Occlusion in Late Time Window Stroke

Springer eBooks (2024)

Alvaro Valtorta Maria Emilia Clément Jorge Chudyk Rene Viso

Therapeutic window

10.1007/978-3-030-85411-9_101-1

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ADDUCTOR TENOTOMY IN CEREBRAL PALSY. UNILATERAL OR BILATERAL

Orthopaedic Proceedings (2003)

F. Fernandez‐Palazzi S Rivas Rene Viso

Europeam Group of Neuro-orthopaedic (GLAENeO), Caracas, The prevention of a dislocated hip is one of the aims of early surgery in Cerebral Palsy children, specially those severely involved. We performed a retrospective study of those cerebral palsy patients operated of adductor tenotomy between 1975 and 1995 with a total of 1474 patients. We grouped them in those who had a unilateral tenotomy and those who had a bilateral tenotomy as primary surgery. Of these only 8% had an obturator neurectomy, without walking ability, and 92 % had it not. Age at surgery varied from 6 months to 8 years of age with a mean of 4 years and 3 months. Group I: 792 patients (53.7 %) with unilateral adductor contracture, sustained a unilateral adductor tenotomy. Of these patients a total of 619 (78, 2 %) required a contralateral adductor tenotomy at a mean of 3 years and 6 months. Group II: 682 patients (46, 3 %) with bilateral adductor contracture that had a bilateral adductor tenotomy in one stage. Of the 792 patients that sustained a two stage adductor tenotomy, 123 (20%) presented a unilateral dislocated hip and of these 115 (93 %) occurred in the hip operated secondly at a mean of 1 year post tenotomy. Of the 682 patients with bilateral adductor tenotomies only 7 (1 %) had a dislocated hip 2 years post tenotomy. Of the 72 dislocated hips, 12 (59 %) were quadriplegics, 28 (22 %) were diplegic, 21 (18 %) hemiplegics and 1 (1 %) tetraplegic. Of the 619 patients tenotomized in two stages, in 143 the diaphyseal – cervical angle was 155 ° (23,1 %), at a mean of 6 and a half years of age and 3 years post the second tenotomy. In 102 of these patients (71 %) a varus derotation osteotomy was performed in the hip operated in the second act with further dislocation of the hip in 20 cases (20 %). Of the 685 patients with bilateral tenotomy in one stage, varus derotation osteotomy was required in 68 (68 %) at a mean of 6 years of age with only a 3 % of dislocations in this group. In view of these results we recommend a bilateral adductor tenotomy be performd regardless of a difference in the degree of contracture of both sides, thus coordinating the forces and avoid further dislocation the hip.

Tenotomy

Adductor muscles

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Paraophthalmic Internal Carotid Artery Aneurysm: Spontaneous Subarachnoid Hemorrhage Caused by the Rupture of a Paraophthalmic Aneurysm, Treated with Coils and Complicated by Severe Vasospasm, Treated with Pharmaceutical Vessel Dilatation and Proximal Balloon Angioplasty; Diffuse Distal Vasospasm Treated with the NeuroFlo Device with Good Clinical Outcome

Springer eBooks (2019)

Iván Lylyk Carlos Bleise Rene Viso Esteban Scrivano Pedro Lylyk

Cerebral Vasospasm

10.1007/978-3-319-70267-4_119-1

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