DIAZ TAPIA, VIOLETA DEL CARMEN
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DIAZ TAPIA, VIOLETA DEL CARMEN
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vdiaz@udd.cl

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Transcranial Doppler in a Hispanic–Mestizo population with neurological diseases: a study of sonographic window and its determinants

2012 , BRUNSER, ALEJANDRO , SILVA FUENTE ALBA, CLAUDIO SERGIO , Cárcamo, Daniel , MUÑOZ VENTURELLI, PAULA , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , Abarca, Juan , HOPPE WIEGERING, ARNOLD JOHANNES GOTTLIEB , DIAZ TAPIA, VIOLETA DEL CARMEN

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Cervical Artery Dissections with and without stroke, risk factors and prognosis: a Chilean prospective cohort

2020 , MAZZON AGURTO, ENRICO , D. Rocha , BRUNSER, ALEJANDRO , C. De la Barra , X. Stecher , T. Bernstein , P. Zúñiga , DIAZ TAPIA, VIOLETA DEL CARMEN , G. Martínez , MUÑOZ VENTURELLI, PAULA ANDREA

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Socioeconomic and Cardiovascular Variables Explaining Regional Variations in Stroke Mortality in Chile: An Ecological Study

2011 , LAVADOS GERMAIN, PABLO MANUEL , DIAZ TAPIA, VIOLETA DEL CARMEN , Liliana Jadue , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , Daniel A. Cárcamo , DELGADO BECERRA, OROZIMBA IRIS

<i>Background:</i> Regional differences in stroke mortality rates have been described in Chile. These could be related to the distribution of cardiovascular risk factors, the quality of medical care or socioeconomic status influencing incidence or case fatality rates. Our objective was to investigate variables explaining the variability in stroke mortality rates in the different regions of Chile. <i>Methods:</i> Adjusted stroke mortality rates in different regions were calculated for the year 2003. Variables were added from three sources: the National Death Certificate Database, the National Socioeconomic Characterization Survey and the National Health Survey. A logistic regression model was used to investigate regions, demographic variables and socioeconomic variables associated with the risk of death from stroke. A linear regression model was used to study the association of socioeconomic variables and cardiovascular risk factors with the standardized mortality rate by region and the contribution of these to the variability. <i>Results:</i> A twofold increase was found in adjusted stroke mortality rates among regions. Greater risk was associated with older age, female gender and residence in regions V, VII, VIII and IX. Sixty-two percent of the regional variability rate was explained by the combined prevalence of poverty (34%), diabetes (17%), sedentarism (8%) and overweight (3%). <i>Conclusion:</i> The risk of death from stroke in Chile is associated with age, sex and living in four specific regions of the country. The majority of the increased risk in these regions is explained by the prevalence of poverty, diabetes, a sedentary lifestyle and overweight.

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Additional Information Given to a Multimodal Imaging Stroke Protocol by Transcranial Doppler Ultrasound in the Emergency Room: A Prospective Observational Study

2010 , BRUNSER, ALEJANDRO , LAVADOS GERMAIN, PABLO MANUEL , Daniel A. Cárcamo , HOPPE WIEGERING, ARNOLD JOHANNES GOTTLIEB , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , DIAZ TAPIA, VIOLETA DEL CARMEN , Rodrigo Rivas

<i>Background:</i> Transcranial Doppler (TCD) ultrasound can demonstrate dynamic information. We aimed to evaluate whether TCD generates useful additional information in the emergency room after a multimodal stroke imaging protocol and also whether this modified the management of patients with cerebral infarction. <i>Methods:</i> Patients admitted between April 2006 and June 2007 with ischemic stroke of less than 24 h were subjected to a protocol consisting of noncontrast brain CT, computed tomography angiography, diffusion-weighted magnetic resonance imaging and then TCD within the following 6 h by an observer blinded to the results of imaging studies. <i>Results:</i> Seventy-nine patients were included. The imaging protocol was performed 457 (±346) min after stroke symptoms and TCD after 572 (±376) min. TCD provided additional information in 28 cases (35.4%, 95% CI 25.7–46.4). More that one piece of additional information was obtained in 6 patients. The most frequent additional information was collateral pathways. Multivariate analysis demonstrated that intracranial vessel occlusion was the variable most associated with additional information. In 7 patients (8.8%, 95% CI 4.3–17.1), additional information changed management: in 4 an additional angiography was performed, in 2 patients angiography was suspended and in 1 aggressive neurocritical care was indicated. Patients with NIHSS >10 were significantly more likely to have their initial treatment changed (p = 0.004). <i>Conclusions:</i> TCD can provide additional information to a multimodal acute ischemic stroke imaging protocol in a third of patients. This can result in changes in the management in some of these patients.

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High-Dose Intravenous Methylprednisolone for Hantavirus Cardiopulmonary Syndrome in Chile: A Double-Blind, Randomized Controlled Clinical Trial

2013 , Pablo A. Vial , Francisca Valdivieso , Marcela Ferres , Raul Riquelme , M. Luisa Rioseco , Mario Calvo , Constanza Castillo , Ricardo Díaz , Luis Scholz , Analia Cuiza , Edith Belmar , Carla Hernandez , Jessica Martinez , Sang-Joon Lee , Gregory J. Mertz , Juan Abarca , Vinko Tomicic , M. Eugenia Aracena , Ana Maria Rehbein , Soledad Velásquez , Victoria Lavin , Felipe Garrido , Paula Godoy , Constanza Martinez , Juan Carlos Chamorro , Jorge Contreras , Jury Hernandez , Marcelo Pino , Paola Villegas , Viviana Zapata , Marisol León , Ivonne Vega , Irisol Otarola , Carlos Ortega , Elizabeth Daube , Doris Huecha , Alda Neira , Ines Ruiz , M. Antonieta Nuñez , Luz Monsalve , Henriette Chabouty , Lorena Riquelme , Samia Palma , Raul Bustos , Ruben Miranda , Jovita Mardones , Nora Hernandez , Yasna Betancur , Ligia Sanhueza , Jaime Inostroza , Solange Donoso , Maritza Navarrete , Lily Acuña , Paulina Manriquez , Fabiola Castillo , Paola Unzueta , Teresa Aguilera , Carola Osorio , Veronica Yobanolo , Jorge Mardones , Sandra Aranda , Soledad Carvajal , Moisés Sandoval , Soraya Daza , Felipe Vargas , Violeta Diaz , Mauricio Riquelme , Miriam Muñoz , Andrea Carriel , Paola Lanino , Susana Hernandez , Patricia Schumacher , Lia Yañez , Claudia Marco , Mildred Ehrenfeld , Iris Delgado , Susana Rios , Cecilia Vial , Edward Bedrick

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Exclusion Criteria for Intravenous Thrombolysis in Stroke Mimics: An Observational Study

2013 , BRUNSER, ALEJANDRO , Sergio Illanes , LAVADOS GERMAIN, PABLO MANUEL , MUÑOZ VENTURELLI, PAULA , Daniel Cárcamo , HOPPE WIEGERING, ARNOLD JOHANNES GOTTLIEB , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , DELGADO BECERRA, OROZIMBA IRIS , DIAZ TAPIA, VIOLETA DEL CARMEN

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Pandemic influenza A (H1N1) 2009 with neurological manifestations, a case series

2010 , Luis Miguel Noriega , Renato J. Verdugo , ARAOS BRALIC, RAFAEL IGNACIO , MUNITA SEPULVEDA, JOSE MANUEL , DIAZ TAPIA, VIOLETA DEL CARMEN , Alejandra Marcotti , Pérez, Jorge , González, Patricia , THOMPSON MOYA, LUIS ADALBERTO , Magdalena Canals , HOPPE WIEGERING, ARNOLD JOHANNES GOTTLIEB , Anthony W. Mounts , VIAL CLARO, PABLO AGUSTIN

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Transcranial Doppler as a Predictor of Ischemic Events in Vertebral Artery Dissection

2020 , BRUNSER, ALEJANDRO , LAVADOS GERMAIN, PABLO MANUEL , Gabriel Cavada , MUÑOZ VENTURELLI, PAULA ANDREA , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , NAVIA GONZALEZ, VICTOR HUGO , Eloy Mansilla , DIAZ TAPIA, VIOLETA DEL CARMEN

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Diffusion-weighted imaging determinants for acute ischemic stroke diagnosis in the emergency room

2018 , BRUNSER, ALEJANDRO , Gabriel Cavada , MUÑOZ VENTURELLI, PAULA ANDREA , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , Alexis Rojo , ALMEIDA TORO, JUAN MANUEL , DIAZ TAPIA, VIOLETA DEL CARMEN , HOPPE WIEGERING, ARNOLD JOHANNES GOTTLIEB , LAVADOS GERMAIN, PABLO MANUEL

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INCIDENCE OF PATHOLOGICAL SUBTYPES OF STROKE IN CHILE. THE NUBLE REGION, CEREBROVASCULAR ATTACK INCIDENCE, AND DEATH COMMUNITY SURVEILLANCE AND INTERVENTION STUDY (NANDU): MAIN RESULTS

2020 , LAVADOS GERMAIN, PABLO MANUEL , OLAVARRIA IANISZEWSKY, VERONICA VIVIANA , BRUNSER RABOVICH, ALEJANDRO MICHEL , MUÑOZ VENTURELLI, PAULA ANDREA , HOPPE PALACIOS, SEBASTIÁN ANDRÉS , DIAZ TAPIA, VIOLETA DEL CARMEN , Hoffmeister, L. , Moraga, A. , Vejar, A. , Vidal, C. , Lopez, E. , Rojo, A. , Almeida, J. , Sacks, C.

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