DIAZ TAPIA, VIOLETA DEL CARMEN
Preferred name
DIAZ TAPIA, VIOLETA DEL CARMEN
Main Affiliation
Email
vdiaz@udd.cl
Scopus Author ID
35610811800
22 results
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Item type:Publication, Additional Information Given to a Multimodal Imaging Stroke Protocol by Transcranial Doppler Ultrasound in the Emergency Room: A Prospective Observational Study(2010); ; ; <jats:p><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.</jats:p>2Scopus© Citations 17 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Real-world experience of ocrelizumab in multiple sclerosis patients in Latin America(2021)Scopus© Citations 12 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Scopus© Citations 8 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Cervical Artery Dissections with and without stroke, risk factors and prognosis: a Chilean prospective cohort(2020); ; Scopus© Citations 7 3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 5Scopus© Citations 52 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Pandemic influenza A (H1N1) 2009 with neurological manifestations, a case series(2010); ; 34Scopus© Citations 22 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Accuracy of Diffusion-Weighted Imaging in the Diagnosis of Stroke in Patients With Suspected Cerebral Infarct(2013); ; ; <jats:sec> <jats:title>Background and Purpose—</jats:title> <jats:p>The accuracy of diffusion-weighted imaging (DWI) for the diagnosis of acute cerebral ischemia among patients with suspected ischemic stroke arriving to an emergency room has not been studied in depth.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods—</jats:title> <jats:p>DWI was performed in 712 patients with acute or subacute focal symptoms that suggested an acute ischemic stroke (AIS), 609 of them with AIS.</jats:p> </jats:sec> <jats:sec> <jats:title>Results—</jats:title> <jats:p>DWI demonstrated a sensitivity of 90% and specificity of 97%, a positive likelihood ratio of 31 and a negative likelihood ratio of 0.1 for detecting AIS. The overall accuracy was 95%. Of those patients who demonstrated abnormal DWI studies, 99.5% were AIS patients, and of those patients with normal DWI studies 63% were stroke mimics.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions—</jats:title> <jats:p>DWI is accurate in detecting AIS in unselected patients with suspected AIS; a negative study should alert for nonischemic conditions.</jats:p> </jats:sec>1Scopus© Citations 44 1 - Some of the metrics are blocked by yourconsent settings
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Item type:Publication, 10 1Scopus© Citations 2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Incidence of multiple sclerosis in Chile. A hospital registry study(2011); Scopus© Citations 18 2
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