21 documents found, page 1 of 3

Emergence of the Asian lineage of Zika virus in Angola: an outbreak investigation

Background: Zika virus infections and suspected microcephaly cases have been reported in Angola since late 2016, but no data are available about the origins, epidemiology, and diversity of the virus. We aimed to investigate the emergence and circulation of Zika virus in Angola. Methods: Diagnostic samples collected by the Angolan Ministry of Health as part of routine arboviral surveillance were tested by real-t...

Acute Ischemic Stroke in a Child Successfully Treated with Thrombolytic Therapy...

Acute ischemic stroke in the pediatric population is rare but carries lasting and often lifelong morbidity. Thrombolysis and mechanical thrombectomy are mainstays of care in adults, yet there is very little evidence for these treatments in children. We present the case of a 4-year-old boy with complex congenital heart disease, admitted 30 min after sudden onset of an aphasia and right hemiplegia, scoring 14 on ...

Determination of mode II cohesive law of bovine cortical bone using direct and ...

This study presents two alternative methods to determine the cohesive law of bovine cortical bone under mode II loading, employing the End Notched Flexure (ENF) test. The direct method results from the combination of the progress of the mode II strain energy release rate with the crack tip shear displacement, obtained by digital image correlation. The resulting cohesive law is determined by differentiation of th...

Fracture characterization of human cortical bone under mode II loading using th...

Fracture characterization of human cortical bone under mode II loading was analyzed using a miniaturized version of the end-notched flexure test. A data reduction scheme based on crack equivalent concept was employed to overcome uncertainties on crack length monitoring during the test. The crack tip shear displacement was experimentally measured using digital image correlation technique to determine the cohesiv...

Direct and inverse methods applied to the determination of mode I cohesive law ...

This work addresses the determination of the cohesive law under mode I loading of bovine cortical bone tissue using the Double Cantilever Beam (DCB) test. Direct and inverse methods were proposed to assess the cohesive laws representative of bone fracture under mode I loading. The direct method combines the evolution of the strain energy release rate under mode I loading with the crack tip opening displacement ...

Mechanical thrombectomy in patients with acute basilar occlusion using stent re...

Early arterial recanalisation with stent retrievers (SR) has been recently demonstrated to improve clinical outcome of patients with large-vessel occlusion of the anterior circulation. However, the benefit of SR thrombectomy in the setting of acute basilar artery occlusion (BAO) has not been proven yet. This study evaluated a series of consecutive patients with BAO treated with SR, focusing on the efficacy, saf...

The role of Malcolm Clarke (1930–2013) in the Azores as a scientist and educati...

Malcolm Roy Clarke (1930–2013) was a British teuthologist who made an important contribution to marine science in the Azores archipelago (Portugal). Malcolm started doing research in the Azores from 1980s onward, settling for residency in 2000 after retirement (in 1987). He kept publishing on Azorean cephalopods collaborating in 20% of the peer reviewed works focus- ing on two main areas: dietary studies; and t...

Reliability of CT perfusion in the evaluation of the ischaemic penumbra

CT perfusion (CTP) is part of the initial evaluation of stroke patients, allowing differentiation between infarcted tissue and the ischaemic penumbra and helping in the selection of patients for endovascular treatment. This study assessed the reliability of the qualitative evaluation CTP maps in defining the ischemic penumbra and identified potential pitfalls associated with this technique. We reviewed CTP scan...

Response to letter to the editor. "CT angiography source-images and CT perfusio...

Acufeno púlsátil - Caso clínico de fístula arteriovenosa dural e revisão da lit...

O acufeno é definido como uma percepção consciente de um som na ausência de fonte externa. Embora não seja considerado uma doença, muitos doentes sofrem deste sintoma. Tem múltiplas etiologias sendo que, apenas algumas são conhecidas. As malformações vasculares constituem a principal causa de acufenos pulsáteis. Descrevem-se dois casos clínicos de doentes com acufeno pulsátil. Ambos realizaram angio-ressonância...