Publications by authors named "J D Guimaraes"

Understanding geochemical source-sink relationships is an important aspect for developing background values of potentially toxic elements (PTEs) in a lake basin. This approach was studied in the Araguaia belt of Amazonia, Brazil. A total of 96 sediments (from 13 lake cores LA1-LA13), 36 surface soils, and 19 catchment rocks were collected in 2022 and chemical analysis of these samples was performed in the fine fraction (< 177 μm) using XRF and ICP-MS.

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The reported incidence of meniscal tears in the pediatric age group has increased because of increased sports participation and more widespread use of MRI. Meniscal injury is one of the most commonly reported internal derangements in skeletally immature knees and can be associated with early degenerative joint disease leading to disability. The pediatric meniscus has particularities, and knowledge of normal anatomy, anatomical variations, and the patterns of meniscal injury in the pediatric age group is essential to provide a correct diagnosis.

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Background: There is a lack of information from Brazil regarding therapies used and outcomes in patients with acute coronary syndrome with ST elevation (STEMI).

Objectives: To evaluate evidence-based therapies, occurrence of outcomes, reperfusion use, and predictors of not receiving reperfusion in patients with STEMI in a national multicenter registry.

Methods: Patients with STEMI from the ACCEPT registry, with up to 12 hours of symptoms, were followed for 1 year for the occurrence of major adverse cardiovascular events.

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Shoulder and neck concerns are prevalent musculoskeletal issues prompting medical attention, often stemming from scapulothoracic disorders that can serve as both the cause and consequence of other shoulder abnormalities. Scapular dyskinesis, fractures, benign and malignant masses, and neuropathies are frequently overlooked yet can substantially affect shoulder pain and function, particularly in athletes. Scapulothoracic disorders may lead to and/or be worsened by common shoulder abnormalities including those of the rotator cuff, neighboring bursae, and the glenohumeral articulation and labrum.

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