Publications by authors named "Mariana Simao"

Article Synopsis
  • The study examined whether awake-prone positioning (APP) during COVID-19 could lower intubation rates, death rates, and hospital length of stay (HLOS).
  • It involved a retrospective review of 115 non-mechanically ventilated patients in Brazil and found no significant difference in outcomes between APP and awake-not-prone positioning (ANPP) groups.
  • A systematic review of 86 articles supported these findings, showing that APP did not significantly improve clinical outcomes across different income-level countries.
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Purpose: Conjunctival melanoma is a rare ocular tumor. We report a case of ocular conjunctival melanoma during topical immunosuppression, after a corneal transplant from a donor with metastatic melanoma.

Observation: A 59-year-old white male presented with a progressive nonpigmented conjunctival lesion in his right eye.

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Between April and July 2020, and, therefore, prior to the broad recommendation of corticosteroids for severe COVID-19, a total of 50 full autopsies were performed in Manaus. We confirmed two invasive cases of aspergillosis through histopathology and gene sequencing (4%) in our autopsy series. The confirmed invasive aspergillosis incidence seems much lower than expected based on the "probable and possible" definitions, and an individualized approach should be considered for each country scenario.

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Purpose: Our aim was to report the case of endothelial corneal allograft rejection after inactivated severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine with an atypical presentation.

Methods: This was a case report.

Results: A 63-year-old woman with previous penetrating keratoplasty and laser in situ keratomileusis presented with clinical signs of endothelial corneal graft rejection 24 hours after CoronaVac (SinoVac Biotech, Beijing/China) vaccine.

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Background: Radiofrequency ablation is the standard non-pharmacological treatment for arrhythmias in pediatric patients. However, arrhythmias and their associated causes have particular features in this population.

Objective: To analyze the epidemiological characteristics and findings of electrophysiological diagnostic studies and radiofrequency ablations in pediatric patients referred to the Electrophysiology Unit at Instituto de Cardiologia do Rio Grande do Sul, in order to characterize the particularities of this population.

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Background: The International Commission of Radiology recommends a pregnancy screening test to all female patients of childbearing age who will undergo a radiological study. Radiation is known to be teratogenic and its effect is cumulative. The teratogenic potential starts at doses close to those used during these procedures.

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Context: Many patients in use of mechanical ventilation show clinical complications due to tracheal aspiration. Assessment and early methods are necessary, so that preventive and safety measures apply to this patients.

Objective: To study the incidence of tracheal aspiration of saliva in tracheotomized patients treated in intensive care unit using two modes of mechanical ventilation and with different sedation levels.

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