Publications by authors named "Guilherme M Hetzel"

Background: Pulmonary function testing (PFT) is paramount in assessing patients with respiratory symptoms and chronic cardiopulmonary diseases. Although seminal studies have demonstrated that PFT generates aerosols, this simple observation does not confirm the potential for enhanced pathogen transmission.

Objective: We aimed to describe the frequency of patients who developed suspected symptoms of COVID-19, prompting SARS-CoV-2 testing after undergoing PFT during the reopening of a laboratory amid the deceleration of the pandemic.

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Objective: To investigate the impact of impaired pulmonary function on patient-centered outcomes after hospital discharge due to severe COVID-19 in patients without preexisting respiratory disease.

Methods: This is an ongoing prospective cohort study evaluating patients (> 18 years of age) 2-6 months after hospital discharge due to severe COVID-19. Respiratory symptoms, health-related quality of life, lung function, and the six-minute walk test were assessed.

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Objective: To determine independent factors related to the use of oxygen and the oxygen flow rate in idiopathic pulmonary fibrosis (IPF) patients placed on a lung transplant waitlist and undergoing pulmonary rehabilitation (PR).

Methods: This was a retrospective quasi-experimental study presenting functional capacity and health-related quality of life (HRQoL) data from lung transplant candidates with IPF referred for PR and receiving ambulatory oxygen therapy. The patients were divided into three groups on the basis of the oxygen flow rate: 0 L/min (the control group), 1-3 L/min, and 4-5 L/min.

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Objective: To investigate the impact of pulmonary rehabilitation (PR) on functional outcomes and health-related quality of life (HRQoL) in idiopathic pulmonary fibrosis (IPF) patients placed on a lung transplant waitlist and receiving antifibrotic therapy (AFT).

Methods: This was a retrospective observational study of consecutive IPF patients receiving AFT with either pirfenidone or nintedanib (the AFT group) and undergoing PR between January of 2018 and March of 2020. The AFT group and the control group (i.

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Article Synopsis
  • - The COVID-19 pandemic led to significant delays in the diagnosis and treatment of thyroid cancer in Brazil, with specific data showing a decrease in various procedures like fine-needle aspiration biopsies, oncologic thyroidectomies, and radioiodine therapies.
  • - A retrospective analysis of thyroid cancer procedures from 2019 to 2021 revealed a stark decline, especially in early 2020, with FNABs down by 67% and RAI therapies by 75% during the height of restrictions.
  • - The overall impact of these reductions on patient outcomes and long-term care for thyroid cancer remains uncertain, as the healthcare system is still assessing the consequences of the pandemic.
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Background: Type 2 Deiodinase (DIO2) converts thyroxine (T4) into the active hormone triiodothyronine (T3). Thr92Ala DIO2 polymorphism has been associated with reduced conversion of T4 into T3 and central nervous system hypothyroidism. However, how Thr92Ala DIO2 polymorphism affects cognitive function is still unclear.

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