Publications by authors named "Adrian Gallardo"

Acute respiratory distress syndrome (ARDS) presents a challenge for clinicians due to its high morbidity and mortality. Prone position (PP) has been used as a therapeutic strategy in ARDS patients, demonstrating benefits in respiratory mechanics and gas exchange. In SARSCoV-2-related ARDS (C-ARDS), 80% of patients require PP to alleviate refractory hypoxemia.

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Lung ultrasound (LUS) has emerged as a valuable bedside decision-making tool, particularly since the COVID-19 pandemic, with applications in diagnosing pneumonia, managing fluid, and monitoring interstitial lung diseases (ILDs) and acute respiratory distress syndrome (ARDS), ultimately improving patient outcomes. Its repeatability, environmental safety, and reduced radiation exposure make it ideal for vulnerable populations and resource-limited settings. However, challenges such as inadequate documentation and a lack of standardized reporting formats limit its widespread adoption.

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Background: Weaning failure has been associated with increased hospital stay and higher mortality. Identification of the risk factors that may affect weaning outcome is paramount. Ultrasonography is an excellent tool for pulmonary and diaphragmatic monitoring during mechanical ventilation, allowing real-time evaluation of anatomical structures and function.

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The diaphragm is the primary muscle involved in the ventilatory pump, making it a vital component in mechanical ventilation. Various factors in patients who require mechanical ventilation can lead to the deterioration of the diaphragm, which is associated with increased mortality. This deterioration can arise from either excessive or insufficient support due to improper adjustment of ventilation programming variables.

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Purpose: This study aimed to assess the impact of a bundle of care strategy on the duration of awake prone positioning (AW-PP) and other key clinical outcomes in patients with acute respiratory failure (ARF) who require high-flow nasal oxygen (HFNO).

Methods: In this secondary analysis of a prospective, multicenter cohort study, we included patients admitted with COVID-19-related ARF who required HFNO. The protocol encouraged AW-PP for as long as possible.

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Technological advances and interprofessional teamwork have significantly improved survival rates of critically ill patients. However, this progress has also introduced new challenges, such as intensive care unit-acquired weakness, which can contribute to postintensive care syndrome. Both conditions are associated with increased morbidity and mortality, prolonged length of hospital stay, higher social and health care costs, and reduced quality of life for patients and their families.

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Article Synopsis
  • A study was conducted to evaluate the effectiveness of the awake-prone position for patients with COVID-19-related acute respiratory failure requiring high-flow nasal oxygen in Argentina.
  • The study included 728 patients across two waves of the pandemic, comparing outcomes like endotracheal intubation and in-hospital mortality between those in the awake-prone position and those in a non-prone position.
  • Results showed that the awake-prone position significantly reduced the risk of both endotracheal intubation and in-hospital mortality, with consistent benefits observed across different waves of the pandemic.
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This review addresses the phenomenon of "reverse triggering", an asynchrony that occurs in deeply sedated patients or patients in transition from deep to light sedation. Reverse triggering has been reported to occur in 30-90% of all ventilated patients. The underlying pathophysiological mechanisms remain unclear, but "entrainment" is proposed as one of them.

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Objectives: The Berlin definition of acute respiratory distress syndrome (ARDS) was constructed for patients receiving invasive mechanical ventilation (IMV) with consideration given to issues related to reliability, feasibility, and validity. Notwithstanding, patients with acute respiratory failure (ARF) may be treated with high-flow nasal oxygen (HFNO) and may not fall within the scope of the original definition. We aimed to evaluate the predictive validity of the Berlin definition in HFNO-treated patients with COVID-19-related respiratory failure who otherwise met ARDS criteria.

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Bilateral lung transplantation is the treatment of end-stage lung diseases. However, sometimes a single lung transplant is performed. The technique is not exempt from complications such as acute hyperinflation of the native lung and changes in the diaphragm, predisposing to atelectasis and respiratory failure that can lead to negative results.

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Invasive mechanical ventilation is a frequent therapy in critically ill patients in critical care units. To achieve favorable outcomes, patient and ventilator interaction must be adequate. However, many clinical situations could attempt against this principle and generate a mismatch between these two actors.

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Introduction: The use of high-flow nasal oxygen (HFNO) is a simple method that can reduce intubation in patients with hypoxemic acute respiratory failure (ARF). Early and prolonged prone position has demonstrated benefits on mortality in mechanically ventilated patients and on intubation in awake patients with ARF. However, strategies to achieve adherence to awake prone positioning (APP) have not been previously described.

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Background: The evidence regarding benefits of high-flow nasal cannula (HFNC) in patients with COVID-19 is controversial. The aim of this study was to evaluate the impact of HFNC in comparison with standard oxygen therapy on the frequency of endotracheal intubation at 28 d in subjects with acute hypoxemic respiratory failure (AHRF) secondary to SARS-CoV-2 infection.

Methods: A retrospective, age- and sex-matched-paired, cohort study was conducted in subjects with moderate-to-severe AHRF.

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Background: In patients with COVID-19-related acute respiratory failure (ARF), awake prone positioning (AW-PP) reduces the need for intubation in patients treated with high-flow nasal oxygen (HFNO). However, the effects of different exposure times on clinical outcomes remain unclear. We evaluated the effect of AW-PP on the risk of endotracheal intubation and in-hospital mortality in patients with COVID-19-related ARF treated with HFNO and analyzed the effects of different exposure times to AW-PP.

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The prone position for the treatment of hypoxemic acute respiratory failure in patients with severe COVID-19 pneumonia, who are critically ill and mechanically ventilated, is well documented. These cases provide information on the most frequent injury locations, severity, and prevalence in affected peripheral nerves, mostly involving the upper limb, as these injuries are not widely discussed in the literature. Furthermore, it is intended to be a starting point to provide intensive care units with a review of their prone application protocols.

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Several measures are being implemented to control groundwater contamination at the Fukushima Daiichi Nuclear Plant. This paper presents an overview of work undertaken to contain the spread of radionuclides, and to mitigate releases to the ocean via hydrological pathways. As a first response, contaminated water is being held in tanks while awaiting treatment.

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The Great East Japan Earthquake and tsunami of March 2011 severely damaged three reactors at the Fukushima Daiichi nuclear power station, leading to a major release of radiation into the environment. Groundwater flow through these crippled reactors continues to be one of the main causes of contamination and associated transport of radionuclides into the Pacific Ocean. In this context, a number of strategies are being implemented to manage radioactive pollution of the water resources at the nuclear plant site.

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