845 results match your criteria: "Lisbon (Xavier); Boston Children's Hospital and Harvard Medical School[Affiliation]"

Optimizing Mechanical Ventilation: A Clinical and Practical Bedside Method for the Identification and Management of Patient-Ventilator Asynchronies in Critical Care.

J Clin Med

January 2025

Department of Critical Care Medicine, Hospital de São Francisco Xavier, Unidade Local de Saúde Lisboa Ocidental (ULSLO), Estrada Forte do Alto Duque, 1449-005 Lisbon, Portugal.

The prompt identification and correction of patient-ventilator asynchronies (PVA) remain a cornerstone for ensuring the quality of respiratory failure treatment and the prevention of further injury to critically ill patients. These disruptions, whether due to over- or under-assistance, have a profound clinical impact not only on the respiratory mechanics and the mortality associated with mechanical ventilation but also on the patient's cardiac output and hemodynamic profile. Strong evidence has demonstrated that these frequently occurring and often underdiagnosed events have significant prognostic value for mechanical ventilation outcomes and are strongly associated with prolonged ICU stays and hospital mortality.

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Little is known about the clinical characteristics and pathogens causing hospital-acquired bloodstream infections (HA-BSIs) in relation to an intensive care unit (ICU) stay. Population-based cohort study, comprising 35% of the Danish population, 2009-2016. We derived four patient groups with first-time HA-BSIs: no ICU stay during the admission (non-ICU patients) and HA-BSI acquired before, in, or after an ICU stay (before-ICU, in-ICU, and after-ICU patients).

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Metastable Oscillatory Modes as a Signature of Entropy Management in the Brain.

Entropy (Basel)

December 2024

Center for Eudaimonia and Human Flourishing, Linacre College, University of Oxford, Oxford OX3 9BX, UK.

Entropy management, central to the Free Energy Principle, requires a process that temporarily shifts brain activity toward states of lower or higher entropy. Metastable synchronization is a process by which a system achieves entropy fluctuations by intermittently transitioning between states of collective order and disorder. Previous work has shown that collective oscillations, similar to those recorded from the brain, emerge spontaneously from weakly stable synchronization in critically coupled oscillator systems.

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The expanding scale and complexity of microscopy image datasets require accelerated analytical workflows. NanoPyx meets this need through an adaptive framework enhanced for high-speed analysis. At the core of NanoPyx, the Liquid Engine dynamically generates optimized central processing unit and graphics processing unit code variations, learning and predicting the fastest based on input data and hardware.

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Massive hemoptysis is a life-threatening condition. Bronchial artery embolization (BAE) is an effective technique for controlling bleeding in cases of severe hemoptysis, with infrequent complications. While rare, spinal cord infarction is a serious potential complication of BAE.

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Background: Venous thromboembolism (VTE) is one of the leading causes of death in patients with cancer. Currently, there is a need to develop an easily applicable risk model that can identify patients who will benefit from receiving primary thromboprophylaxis to reduce the incidence of VTE.

Patients And Methods: This was a non-interventional, multicenter, observational, prospective study carried out in 62 Oncology and Hematology services in Spain and Portugal between January 2018 and December 2019.

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Background: Obesity is associated with excessive adipocyte-derived aldosterone secretion, independent of the classical renin-angiotensin-aldosterone cascade, and mineralocorticoid receptor antagonists may be more effective in patients with heart failure (HF) and obesity.

Objectives: This study sought to examine the effects of the nonsteroidal mineralocorticoid receptor antagonist finerenone compared with placebo, according to body mass index (BMI) in FINEARTS-HF (FINerenone trial to investigate Efficacy and sAfety superioR to placebo in paTientS with Heart Failure).

Methods: A total of 6,001 patients with HF with NYHA functional class II, III, and IV, a left ventricular ejection fraction of ≥40%, evidence of structural heart disease, and elevated natriuretic peptide levels were randomized to finerenone or placebo.

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A new tool to quantify biodiversity change under landscape transformation.

Ecol Appl

January 2025

Center for Ecology, Evolution and Environmental Change CE3C and CHANGE - Global Change and Sustainability Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal.

Identifying how species richness or diversity changes with different proportions of natural and anthropized environments in the landscape is important for landscape management for conservation. Here, we propose a new method to assess biodiversity changes in landscapes with varying proportions of habitat types. The algorithm is based on the resampling of individuals recorded in different habitats considering both the proportion occupied by each habitat in the landscape and the number of individuals recorded in each habitat.

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A pioneering longterm experiment on mesophotic macrofouling communities in the North Atlantic.

Commun Biol

December 2024

MARE - Marine and Environmental Sciences Centre, ARNET - Aquatic Research Network, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), Funchal, Madeira, Portugal.

The mesophotic zone represents one of our planet's largest and least explored biomes. An increasing number of studies evidence the importance of macrofouling species in marine ecosystems, but information on these communities and the factors influencing their structures at mesophotic depths remain poor. This lack of understanding limits our ability to predict anthropogenic impacts or conduct restoration operations in the mesophotic and the lower boundary of the euphotic zones.

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D-PRISM: a global survey-based study to assess diagnostic and treatment approaches in pneumonia managed in intensive care.

Crit Care

November 2024

Division of Perioperative, Acute, Critical Care and Emergency Medicine, Department of Medicine, University of Cambridge, Level 4, Addenbrooke's Hospital, Hills Road, Cambridge, UK.

Article Synopsis
  • The D-PRISM study investigated global practices for diagnosing and treating pneumonia in ICU settings, focusing on community-acquired, hospital-acquired, and ventilator-associated pneumonia across different countries.
  • A survey gathered responses from 1,296 ICU clinicians across 72 countries, revealing varied diagnostic processes and a lack of standardized microbiological testing, particularly in lower-income regions.
  • Findings indicated that the typical antibiotic treatment duration was 5-7 days, with shorter durations linked to effective antimicrobial stewardship programs in higher-income countries.
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Background: Delirium, an acute brain dysfunction, is proposed to be highly prevalent in clinical care and shown to significantly increase the risk of mortality and dementia.

Objectives: To report on the global prevalence of clinically documented delirium and delirium-related clinical practices in wards caring for paediatric and adult patients in healthcare facilities.

Design: A prospective, cross-sectional, 39-question survey completed on World Delirium Awareness Day, 15 March 2023.

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Article Synopsis
  • The study investigates the safety and efficacy of finerenone in treating heart failure, focusing on differences between men and women.
  • Conducted as part of the FINEARTS-HF trial, it included over 6000 participants aged 40 and older across multiple countries.
  • Results show that finerenone significantly reduces the risk of combined cardiovascular death and heart failure events in both sexes, with women experiencing slightly better outcomes on average.
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: The influence of comorbidity on long-term hospitalization and mortality after COVID-19 in adults (40-59 years) and older adults (≥60 years) is yet to be explored. : This is a Danish population-based cohort study of patients with a first-time positive PCR test for COVID-19 from 1 March 2020, to 28 February 2022 (N = 1,034,103). Exposed cohorts were patients with 1) a Charlson Comorbidity Index (CCI) score of 1-2 and 2) a CCI score ≥3, who were compared to patients without comorbidity (CCI of zero) within the groups of adults (67.

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Comparative analysis of Zero Pressure Geometry and prestress methods in cardiovascular Fluid-Structure Interaction.

Comput Methods Programs Biomed

December 2024

Department of Cardiothoracic Surgery, Santa Marta Hospital, Rua de Santa Marta 50, Lisboa 1169-024, Portugal; Department of Surgery and Human Morphology, NOVA Medical School, Universidade NOVA de Lisboa, Campo Mártires da Pátria 130, Lisboa 1169-056, Portugal. Electronic address:

Background And Objective: Modelling patient-specific aortic biomechanics with advanced computational techniques, such as Fluid-Structure Interaction (FSI), can be crucial to provide effective decision-making indices to enhance current clinical practices. To effectively simulate Ascending Thoracic Aortic Aneurysms (ATAA), the stress-free configuration must be defined. The Zero Pressure Geometry (ZPG) and the Prestress Tensor (PT) are two of the main approaches to tackle this issue.

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Aspergillus fumigatus sensu stricto genetic diversity from cystic fibrosis patients.

Int J Med Microbiol

December 2024

Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande (FURG), Rio Grande, Rio Grande do Sul, Brazil.

We aimed to access the genetic diversity of Apergillus fumigatus strains obtained from cystic fibrosis (CF) patients from southern Brazil. A. fumigatus sensu stricto isolates from respiratory clinical specimens were genotyped by microsatellite markers and azole resistance was evaluated by azole-agar screening.

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Article Synopsis
  • Left ventricular assist devices (LVADs) are commonly used to treat advanced heart failure, improving survival but leading to high rates of arrhythmias (20-50%) within a year after implantation.
  • Arrhythmias in these patients increase the risk of complications, such as additional shocks from implantable defibrillators and potential worsening of right ventricular failure, highlighting the need for tailored management strategies.
  • Effective treatment for these arrhythmias may involve specialized approaches like catheter ablation, though unique challenges exist in accessing arrhythmogenic areas after LVAD surgery, making pre-implantation procedures potentially beneficial.
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Article Synopsis
  • * A 20-year-old male with undiagnosed CD experienced critical health issues during a severe COVID-19 infection, requiring intensive care and showcasing classic signs of hypercortisolism, leading to further diagnostic testing.
  • * After surgical intervention for CD, the patient showed significant health improvements, including better body composition and mood, highlighting the importance of early recognition and timely treatment of hypercortisolism to prevent serious complications.
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Immune-mediated necrotizing myopathy (IMNM) is a rare form of inflammatory myopathy characterized by severe muscle weakness, elevated serum creatine kinase (CK) levels, and myofiber necrosis with minimal inflammatory infiltrates. IMNM is frequently associated with autoantibodies, particularly anti-3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), and is often linked to statin use. However, it can also develop in statin-naïve patients, especially following viral infections.

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Eukaryotic cells possess surveillance mechanisms that detect and degrade defective transcripts. Aberrant transcripts include mRNAs with a premature termination codon (PTC), targeted by the nonsense-mediated decay (NMD) pathway, and mRNAs lacking a termination codon, targeted by the nonstop decay (NSD) pathway. The eukaryotic exosome, a ribonucleolytic complex, plays a crucial role in mRNA processing and turnover through its catalytic subunits PM/Scl100 (Rrp6 in yeast), DIS3 (Rrp44 in yeast), and DIS3L1.

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Background: Remote patient monitoring (RPM) of symptoms using electronic patient reported outcomes (ePROs) has been shown to reduce symptom burden and hospitalizations, increase dose intensity and improve quality of life of patients during systemic therapy being recommended by international guidelines in routine oncology practice. However, implementation in routine care has been slow and faces several challenges. In this study we report on the real-world multi-center implementation of a RPM pathway encompassing weekly patient symptom ePRO reporting with electronic alert notifications triggered to providers for severe or worsening symptoms.

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Background: Critically ill patients are at high risk of Intensive Care Unit (ICU) Acquired weakness, which negatively impacts clinical outcomes. Traditional muscle mass and nutritional status assessments are often impractical in the ICU. Ultrasound offers a promising, non-invasive alternative.

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Beyond Harmful: Exploring Biofilm Formation by Enterococci Isolated from Portuguese Traditional Cheeses.

Foods

September 2024

CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal.

This study investigated the biofilm-forming capabilities of isolates from Portuguese traditional cheeses with protected designation of origin (PDO) status, specifically and . Given the absence of added starter cultures in the cheesemaking process, the characteristics of these cheeses are intrinsically linked to the autochthonous microbiota present in the raw materials and the production environment. Our findings demonstrate that all isolates possess biofilm production abilities, which are crucial for their colonization and persistence within cheese factories, thereby maintaining factory-specific microbial heritage.

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Article Synopsis
  • Male germ cells across animal species share a common origin, indicating they likely follow a conserved genetic program crucial for their identity.
  • The research employs network analysis of the spermatocyte transcriptome from various species to explore the evolutionary origin of male germ cells at the molecular level, revealing a core set of genes and functional associations that have been preserved through evolution.
  • By disrupting male germ cell identity, the study identifies 161 new spermatogenesis-related genes and highlights their implications for human infertility, while promoting a cross-species approach that can be applied to other cell types and diseases.
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Article Synopsis
  • * Recent efforts to stop smoking haven't been put into action yet, and it’s important to see what could happen if smoking rates stay the same or improve.
  • * Researchers used models to predict health outcomes by 2050 based on different scenarios of smoking rates, showing that cutting smoking could greatly improve health and life expectancy.
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