Publications by authors named "Morris I"

Objectives: Intubation is a common procedure in acute hypoxemic respiratory failure (AHRF), with minimal evidence to guide decision-making. We conducted a survey of when to intubate patients with AHRF to measure the influence of clinical variables on intubation decision-making and quantify variability.

Design: Factorial vignette-based survey asking "Would you recommend intubation?" Respondents selected an ordinal recommendation from a 5-point scale ranging from "Definite no" to "Definite yes" for up to ten randomly allocated vignettes.

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Reciprocal communication between adipocytes and immune cells is essential to maintain optimal adipose tissue (AT) functionality. Amongst others, adipocytes directly interact with invariant NKT cells (iNKT cells), which in turn secrete various cytokines. A lipid-rich microenvironment, as observed in obesity, skews this adipocyte-driven cytokine output towards a more inflammatory output.

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Article Synopsis
  • - This study investigates how the medications propofol and fentanyl behave in the body (PK/PD) in patients using veno-venous extracorporeal membrane oxygenation (V-V ECMO) due to a lack of existing data in this area.
  • - Conducted at Toronto General Hospital ICU, the research involved 11 patients monitored over a median of 146 hours, revealing that both medications follow a two-compartment model for clearance and that over-sedation was common despite increased clearance rates shortly after ECMO began.
  • - Results show that while clearance of sedatives increased temporarily after ECMO initiation and differences were noted based on sex, sedation effectiveness varied and respiratory effort was inconsistent regardless of medication levels.
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  • Patients with hematological malignancies face high risks of serious complications, and this study aimed to assess how hyperoxemia (high levels of oxygen in the blood) impacts mortality rates within 28 days in critically ill individuals.
  • An analysis of data from over 11,000 patients revealed a U-shaped relationship between arterial oxygen levels (PaO) and mortality, indicating that both low and high oxygen levels can increase the risk of death.
  • The study found that excessive use of oxygen was significantly linked to increased mortality rates, especially in certain patient groups, highlighting the importance of careful oxygen management in these critically ill patients.
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  • The study examines the role of the pseudokinase Tribbles 3 (TRIB3) in energy metabolism by using Trib3 knockout mice to understand its effects on fat cells and overall metabolic health.
  • Results show that while Trib3 mice are fatter, their insulin sensitivity doesn't change, and their fat cells are smaller with increased proliferation markers, suggesting TRIB3 affects how these cells grow and store fat.
  • Overall, TRIB3 is implicated in various cellular processes through different signaling pathways, indicating it plays a crucial role in maintaining the health of fat tissue rather than just one specific function.
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Background: Innovative technology can enhance patient access to healthcare but must be successfully implemented to be effective.

Objective: We evaluated Department of Veterans Affairs' (VA's) implementation of My VA Images, a direct-to-patient asynchronous teledermatology mobile application enabling established dermatology patients to receive follow-up care remotely instead of in-person.

Design /participants/approach: Following pilot testing at 3 facilities, the app was introduced to 28 facilities (4 groups of 7) every 3 months using a stepped-wedge cluster-randomized design.

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Detecting a non-zero electric dipole moment in a particle would unambiguously signify physics beyond the Standard Model. A potential pathway towards this is the detection of a nuclear Schiff moment, the magnitude of which is enhanced by the presence of nuclear octupole deformation. However, due to the low production rate of isotopes featuring such 'pear-shaped' nuclei, capturing, detecting and manipulating them efficiently is a crucial prerequisite.

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  • The diaphragm is crucial for breathing, and its dysfunction can lead to breathing difficulties and complications, especially in patients on mechanical ventilation.
  • Using point-of-care ultrasound allows for an effective and accurate assessment of diaphragm thickness and its function during breathing, which can help in diagnosing issues.
  • The article outlines best practices for measuring diaphragm activity, aiding in treatment monitoring and improving outcomes for both healthy people and those with respiratory illnesses.
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Background: Teledermatology has been utilized in the United States Department of Veterans Affairs (VA) for decades but continues to have incomplete penetration. VA has funded an initiative to enhance access to dermatology services since 2017 to support asynchronous teledermatology for Veterans living in rural areas. As part of an ongoing evaluation of this program, we assessed the teledermatology activity between the fiscal years 2020 and 2022.

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Diaphragm inactivity during invasive mechanical ventilation leads to diaphragm atrophy and weakness, hemodynamic instability, and ventilatory heterogeneity. Absent respiratory drive and effort can, therefore, worsen injury to both lung and diaphragm and is a major cause of failure to wean. Phrenic nerve stimulation (PNS) can maintain controlled levels of diaphragm activity independent of intrinsic drive and as such may offer a promising approach to achieving lung and diaphragm protective ventilatory targets.

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Background: The Enhancing Quality of Prescribing Practices for Older Veterans Discharged from the Emergency Department (EQUIPPED) program developed an audit and feedback health information technology (IT) solution with the intent to replace the in-person academic detailing service provided by the program. The EQUIPPED dashboard provides emergency department (ED) providers with a personalized view of their prescribing performance.

Objectives: Here, we analyze the association between ED provider characteristics and viewership of the EQUIPPED dashboard, adding insight into strategies for addressing barriers to initial use.

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Diaphragm neurostimulation consists of placing electrodes directly on or in proximity to the phrenic nerve(s) to elicit diaphragmatic contractions. Since its initial description in the 18th century, indications have shifted from cardiopulmonary resuscitation to long-term ventilatory support. Recently, the technical development of devices for temporary diaphragm neurostimulation has opened up the possibility of a new era for the management of mechanically ventilated patients.

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Objectives: The Enhancing the Quality of Prescribing Practices for Older Adults Discharged from the Emergency Department (EQUIPPED) medication safety program involves three core components including provider education, clinical decision support, and audit and feedback using the American Geriatrics Society Beers Criteria to determine potentially inappropriate medications (PIMs). This study evaluated implementation of audit and feedback through a centralized informatics-based dashboard compared to academic detailing delivered one on one by an EQUIPPED champion.

Methods: In a cluster-randomized study (October 2019-September 2021), eight VA emergency department (EDs) implemented either the academic detailing (n = 4) or the dashboard (n = 4) strategy for the audit and feedback component of EQUIPPED.

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Invariant natural killer T cells (iNKT cells) can be activated through binding antigenic lipid/CD1d complexes to their TCR. Antigenic lipids are processed, loaded, and displayed in complex with CD1d by lipid antigen presenting cells (LAPCs). The mechanism of lipid antigen presentation via CD1d is highly conserved with recent work showing adipocytes are LAPCs that, besides having a role in lipid storage, can activate iNKT cells and play an important role in systemic metabolic disease.

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ICU clinicians rely on bedside physiological measurements to inform many routine clinical decisions. Because deranged physiology is usually associated with poor clinical outcomes, it is tempting to hypothesize that manipulating and intervening on physiological parameters might improve outcomes for patients. However, testing these hypotheses through mathematical models of the relationship between physiology and outcomes presents a number of important methodological challenges.

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To improve patient access to skin care, the Department of Veterans Affairs (VA) developed a patient-facing asynchronous mobile teledermatology application (app), which allows patients to follow up remotely with dermatologists. To understand how the app would be received in VA, we examined Organizational Readiness for Change (ORC), an important prelude to effective implementation, which includes the shared resolve and collective ability of organizational members to implement a change. We used a mixed-methods multiple case study approach to assess ORC at three VA facilities.

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Evolutionary history.

Evol Psychol

March 2022

Few academic historians take an evolutionary perspective on the past, but this outcome was not inevitable. Leading eighteenth-century intellectuals often took evolutionary perspectives, but particularists largely discredited them in and after the 1780s. By the time Spencer and Darwin revived evolutionism in the 1850s, distinctive historical questions and methods were very well-established.

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Purpose Of Review: Extracorporeal membrane oxygenation (ECMO) offers advanced mechanical support to patients with severe acute respiratory and/or cardiac failure. Ensuring an adequate therapeutic approach as well as prevention of ECMO-associated complications, by means of timely liberation, forms an essential part of standard ECMO care and is only achievable through continuous monitoring and evaluation. This review focus on the cardiorespiratory monitoring tools that can be used to assess and titrate adequacy of ECMO therapy; as well as methods to assess readiness to wean and/or discontinue ECMO support.

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