Publications by authors named "Daniel Niven"

Background: The Abdominal Compartment Society (WSACS) established consensus definitions and recommendations for the management of intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) in 2006, and they were last updated in 2013. The WSACS conducted an international survey between 2022 and 2023 to seek the agreement of healthcare practitioners (HCPs) worldwide on current and new candidate statements that may be used for future guidelines.

Methods: A self-administered, online cross-sectional survey was conducted under the auspices of the WSACS to assess the level of agreement among HCPs over current and new candidate statements.

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Purpose: There is significant variability in the application of positive end-expiratory pressure (PEEP) in patients undergoing invasive mechanical ventilation. There are numerous studies assessing methods of determining optimal PEEP, but many methods, patient populations, and study settings lack high-quality evidence. Guidelines make no recommendations about the use of a specific method because of equipoise and lack of high-quality evidence.

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Article Synopsis
  • The study compiled qualitative evidence on how COVID-19 visitation restrictions affected patients, families, and healthcare professionals in NICUs, PICUs, and adult ICUs.
  • Researchers analyzed 184 studies and found 54 key impacts, including disruptions to family-centered care, negative mental health effects, and loss of support systems and bonding opportunities.
  • The review emphasizes the need for compassionate family presence policies in future health crises to address these issues and improve care.
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  • A study was conducted to evaluate the effects of the proton-pump inhibitor pantoprazole on critically ill patients undergoing invasive ventilation, comparing it to a placebo.
  • The trial included 4,821 patients and found that pantoprazole significantly reduced the incidence of clinically important upper gastrointestinal bleeding compared to placebo (1.0% vs. 3.5%).
  • However, there was no significant difference in overall mortality rates at 90 days between the pantoprazole group (29.1%) and the placebo group (30.9%).
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Article Synopsis
  • - The study aimed to define what constitutes "patient-important" upper gastrointestinal bleeding during critical illness for a randomized trial, focusing on the perspectives of ICU survivors and their family members.
  • - Using interviews and focus groups, researchers gathered qualitative data, which revealed that patient-important bleeding is linked to serious outcomes like death, disability, and extended hospital stays, along with specific medical interventions.
  • - Findings highlighted that patients and families view gastrointestinal bleeding differently than traditional clinical definitions, emphasizing the context and effects of treatments as crucial to understanding its importance.
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Background: Untreated pain is associated with short-term and long-term consequences, including post-traumatic stress disorder and insomnia. Side effects of some analgesic medications include dysphoria, hallucinations and delirium. Therefore, both untreated pain and analgesic medications may be risk factors for delirium.

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Objective: To describe a study protocol and statistical analysis plan (SAP) for the identification and treatment of hypoxemic respiratory failure (HRF) and acute respiratory distress syndrome (ARDS) with protection, paralysis, and proning (TheraPPP) study prior to completion of recruitment, electronic data retrieval, and analysis of any data.

Design: TheraPPP is a stepped-wedge cluster randomised study evaluating a care pathway for HRF and ARDS patients. This is a type-1 hybrid effectiveness-implementation study design evaluating both intervention effectiveness and implementation; however primarily powered for the effectiveness outcome.

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Purpose: The ABCDEF bundle may improve delirium outcomes among intensive care unit (ICU) patients, however population-based studies are lacking. In this study we evaluated effects of a quality improvement initiative based on the ABCDEF bundle in adult ICUs in Alberta, Canada.

Material And Methods: We conducted a pre-post, registry-based clinical trial, analysed using interrupted time series methodology.

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Background: A significant gap exists between ideal evidence-based practice and real-world application of evidence-informed therapies for patients with hypoxaemic respiratory failure (HRF) and acute respiratory distress syndrome (ARDS). Pathways can improve the quality of care provided by helping integrate and organise the use of evidence informed practices, but barriers exist that can influence their adoption and successful implementation. We sought to identify barriers to the implementation of a best practice care pathway for HRF and ARDS and design an implementation science-based strategy targeting these barriers that is tailored to the critical care setting.

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Rationale & Objective: To evaluate follow-up care of critically ill patients with acute kidney injury (AKI).

Study Design: Retrospective cohort study.

Setting & Participants: Patients admitted to the intensive care unit (ICU) with AKI in Alberta, Canada from 2005 to 2018, who survived to discharge without kidney replacement therapy or estimated glomerular filtration rate <15 mL/min/1.

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Introduction: Titrated application of positive end-expiratory pressure (PEEP) is an important part of any mechanical ventilation strategy. However, the method by which the optimal PEEP is determined and titrated varies widely. Methods for determining optimal PEEP have been assessed using a variety of different study designs and patient populations.

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Article Synopsis
  • - The study aims to understand the values and preferences of patients and families regarding upper gastrointestinal bleeding treatments, challenging traditional definitions that are primarily clinical.
  • - Utilizing a mixed-methods approach, the research involves interviews and focus groups with ICU survivors and their families after providing educational materials to gather their insights.
  • - Approved by ethics boards, the findings will contribute to creating meaningful trial outcomes for stress ulcer prophylaxis and be published for wider dissemination.
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Background: Antipsychotic medications do not alter the incidence or duration of delirium, but these medications are frequently prescribed and continued at transitions of care in critically ill patients when they may no longer be necessary or appropriate.

Objective: The purpose of this study was to identify and describe relevant domains and constructs that influence antipsychotic medication prescribing and deprescribing practices among physicians, nurses, and pharmacists that care for critically ill adult patients during and following critical illness.

Design: We conducted qualitative semi-structured interviews with critical care and ward healthcare professionals including physicians, nurses, and pharmacists to understand antipsychotic prescribing and deprescribing practices for critically ill adult patients during and following critical illness.

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Introduction: Clostridioides difficile infection (CDI) is a serious complication of critical illness. The objective of the study was to determine its incidence, prevalence, timing, severity, predictors, and outcomes.

Methods: We performed a prospective nested cohort study of CDI within a randomized trial comparing Lactobacillus rhamnosus GG to placebo.

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Article Synopsis
  • Antipsychotic medications are often prescribed for critically ill patients, and this study aimed to create consensus statements on how to minimize and deprescribe these medications during transitions of care.
  • The research involved a modified Delphi consensus process with three rounds of surveys, where stakeholders rated their perceptions on antipsychotic use and strategies for deprescribing using a 9-point Likert scale.
  • Ultimately, six key strategies were prioritized for antipsychotic minimization, focusing on prescribing only to patients in specific situations, enhancing communication among healthcare staff, and ensuring proper care management.
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Purpose: We sought to compare the cost-effectiveness of probiotics and usual care with usual care without probiotics in mechanically ventilated, intensive care unit patients alongside the Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial (PROSPECT).

Methods: We conducted a health economic evaluation alongside the PROSPECT randomized control trial (October 2013-March 2019). We adopted a public healthcare payer's perspective.

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Background: Antipsychotic medications are frequently prescribed in acute care for clinical indications other than primary psychiatric disorders such as delirium. Unfortunately, they are commonly continued at hospital discharge and at follow-ups thereafter. The objective of this scoping review was to characterize antipsychotic medication prescribing practices, to describe healthcare professional perceptions on antipsychotic prescribing and deprescribing practices, and to report on antipsychotic deprescribing strategies within acute care.

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Mortality is a well-established patient-important outcome in critical care studies. In contrast, morbidity is less uniformly reported (given the myriad of critical care illnesses and complications of each) but may have a common end-impact on a patient's functional capacity and health-related quality-of-life (HRQoL). Survival with a poor quality-of-life may not be acceptable depending on individual patient values and preferences.

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Objective: To assess the effect of family presence on the prevalence and duration of delirium in adults admitted to an ICU.

Design: Retrospective cohort study.

Setting: Medical-surgical ICUs in Alberta, AB, Canada.

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Introduction: Antipsychotic medications are commonly prescribed off-label in acutely ill patients for non-psychiatric clinical indications such as delirium or insomnia. New prescription initiation of antipsychotics in acute care settings increases the proportion of patients discharged home on antipsychotics without approved clinical indication. Long-term use of antipsychotics is associated with increased risk of sudden cardiac death, falls and cognitive impairment.

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Background: As the Coronavirus Disease-2019 (COVID-19) pandemic continues, healthcare providers struggle to manage both COVID-19 and non-COVID patients while still providing high-quality care. We conducted a systematic review/meta-analysis to describe the effects of the COVID-19 pandemic on patients with non-COVID illness and on healthcare systems compared to non-pandemic epochs.

Methods: We searched Ovid MEDLINE/EMBASE/Cochrane Database of Systematic Reviews/CENTRAL/CINAHL (inception to December 31, 2020).

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Article Synopsis
  • The study aimed to analyze feedback from monitoring visits in a multicenter trial testing probiotics for critically ill patients in Canada.
  • A total of 75 unique findings from 37 centers were categorized into 10 quality management domains, with most issues related to missing operational records and the informed consent process.
  • The overall results indicated that while documentation issues were prevalent, there were minimal threats to data integrity, privacy, or patient safety.
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Background: Redundancy in laboratory blood tests is common in intensive care units (ICUs), affecting patients' health and increasing health care expenses. Medical communities have made recommendations to order laboratory tests more judiciously. Wise selection can rely on modern data-driven approaches that have been shown to help identify low-yield laboratory blood tests in ICUs.

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Importance: The efficacy and safety of prone positioning is unclear in nonintubated patients with acute hypoxemia and COVID-19.

Objective: To evaluate the efficacy and adverse events of prone positioning in nonintubated adult patients with acute hypoxemia and COVID-19.

Design, Setting, And Participants: Pragmatic, unblinded randomized clinical trial conducted at 21 hospitals in Canada, Kuwait, Saudi Arabia, and the US.

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Introduction: Overuse of cardiovascular healthcare services, defined as the provision of low-value (ineffective, harmful, cost-ineffective) tests, medications and procedures, may be common and associated with increased patient harm and health system inefficiencies and costs. We seek to systematically review the evidence for overuse of different cardiovascular healthcare services in high-income countries.

Methods And Analysis: We will search MEDLINE, EMBASE and Evidence-Based Medicine Reviews from 2010 onwards.

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