Publications by authors named "Guisset O"

Article Synopsis
  • A study was conducted across 49 ICUs in France to investigate the clinical outcomes and severity of severe Pneumocystis jirovecii pneumonia (PJP), focusing on how delayed antibiotic treatment and corticosteroid therapy affect patient survival.
  • The study included 158 patients, mainly admitted due to acute respiratory failure, and found high mortality rates (31.6% in ICU, 40.5% at 6 months), with delayed antibiotic treatment beyond 96 hours linked to a significantly higher risk of death.
  • The results indicate that most patients did not receive preventive antibiotic therapy before needing intensive care, and both delayed antibiotic treatment and the use of corticosteroids worsened mortality rates in those with severe PJP.
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Background: Group A Streptococcus is responsible for severe and potentially lethal invasive conditions requiring intensive care unit (ICU) admission, such as streptococcal toxic shock-like syndrome (STSS). A rebound of invasive group A streptococcal (iGAS) infection after COVID-19-associated barrier measures has been observed in children. Several intensivists of French adult ICUs have reported similar bedside impressions without objective data.

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Psychological resilience (the ability to thrive in adversity) may protect against mental-health symptoms in healthcare professionals during coronavirus disease (COVID-19) waves. To identify determinants of resilience in ICU staff members. In this cross-sectional survey in 21 French ICUs, staff members completed the 10-item Connor-Davidson Resilience Scale, Hospital Anxiety and Depression Scale, and Impact of Event Scale-Revised (for post-traumatic stress disorder [PTSD]).

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  • In September 2023, a botulism outbreak linked to canned sardines affected 15 people in Bordeaux, France, during the Rugby World Cup.
  • Eight patients from four countries were admitted to the ICU, with six needing invasive mechanical ventilation.
  • The incident emphasizes the need for quick global alerts from health authorities to mitigate the impact of health crises during major international events.
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Purpose: Data are scarce regarding the experience of critically ill patients at high risk of death. Identifying their concerns could allow clinicians to better meet their needs and align their end-of-life trajectory with their preferences and values. We aimed to identify concerns expressed by conscious patients at high risk of dying in the intensive care unit (ICU).

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  • Extracellular histones released during cell death contribute to inflammation and cell death, especially in sepsis, highlighting their harmful effects.
  • Clusterin (CLU) is an extracellular protein that may counteract the adverse effects of histones by binding to them and neutralizing their harmful properties.
  • In sepsis patients, lower CLU levels correlate with increased mortality, and studies show that CLU supplementation can enhance survival rates in mouse models of sepsis.
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Background: Immune checkpoint inhibitors (ICI) have revolutionized the management of cancer. They can induce immune-related adverse events (irAE) leading to intensive care unit (ICU) admission. We aimed to describe irAEs for ICU admissions in solid cancer patients treated with ICIs.

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Background: The rise in antimicrobial resistance is a global threat responsible for about 33,000 deaths in 2015 with a particular concern for extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) and has led to a major increase in the use of carbapenems, last-resort antibiotics.

Methods: In this retrospective propensity-weighted multicenter observational study conducted in 11 ICUs, the purpose was to assess the efficacy of non carbapenem regimen (piperacillin-tazobactam (PTZ) + aminoglycosides or 3rd-generation cephalosporin (3GC) + aminoglycosides) as empiric therapy in comparison with carbapenem in extended-spectrum β-lactamase-producing Enterobacterales (ESBL-E) urinary septic shock. The primary outcome was Day-30 mortality.

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Background: Dexamethasone and tocilizumab are used to treat severely ill COVID-19 patients admitted to intensive care units (ICUs). We explored whether combination therapy increased the risk of superinfection compared to dexamethasone alone.

Methods: This observational, retrospective study included critically ill COVID-19 adult patients admitted to our ICU because of respiratory failure.

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Article Synopsis
  • - Study explores the impact of COVID-19-related ARDS on the mental health of family members, particularly focusing on PTSD symptoms compared to ARDS caused by other conditions.
  • - Conducted in 23 ICUs in France, the research included 602 family members and examined their psychological state 90 days post-ICU, utilizing specific assessment scales for PTSD, anxiety, and depression.
  • - Findings indicate that family members of patients who suffered from COVID-19 ARDS reported significantly higher levels of PTSD symptoms compared to those whose relatives had ARDS from other causes.
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Background: In relatives of patients dying in intensive care units (ICUs), inadequate team support can increase the prevalence of prolonged grief and other psychological harm. We aimed to evaluate whether a proactive communication and support intervention would improve relatives' outcomes.

Methods: We undertook a prospective, multicentre, cluster randomised controlled trial in 34 ICUs in France, to compare standard care with a physician-driven, nurse-aided, three-step support strategy for families throughout the dying process, following a decision to withdraw or withhold life support.

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Little data is available on extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) rectal colonization in cancer patients admitted to the intensive care unit (ICU). We aimed to describe the epidemiology of ESBL-E in cancer patients hospitalized in the ICU compared with non-cancer patients. ESBL-E colonization was detected in 6.

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Background: Working in the ICU during the first COVID-19 wave was associated with high levels of mental health disorders.

Research Question: What are the mental health symptoms in health care providers (HCPs) facing the second wave?

Study Design And Methods: A cross-sectional study (October 30-December 1, 2020) was conducted in 16 ICUs during the second wave in France. HCPs completed the Hospital Anxiety and Depression Scale, the Impact of Event Scale-Revised (for post-traumatic stress disorder), and the Maslach Burnout Inventory.

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This study aims to assess the efficacy and safety of convalescent plasma therapy (CPT) in COVID-19 critically ill patients with protracted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNAemia. A retrospective cohort study was conducted in intensive care unit (ICU). All patients with severe COVID-19 pneumonia for whom RNAemia remained positive more than 14 days after onset of the infection were included and given CPT.

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Background: Patients presenting with acute myeloid leukemia (AML) at diagnosis are at high risk of severe complications and death, particularly with high white blood cell (WBC) count. In this retrospective study, we evaluate interest of early and systematic support in the intensive care unit (ICU) for AML with hyperleukocytosis (AML-HL) at diagnosis.

Methods: Patients with AML-HL, defined by WBC > 50 × 10/L, primary referred in ICU ("Early ICU") without organ failure and before initiating chemotherapy induction were compared to patients first admitted in the Hematology Department who required a secondary transfer in ICU ("Late ICU") or not ("No ICU").

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Frontline healthcare providers (HCPs) during the coronavirus disease (COVID-19) pandemic are at high risk of mental morbidity. To assess the prevalence of symptoms of anxiety, depression, and peritraumatic dissociation in HCPs. This was a cross-sectional study in 21 ICUs in France between April 20, 2020, and May 21, 2020.

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Background: As an increasing number of deaths occur in the intensive care unit (ICU), studies have sought to describe, understand, and improve end-of-life care in this setting. Most of these studies are centered on the patient's and/or the relatives' experience. Our study aimed to develop an instrument designed to assess the experience of physicians and nurses of patients who died in the ICU, using a mixed methodology and validated in a prospective multicenter study.

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Article Synopsis
  • COVID-19 has been linked to a high occurrence of acute kidney injury (AKI) in critically ill patients, with a study conducted in Bordeaux including 71 patients showing that 80% developed AKI during their hospital stay.
  • The classification of AKI revealed that 35% had Stage 1, 35% Stage 2, and 30% Stage 3, with most cases being persistent rather than transient, which indicates a more severe condition.
  • The findings highlight that severe COVID-19-related AKI is common and predominantly involves tubulointerstitial damage, with a small percentage of patients recovering their kidney function within two weeks.
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Purpose: Little is known on the incidence of discomfort during the end-of-life of intensive care unit (ICU) patients and the impact of sedation on such discomfort. The aim of this study was to assess the incidence of discomfort events according to levels of sedation.

Methods: Post-hoc analysis of an observational prospective multicenter study comparing immediate extubation vs.

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Purpose: Bereavement research has helped to improve end-of-life practices in the ICU. However, few studies have explored bereaved relatives experience of research participation in this context. We aimed to explore the experience of bereaved relatives' participation in the ARREVE study which included three telephone follow-up calls to complete several quantitative tools.

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Objectives: In the last decades, the number of cancer patients admitted in intensive care units (ICUs) for septic shock has dramatically increased. However, prognosis data remain scarce.

Methods: To assess the 180-day mortality rate in cancer patients admitted to the ICU for septic shock, a 5-year prospective study was performed.

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Objective: Pneumocystis pneumonia (PCP) is now predominantly observed in immunosuppressed non-HIV-infected patients. The sensitivity of the PCR is here higher than direct examination (DE) of respiratory secretions because the infection is caused by a lower inoculum of Pneumocystis jirovecii (P. jirovecii).

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