Publications by authors named "Paer Selim Abback"

Article Synopsis
  • The study focuses on the rising aging population in France and Western Europe, specifically individuals aged 85 and older, and their mortality risk in trauma centers' ICUs.
  • Conducted from 2013 to 2022, the research analyzed 365 severely injured older patients in 14 ICU trauma centers, assessing their frailty and other clinical variables.
  • High mortality rates were found, with 43.5% in the ICU and 45.5% at 30 days, linked to factors like traumatic brain injury and severe hemorrhage, highlighting the need for early geriatric interventions to improve patient outcomes.
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Purpose: Although noninvasive ventilation (NIV) may reduce reintubation in patients with acute hypoxemic respiratory failure following abdominal surgery, this strategy has not been specifically assessed in patients with obesity.

Methods: We conducted a post hoc analysis of a multicenter randomized controlled trial comparing NIV delivered via facial mask to standard oxygen therapy among patients with obesity and acute hypoxemic respiratory failure within 7 days after abdominal surgery. The primary outcome was reintubation within 7 days.

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Article Synopsis
  • Mydriasis during prehospital management of traumatic brain injury (TBI) might indicate severe intracranial hypertension, leading to discussions on whether to use mannitol or hypertonic saline solution (HSS) for treatment.
  • This study aims to determine if HSS is associated with better survival rates in adult trauma patients with TBI and mydriasis compared to mannitol.
  • A cohort of 1,417 patients was analyzed from a national registry, using matching methods to compare outcomes, with no significant differences found in the baseline characteristics or prehospital management of the two treatment groups.
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The clinical features and short-term prognosis of patients admitted to the intensive care unit for herpes hepatitis are lacking. Of 33 patients admitted between 2006 and 2022, 22 were immunocompromised, 4 were pregnant women, and 23 died. Sixteen patients developed a hemophagocytic syndrome.

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Article Synopsis
  • Research using a mouse model of spinal cord injury revealed that lipopolysaccharides (LPS) from gram-negative bacteria worsen NHO development via a specific receptor pathway, but not through gut-related endotoxins.
  • Additionally, a study found that infections from gram-negative bacteria, such as Pseudomonas, are linked to increased NHO in patients with traumatic brain injuries, highlighting the importance of managing infections to reduce the risk of NHO.
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Importance: Electric scooter (e-scooter) use is increasing in France and in many urban environments worldwide. Yet little is known about injuries associated with use of e-scooters.

Objective: To describe characteristics and outcomes of major trauma involving e-scooters.

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  • The study examined fetal radiation exposure in pregnant women with trauma, focusing on how different injury assessments impact radiation doses to the fetus.
  • Conducted in multiple hospitals, the research assessed cumulative radiation doses in 54 pregnant women, finding that most underwent whole-body CT scans, which led to a median fetal dose of 38 mGy, below the 100 mGy safety threshold.
  • Results showed lower maternal mortality (6%) compared to fetal mortality (17%), indicating that a selective imaging strategy can be safe in skilled medical settings for specific cases of trauma.
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Purpose: Acute liver failure (ALF) is characterized by hepatic encephalopathy (HE) often due to intracranial hypertension (ICH). The risk/benefit-balance of intraparenchymal pressure catheter monitoring is controversial during ALF.

Aims: Perform an evaluation of transcranial Doppler (TCD) use in patients with ALF listed for emergency liver transplantation.

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Importance: Optimal transfusion strategies in traumatic hemorrhage are unknown. Reports suggest a beneficial effect of 4-factor prothrombin complex concentrate (4F-PCC) on blood product consumption.

Objective: To investigate the efficacy and safety of 4F-PCC administration in patients at risk of massive transfusion.

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Background: Non-invasive ventilation (NIV) and oxygen therapy (high-flow nasal oxygen [HFNO] or standard oxygen) following extubation have never been compared in critically ill patients with obesity. We aimed to compare NIV (alternating with HFNO or standard oxygen) and oxygen therapy (HFNO or standard oxygen) following extubation of critically ill patients with obesity.

Methods: In this multicentre, parallel group, pragmatic randomised controlled trial, conducted in 39 intensive care units in France, critically ill patients with obesity undergoing extubation were randomly assigned (1:1) to either the NIV group or the oxygen therapy group.

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Purpose: Traumatic hemorrhagic shock (THS) is a complex, dynamic process and, no consensual definition of THS is available. This study aims (1) to explore existing definitions of traumatic hemorrhagic shock (THS), (2) to identify essential components of these definitions and (3) to illustrate in a pragmatic way the consequences of applying five of these definitions to a trauma registry.

Methods: We conducted (1) a scoping review to identify the definitions used for traumatic hemorrhagic shock (THS); (2) an international experts survey to rank by relevance a selection of components extracted from these definitions and (3) a registry-based analysis where several candidate definitions were tested in a large trauma registry to evaluate how the use of different definitions affected baseline characteristics, resources use and patient outcome.

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Purposes: External ventricular drainage (EVD) is frequently used to control raised intracranial pressure after traumatic brain injury. However, the available evidence about its effectiveness in this context is limited. The aim of this study is to evaluate the effectiveness of EVD to control intracranial pressure and to identify the clinical and radiological factors associated with its success.

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Purpose: Blunt cerebrovascular injuries (BCVI) are a rare but serious complication after trauma. Among patients with BCVI, neurological status is altered in 30% of cases and the prognosis seems to be associated with ischemic complications. The aim of this study was to assess the long-term outcome of BCVI-associated ischemic events.

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Background: Deviation from guidelines is frequent in emergency situations, and this may lead to increased mortality. Probably because of time constraints, 55% is the greatest reported guidelines compliance rate in severe trauma patients. This study aimed to identify among all available recommendations a reasonable bundle of items that should be followed to optimize the outcome of hemorrhagic shocks (HSs) and severe traumatic brain injuries (TBIs).

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Background: During the SARS-CoV-2 pandemic, the French Government imposed various containment strategies, such as severe lockdown (SL) or moderate lockdown (ML). The aim of this study was to evaluate the effect of both strategies on severe trauma admissions and ICU capacity in Ile-de-France region (Paris Area).

Main Text: We conducted a multicenter cohort-based observational study from 1January 2017 to 31th December 2020, including all consecutive trauma patients admitted to the trauma centers of Ile-de-France region participating in the national registry (Traumabase®).

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Background: We aimed to assess the incidence and the risk factors for secondary wound infections associated to high-energy ammunition injuries (HEAI) in the cohort of civilian casualties from the 2015 terrorist attacks in Paris.

Methods: This retrospective multi-centric study included casualties presenting at least one HEAI who underwent surgery during the first 48 h following hospital admission. HEAI-associated infection was defined as a wound infection occurring within the initial 30 days following trauma.

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Purpose: The aim of this work is to study a cohort of patients of ISS < 15 admitted to a TC, and to determine the number of patients that ultimately benefited from the skills and resources specific of a level 1 trauma center.

Methods: Retrospective study from a prospective cohort of patients admitted to TC (Beaujon Hospital, APHP) for suspected severe trauma from January 2011 to December 2017. The main outcome criterion was the use of surgery or interventional radiology within the first 24 h after admission of patients with ISS < 15.

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Background And Aims: Patients with cirrhosis and acute-on-chronic liver failure (ACLF) have immunosuppression, indicated by an increase in circulating immune-deficient monocytes. The aim of this study was to investigate simultaneously the major blood-immune cell subsets in these patients.

Material And Methods: Blood taken from 67 patients with decompensated cirrhosis (including 35 critically ill with ACLF in the intensive care unit), and 12 healthy subjects, was assigned to either measurements of clinical blood counts and microarray (genomewide) analysis of RNA expression in whole-blood; microarray (genomewide) analysis of RNA expression in blood neutrophils; or assessment of neutrophil antimicrobial functions.

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Article Synopsis
  • The study examined the link between early hyperoxemia (high oxygen levels) and in-hospital mortality in trauma patients, hypothesizing that high oxygen levels on admission (PaO ≥ 150 mmHg) would lead to higher death rates.
  • Data from a French trauma registry involving 5,912 patients were analyzed, revealing that though hyperoxemic patients initially had higher mortality rates, after adjusting for various factors, they actually showed lower in-hospital mortality compared to normoxemic patients.
  • The findings suggest that early hyperoxemia may be protective rather than harmful for trauma patients, challenging existing beliefs about high oxygen levels in critically ill patients.
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Background: Fibrinogen concentrate is widely used in traumatic hemorrhagic shock despite weak evidence in the literature. The aim of the study was to evaluate the effect of fibrinogen concentrate administration within the first 6 hours on 24-hour all-cause mortality in traumatic hemorrhagic shock using a causal inference approach.

Methods: Observational study from a French multicenter prospective trauma registry was performed.

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Background: Acute acidaemia is frequently observed during critical illness. Sodium bicarbonate infusion for the treatment of severe metabolic acidaemia is a possible treatment option but remains controversial, as no studies to date have examined its effect on clinical outcomes. Therefore, we aimed to evaluate whether sodium bicarbonate infusion would improve these outcomes in critically ill patients.

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Objective: Recent preclinical and clinical data suggest that thoracic epidural analgesia, a technique primarily aimed at decreasing pain, might exert anti-inflammatory effects, enhance splanchnic and pancreatic blood flow during acute pancreatitis; however, the influence of epidural analgesia on mortality remains under investigated in this setting. This study was therefore designed to assess the impact of epidural analgesia on mortality in ICU patients with acute pancreatitis.

Design: Multicenter retrospective, observational, cohort study.

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Article Synopsis
  • The study aimed to determine if noninvasive ventilation (NIV) can lower the need for invasive mechanical ventilation in patients suffering from hypoxemic acute respiratory failure after abdominal surgery.
  • During a clinical trial involving 293 patients across 20 French intensive care units, participants were divided into two groups: one receiving standard oxygen therapy and the other receiving NIV through a facial mask.
  • Results showed that patients using NIV had a lower rate of reintubation (33.1%) compared to those receiving standard therapy (45.5%), indicating NIV may be more effective in preventing the need for invasive ventilation.
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Introduction: Balanced analgesia, using both opioid and nonopioids agents, has become the standard care for postoperative pain management. Ketamine, a compound with analgesic and antihyperalgesic properties, has been shown to decrease postoperative pain and opioid requirements in adults. The goal of the present meta-analysis was to investigate postoperative analgesic properties of ketamine in pediatric patients.

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