Publications by authors named "Brice Lortat Jacob"

Article Synopsis
  • A study was conducted to compare the outcomes of lung transplantation (LT) based on whether the surgery took place during the day or night.
  • The study included 253 patients between January 2015 and December 2020, with 66% undergoing surgery during the day and 34% at night.
  • Results showed that while mortality rates at 90 days and one year were similar for both groups, daytime procedures had a higher rate of one-year airway complications compared to nighttime surgeries.
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Background: Antifibrotic agents (AFAs) are now standard-of-care for idiopathic pulmonary fibrosis (IPF). Concerns have arisen about the safety of these drugs in patients undergoing lung transplantation (LTx).

Methods: We performed a multi-centre, nationwide, retrospective, observational study of French IPF patients undergoing LTx between 2011 and 2018 to determine whether maintaining AFAs in the peri-operative period leads to increased bronchial anastomoses issues, delay in skin healing and haemorrhagic complications.

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Article Synopsis
  • The study investigates the effectiveness of Extended Focused Assessment with Sonography in Trauma (eFAST) for patients with stab wounds to the chest or abdomen, comparing it to CT scans.
  • Out of 200 patients, eFAST was particularly valuable in identifying urgent conditions like cardiac tamponade and haemothorax, with high sensitivity and specificity for these injuries.
  • However, eFAST showed lower sensitivity for diagnosing pneumothorax and haemoperitoneum, indicating a need for further research across multiple centers to validate these findings.
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  • - The study investigates the risk factors and incidence of prolonged mechanical ventilation (PMV) after lung transplantation (LT) in patients at Bichat Claude Bernard Hospital from 2016 to 2020, finding that 28% required PMV for an average of 34 days.
  • - Significant independent risk factors for PMV include higher body mass index (BMI), diabetes in the recipient, ECMO support during surgery, and receiving more than 5 red blood cell transfusions.
  • - One-year survival rates show a concerning increase in mortality for patients on PMV (44%) compared to those without it (15%), highlighting the need to consider preoperative risk factors like BMI and diabetes in recipient selection.
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A 24-year-old Senegalese woman without remarkable history except anemia and iron deficiency related to excessive menstrual bleeding and sickle cell trait was admitted to our internal medicine department with 4-month fever, weight loss (-13 kg), dyspnea for limited efforts, intermittent productive cough, and bilateral metacarpophalangeal (MCP) and interphalangeal arthralgia. She was born and lived in France. She traveled previously to Senegal in 2015.

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SARS-CoV-2 infection goes beyond acute pneumonia, as it also impacts lipid metabolism. Decreased HDL-C and LDL-C levels have been reported in patients with COVID-19. The lipid profile is a less robust biochemical marker than apolipoproteins, components of lipoproteins.

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Article Synopsis
  • The study examined the presence and effects of culture-positive preservation fluid (PF) in lung transplant patients from 2015 to 2020, finding that 30.6% had PF that tested positive for microorganisms.
  • Common bacteria like Staphylococcus aureus and Escherichia coli were identified, and a significant portion of culture-positive samples were polymicrobial.
  • Patients with culture-positive PF experienced lower 30-day survival rates (85.5%) compared to those with culture-negative PF (94.7%), prompting the need for further research to understand the implications and management of culture-positive PF.
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Background: The outcomes of lung transplantation (LT) recipients who received a graft from a brain-dead donor after successful resuscitation from cardiac arrest (CA donors) have been poorly described. This study compared the one-year survival of LT recipients depending on the CA status of the donor.

Methods: This prospective observational single-centre study analysed all consecutive patients who underwent LT at Bichat Claude Bernard Hospital, Paris, between January 2016 and December 2020.

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High-density lipoproteins (HDLs), whose main role is the reverse transport of cholesterol, also have pleiotropic anti-inflammatory, antioxidant, anti-apoptotic and anti-infectious properties. During sepsis, HDL cholesterol (HDL-C) concentration is low, HDL particle functionality is altered, and these modifications are correlated with poor outcomes. Based on the protective effects of HDL, we hypothesized that HDL-C levels could be associated with lung transplantation (LT) outcome.

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Background: Airway complications are frequent after lung transplantation (LT), as they affect up to 23% of recipients. The implication of perioperative extracorporeal membrane oxygenation (ECMO) support and haemodynamic instability has never been specifically assessed. The first aim of this study was to explore the impact of perioperative ECMO support on bronchial anastomotic dehiscence (BAD) at Day 90 after LT.

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We aimed to describe the prevalence, risk factors, morbidity and mortality associated with the occurrence of bacteraemia during the postoperative ICU stay after lung transplantation (LT). We conducted a retrospective single-centre study that included all consecutive patients who underwent LT between January 2015 and October 2021. We analysed all the blood cultures drawn during the postoperative ICU stay, as well as samples from suspected infectious sources in case of bacteraemia.

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We evaluated the contribution of artificial intelligence in predicting the risk of acute cellular rejection (ACR) using early plasma levels of soluble CD31 (sCD31) in combination with recipient haematosis, which was measured by the ratio of arterial oxygen partial pressure to fractional oxygen inspired (PaO/FiO) and respiratory SOFA (Sequential Organ Failure Assessment) within 3 days of lung transplantation (LTx). CD31 is expressed on endothelial cells, leukocytes and platelets and acts as a "peace-maker" at the blood/vessel interface. Upon nonspecific activation, CD31 can be cleaved, released, and detected in the plasma (sCD31).

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Background: During the COVID-19 first wave in France, the capacity of intensive care unit (ICU) beds almost doubled, mainly because of the opening of temporary ICUs with staff and equipment from anaesthesia.

Objectives: We aim to investigate if the initial management in temporary ICU is associated with a change in ICU mortality and short-term prognosis.

Design: Retrospective single-centre cohort study.

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Introduction: The maximum gain in quality of life after lung transplantation (LT) is expected between six months and one year after LT, as the occurrence of chronic lung allograft dysfunction may mask the beneficial effects beyond one year. Thus, the postoperative period could be the cornerstone of graft success. We sought to describe the factors present before postoperative admission to the ICU and associated with favorable, arduous or fatal pathway within 90 days of LT.

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Article Synopsis
  • * A study in an ICU involving 219 septic patients showed that 15% had sepsis-associated liver dysfunction, which was associated with lower HDL levels.
  • * Despite the lower HDL-C concentrations in patients with liver dysfunction, no overall relationship was found between lipoprotein levels and liver dysfunction markers affecting outcomes.
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Background: The effect of red blood cell (RBC) transfusion on mortality after lung transplantation (LT) was assessed in some retrospective studies, with contradictory results. The first aim of this study was to assess the 90-day survival of LT recipients according to massive intraoperative transfusion (MIOT).

Methods: This prospective, observational, single-centre study analysed the intraoperative transfusion (IOT) of all consecutive LT recipients between January 2016 and February 2019.

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Background: Early pneumonia is an independent risk factor for 1-y mortality after lung transplantation (LTx). Pseudomonas aeruginosa is the most common isolate in early pneumonia and is also associated with an increased risk of chronic lung allograft dysfunction. The aim of our study was to evaluate the efficacy of secondary prophylaxis with inhaled colistin (IC) in preventing the recurrence of P aeruginosa or extended-spectrum β-lactamase-producing Enterobacterales (ESBL-PE) pneumonia in the postoperative period in the intensive care unit after LTx.

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Background: A 15-month outbreak of carbapenemase-producing Enterobacterales (CPE) occurred in the surgical intensive care unit (SICU) of our institution. We aimed to estimate the financial impact of this outbreak from the perspective of the French public health insurance system.

Methods: The characteristics of the colonised/infected CPE patients and outbreak management according to French national guidelines were prospectively collected.

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High-density lipoproteins (HDLs) have multiple endothelioprotective properties. During SARS-CoV-2 infection, HDL-cholesterol (HDL-C) concentration is markedly reduced, and studies have described severe impairment of the functionality of HDL particles. Here, we report a multi-omic investigation of the first administration of recombinant HDL (rHDL) particles in a severe COVID-19 patient in an intensive care unit.

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Background: In patients receiving single lung transplantation for idiopathic pulmonary fibrosis, worsening of fibrosis of the native lung is usually progressive over time, with no significant effects on gas exchange.

Case Presentation: Here, we describe the cases of two Caucasian male recipients of single lung transplants for idiopathic pulmonary fibrosis, 65 and 62 years of age, who exhibited acute worsening of lung fibrosis after an episode of serious viral infection (cytomegalovirus primo-infection in one case and COVID-19 in the other). In both cases, along with opacification of the native lung over several days, the patients presented acute respiratory failure that required the use of high-flow nasal oxygen therapy.

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Necrotizing soft-tissue infection (NSTI) is a life-threatening pathology that often requires management in intensive care unit (ICU). Therapies consist of early diagnosis, adequate surgical source control, and antimicrobial therapy. Whereas guidelines underline the need for appropriate routine microbiological cultures before starting antimicrobial therapy in patients with suspected sepsis or septic shock, delaying adequate therapy also strongly increases mortality.

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Background: Predictive factors of intensive care readmissions after lung transplantation (LT) have not been established. The main objective of this study was to assess early risk factors for ICU readmission during the first year after LT.

Methods: This retrospective, observational, single-centre study included all consecutive patients who underwent LT in our institution between January 2016 and November 2019.

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Extracorporeal membrane oxygenation (ECMO), a relevant technology for patients with acute respiratory distress syndrome (ARDS) or acute cardiac failure (ACF), is a frequent cause of systemic inflammatory response syndrome. During sepsis, HDL cholesterol (HDL-C) and LDL cholesterol (LDL-C) concentrations decrease, and an association between low lipoprotein levels and poor outcomes was reported. There are no data from patients undergoing ECMO.

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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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