jean-michel Constantin

jean-michel Constantin
Hôpital La Pitié Salpêtrière (Groupe Hospitalier "La Pitié Salpêtrière - Charles Foix") · Anesthesiology critical care and perioperatrive medicine

MD, PhD

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441
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Publications

Publications (441)
Article
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Background Severe acute respiratory syndrome coronavirus-2 (SARS–CoV-2)-induced acute respiratory distress syndrome (ARDS) causes high mortality. Umbilical cord-derived mesenchymal stromal cells (UC-MSCs) have potentially relevant immune-modulatory properties, whose place in ARDS treatment is not established. This phase 2b trial was undertaken to a...
Article
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Background Acute respiratory distress syndrome (ARDS) has different phenotypes and distinct short-term outcomes. Patients with non-focal ARDS have a higher short-term mortality than focal ones. The aim of this study was to assess the impact of the morphological phenotypes of ARDS on long-term outcomes. Methods This was a secondary analysis of the...
Article
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Whether severe COVID-19 is by itself a significant risk factor for the development of candidemia currently remains an open question as conflicting results have been published. We aim to assess the occurrence of candidemia in patients with severe COVID-19 admitted to the intensive care unit (ICU). We conducted a retrospective study on patients with...
Article
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Preclinical studies have shown that volatile anesthetics may have beneficial effects on injured lungs, and pilot clinical data support improved arterial oxygenation, attenuated inflammation, and decreased lung epithelial injury in patients with acute respiratory distress syndrome (ARDS) receiving inhaled sevoflurane compared to intravenous midazola...
Article
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With the COVID-19 pandemic, documenting whether health care workers (HCWs) are at increased risk of SARS-CoV-2 contamination and identifying risk factors is of major concern. In this multicenter prospective cohort study, HCWs from frontline departments were included in March and April 2020 and followed for 3 months. SARS-CoV-2 serology was performe...
Article
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Background Several continuous monitoring solutions, including wireless wearable sensors, are available or being developed to improve patient surveillance on surgical wards. We designed a survey to understand the current perception and expectations of anaesthesiologists who, as perioperative physicians, are increasingly involved in postoperative car...
Article
Objective We aimed to characterize the evolution of humoral immune response up to one year after SARS-CoV-2 infection in health care workers (HCWs) during the first wave of COVID-19 in Paris. Methods Serum samples from 92 HCWs were tested at month 0 (M0), M6 and M12 after SARS-CoV-2 infection for IgG targeting the nucleocapsid (N), IgG targeting t...
Article
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Background There are limited data to detail the perioperative anesthetic management and the incidence of postoperative respiratory complications among patients requiring an anesthetic procedure while being SARS-CoV-2 positive or suspected. Methods An observational multicenter cohort study was performed including consecutive patients who were SARS-...
Article
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Background Delayed intubation is associated with high mortality. There is a lack of objective criteria to decide the time of intubation. We assessed a recently described combined oxygenation index (ROX index) to predict intubation in immunocompromised patients. The study is a secondary analysis of randomized trials in immunocompromised patients, in...
Article
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Background While aminoglycosides (AG) have been used for decades, debate remains on their optimal dosing strategy. We investigated the international practices of AG usage specifically regarding dosing and therapeutic drug monitoring (TDM) in critically ill patients. We conducted a prospective, multicentre, observational, cohort study in 59 intensiv...
Article
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Background The intensive care unit is increasingly recognized as a stressful environment for healthcare professionals. This context has an impact on the health of these professionals but also on the quality of their personal and professional life. However, there is currently no validated scale to measure specific stressors perceived by healthcare p...
Preprint
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Objective With the COVID-19 pandemic, documenting whether health care workers (HCWs) are at increased risk of SARS-CoV-2 contamination and identifying risk factors is of major concern. Methods In this multicenter prospective cohort study, HCWs from frontline departments were included in March and April 2020 and followed for 3 months. SARS-CoV-2 se...
Article
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Background: The identification of phenotypes based on lung morphology can be helpful to better target mechanical ventilation of individual patients with acute respiratory distress syndrome (ARDS). We aimed to assess the accuracy of lung ultrasound (LUS) methods for classification of lung morphology in critically ill ARDS patients under mechanical v...
Article
Objective The authors aimed to identify risk factors associated with prolonged mechanical ventilation after scheduled cardiac surgery under cardiopulmonary bypass. Design Single center, observational study. Setting Tertiary hospital Participants All adult patients who underwent scheduled cardiac surgery under cardiopulmonary bypass between Janua...
Article
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The plasma soluble receptor for advanced glycation end-products (sRAGE) is a marker of lung epithelial injury with prognostic value when measured at baseline in acute respiratory distress syndrome (ARDS). However, whether changes in plasma sRAGE could inform prognosis in ARDS remains unknown. In this secondary analysis of the Lung Imaging for Venti...
Article
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Background Current intensive care unit (ICU) sedation guidelines recommend strategies using non-benzodiazepine sedatives. This survey was undertaken to explore inhaled ICU sedation practice in France. Methods In this national survey, medical directors of French adult ICUs were contacted by phone or email between July and August 2019. ICU medical d...
Article
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Acute respiratory distress syndrome (ARDS) is a devastating critical illness that can be triggered by a wide range of insults and remains associated with a high mortality of around 40%. The search for targeted treatment for ARDS has been disappointing, possibly due to the enormous heterogeneity within the syndrome. In this perspective from the Euro...
Article
Background: Chest injuries are associated with mortality among patients admitted to the intensive care unit (ICU) and require multimodal pain management strategies, including regional anesthesia (RA). We conducted a survey to determine the current practices of physicians working in ICUs regarding RA for the management of chest trauma in patients w...
Article
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Background: Dipeptidyl peptidase 3 (DPP3) is a cytosolic enzyme involved in the degradation of various cardiovascular and endorphin mediators. High levels of circulating DPP3 (cDPP3) indicate a high risk of organ dysfunction and mortality in cardiogenic shock patients. Methods: The aim was to assess relationships between cDPP3 during the initial...
Article
Points clés Le SARS-CoV-2, responsable de la COVID-19, est un nouveau bêta-coronavirus. Il engendre une réaction inflammatoire intense pouvant aller jusqu’à l’« orage cytokinique », avec des atteintes pulmonaires épithéliales sévères et un tableau de coagulopathie intravasculaire pulmonaire. Le tableau clinique est polymorphe, avec possible survenu...
Article
Riassunto Le complicanze respiratorie postoperatorie (CRPO) sono complicanze frequenti dopo un intervento chirurgico, con un impatto significativo in termini di morbilità, mortalità e costo. Cambiamenti nel sistema respiratorio si verificano non appena viene indotta l’anestesia generale: la funzione muscolare viene alterata, la meccanica respirator...
Article
Resumen Las complicaciones respiratorias postoperatorias (CRPO) son frecuentes después de una cirugía y tienen un impacto significativo en términos de morbilidad, mortalidad y coste. Los cambios en el sistema respiratorio se producen tan pronto como se induce la anestesia general: se altera la función muscular, se modifica la mecánica respiratoria...
Article
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Rationale: Whether severe COVID-19 is a significant risk factor for the development of invasive fungal superinfections is of great medical interest and remains for now an open question. Objectives: We aim to assess the occurrence of invasive fungal respiratory superinfections in patients with severe COVID-19. Methods: We conducted the study on...
Article
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Background: Mucormycosis is an invasive fungal infection, with an increasing incidence especially in patients with hematological malignancies. Its prognosis is poor because of its high invasive power and its intrinsic low susceptibility to antifungal agents. We aimed to describe the epidemiology of mucormycosis in intensive care units (ICU) and ev...
Article
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Acute Respiratory Distress Syndrome (ARDS) is one of the most demanding conditions in an Intensive Care Unit (ICU). Management of analgesia and sedation in ARDS is particularly challenging. An expert panel was convened to produce a “state-of-the-art” article to support clinicians in the optimal management of analgesia/sedation in mechanically venti...
Article
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Background There is wide variability between intensivists in the decisions to forgo life-sustaining treatment (DFLST). Advance directives (ADs) allow patients to communicate their end-of-life wishes to physicians. We assessed whether ADs reduced variability in DFLSTs between intensivists. Methods We conducted a multicenter, prospective, simulation...
Article
Although the acute respiratory distress syndrome (ARDS) is well defined by the development of acute hypoxemia, bilateral infiltrates and non-cardiogenic pulmonary edema, ARDS is heterogeneous in terms of clinical risk factors, physiology of lung injury, microbiology, and biology, potentially explaining why pharmacologic therapies have been mostly u...
Article
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Background Sigh is a cyclic brief recruitment manoeuvre: previous physiological studies showed that its use could be an interesting addition to pressure support ventilation to improve lung elastance, decrease regional heterogeneity and increase release of surfactant. Research Question Is the clinical application of sigh during pressure support ven...
Preprint
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Introduction Recently, fluid collected from the heat-and-moisture-exchange filters, which are commonly used in most mechanically ventilated patients under intravenous sedation, has been reported as a potential surrogate for fluid in the distal airspace. Therefore, collection of this fluid represents a promising, non-invasive method for sampling the...
Article
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Background: Whereas 5415 Intensive Care Unit (ICU) beds were initially available, 7148 COVID-19 patients were hospitalised in the ICU at the peak of the outbreak. The present study reports how the French Health Care system created temporary ICU beds to avoid being overwhelmed. Methods: All French ICUs were contacted for answering a questionnaire...
Article
Background: We determined whether an audit on the adherence to guidelines for hospital-acquired pneumonia (HAP) for can improve the outcomes of patients in intensive care units (ICUs). Methods: This study was conducted at 35 ICUs in 30 hospitals. We included consecutive adult patients hospitalized in ICUs for three days or more. After a three-mo...
Article
Acute respiratory distress syndrome (ARDS) is a common cause of hypoxemic respiratory failure and death in critically ill patients, and there is an urgent need to find effective therapies. Preclinical studies have shown that inhaled halogenated agents may have beneficial effects in animal models of ARDS. The development of new devices to administer...
Article
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Purpose To survey haemodynamic monitoring and management practices in ICU patients with the coronavirus disease 2019 (COVID-19). Methods A questionnaire was shared on social networks or via email by the authors and by Anaesthesia and/or Critical Care societies from France, Switzerland, Belgium, Brazil, and Portugal. Intensivists and anaesthetists...
Article
Background: Existing algorithms do not allow for setting up finely tuned progression or intensity for exercise training in intensive care units (ICUs). Aim: We aimed to assess the feasibility and tolerance of a very early exercise program tailored by using decisional algorithm that integrated both progression and intensity. Design: Open-label...
Article
Extracerebral complications, especially pulmonary and cardiovascular, are frequent in brain-injured patients and are major determinants of the outcome. Two major pathways have been described: brain-lung and brain-heart interactions. Lung injuries after acute brain damages include ventilator-associated pneumonia (VAP), acute respiratory distress syn...
Article
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Background The Radiographic Assessment of Lung Edema (RALE) score has been proposed to assess the severity of acute respiratory distress syndrome (ARDS) and treatments targeted at reducing pulmonary edema such as conservative fluid management cause a reduction in RALE score over time. Research question We assessed whether early changes in RALE sco...
Article
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The first wave of the SARS-CoV-2 pandemic required an unprecedented and historic increase in critical care capacity on a global scale in France. Authors and members from the ACUTE and REANIMATION committees of the French Society of Anaesthesiology and Critical Care (SFAR) wished to share experience and insights gained during the first weeks of this...
Article
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Background: Subphenotypes were recently reported within clinical acute respiratory distress syndrome (ARDS), with distinct outcomes and therapeutic responses. Experimental models have long been used to mimic features of ARDS pathophysiology, but the presence of distinct subphenotypes among preclinical ARDS remains unknown. This review will investi...
Article
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: Hypoxaemia is a potential life-threatening yet common complication in the peri-operative and periprocedural patient (e.g. during an invasive procedure with risk of deterioration of gas exchange, such as bronchoscopy). The European Society of Anaesthesiology (ESA) and the European Society of Intensive Care Medicine (ESICM) have developed guideline...
Article
Background: Volatile anaesthetic agents, especially sevoflurane, could be an alternative for sedating ICU patients. In the operating theatre, volatile anaesthetic agents are monitored using minimal alveolar concentration (MAC). In ICU, MAC may be used to assess sedation level and may replace clinical scale especially when they are unusable. Theref...
Article
Re-epithelialization of the alveolar surface is a key process of lung alveolar epithelial barrier repair after acute lung injury. The receptor for advanced glycation end-products (RAGE) pathway plays key roles in lung homeostasis, and its involvement in wound repair has been already reported in human bronchial epithelial cells. However, its effects...
Article
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Purpose: We used a human corneal epithelial cell (HCE) line to determine the involvement of the advanced glycation end products (AGEs) / receptor for AGEs (RAGE) couple in corneal epithelium wound healing. Methods: After wounding, HCE cells were exposed to two major RAGE ligands (HMGB1 and AGEs), and wound healing was evaluated using the in vitr...
Article
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Background: In patients with acute respiratory distress syndrome (ARDS), the National Heart, Lung, and Blood Institute ARDS Clinical Trials Network recommends a target partial pressure of arterial oxygen (Pao2) between 55 and 80 mm Hg. Prospective validation of this range in patients with ARDS is lacking. We hypothesized that targeting the lower l...
Article
Full-text available
Hypoxaemia is a potential life-threatening yet common complication in the peri-operative and periprocedural patient (e.g. during an invasive procedure at risk of deterioration of gas exchange, such as bronchoscopy). The European Society of Anaesthesiology (ESA) and the European Society of Intensive Care Medicine (ESICM) developed guidelines for the...
Conference Paper
Full-text available
Rationale: The intensive care units (ICU) are fertile ground for the emergence of professional stressors. Assessed by individuals as situations that weaken or are beyond their resources, work-related stressors impact the mental and physical health of workers and the quality and safety of care. Currently, many tools are used to assess caregiver stre...
Article
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Background: Lung ultrasound is increasingly used in critically ill patients as an alternative to bedside chest radiography, but the best training method remains uncertain. This study describes a training curriculum allowing trainees to acquire basic competence. Methods: This multicenter, prospective, and educational study was conducted in 10 Int...
Article
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Intubation and extubation of ventilated patients are not risk-free procedures in the intensive care unit (ICU) and can be associated with morbidity and mortality. Intubation in the ICU is frequently required in emergency situations for patients with an unstable cardiovascular or respiratory system. Under these circumstances, it is a high-risk proce...