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1. Central venous-to-arterial PCO2 difference as a marker to identify fluid responsiveness in septic shock

Author

Boulos Nassar, Mohamed Badr, Nicolas Van Grunderbeeck, Johanna Temime, Florent Pepy, Gaelle Gasan, Laurent Tronchon, Didier Thevenin, and Jihad Mallat

Subjects
Medicine, Science
Abstract

Abstract Defining the hemodynamic response to volume therapy is integral to managing critically ill patients with acute circulatory failure, especially in the absence of cardiac index (CI) measurement. This study aimed at investigating whether changes in central venous-to-arterial CO2 difference (Δ-ΔPCO2) and central venous oxygen saturation (ΔScvO2) induced by volume expansion (VE) are reliable parameters to define fluid responsiveness in sedated and mechanically ventilated septic patients. We prospectively studied 49 critically ill septic patients in whom VE was indicated because of circulatory failure and clinical indices. CI, ΔPCO2, ScvO2, and oxygen consumption (VO2) were measured before and after VE. Responders were defined as patients with a > 10% increase in CI (transpulmonary thermodilution) after VE. We calculated areas under the receiver operating characteristic curves (AUCs) for Δ-ΔPCO2, ΔScvO2, and changes in CI (ΔCI) after VE in the whole population and in the subgroup of patients with an increase in VO2 (ΔVO2) ≤ 10% after VE (oxygen-supply independency). Twenty-five patients were fluid responders. In the whole population, Δ-ΔPCO2 and ΔScvO2 were significantly correlated with ΔCI after VE (r = − 0.30, p = 0.03 and r = 0.42, p = 0.003, respectively). The AUCs for Δ-ΔPCO2 and ΔScvO2 to define fluid responsiveness (increase in CI > 10% after VE) were 0.76 (p

Published
2021
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2. Mental health and stress among ICU healthcare professionals in France according to intensity of the COVID-19 epidemic

Author

Alexandra Laurent, Alicia Fournier, Florent Lheureux, Guillaume Louis, Saad Nseir, Gwenaelle Jacq, Cyril Goulenok, Grégoire Muller, Julio Badie, Bélaïd Bouhemad, Marjolaine Georges, Paul-Michel Mertes, Hamid Merdji, Vincent Castelain, Caroline Abdulmalak, Olivier Lesieur, Gaëtan Plantefeve, Jean-Claude Lacherade, Jean-Philippe Rigaud, Nicholas Sedillot, Damien Roux, Nicolas Terzi, Pascal Beuret, Antoine Monsel, Anne-Laure Poujol, Khaldoun Kuteifan, Thierry Vanderlinden, Anne Renault, Bérengère Vivet, Christophe Vinsonneau, Saber Davide Barbar, Gilles Capellier, Jean Dellamonica, Stephan Ehrmann, Thomas Rimmelé, Julien Bohé, Pierre Bouju, Sébastien Gibot, Bruno Lévy, Johanna Temime, Cyrille Pichot, David Schnell, Diane Friedman, Pierre Asfar, Eddy Lebas, Philippe Mateu, Kada Klouche, Juliette Audibert, Fiona Ecarnot, Nicolas Meunier-Beillard, Mélanie Loiseau, Irène François-Pursell, Christine Binquet, Jean-Pierre Quenot, and PsyCOVID-ICU Trial Investigators and the CRICS TRIGGERSEP Group (Clinical Research in Intensive Care and Sepsis Trial Group for Global Evaluation and Research in Sepsis)

Subjects
Mental health, Stress factors, ICU, Healthcare professionals, COVID-19, Medical emergencies. Critical care. Intensive care. First aid, RC86-88.9
Abstract

Abstract Background We investigated the impact of the COVID-19 crisis on mental health of professionals working in the intensive care unit (ICU) according to the intensity of the epidemic in France. Methods This cross-sectional survey was conducted in 77 French hospitals from April 22 to May 13 2020. All ICU frontline healthcare workers were eligible. The primary endpoint was the mental health, assessed using the 12-item General Health Questionnaire. Sources of stress during the crisis were assessed using the Perceived Stressors in Intensive Care Units (PS-ICU) scale. Epidemic intensity was defined as high or low for each region based on publicly available data from Santé Publique France. Effects were assessed using linear mixed models, moderation and mediation analyses. Results In total, 2643 health professionals participated; 64.36% in high-intensity zones. Professionals in areas with greater epidemic intensity were at higher risk of mental health issues (p

Published
2021
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3. Determinants of noninvasive ventilation success or failure in morbidly obese patients in acute respiratory failure.

Author

Malcolm Lemyze, Pauline Taufour, Alain Duhamel, Johanna Temime, Olivier Nigeon, Nicolas Vangrunderbeeck, Stéphanie Barrailler, Gaëlle Gasan, Florent Pepy, Didier Thevenin, and Jihad Mallat

Subjects
Medicine, Science
Abstract

PurposeAcute respiratory failure (ARF) is a common life-threatening complication in morbidly obese patients with obesity hypoventilation syndrome (OHS). We aimed to identify the determinants of noninvasive ventilation (NIV) success or failure for this indication.MethodsWe prospectively included 76 consecutive patients with BMI>40 kg/m2 diagnosed with OHS and treated by NIV for ARF in a 15-bed ICU of a tertiary hospital.ResultsNIV failed to reverse ARF in only 13 patients. Factors associated with NIV failure included pneumonia (n = 12/13, 92% vs n = 9/63, 14%; pConclusionsMultiple organ failure and pneumonia were the main factors associated with NIV failure and death in morbidly obese patients in hypoxemic ARF. On the opposite, NIV was constantly successful and could be safely pushed further in case of severe hypercapnic acute respiratory decompensation of OHS.

Published
2014
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4. To Relieve the Patient's Thirst, Refresh the Mouth First: A Pilot Study Using Mini Mint Ice Cubes in Severely Dehydrated Patients

Author

Malcolm Lemyze, Johann Lavoisier, Johanna Temime, Maxime Granier, and Jihad Mallat

Subjects
Mouth, business.industry, Ice, Pilot Projects, medicine.disease, Thirst, Anesthesiology and Pain Medicine, Anesthesia, Critical illness, medicine, Humans, Neurology (clinical), Hypernatremia, medicine.symptom, business, General Nursing, Mentha
Published
2020
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5. Central venous-to-arterial PCO2 difference as a marker to identify fluid responsiveness in septic shock

Author

Gaëlle Gasan, Nicolas Van Grunderbeeck, Johanna Temime, Boulos Nassar, Didier Thevenin, Mohamed Badr, Jihad Mallat, Florent Pepy, and Laurent Tronchon

Subjects
Male, medicine.medical_specialty, Haemodynamic response, Science, Critical Illness, Partial Pressure, Fluid responsiveness, Population, Cardiac index, CIRCULATORY FAILURE, Article, Veins, Medical research, Oxygen Consumption, Internal medicine, Outcome Assessment, Health Care, medicine, Arterial pCO2, Humans, Prospective Studies, education, Aged, education.field_of_study, Multidisciplinary, Receiver operating characteristic, business.industry, Septic shock, Hemodynamics, Arteries, Translational research, Carbon Dioxide, Middle Aged, medicine.disease, Shock, Septic, Cardiology, Medicine, Fluid Therapy, Female, business, Biomarkers
Abstract

Defining the hemodynamic response to volume therapy is integral to managing critically ill patients with acute circulatory failure, especially in the absence of cardiac index (CI) measurement. This study aimed at investigating whether changes in central venous-to-arterial CO2 difference (Δ-ΔPCO2) and central venous oxygen saturation (ΔScvO2) induced by volume expansion (VE) are reliable parameters to define fluid responsiveness in sedated and mechanically ventilated septic patients. We prospectively studied 49 critically ill septic patients in whom VE was indicated because of circulatory failure and clinical indices. CI, ΔPCO2, ScvO2, and oxygen consumption (VO2) were measured before and after VE. Responders were defined as patients with a > 10% increase in CI (transpulmonary thermodilution) after VE. We calculated areas under the receiver operating characteristic curves (AUCs) for Δ-ΔPCO2, ΔScvO2, and changes in CI (ΔCI) after VE in the whole population and in the subgroup of patients with an increase in VO2 (ΔVO2) ≤ 10% after VE (oxygen-supply independency). Twenty-five patients were fluid responders. In the whole population, Δ-ΔPCO2 and ΔScvO2 were significantly correlated with ΔCI after VE (r = − 0.30, p = 0.03 and r = 0.42, p = 0.003, respectively). The AUCs for Δ-ΔPCO2 and ΔScvO2 to define fluid responsiveness (increase in CI > 10% after VE) were 0.76 (p p = 0.02), respectively. In patients with ΔVO2 ≤ 10% (n = 36) after VE, the correlation between ΔScvO2 and ΔCI was 0.62 (p 2 and ΔCI was − 0.47 (p = 0.004). The AUCs for Δ-ΔPCO2 and ΔScvO2 were 0.83 (p p = 0.006), respectively. In these patients, Δ-ΔPCO2 ≤ -37.5% after VE allowed the categorization between responders and non-responders with a positive predictive value of 100% and a negative predictive value of 60%. In sedated and mechanically ventilated septic patients with no signs of tissue hypoxia (oxygen-supply independency), Δ-ΔPCO2 is a reliable parameter to define fluid responsiveness.

Published
2021

6. Mental health and stress among ICU healthcare professionals in France according to intensity of the COVID-19 epidemic

Author

Gaëtan Plantefève, Pascal Beuret, Khaldoun Kuteifan, Olivier Lesieur, Saad Nseir, Nicholas Sedillot, Kada Klouche, Vincent Castelain, Cyrille Pichot, Jean-Claude Lacherade, Jean Dellamonica, Nicolas Meunier-Beillard, Florent Lheureux, Fiona Ecarnot, Bérengère Vivet, Pierre Bouju, Gilles Capellier, Grégoire Muller, Paul Michel Mertes, Nicolas Terzi, Eddy Lebas, Sébastien Gibot, PsyCOVID-ICU Trial Investigators, Jean-Philippe Rigaud, Diane Friedman, Julio Badie, Jean-Pierre Quenot, Pierre Asfar, Cyril Goulenok, Anne Renault, Anne-Laure Poujol, Irène François-Pursell, Philippe Mateu, David Schnell, Marjolaine Georges, Antoine Monsel, Belaid Bouhemad, Johanna Temime, Hamid Merdji, Christophe Vinsonneau, Thierry Vanderlinden, Alexandra Laurent, Mélanie Loiseau, Juliette Audibert, Alicia Fournier, Caroline Abdulmalak, Christine Binquet, Gwenaëlle Jacq, Stephan Ehrmann, Damien Roux, Bruno Levy, Saber Barbar, Julien Bohé, Guillaume Louis, Thomas Rimmelé, Laboratoire de psychologie : dynamiques relationnelles et processus identitaires [Dijon] (PSY-DREPI), Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), UFR des Sciences de Santé (Université de Bourgogne), Université de Bourgogne (UB), Centre hospitalier régional Metz-Thionville (CHR Metz-Thionville), CHU Lille, Service de réanimation [CH Versailles], Centre Hospitalier de Versailles André Mignot (CHV), Ramsay Générale de Santé - Hôpital Privé La Louvière, Centre Hospitalier Régional d'Orléans (CHRO), Hôpital Nord Franche-Comté [Hôpital de Trévenans] (HNFC), Service d'anesthésie - réanimation chirurgicale [CHU de Dijon], Service de Pneumologie Soins Intensifs, Appareillage Respiratoire [CHU de Dijon], Les Hôpitaux Universitaires de Strasbourg (HUS), Université de Strasbourg (UNISTRA), Nouvel Hôpital Civil de Strasbourg, Hôpital de Hautepierre [Strasbourg], Fédération de Médecine Translationnelle de Strasbourg (FMTS), Centre Hospitalier Chalon-sur-Saône William Morey, Centre Hospitalier de La Rochelle (CHR), Service de réanimation (CH d'Argenteuil), Centre Hospitalier Victor Dupouy, Centre Hospitalier Départemental - Hôpital de La Roche-sur-Yon (CHD Vendée), Service de Médecine Intensive Réanimation (CH Dieppe), Centre hospitalier de Dieppe, Espace régional de réflexion éthique de Normandie (EREN), Centre hospitalier de Bourg-en-Bresse / Fleyriat (CHBBF), Service des soins intensifs [Hôpital Louis Mourier], Hôpital Louis Mourier - AP-HP [Colombes], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Infection, Anti-microbiens, Modélisation, Evolution (IAME (UMR_S_1137 / U1137)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC)-Université Sorbonne Paris Nord, Service de Réanimation Médicale [Grenoble], CHU Grenoble-Hôpital Michallon, Centre Hospitalier de Roanne, Service d'Anesthésie réanimation [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Immunologie - Immunopathologie - Immunothérapie [CHU Pitié Salpêtrière] (I3), CHU Charles Foix [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre d'investigation clinique Biothérapie [CHU Pitié-Salpêtrière] (CIC-BTi), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Departement Hospitalo- Universitaire - Inflammation, Immunopathologie, Biothérapie [Paris] (DHU - I2B), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Adaptation, mesure et évaluation en santé. Approches interdisciplinaires (APEMAC), Université de Lorraine (UL), École de Psychologues Praticiens (EPP), Groupe hospitalier de la région de Mulhouse et Sud-Alsace, Groupe Hospitalier de l'Institut Catholique de Lille (GHICL), Université catholique de Lille (UCL), CHRU Brest - Département d'Anesthésie Réanimation (CHU - BREST - DAR), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Groupe Hospitalier de La Haute-Saône, Centre Hospitalier de Béthune (CH Béthune), GHT de l'Artois, Unité de réanimation médicale [CHU de Carémeau, Nîmes], Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Marqueurs pronostiques et facteurs de régulations des pathologies cardiaques et vasculaires - UFC ( UR 3920) (PCVP / CARDIO), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre Hospitalier Universitaire de Nice (CHU Nice), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Centre d’Investigation Clinique [Tours] CIC 1415 (CIC ), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau-Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Pathologies Respiratoires : Protéolyse et Aérosolthérapie, Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Edouard Herriot [CHU - HCL], Hospices Civils de Lyon (HCL), Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Groupe Hospitalier Bretagne Sud (GHBS), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Défaillance Cardiovasculaire Aiguë et Chronique (DCAC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Institut Lorrain du Coeur et des Vaisseaux Louis Mathieu [Nancy], Centre Hospitalier de Lens, Centre Hospitalier Louis Pasteur [Dole], Centre Hospitalier d'Angoulême (CH Angoulême), Hôpital Raymond Poincaré [AP-HP], CHU d'Angers [Département Urgences], Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Centre Hospitalier de Charleville-Mezières, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Service de Réanimation polyvalente [Chartres], Hôpital Louis Pasteur [Chartres], Service de cardiologie [CHRU de Besançon], Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), Délégation à la recherche clinique et à l'innovation [CHU Dijon] (DRCI), Service de médecine légale (Institut médico-légal et Unité médico-judiciaire) (CHU de Dijon), Cellule d'urgence médico-psychologique (CUMP), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Laboratoire d'Excellence : Lipoprotéines et Santé : prévention et Traitement des maladies Inflammatoires et du Cancer (LabEx LipSTIC), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut Gustave Roussy (IGR)-Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER-UNICANCER-Institut National de la Santé et de la Recherche Médicale (INSERM)-Fédération Francophone de la Cancérologie Digestive, FFCD-Université de Montpellier (UM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS [Bourgogne-Franche-Comté])-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Espace de Réflexion Éthique Bourgogne Franche-Comté (EREBFC) (EREBFC)

Subjects
Mediation (statistics), [SDV]Life Sciences [q-bio], Context (language use), Critical Care and Intensive Care Medicine, law.invention, [SHS]Humanities and Social Sciences, 03 medical and health sciences, 0302 clinical medicine, law, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Environmental health, Intensive care, Healthcare professionals, Health care, Medicine, 030212 general & internal medicine, business.industry, RC86-88.9, Research, Stressor, COVID-19, Medical emergencies. Critical care. Intensive care. First aid, Intensive care unit, Mental health, 3. Good health, ICU, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], General Health Questionnaire, business, Stress factors, 030217 neurology & neurosurgery
Abstract

Background We investigated the impact of the COVID-19 crisis on mental health of professionals working in the intensive care unit (ICU) according to the intensity of the epidemic in France. Methods This cross-sectional survey was conducted in 77 French hospitals from April 22 to May 13 2020. All ICU frontline healthcare workers were eligible. The primary endpoint was the mental health, assessed using the 12-item General Health Questionnaire. Sources of stress during the crisis were assessed using the Perceived Stressors in Intensive Care Units (PS-ICU) scale. Epidemic intensity was defined as high or low for each region based on publicly available data from Santé Publique France. Effects were assessed using linear mixed models, moderation and mediation analyses. Results In total, 2643 health professionals participated; 64.36% in high-intensity zones. Professionals in areas with greater epidemic intensity were at higher risk of mental health issues (p p B = 0.13; 95% confidence interval [CI] = 0.08–0.17), having a relative at risk of COVID-19 (B = 0.14; 95%-CI = 0.09–0.18) and working in high-intensity zones (B = 0.11; 95%-CI = 0.02–0.20). Perceived stress mediated the impact of the crisis context on mental health (B = 0.23, 95%-CI = 0.05, 0.41) and the impact of stress on mental health was moderated by positive thinking, b = − 0.32, 95% CI = − 0.54, − 0.11. Conclusion COVID-19 negatively impacted the mental health of ICU professionals. Professionals working in zones where the epidemic was of high intensity were significantly more affected, with higher levels of perceived stress. This study is supported by a grant from the French Ministry of Health (PHRC-COVID 2020).

Published
2021
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7. Decrease in pulse pressure and stroke volume variations after mini-fluid challenge accurately predicts fluid responsiveness

Author

Jihad Mallat, Malcolm Lemyze, Florent Pepy, E. Durville, Mehdi Meddour, Laurent Tronchon, Didier Thevenin, Benoît Tavernier, Johanna Temime, and Nicolas Vangrunderbeeck

Subjects
Adult, Male, Cardiac output, Critical Illness, medicine.medical_treatment, Cardiac index, Hemodynamics, Blood Pressure, Tidal Volume, medicine, Humans, Prospective Studies, Cardiac Output, Tidal volume, Aged, Mechanical ventilation, business.industry, Reproducibility of Results, Stroke Volume, Stroke volume, Middle Aged, Respiration, Artificial, Pulse pressure, Anesthesiology and Pain Medicine, ROC Curve, Area Under Curve, Anesthesia, Shock (circulatory), Fluid Therapy, Female, medicine.symptom, business
Abstract

Dynamic indices, such as pulse pressure variation (PPV), are inaccurate predictors of fluid responsiveness in mechanically ventilated patients with low tidal volume. This study aimed to test whether changes in continuous cardiac index (CCI), PPV, and stroke volume variation (SVV) after a mini-fluid challenge (100 ml of fluid during 1 min) could predict fluid responsiveness in these patients.We prospectively studied 49 critically ill, deeply sedated, and mechanically ventilated patients (tidal volume8 ml kg(-1) of ideal body weight) without cardiac arrhythmias, in whom a fluid challenge was indicated because of circulatory failure. The CCI, SVV (PiCCO™; Pulsion), and PPV (MP70™; Philips) were measured before and after 100 ml of colloid infusion during 1 min, and then after the additional infusion of 400 ml during 14 min. Responders were defined as subjects with a ≥15% increase in cardiac index (transpulmonary thermodilution) after the full (500 ml) fluid challenge. Areas under the receiver operating characteristic curves (AUCs) and the grey zones were determined for changes in CCI (ΔCCI100), SVV (ΔSVV100), and PPV (ΔPPV100) after 100 ml fluid challenge.Twenty-two subjects were responders. The ΔCCI100 predicted fluid responsiveness with an AUC of 0.78. The grey zone was large and included 67% of subjects. The ΔSVV100 and ΔPPV100 predicted fluid responsiveness with AUCs of 0.91 and 0.92, respectively. Grey zones were small, including ≤12% of subjects for both indices.The ΔSVV100 and ΔPPV100 predict fluid responsiveness accurately and better than ΔCCI100 (PiCCO™; Pulsion) in patients with circulatory failure and ventilated with low volumes.

Published
2015
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8. Ratios of central venous-to-arterial carbon dioxide content or tension to arteriovenous oxygen content are better markers of global anaerobic metabolism than lactate in septic shock patients

Author

Florent Pepy, Gaëlle Gasan, Didier Thevenin, Nicolas Vangrunderbeeck, Stéphanie Barrailler, Mehdi Meddour, Laurent Tronchon, Johanna Temime, Emmanuelle Durville, Jihad Mallat, Benoit Vallet, and Malcolm Lemyze

Subjects
medicine.medical_specialty, Cardiac index, chemistry.chemical_element, Oxygen consumption, Anaerobic metabolism, Critical Care and Intensive Care Medicine, Oxygen, 03 medical and health sciences, 0302 clinical medicine, Venous oxygen saturation, Internal medicine, Septic shock, Medicine, Tissue hypoxia, Acute circulatory failure, Oxygen content, Receiver operating characteristic, business.industry, 030208 emergency & critical care medicine, medicine.disease, Surgery, Venous-to-arterial carbon dioxide difference, 030228 respiratory system, chemistry, Cardiology, Lactate, business, human activities, Anaerobic exercise, circulatory and respiratory physiology, Research Article
Abstract

Background To evaluate the ability of the central venous-to-arterial CO2 content and tension differences to arteriovenous oxygen content difference ratios (∆ContCO2/∆ContO2 and ∆PCO2/∆ContO2, respectively), blood lactate concentration, and central venous oxygen saturation (ScvO2) to detect the presence of global anaerobic metabolism through the increase in oxygen consumption (VO2) after an acute increase in oxygen supply (DO2) induced by volume expansion (VO2/DO2 dependence). Methods We prospectively studied 98 critically ill mechanically ventilated patients in whom a fluid challenge was decided due to acute circulatory failure related to septic shock. Before and after volume expansion (500 mL of colloid solution), we measured cardiac index, VO2, DO2, ∆ContCO2/∆ContO2 and ∆PCO2/∆ContO2 ratios, lactate, and ScvO2. Fluid-responders were defined as a ≥15 % increase in cardiac index. Areas under the receiver operating characteristic curves (AUC) were determined for these variables. Results Fifty-one patients were fluid-responders (52 %). DO2 increased significantly (31 ± 12 %) in these patients. An increase in VO2 ≥ 15 % (“VO2-responders”) concurrently occurred in 57 % of the 51 fluid-responders (45 ± 16 %). Compared with VO2-non-responders, VO2-responders were characterized by higher lactate levels and higher ∆ContCO2/∆ContO2 and ∆PCO2/∆ContO2 ratios. At baseline, lactate predicted a fluid-induced increase in VO2 ≥ 15 % with AUC of 0.745. Baseline ∆ContCO2/∆ContO2 and ∆PCO2/∆ContO2 ratios predicted an increase of VO2 ≥ 15 % with AUCs of 0.965 and 0.962, respectively. Baseline ScvO2 was not able to predict an increase of VO2 ≥ 15 % (AUC = 0.624). Conclusions ∆ContCO2/∆ContO2 and ∆PCO2/∆ContO2 ratios are more reliable markers of global anaerobic metabolism than lactate. ScvO2 failed to predict the presence of global tissue hypoxia. Electronic supplementary material The online version of this article (doi:10.1186/s13613-016-0110-3) contains supplementary material, which is available to authorized users.

Published
2015

9. Fulminant invasive tracheobronchial aspergillosis

Author

Malcolm Lemyze, Santiago Gimenez, Johanna Temime, Nicolas Van Grunderbeeck, and Jihad Mallat

Subjects
Pulmonary and Respiratory Medicine, Invasive Pulmonary Aspergillosis, Male, Pathology, medicine.medical_specialty, Mucous Membrane, business.industry, Fulminant, Bronchi, Comorbidity, Middle Aged, Critical Care and Intensive Care Medicine, Aspergillosis, medicine.disease, Legionella pneumophila, Diabetes Complications, Pulmonary Disease, Chronic Obstructive, Treatment Outcome, Adrenal Cortex Hormones, Bronchoscopy, medicine, Pneumonia, Bacterial, Humans, business
Published
2015

10. Repeatability of Blood Gas Parameters, Pco2 Gap, and Pco2 Gap to Arterial-to-Venous Oxygen Content Difference in Critically Ill Adult Patients

Author

Ali Lazkani, Gaëlle Gasan, Jihad Mallat, Didier Thevenin, Johanna Temime, Florent Pepy, Mehdi Meddour, Laurent Tronchon, Nicolas Vangrunderbeeck, and Malcolm Lemyze

Subjects
Male, medicine.medical_specialty, Time Factors, Critical Illness, Observational Study, pCO2, Article, chemistry.chemical_compound, Internal medicine, medicine, Humans, Prospective Studies, Oxygen content, Aged, Adult patients, Critically ill, business.industry, Reproducibility of Results, Arterial carbon dioxide tension, General Medicine, Venous blood, Repeatability, Carbon Dioxide, Middle Aged, Surgery, Oxygen, Intensive Care Units, chemistry, Carbon dioxide, Cardiology, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Female, Blood Gas Analysis, business
Abstract

Supplemental Digital Content is available in the text, The objective of this study was to examine the repeatability of blood gas (BG) parameters and their derived variables such as the central venous-to-arterial carbon dioxide tension difference (▵Pco2) and the ratio of ▵Pco2 over the central arteriovenous oxygen content difference (▵Pco2/C(a-cv)O2) and to determine the smallest detectable changes in individual patients. A total of 192 patients with arterial and central venous catheters were included prospectively. Two subsequent arterial and central venous blood samples were collected immediately one after the other and analyzed using the same point-of-care BG analyzer. The samples were analyzed for arterial and venous BG parameters, ▵Pco2, and ▵Pco2/C(a-cv)O2 ratio. Repeatability was expressed as the smallest detectable difference (SDD) and the least significant change (LSC). A change in value of these parameters exceeding the SDD or the LSC should be regarded as real. The SDDs for arterial carbon dioxide tension, arterial oxygen saturation, central venous oxygen saturation (ScvO2), and ▵Pco2 were small: ±2.06 mm Hg, ±1.23%, 2.92%, and ±1.98 mm Hg, respectively, whereas the SDDs for arterial oxygen tension (Pao2) and ▵Pco2/C(a-cv)O2 were high: ±9.09 mm Hg and ±0.57 mm Hg/mL, respectively. The LSCs (%) for these variables were 5.06, 1.27, 4.44, 32.4, 9.51, and 38.5, respectively. The repeatability of all these variables was good except for Pao2 and ▵Pco2/C(a-cv)O2 ratio for which we observed an important inherent variability. Expressed as SDD, a ScvO2 change value of at least ±3% should be considered as true. The clinician must be aware that an apparent change in these variables in an individual patient might represent only an inherent variation.

Published
2015

11. Impact of fiber-optic laryngoscopy on the weaning process from mechanical ventilation in high-risk patients for postextubation stridor

Author

Didier Thevenin, Johanna Temime, Stéphanie Barailler, Jihad Mallat, Marie Jonard, Emmanuelle Durville, Mehdi Meddour, and Malcolm Lemyze

Subjects
Male, Leak, medicine.medical_specialty, Critical Illness, medicine.medical_treatment, Stridor, Laryngoscopy, Observational Study, Pilot Projects, mechanical ventilation, Spontaneous breathing trial, 03 medical and health sciences, 0302 clinical medicine, Clinical Protocols, Adrenal Cortex Hormones, medicine, Fiber Optic Technology, Humans, Weaning, Prospective Studies, Aged, intensive care, Mechanical ventilation, medicine.diagnostic_test, business.industry, 030208 emergency & critical care medicine, General Medicine, Middle Aged, Respiration, Artificial, laryngeal injury, stridor, Surgery, 030228 respiratory system, Respiratory failure, Anesthesia, Cuff, Female, medicine.symptom, business, Ventilator Weaning, Research Article
Abstract

The objective of this study was to assess the impact of fiber-optic laryngoscopy (FOL) on the weaning process from mechanical ventilation in critically ill patients with a positive cuff leak test (CLT) as compared with the current recommended strategy based on corticosteroids. In this prospective observational pilot study conducted over a 1-year period in a 15-bed ICU, CLT was systematically performed before extubation in all intubated patients having passed a spontaneous breathing trial (SBT). After the endotracheal tube cuff was deflated, cuff leak volume (CLVol) was assessed during assisted controlled ventilation. When CLT was positive (CLVol

Published
2017
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12. Determinants of Noninvasive Ventilation Success or Failure in Morbidly Obese Patients in Acute Respiratory Failure

Author

Gaëlle Gasan, Pauline Taufour, Didier Thevenin, Johanna Temime, Florent Pepy, Malcolm Lemyze, Olivier Nigeon, Stéphanie Barrailler, Alain Duhamel, Jihad Mallat, and Nicolas Vangrunderbeeck

Subjects
Male, Critical Care and Emergency Medicine, Pulmonology, Physiology, medicine.medical_treatment, Obesity Hypoventilation Syndrome, Medicine and Health Sciences, Intubation, Prospective Studies, Treatment Failure, Prospective cohort study, Obesity hypoventilation syndrome, Multidisciplinary, Ventilatory Support, Middle Aged, Obesity, Morbid, Physiological Parameters, Research Design, Physical Sciences, Observational Studies, Medicine, Female, Noninvasive ventilation, Respiratory Insufficiency, Statistics (Mathematics), Research Article, medicine.medical_specialty, Clinical Research Design, Science, Biostatistics, Morbidly obese, Research and Analysis Methods, Respiratory Failure, medicine, Humans, Obesity, Intensive care medicine, Nutrition, Aged, Noninvasive Ventilation, business.industry, Body Weight, Biology and Life Sciences, medicine.disease, Pneumonia, business, Complication, Body mass index, Mathematics
Abstract

PurposeAcute respiratory failure (ARF) is a common life-threatening complication in morbidly obese patients with obesity hypoventilation syndrome (OHS). We aimed to identify the determinants of noninvasive ventilation (NIV) success or failure for this indication.MethodsWe prospectively included 76 consecutive patients with BMI>40 kg/m2 diagnosed with OHS and treated by NIV for ARF in a 15-bed ICU of a tertiary hospital.ResultsNIV failed to reverse ARF in only 13 patients. Factors associated with NIV failure included pneumonia (n = 12/13, 92% vs n = 9/63, 14%; pConclusionsMultiple organ failure and pneumonia were the main factors associated with NIV failure and death in morbidly obese patients in hypoxemic ARF. On the opposite, NIV was constantly successful and could be safely pushed further in case of severe hypercapnic acute respiratory decompensation of OHS.

Published
2014
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13. Acute hyperventilation increases the central venous-to-arterial PCO2 difference in stable septic shock patients

Author

Nicolas Vangrunderbeeck, Gaëlle Gasan, Florent Pepy, Malcolm Lemyze, Didier Thevenin, Johanna Temime, Marie Jonard, Jihad Mallat, Stéphanie Barrailler, Usman Mohammad, Mehdi Meddour, and Laurent Tronchon

Subjects
Respiratory rate, Acute hyperventilation, Cardiac index, chemistry.chemical_element, Oxygen consumption, Critical Care and Intensive Care Medicine, Oxygen, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Septic shock, Hyperventilation, Arterial pCO2, Medicine, Central venous-to-arterial CO2 tension gap, business.industry, Research, 030208 emergency & critical care medicine, medicine.disease, Central venous oxygen saturation, 030228 respiratory system, chemistry, Anesthesia, Carbon dioxide, medicine.symptom, business, circulatory and respiratory physiology
Abstract

Background To evaluate the effects of acute hyperventilation on the central venous-to-arterial carbon dioxide tension difference (∆PCO2) in hemodynamically stable septic shock patients. Methods Eighteen mechanically ventilated septic shock patients were prospectively included in the study. We measured cardiac index (CI), ∆PCO2, oxygen consumption (VO2), central venous oxygen saturation (ScvO2), and blood gas parameters, before and 30 min after an increase in alveolar ventilation (increased respiratory rate by 10 breaths/min). Results Arterial pH increased significantly (from 7.35 ± 0.07 to 7.42 ± 0.09, p

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14. Risk factors and events in the adult intensive care unit associated with pain as self-reported at the end of the intensive care unit stay

Author

Pierre Kalfon, Mohamed Boucekine, Philippe Estagnasie, Marie-Agnès Geantot, Audrey Berric, Georges Simon, Bernard Floccard, Thomas Signouret, Mélanie Fromentin, Martine Nyunga, Juliette Audibert, Adel Ben Salah, Bénédicte Mauchien, Achille Sossou, Marion Venot, René Robert, Arnaud Follin, Anne Renault, Maïté Garrouste-Orgeas, Olivier Collange, Quentin Levrat, Isabelle Villard, Didier Thevenin, Julien Pottecher, René-Gilles Patrigeon, Nathalie Revel, Coralie Vigne, Elie Azoulay, Olivier Mimoz, Pascal Auquier, Karine Baumstarck, IPREA Study Group, Hôpital Louis Pasteur [Chartres], Centre d'études et de recherche sur les services de santé et la qualité de vie (CEReSS), Aix Marseille Université (AMU), Hôpital Ambroise Paré [AP-HP], Service d'anesthésie - réanimation chirurgicale [CHU de Dijon], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre Hospitalier Intercommunal Toulon-La Seyne sur Mer - Hôpital Sainte-Musse, CH de Troyes, Hôpital Edouard Herriot [CHU - HCL], Hospices Civils de Lyon (HCL), Hôpital Européen de Marseille (HEM), Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Victor Provo, Centre Hospitalier Emile Roux [AP-HP], Service d'Anesthésie-Réanimation [AP-HP Hôpitaux Saint-Louis Lariboisière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Lariboisière-Fernand-Widal [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université de Paris (UP), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), CHRU Brest - Département d'Anesthésie Réanimation (CHU - BREST - DAR), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Centre hospitalier Saint-Joseph [Paris], CHU Strasbourg, service de réanimation, groupe hospitalier de la Rochelle-Ré-Aunis, Hôpital Beaujon [AP-HP], Centre Hospitalier de Lens, Hôpital de Hautepierre [Strasbourg], Centre Hospitalier d'Auxerre, Hôpital Pasteur [Nice] (CHU), Hôpital Nord [CHU - APHM], Pharmacologie des anti-infectieux (PHAR), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), IPREA Study Group: Karine Vie, Gwenaëlle Lannuzel, Hélène Bout, Jean-Philippe Parthiot, Isabelle Chazal, Philippe Charve, Caroline Prum, Jean-Pierre Quenot, Nora Perrot, Francis Augier, Niloufar Behechti, Claudine Cocusse, Céline Foulon, Laurence Goncalves, Abdesselem Hanchi, Etienne Legros, Ana Isabel Mercier, Nicolas Meunier-Beillard, Nathalie Nuzillat, Alicia Richard, Claire Boulle, Benjamin Kowalski, Elisa Klusek, Tarek Sharshar, Andrea Polito, Caroline Duvallet, Sonia Krim, Nicolas Girard, Cécile Jourdain, Stéphane Techer, Corinne Chauvel, Corinne Bruchet, Johanna Temime, Stéphanie Beaussart, Fabienne Jarosz, Jullien Crozon-Clauzel, Serge Olousouzian, Sylvie Pereira, Loïc Argentin, Valérie Cerro, Déborah Levy, Sébastien Andre, Christophe Guervilly, Laurent Papazian, Myriam Moussa, Stéphanie Renoult, Delphine Biet, Steve Novak, Jean-Christophe Orban, Aminata Diop, Carole Ichai, Antoine Tesniere, Jean-Pascal Goupil, Frédérique Laville, Nadège Rutter, Sandie Brochon, Kelly Tiercelet, Julien Amour, Nora Ait-Hamou, Marjorie Leger, Virginie Souppart, Emilie Griffault, Marie-Line Debarre, Céline Deletage, Anne-Laure Guerin, Carole Guignon, Sabrina Seguin, Christophe Hart, Kathy Dernivoix, Caroline Wuiot, Karine Sanches, Stéphane Hecketsweiler, Catherine Sylvestre-Marconville, Vincent Gardan, Stéphanie Deparis-Dusautois, Yana Chaban, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Cité (UPCité), and Centre hospitalier d'Auxerre (CHA)

Subjects
Male, Multivariate analysis, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Critical Care and Intensive Care Medicine, law.invention, 0302 clinical medicine, Risk Factors, law, Surveys and Questionnaires, Cluster Analysis, Generalized estimating equation, Patient-reported outcome, Pain Measurement, Aged, 80 and over, Univariate analysis, Chest drain, lcsh:Medical emergencies. Critical care. Intensive care. First aid, Middle Aged, [SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences, Intensive care unit, 3. Good health, Intensive Care Units, Adult intensive care unit, Female, France, Central venous catheter, Discomfort, medicine.medical_specialty, Critical Illness, Pain, Statistics, Nonparametric, 03 medical and health sciences, medicine, Humans, Pain Management, Aged, business.industry, Research, IPREA, 030208 emergency & critical care medicine, lcsh:RC86-88.9, Length of Stay, Critical care, 030228 respiratory system, Life support, Multivariate Analysis, Emergency medicine, Quality of Life, Self Report, business, Intra-hospital transport
Abstract

BackgroundThe short-term and long-term consequences of the most frequent painful procedures performed in the ICU are unclear. This study aimed to identify the risk factors associated with pain-related discomfort perceived by critically ill patients during the whole ICU stay as self-reported by patients at the end of their ICU stay.MethodsThe study involved 34 ICUs. Adult patients who survived an ICU stay of 3 calendar days or more were eligible for inclusion. Discomforts, including the pain-related discomfort, were assessed using the French 18-item questionnaire on discomfort in ICU patients, the “Inconforts des Patients de REAnimation” (IPREA). Patients scored each item from 0 (minimal discomfort) to 10 (maximal discomfort). Associations between patient characteristics at ICU admission, life support therapies and main potentially painful procedures performed during the ICU stay and pain-related discomfort scores assessed at the end of the ICU stay were analyzed.ResultsPatients with complete IPREA questionnaires (n = 2130) were included. The median pain-related discomfort score was 3 (IQR 0–5). From the univariate analysis, pain-related discomfort scores were negatively correlated with age and positively correlated with ICU stay duration; surgical patients reported significant higher pain-related discomfort scores than medical patients; chest drain insertion, chest drain removal, use of bladder catheter, central venous catheter (CVC) insertion, complex dressing change, and intra-hospital transport were associated with pain-related discomfort scores. From the multivariate analyses using generalized estimating equations models, only age, chest drain removal, use of a bladder catheter, CVC insertion, and intra-hospital transport were the main risk factors associated with pain-related discomfort scores.ConclusionPatients who underwent chest drain removal, bladder catheter, CVC insertion, and intra-hospital transport during their ICU stay reported higher pain-related discomfort scores (with respect to the whole ICU stay and assessed at the end of their ICU stay) than patients who did not experience these events. This study may pave the way for further targeted studies aiming at investigating a causal link between these common procedures in the ICU and adult critically ill patients’ perceptions of their ICU stay regarding recalled pain.Trial Registration: Clinicaltrials.gov Identifier NCT02442934, retrospectively registered on May 13, 2015

Published
2020
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