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Arterial and central venous blood samples will be drawn simultaneously and reassessed at 2 to 4-hour intervals",[13],"Procedure: CO2gap-guided resuscitation strategy",{"label":15,"type":16,"description":17,"interventionNames":18},"Lactate level-guided resuscitation strategy","NO_INTERVENTION","Lactate level-guided resuscitation strategy aimed at normalizing or decreasing lactate levels by 20% at 2 to 4-hour intervals, as per the surviving sepsis campaign guidelines.",null,[20],{"type":21,"name":9,"description":22,"armGroupLabels":23,"otherNames":18},"PROCEDURE","For patients assigned to the interventional arm, adherence to the algorithm will complement clinical practices in the following areas:\n\n* Blood sampling for venous blood gas analysis. Blood samples will be taken from an existing central venous catheter; central venous access is common clinical practice in critically ill patients.\n* The use of dobutamine and blood transfusions in patients showing signs of oxygen deficiency (both will be carried out in accordance with the intended use and conditions of current practice).",[9],[25],{"name":26,"role":27,"phone":28,"phoneExt":18,"email":29},"Lise Laclautre","CONTACT","0473754963","promo_interne_drci@chu-clermontferrand.fr",[31,47,58,70,81,89,101,110,121,132,143,154,162,173,184,195,206,217,228,236,244,252,260,271,282,293,301,311],{"facility":32,"status":33,"city":34,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":37,"geoPoint":42,"contacts":43},"CHu Angers","NOT_YET_RECRUITING","Angers","France","FR",{"type":38,"coordinates":39},"Point",[40,41],-0.55202,47.47156,{"lat":41,"lon":40},[44],{"name":45,"role":46,"phone":18,"phoneExt":18,"email":18},"Sigismond Lasocki","PRINCIPAL_INVESTIGATOR",{"facility":48,"status":33,"city":49,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":50,"geoPoint":54,"contacts":55},"CH Aurillac","Aurillac",{"type":38,"coordinates":51},[52,53],2.43983,44.92539,{"lat":53,"lon":52},[56],{"name":57,"role":46,"phone":18,"phoneExt":18,"email":18},"Emanuele TURBIL",{"facility":59,"status":60,"city":61,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":62,"geoPoint":66,"contacts":67},"CH de la Côte Basque","RECRUITING","Bayonne",{"type":38,"coordinates":63},[64,65],-1.473,43.49316,{"lat":65,"lon":64},[68],{"name":69,"role":46,"phone":18,"phoneExt":18,"email":18},"Hadrien ROZE",{"facility":71,"status":60,"city":72,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":73,"geoPoint":77,"contacts":78},"CHU Bordeaux Hôpital Haut Lévèque","Bordeaux",{"type":38,"coordinates":74},[75,76],-0.58046,44.84124,{"lat":76,"lon":75},[79],{"name":80,"role":46,"phone":18,"phoneExt":18,"email":18},"Antoine DEWITTE",{"facility":82,"status":60,"city":72,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":83,"geoPoint":85,"contacts":86},"CHU Bordeaux Pellegrin Hospital",{"type":38,"coordinates":84},[75,76],{"lat":76,"lon":75},[87],{"name":88,"role":46,"phone":18,"phoneExt":18,"email":18},"Matthieu BIAIS",{"facility":90,"status":60,"city":91,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":92,"geoPoint":96,"contacts":97},"CHU Clermont-Ferrand Estaing","Clermont-Ferrand",{"type":38,"coordinates":93},[94,95],3.08682,45.77969,{"lat":95,"lon":94},[98,99],{"name":26,"role":27,"phone":28,"phoneExt":18,"email":29},{"name":100,"role":46,"phone":18,"phoneExt":18,"email":18},"Emmanuel FUTIER",{"facility":102,"status":60,"city":91,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":103,"geoPoint":105,"contacts":106},"CHU Clermont-Ferrand Gabriel Montpied",{"type":38,"coordinates":104},[94,95],{"lat":95,"lon":94},[107,108],{"name":26,"role":27,"phone":28,"phoneExt":18,"email":29},{"name":109,"role":46,"phone":18,"phoneExt":18,"email":18},"Thomas GODET",{"facility":111,"status":60,"city":112,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":113,"geoPoint":117,"contacts":118},"CHU Dijon","Dijon",{"type":38,"coordinates":114},[115,116],5.01391,47.31344,{"lat":116,"lon":115},[119],{"name":120,"role":46,"phone":18,"phoneExt":18,"email":18},"Grégoire GUINOT",{"facility":122,"status":33,"city":123,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":124,"geoPoint":128,"contacts":129},"CHU Grenoble","Grenoble",{"type":38,"coordinates":125},[126,127],5.71479,45.17869,{"lat":127,"lon":126},[130],{"name":131,"role":46,"phone":18,"phoneExt":18,"email":18},"Marie Christine HERAULT",{"facility":133,"status":60,"city":134,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":135,"geoPoint":139,"contacts":140},"CH Le puy en Velay","Le Puy-en-Velay",{"type":38,"coordinates":136},[137,138],3.88523,45.04366,{"lat":138,"lon":137},[141],{"name":142,"role":46,"phone":18,"phoneExt":18,"email":18},"Rémi ESPENEL",{"facility":144,"status":33,"city":145,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":146,"geoPoint":150,"contacts":151},"HCL - 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Service d'anesthésie-Réanimation médicale","Strasbourg",{"type":38,"coordinates":286},[287,288],7.74553,48.58392,{"lat":288,"lon":287},[291],{"name":292,"role":46,"phone":18,"phoneExt":18,"email":18},"Olivier COLLANGE",{"facility":294,"status":60,"city":284,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":295,"geoPoint":297,"contacts":298},"CHU Strasbourg Service d'Anesthésie-Réanimation chirurgicale",{"type":38,"coordinates":296},[287,288],{"lat":288,"lon":287},[299],{"name":300,"role":46,"phone":18,"phoneExt":18,"email":18},"Julien POTTERCHER",{"facility":302,"status":60,"city":303,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":304,"geoPoint":308,"contacts":309},"Chu Toulouse","Toulouse",{"type":38,"coordinates":305},[306,307],1.44367,43.60426,{"lat":307,"lon":306},[310],{"name":243,"role":46,"phone":18,"phoneExt":18,"email":18},{"facility":312,"status":33,"city":313,"state":18,"zip":18,"country":35,"countryCode":36,"cosmosGeoPoint":314,"geoPoint":318,"contacts":319},"CH Vichy","Vichy",{"type":38,"coordinates":315},[316,317],3.42577,46.12709,{"lat":317,"lon":316},[320],{"name":321,"role":46,"phone":18,"phoneExt":18,"email":18},"Loic DOPEUX",{"type":323,"investigatorFullName":18,"investigatorTitle":18,"investigatorAffiliation":18,"oldNameTitle":18,"oldOrganization":18},"SPONSOR","100606724","veno-arterial-carbon-dioxide-partial-pressure-difference-co2gap-for-early-resuscitation-of-septic-shock-100606724",false,"NCT07179276","Veno-arterial Carbon Dioxide Partial Pressure Difference (CO2gap) for Early Resuscitation of Septic Shock","Veno-arterial Carbon Dioxide Partial Pressure Difference (CO2gap) for Early Resuscitation of Septic Shock: A Multicenter Prospective Randomized Trial (CARBON)","CARBON","Inclusion Criteria:\n\n* Patients aged 18 years or older AND\n* Acutely admitted to a study ICU AND\n* Primary diagnosis of septic shock according to the Sepsis-3 criteria and defined as:\n\n  * A suspected or documented site of infection or positive blood culture AND\n  * Acute increase of at least 2 points in the Sequential Organ Failure Assessment (SOFA) score consequent to the infection AND\n  * Having a serum lactate level \\>2 mmol\u002Fl AND\n  * Requirement of vasopressors (any dose of norepinephrine) to maintain mean arterial pressure (MAP) ≥65 mmHg despite adequate fluid resuscitation (at least 1L of IV fluid in the last 24 hours prior to screening)\n\nExclusion Criteria:\n\n* Septic shock for more than 12 hours at the time of screening\n* Primary cause of hypotension not due to sepsis (e.g., acute bleeding)\n* Decision not to resuscitate (or to limit full care) or not to intubate taken before obtaining consent\n* Death is deemed to be imminent or inevitable or patients with an underlying disease process with a life expectancy of less than 3 months\n* Anticipated surgery during the first 24 hours after randomization\n* Patient or their relatives' refusal to participate\n* Patients participating in another RCT with interventions possibly compromising the primary outcome\n* Prior enrollment in the CARBON trial\n* Known to be pregnant.\n* Legal protection (i.e., incompetence to provide consent and no guardian or incarceration)\n* No affiliation with the French health care system","ALL","18 Years",{"count":335,"type":336},750,"ESTIMATED","INTERVENTIONAL",[339],"NA","Sepsis is a dysregulated host response to infection that leads to life-threatening organ dysfunction and represents a major healthcare problem. Septic shock is the most severe form, characterized by increased capillary permeability and vasodilation, resulting in hypotension and tissue hypoxia. Early identification and treatment of tissue hypoperfusion are pivotal components of initial resuscitation to limit progression to multiple organ dysfunction and death. The 2021 Surviving Sepsis Guidelines recommend guiding initial resuscitation by targeting decreases in serum lactate levels in patients with elevated lactate. However, although elevated lactate levels may reflect tissue hypoxia, serum lactate is not a direct marker of tissue perfusion. Hyperlactatemia may be attributable to mechanisms other than tissue hypoperfusion, such as accelerated aerobic glycolysis driven by excessive β-adrenergic stimulation or impaired clearance (e.g., in liver failure).\n\nThe venous-to-arterial carbon dioxide partial pressure difference (CO₂ gap), which is inversely related to cardiac output, has been shown to reflect the adequacy of venous blood flow to remove CO₂ from tissues. The CO₂ gap is closely linked to microcirculatory blood flow during the early resuscitation phase of septic shock and may effectively identify persistent tissue hypoperfusion in shock states. A persistently high CO₂ gap during early resuscitation has been associated with significantly higher 28-day mortality and increased Sequential Organ Failure Assessment (SOFA) scores. Moreover, the CO₂ gap has been shown to respond to changes in cardiac output during inotrope infusion in patients with low blood flow, suggesting that its assessment could be useful for therapeutic adjustments. Therefore, there are compelling arguments to evaluate the usefulness of the CO₂ gap in guiding early resuscitation in patients with septic shock.\n\nThe investigators postulated that CO₂ gap-guided early resuscitation may be more effective in improving outcomes than lactate-guided resuscitation.",[342,343],"Sepsis - to Reduce Mortality in the Intensive Care Unit","Septic Shock",[345,346,347,348,349],"lactate","CO2 gap","resuscitation strategie","sepsis","hemodynamic therapy","2026-06-12",{"date":352,"type":353},"2026-06-15","ACTUAL",{"date":355,"type":353},"2026-03-29",{"date":357,"type":336},"2027-12-31",{"name":5,"class":6},28]