Effect of Early Use of Levosimendan Versus Placebo on Top of a Conventional Strategy of Inotrope Use on a Combined Morbidity-mortality Endpoint in Patients With Cardiogenic Shock
Cardiogenic shock (CS) mortality remains high (40%). Despite their frequent use, few clinical outcome data are available to guide the initial selection of vasoactive drug therapies in patients with CS. Based on experts' opinions, the combination of norepinephrine-dobutamine is generally recommended as a first line strategy. Inotropic agents increase myocardial contractility, thereby increasing cardiac output. Dobutamine is commonly recommended to be the inotropic agent of choice and levosimendan is generally used following dobutamine failure. It may represent an ideal agent in cardiogenic shock, since it improves myocardial contractility without increasing cAMP or calcium concentration. At present, there are no convincing data to support a specific inotropic agent in patients with cardiogenic shock. Our hypothesis is that the early use of levosimendan, by enabling the discontinuation of dobutamine, would accelerate the resolution of signs of low cardiac output and facilitate myocardial recovery.
⁃ Adult patient ≥ 18 years with cardiogenic shock defined by:
• Adequate intravascular volume
• Norepinephrine to maintain MAP at least at 65 mmHg for at least 3 hours and less than 24h. At inclusion the dose must be \<1 microgram/kg/min under norepinephrine base or \<2 microgram/kg/min under norepinephrine tartrate, OR/AND Dobutamine since at least 3h and less than 24h at inclusion.
• Tissue hypoperfusion: at least 1 sign within 24h prior to inclusion (lactate ≥ 2 mmol/l; mottling, capillary refeel time \> 3 seconds, oliguria \<500ml/24h or ≤ 20 ml/h during the last 2 hours, ScVO2 ≤ 60% or veno-arterial PCO2 gap ≥ 5 mmHg);