Efficacy of Furosemide Versus Vascular Filling in Patients With Acute Myocardial Infarction

Inclusion Criteria * Age \>18 years * Inferior acute myocardial infarction (≤J + 7) * Right ventricular extension defined by one following echocardiographic criteria: * Dilatation of the right ventricle (RV/LV area\> 0.9) * RV dysfunction defined by TAPSE \<16mm or S velocity \<10cm.s-1 * Akinesia or hypokinesia of two contiguous segments of the right ventricle * Decrease of pitch on lung failure flow \<150ms * Inferior vena cava dilatation (≥20mm) and non-compliant (changes \<50%) associated with one hemodynamic instability criteria: * Oliguria (diuresis \<800mL/24h or 0.5mL/kg/min) * Systolic blood pressure \<100mmHg * Oxygen saturation \<91% on room air * Bradycardia (heart rate \<60/min, not valid for patients on beta-blockers). * Informed consent for study participation signed. Exclusion Criteria * Minor and pregnant woman * Mechanical complications of myocardial infarct * Patients who received\> 40mg diuretic /day during the last 15 days * Hypersensitivity to furosemide or any of its excipients * Aortic stenosis (area \<1 cm² or mean gradient\> 40mmHg), mitral or aortic regurgitation grade ≥3 * Catecholamine support for left ventricular failure with left ventricular ejection fraction \<35% * Renal impairment defined by a serum creatinine\> 200μmol / mL * Sodium and water retention * Urinary tract obstruction * Hypovolemia or dehydration * Severe hypokalemia (K + \<3 mmol / L) * Severe hyponatremia (Na + \<125 mmol / L) * Hepatitis ongoing, liver failure or hepatic encephalopathy * No affiliation to a social security scheme or other social protection scheme * Private Patient of liberty or under legal protection (guardianship) * Inability or refusal to understand or refusal to sign the informed consent from study participation