Study of the initial effect of apply the Extracorporeal Membrance Oxygenation (ECMO) for 9 patients who were been severe cardiogenic shock in ICU - Bach Mai hospital from 2010 to 3/2013, result shows the perfusion of organs were improved in all patient who underwent ECMO by time as reduced tachycardia, MAP > 65 mmHg, increased urine output volume, reduced SOFA score, increased PaO2/FiO2 ratio... and 5/9 patients also were survival, but there were some remarkablely complication that could be prevented if we had protocol for monitoring and troubleshooting for.