EFFECTIVENESS OF THROMBOLYTIC THERAPY BY ALTEPLASE (rt-PA) IN THE TREATMENT OF INTRAVENTRICULAR HEMORRHAGE The aim of a study on 41 patients admitted to the Emergency Department of Bach Mai Hospital due to intraventricular hemorrhge with acute dilatation who were undergone ventriculostomy to drain CSF externally at the Emergency Department of Bach Mai Hospital from 8/2012 to 2/2014 is to evaluate the effectiveness of thrombolytic therapy by Alteplase (rt-PA).