To describe the clinical features and effects of intravascular intervention of expanded aneurysm on the broken tentorium. Subjects and methods: Cross-sectional descriptive study of 65 patients, who were diagnosed with expanded aneurysm on the broken tentorium at 115 People’s Hospital from January 2011 to August 2017. | Journal of military pharmaco-medicine no9-2018 CLINICAL FEATURES AND EFFECTS OF INTRAVASCULAR INTERVENTION OF EXPANDED ANEURYSM ON THE BROKEN TENTORIUM Nguyen Duy Thanh1; Nguyen Hung Minh2; Vu Van Hoe2 SUMMARY Objectives: To describe the clinical features and effects of intravascular intervention of expanded aneurysm on the broken tentorium. Subjects and methods: Cross-sectional descriptive study of 65 patients, who were diagnosed with expanded aneurysm on the broken tentorium at 115 People’s Hospital from January 2011 to August 2017. Results: The most common age was from 40 to 60 years old (). Women had a higher incidence of disease than men (); for prevalence of high blood pressure, clinical symptoms included sudden headache of , vomiting of and nausea of , meningitis of , sensory impairment of , seizures of , focal neurology of , drooping eyelid of 62% and language disorders of . Clinical symptoms at the time of hospitalization: for Hunt-Hess level I, for level II, for level III and 6% for level IV. Treatment of expanded aneurysm on the broken tentorium with coils and insertion ball had 29 cases (45%), obstruction with coils and stents had 34 cases (52%) and change in flow had 2 cases (3%). Total obstruction was 87%, partial obstruction was 5%, change in flow was 3% and failure was 5%. Right ventricle dilatation with VP shunt was 1 case, pneumonia was 9 cases and residual aneurysm was 1 case. These results were assessed in Glasgow, positive at 71%, negative at 25% and mortality at 5%. According to Hunt-Hess I - III, 46/65 patients were positive at , and Hunt-Hess IV - V were negative at . * Keywords: Intracranial aneurysm; Hemorrhagic meningine; Clinical features; Intravascular intervention. INTRODUCTION Intracranial aneurysm is a common system of cerebral arteries. Intracranial aneurysm accounted for 1 to 8% [5] of the population, most of the intracranial aneurysms were detected after