We report the case of a 22-year old male, a self-confessed recreational drug user who developed cardiogenic shock because of severe destruction of the aortic valve by rapidly progressive aortic valve endocarditis. The disease progression was acute; in a matter of days, the clinical manifestations were life-threatening necessitating urgent aortic valve replacement surgery. Cultivation revealed Streptococcus viridans as the microbial agent. Subsequent recovery with antibiotic treatment was without complication. This case report shows that immediately performed transoesophageal echocardiography and early consultation with a cardiac surgeon has fundamental importance in diagnosis and management of acute infective endocarditis in haemodynamically instable patients., Malkia S. Swedi, Pudil Radek, Jiří Manďák, and Literatura 17