Aneurysm of the sinus of Valsalva is a rare cardiac disease. It is usually an asymptomatic anomaly, however when it ruptures, symptoms appear and patient's condition deteriorates rapidly. We describe a case of a 24-year female with a ruptured aneurysm of the non-coronary sinus of Valsalva. The aneurysm ruptured in the right atrium causing severe hemodynamic complications. The diagnosis was made by transthoracic and transesophageal echocardiography.