Abstract: Objective To analyze the clinical manifestations, epidemiological features, pathogens, treatment and outcomes of 112
patients with infectious endocarditis. Methods The clinical data were reviewed for all the patients with the diagnosis of
infectious endocarditis in Nanfang Hospital over the period from 2002 to 2012. Results The average age of disease onset was
46 ± 17.1 years among these cases. Seventy patients (62.5%) had underlying cardiac conditions, including, in the order of
frequency, rheumatic heart disease, congenital cardiovascular anomalies, and senile valve degeneration. Clinically the patients
presented with fever, anemia, congestive heart failure, and embolism events, etc. Echocardiography found endocardial
neoplasms in 105 cases, and the mitral valve was often involved. Blood culture yielded positive results in 61 cases, and the
most common causative bacteria were Streptococcus (20.5% ), Staphylococcus (19.6% ) and Enterococcus (5.4% ). Surgical
intervention was performed in 78 cases. Ninety-one patients were cured or improved after comprehensive treatment, and 10
discontinued treatment for financial reasons; 11 died of cardiac failure (8 cases), pulmonary embolism (2 cases) and central
nervous system events (1 case). Conclusion Infectious endocarditis shows a significant change in the clinical profiles and its
mortality remains high despite improved diagnostic and therapeutic procedures.