Infective endocarditis in Complex Cardiovascular Center in Pilsen: patients' characteristics and microbial spectrum
Abstract
Aim: To assess the set of patients with infective endocarditis (IE) in Complex Cardiovascular Center (CCC) in Pilsen and evaluate changes in microbial spectrum and prognosis of patients.
Methods: We used a retrospective analysis to identify 109 patients with the diagnosis of IE according to modified Duke criteria, who were hospitalised in CCC in Pilsen from May 2011 to April 2019. This eight-year time period was divided into two four-year intervals to compare the changes in the set of patients.
Results: The study included 85 men and 24 women. 56 patients (51 %) had native valve endocarditis (NVE), 35 patients (32 %) had prosthetic valve endocarditis (PVE) and 18 patients (17 %) had cardiac device related infective endocarditis (CDRIE). In the PVE group, 8 mechanical and 27 biological prosthesis (including 2 cases of IE after transcatheter aortic valve implantation - TAVI) were affected. When comparing the periods of May 2011 to April 2015 with May 2015 to April 2019, we found out a 14 % increase in the number of patients with IE. The number of patients with NVE decreased significantly (35 vs. 21, p = 0,001), while the number of patients with PVE (10 vs. 25, statistically significant, p = 0,0131) and CDRIE (6 vs. 12, statistically non-significant, p = 0,3017) increased. Staphylococcus aureus remains the dominant pathogen in NVE and CDRIE group (32 % and 33 %, respectively), while in PVE patients there were more often identified coagulase negative Staphylococci as a causative microbial agent (31 %). The overall in-hospital mortality rate was 23 %, relatively lower in patients with NVE (16 %), on the contrary, significantly higher in patients with PVE (31 %) a CDRIE (28 %).
Conclusion: This retrospective study confirms an increase of total incidence of infective endocarditis. The number of patients with NVE decreased significantly, while the number of patients with PVE and CDRIE increased. Patients with PVE and CDRIE also show higher mortality. The dominant pathogens are Staphylococcus aureus, coagulase negative Staphylococci and Enterococcus faecalis.