Table 1.
Microbiologic aetiology by IE type in 705 patients with left-sided infective endocarditis.
| Microorganism | Native | Early Prosthetic |
Late Prosthetic |
Total |
|---|---|---|---|---|
| Streptococci | ||||
| Streptococcus viridans group | 132 (25) | 3 (4) | 21 (21) | 156 (22) |
| Enterococcus spp | 60 (11) | 6 (9) | 12 (12) | 78 (11) |
| Streptococcus bovis | 18 (3) | 0 | 1 (1) | 19 (3) |
| Streptococcus agalactiae | 12 (2) | 0 | 3 (3) | 15 (2) |
| Others | 21 (4) | 0 | 3 (3) | 24 (3) |
| Staphylococci | ||||
| Staphylococcus aureus | 106 (21) | 11 (16) | 12 (14) | 137 (19) |
| Coagulase-negative Staphylococci | 45 (8) | 34 (50) | 23 (23) | 102 (15) |
| Gramnegative bacilli | 14 (3) | 1 (2) | 1 (1) | 16 (2) |
| HACEK Group | 5 (1) | 0 | 4 (4) | 9 (1) |
| Brucella spp | 12 (2) | 0 | 0 | 12 (2) |
| Coxiella burnetii | 12 (2) | 0 | 6 (6) | 18 (3) |
| Fungi | 5 (1) | 3 (4) | 1 (1) | 9 (1) |
| Other | 12 (2) | 4 (6) | 4 (4) | 20 (3) |
| Polymicrobial | 19 (4) | 0 | 0 | 19 (3) |
| Unknown | 53 (10) | 7 (10) | 11 (11) | 71 (10) |
| Total | 534 (100) | 69 (100) | 102 (100) | 705 |
Data are expressed as number of cases (%).