Characteristics of medically–surgically treated (MST) versus medically treated (MT) patients
| MST group (n=81) | MT group (n=131) | p Value | |
|---|---|---|---|
| Data are n (%) unless otherwise indicated. | |||
| Mean (SD) age (years) | 52 (16) | 53 (19) | NS |
| Cardiac risk factors | 53 (65) | 80 (61) | NS |
| Prior infective endocarditis | 3 (4) | 6 (5) | NS |
| Pre-existing valvar heart disease | 34 (42) | 58 (44) | NS |
| Pre-existing prosthetic valve | 19 (23) | 17 (13) | NS |
| Congenital heart disease | 3 (4) | 5 (4) | NS |
| Non-cardiac risk factors | 29 (36) | 56 (43) | NS |
| Injected drug use | 7 (9) | 15 (11) | NS |
| Renal insufficiency | 16 (20) | 21 (16) | NS |
| Diabetes mellitus | 10 (12) | 17(13) | NS |
| Cancer | 6 (7) | 16 (12) | NS |
| Causative organisms: staphylococci | 35 (43) | 41 (31) | NS |
| Causative organisms: streptococci | 33 (41) | 69 (53) | NS |
| Infection of aortic valve | 67 (83) | 49 (37) | <0.001 |
| Congestive heart failure during endocarditis | 37 (46) | 51 (39) | NS |
| Systemic emboli during endocarditis | 36 (44) | 35 (27) | <0.01 |
| Mean (SD) symptoms/signs of endocarditis | 7 (2) | 6 (2) | <0.02 |
| Mean (SD) duration of hospital stay (days) | 43 (28) | 32 (22) | <0.002 |
| Cerebral dysfunction at discharge | 7 (9) | 8 (6) | NS |
| Long term mortality | 36 (44) | 83 (63) | <0.01 |