Table 5.
Simplified Risk Score Calculation for 6‐Month Mortality in IE
| Prognostic Variable | Weight |
|---|---|
| Constant | 4 |
| Host factors | |
| Age ≤45 y | 0 |
| Age 46–60 y | 2 |
| Age 61–70 y | 3 |
| Age >70 y | 4 |
| History of dialysis | 3 |
| IE factors | |
| Nosocomial IE | 2 |
| Prosthetic IE | 1 |
| Symptoms >1 month before admission | −1 |
| Staphylococcus aureus | 1 |
| Viridans group streptococci | −2 |
| Aortic vegetation | 1 |
| Mitral vegetation | 1 |
| IE complications | |
| NYHA class 3 or 4 heart failure | 3 |
| Stroke | 2 |
| Paravalvular complication | 2 |
| Persistent bacteremia | 2 |
| Surgical treatment | −2 |
Probability of 6‐month mortality=2.416×score+0.109×score2−4.849. IE indicates infective endocarditis; NYHA, New York Heart Association.