The infective endocarditis mortality risk score calculator assesses a patient's risk of 6-month mortality based on several clinical parameters. The process involves collecting patient data, assigning scores to each input, calculating a total score, and interpreting the risk level.

First, the calculator takes the following inputs:

- **Age**: Variables considered are categorized as:
  - <= 45 years (0 points)
  - 46-60 years (2 points)
  - 61-70 years (3 points)
  - > 70 years (4 points)
- **History of dialysis**: Yes (3 points), No (0 points)
- **Nosocomial infective endocarditis**: Yes (2 points), No (0 points)
- **Prosthetic infective endocarditis**: Yes (1 point), No (0 points)
- **Symptoms more than 1 month before admission**: Yes (1 point), No (0 points)
- **Staphylococcus aureus**: Yes (1 point), No (0 points)
- **Viridans group streptococci**: Yes (2 points), No (0 points)
- **Aortic vegetation**: Yes (1 point), No (0 points)
- **Mitral vegetation**: Yes (1 point), No (0 points)
- **New York Heart Association class 3 or 4 heart failure**: Yes (3 points), No (0 points)
- **Stroke**: Yes (2 points), No (0 points)
- **Paravalvular complication**: Yes (2 points), No (0 points)
- **Persistent bacteremia**: Yes (2 points), No (0 points)
- **Surgical treatment**: Yes (2 points), No (0 points)

Using the points assigned to each input, the calculator computes a total score ranging from 0 to 27. This total score is then used to interpret the patient's risk of 6-month mortality:

- A score of 0 to 6 indicates a risk of 8-12%
- A score of 7 to 8 indicates a risk of 16-20%
- A score of 9 to 10 indicates a risk of 30-34%
- A score of 11 to 16 indicates a risk of 42-50%
- A score of 17 or higher indicates a risk greater than 60%

This tool facilitates the estimation of mortality risk for patients with infective endocarditis, helping healthcare providers make informed clinical decisions based on quantitative data.

The Infective Endocarditis Mortality Risk Score is a clinical calculator used to predict the risk of in-hospital mortality in patients diagnosed with infective endocarditis, a serious infection of the heart's inner lining. This scoring system is particularly useful in guiding clinical decision-making, including the need for early surgery, and in facilitating discussions about prognosis with patients and their families. The score is calculated based on several factors including age, comorbidities, causative organism, complications, and clinical features at presentation. It is not applicable to patients without a confirmed diagnosis of infective endocarditis or those with prosthetic valve endocarditis, as the risk factors and prognosis may differ in these populations.

Infective endocarditis mortality risk score