ie_mortality_risk_score: Infective Endocarditis (IE) Mortality Risk Score

In cliot: Clinical Indices and Outcomes Tools

Infective Endocarditis (IE) Mortality Risk Score

Description

Calculates the 6-month mortality risk score for patients with active Infective Endocarditis (IE). Derived from the International Collaboration on Endocarditis (ICE) database, this tool stratifies patients into risk categories based on host factors, disease characteristics, and complications.

Usage

ie_mortality_risk_score(age, severe_heart_failure, microorganism,
                        paravalvular_complication, dialysis, prosthetic_valve)

Arguments

age	Numeric. Patient age in years. <45: 0 pts. 45-54: 3 pts. 55-64: 5 pts. 65-74: 7 pts. >=75: 9 pts.
severe_heart_failure	Numeric (0 or 1). Presence of severe heart failure (NYHA Class III or IV). (1 = Yes, +5 pts).
microorganism	String. Causative organism. "viridans_streptococci": 0 pts. "staphylococcus_aureus": +5 pts. "other": +2 pts.
paravalvular_complication	Numeric (0 or 1). Presence of paravalvular complications (e.g., abscess, fistula). (1 = Yes, +4 pts).
dialysis	Numeric (0 or 1). Patient is on dialysis. (1 = Yes, +4 pts).
prosthetic_valve	Numeric (0 or 1). Presence of a prosthetic valve. (1 = Yes, +4 pts).

Value

A list containing:

IE_Mortality_Score	The calculated risk score (Range 0-31+).
Risk_Category	Classification (Low <=6, Intermediate 7-14, High >=15).
Est_6_Month_Mortality	Estimated percentage probability of mortality within 6 months.

References

Park LP, Chu VH, Peterson G, et al. A validated model for predicting 6-month mortality in infective endocarditis. Eur Heart J. 2016;37(30):2394-2404. doi:10.1093/eurheartj/ehv593

Examples

# Example 1: High Risk
# 70yo (+7), S. aureus (+5), Dialysis (+4)
# Score = 16
ie_mortality_risk_score(70, 0, "staphylococcus_aureus", 0, 1, 0)

# Example 2: Low Risk
# 40yo (0), Viridans Strep (0), No complications
# Score = 0
ie_mortality_risk_score(40, 0, "viridans_streptococci", 0, 0, 0)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.