ehmrg_mortality_score: Emergency Heart Failure Mortality Risk Grade (EHMRG)

In cliot: Clinical Indices and Outcomes Tools

Emergency Heart Failure Mortality Risk Grade (EHMRG)

Description

Calculates the EHMRG score to predict 7-day mortality in patients presenting to the Emergency Department with acute heart failure. The score integrates vital signs, age, renal function, potassium, troponin status, and active cancer history to risk-stratify patients for disposition decisions (discharge vs. admission).

Usage

ehmrg_mortality_score(age, sbp, heart_rate, o2_sat, creatinine, potassium,
                      troponin_positive, active_cancer, creatinine_units = "mg/dL")

Arguments

age	Numeric. Patient age in years.
sbp	Numeric. Systolic Blood Pressure (mmHg). (Lower SBP increases risk).
heart_rate	Numeric. Heart rate (bpm). (Higher HR increases risk).
o2_sat	Numeric. Oxygen saturation (%). (Lower saturation increases risk).
creatinine	Numeric. Serum Creatinine.
potassium	Numeric. Serum Potassium (mEq/L).
troponin_positive	Numeric (0 or 1). Positive Troponin result. (1 = Yes).
active_cancer	Numeric (0 or 1). Active cancer history. (1 = Yes).
creatinine_units	String. Units for creatinine. "mg/dL" (default) or "micromol/L".

Value

A list containing:

EHMRG_Score	The calculated risk score.
Risk_Classification	Risk tier (Low, Intermediate, High, Very High).
Est_7_Day_Mortality	Estimated 7-day mortality risk.

References

Lee DS, Stitt A, Austin PC, et al. Prediction of heart failure mortality in emergent care: a cohort study. Ann Intern Med. 2012;156(11):767-775. doi:10.7326/0003-4819-156-11-201206050-00003

Examples

# Example 1: High Risk
# 85yo, SBP 100, HR 110, O2 88, Cr 2.0, K 4.8, Trop Pos, Cancer Yes
ehmrg_mortality_score(85, 100, 110, 88, 2.0, 4.8, 1, 1)

# Example 2: Low Risk
# 50yo, SBP 150, HR 70, O2 98, Cr 0.9, K 3.8, Trop Neg, No Cancer
ehmrg_mortality_score(50, 150, 70, 98, 0.9, 3.8, 0, 0)

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