revised_cardiac_risk_index: Revised Cardiac Risk Index (RCRI) for Pre-Operative Risk

In cliot: Clinical Indices and Outcomes Tools

Revised Cardiac Risk Index (RCRI) for Pre-Operative Risk

Description

Calculates the Revised Cardiac Risk Index (Lee Index) to estimate the risk of major cardiac complications (myocardial infarction, pulmonary edema, ventricular fibrillation, cardiac arrest, complete heart block) after noncardiac surgery.

Usage

revised_cardiac_risk_index(high_risk_surgery, ischemic_heart_disease,
                           congestive_heart_failure, cerebrovascular_disease,
                           insulin_treatment, preop_creatinine_gt_2)

Arguments

high_risk_surgery	Numeric (0 or 1). Intraperitoneal, intrathoracic, or suprainguinal vascular surgery. (1 = Yes).
ischemic_heart_disease	Numeric (0 or 1). History of MI, positive exercise test, current chest pain due to ischemia, nitrate use, or pathological Q waves. (1 = Yes).
congestive_heart_failure	Numeric (0 or 1). History of CHF, pulmonary edema, or paroxysmal nocturnal dyspnea. (1 = Yes).
cerebrovascular_disease	Numeric (0 or 1). Prior TIA or stroke. (1 = Yes).
insulin_treatment	Numeric (0 or 1). Pre-operative treatment with insulin. (1 = Yes).
preop_creatinine_gt_2	Numeric (0 or 1). Pre-operative serum creatinine > 2.0 mg/dL (> 176.8 micromol/L). (1 = Yes).

Value

A list containing:

RCRI_Score	The calculated score (Range 0-6).
Risk_Class	The Lee Risk Class (I, II, III, or IV).
Est_Major_Cardiac_Event_Risk	Estimated probability of a major cardiac event based on the original validation cohort.

References

Lee TH, Marcantonio ER, Mangione CM, et al. Derivation and prospective validation of a simple index for prediction of cardiac risk of major noncardiac surgery. Circulation. 1999;100(10):1043-1049. doi:10.1161/01.cir.100.10.1043

Examples

# Example 1: Low Risk
# No risk factors
# Score = 0
revised_cardiac_risk_index(0, 0, 0, 0, 0, 0)

# Example 2: High Risk
# Vascular surgery (+1), Insulin (+1), History of MI (+1)
# Score = 3
revised_cardiac_risk_index(1, 1, 0, 0, 1, 0)

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