pmp_mortality_score: Preoperative Mortality Predictor (PMP) Score

In cliot: Clinical Indices and Outcomes Tools

Preoperative Mortality Predictor (PMP) Score

Description

Calculates the Preoperative Mortality Predictor (PMP) Score, a risk stratification tool developed from the ACS-NSQIP database to predict 30-day mortality in general surgery patients. The score sums points assigned to 14 preoperative variables, including age, comorbidities, and functional status.

Usage

pmp_mortality_score(age, inpatient_status, sepsis, poor_functional_status,
                    disseminated_cancer, cardiac_comorbidity, pulmonary_comorbidity,
                    renal_comorbidity, liver_comorbidity, steroid_use, weight_loss,
                    bleeding_disorder, dnr_status, obesity)

Arguments

age	Numeric. Patient age in years. (<65: 0, 65-69: 0.5, 70-79: 1, >=80: 2).
inpatient_status	Numeric (0 or 1). Is the patient an inpatient? (1 = Yes, +6 pts).
sepsis	Numeric (0 or 1). Presence of sepsis, severe sepsis, or septic shock within 48 hours prior to surgery. (1 = Yes, +4 pts).
poor_functional_status	Numeric (0 or 1). Totally dependent functional status (requires total assistance for all daily activities). (1 = Yes, +3 pts).
disseminated_cancer	Numeric (0 or 1). Disseminated cancer. (1 = Yes, +1 pt).
cardiac_comorbidity	Numeric (0 or 1). Presence of cardiac comorbidities (History of CHF, MI, Angina, Peripheral Artery Disease, or Hypertension requiring medication). (1 = Yes, +5 pts).
pulmonary_comorbidity	Numeric (0 or 1). Presence of pulmonary comorbidities (Ventilator dependence, COPD, or current Pneumonia). (1 = Yes, +3 pts).
renal_comorbidity	Numeric (0 or 1). Presence of renal comorbidities (Dialysis or Acute Renal Failure). (1 = Yes, +1 pt).
liver_comorbidity	Numeric (0 or 1). Presence of liver comorbidities (Ascites or Esophageal Varices). (1 = Yes, +1 pt).
steroid_use	Numeric (0 or 1). Chronic steroid use for a chronic condition. (1 = Yes, +1 pt).
weight_loss	Numeric (0 or 1). >10% loss of body weight in the last 6 months. (1 = Yes, +1 pt).
bleeding_disorder	Numeric (0 or 1). Presence of a bleeding disorder. (1 = Yes, +1 pt).
dnr_status	Numeric (0 or 1). Do Not Resuscitate (DNR) status. (1 = Yes, +1 pt).
obesity	Numeric (0 or 1). Obesity (BMI >= 30 kg/m^2). (1 = Yes, -1 pt).

Value

A list containing:

PMP_Score	The calculated total risk score.
Interpretation	General interpretation of the score (Higher score indicates higher mortality risk).

References

Ghanem OM, et al. Predicting risk of death in general surgery patients on the basis of preoperative variables using American College of Surgeons National Surgical Quality Improvement Program data. Perm J. 2012;16(4):9-15. doi:10.7812/TPP/12-019

Examples

# Example 1: High Risk
# 80yo (+2), Inpatient (+6), Cardiac (+5), Sepsis (+4)
# Score = 17
pmp_mortality_score(80, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0)

# Example 2: Low Risk
# 45yo (0), Obesity (-1), No other factors
# Score = -1
pmp_mortality_score(45, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1)

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