Dalton et al reported 2 nomograms for predicting 30 day morbidity and mortality following noncardiac surgery. The model for mortality can help to identify a patient for whom surgery may be particularly hazardous. The authors are from the Cleveland Clinic and McMaster University.
Each CPT code was assigned a Proceedural Severity Score (PSS), which is a univariable score measuring procedure-associated risks.
Patient selection: noncardiac surgery and age from 10 to 90 years
Parameters:
(1) age in years
(2) ASA physical status
(3) Procedural Severity Score for the surgical CPT (available at links.lww.com/ALN/A738
Total Score |
Points |
---|---|
< 10 |
NA |
10 to 60 |
(-0.001321 * ((age)^2)) + (0.3139 * (age)) - 3 |
60 to 90 |
(0.00425 * ((age)^2)) - (0.2285 * (age)) + 9.475 |
> 90 |
NA |
ASA Status |
Points |
---|---|
ASA 1 |
0 |
ASA 2 |
7.6 |
ASA 3 |
21 |
ASA 4 |
34 |
ASA 5 |
48 |
total score =
= (points for age) + (points for ASA status) + (points for PSS)
Total Score |
30-Day Mortality |
---|---|
< 109 |
< 1% |
109 to 132 |
(0.01786 * ((points)^2)) - (3.92 * (points)) + 216.2 |
132 to 161 |
(0.03284 * ((points)^2)) - (7.51 * (points)) + 428.7 |
161 to 170 |
(-0.05234 * ((points)^2)) + (18.98 * (points)) - 1628 |
Purpose: To predict 30-day mortality following noncardiac surgery using the nomogram of Dalton et al.
Specialty: Anesthesiology
Objective: risk factors, severity, prognosis, stage
ICD-10: Z48, J96,