Postoperative Pneumonia (POP) Risk Calculator

This tool supports clinical judgment and does not replace it.

Everything is calculated in your browser. Nothing you enter is sent anywhere or saved.

Estimates the risk of pneumonia after surgery.

For peripheral vascular procedures, this page uses the published value, −0.4519. The original spreadsheet had a sign typo there, +0.4519, so it is no longer offered.

Procedure

ASA class

Age Age in years, 1 to 100

COPD GOLD stage 2-4 COPD

No Yes

Functional status

Totally independent Partially dependent Totally dependent

Sepsis

Smoking Smoking within the year prior to surgery

No Yes

About this model

Built from 211,410 patients in the 2007 American College of Surgeons National Surgical Quality Improvement Program (NSQIP), and validated on 257,385 patients in the 2008 data.
3,825 patients (1.8%) developed postoperative pneumonia in the 2007 data.
C statistic 0.860 in training and 0.855 in validation.

Citation

Gupta H, Gupta PK, Schuller D, Fang X, Miller WJ, Modrykamien A, Wichman TO, Morrow LE. Development and validation of a risk calculator for predicting postoperative pneumonia. Mayo Clin Proc. 2013;88(11):1241-9. doi:10.1016/j.mayocp.2013.06.027 · PubMed 24182703

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