Description

Matsumoto et al reported a model for predicting the risk of surgical site infection (SSI) after spinal surgery performed on a patient with cerebral palsy. This can help to identify a patient who may benefit from more aggressive management to avoid infection. The authors are from Columbia University, Children's Hospital Cleveland, Cedars Sinai Medical Center, Children's Hospital of Philadelphia, the Johns Hopkins University, and Bloomberg Children's Center in Baltimore.


Patient selection: cerebral palsy requiring spinal fusion.

 

Parameters:

(1) ambulatory status

(2) diaper dependence

(3) age in years

(4) number of degrees in the major coronal curve of the spine

(5) behavioral disorder or delay

(6) revision surgery

 

Parameter

Finding

Points

ambulatory status

ambulatory

0

 

non-ambulatory

1.39

diaper dependent

no

0

 

yes

0.28

age in years

< 12 years

0.92

 

>= 12 years

0

degrees in major curve

<= 90°

0

 

> 90°

0.29

behavioral issues

no

0

 

yes

0.28

revision surgery

no

0

 

yes

0.23

 

value of X =

= SUM(points for all of the parameters) - 4.6

 

probability of surgical site infection =

= 1 / (1 + EXP((-1) * X))

 

Performance:

• The area under the ROC curve is 0.74.


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