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Score of Simons et al for Predicting Perioperative Mortality Associated with Resection of a Hepatic Neoplasm

Description

Simons et al developed a simple score for predicting perioperative mortality for a patient undergoing resection of a hepatic neoplasm. This can help to identify a patient who may be at greater risk for surgery. The authors are from the University of Massachusetts. 


Patient selection: resection of a hepatic neoplasm (primary or metastatic), excluding transplant, apparently adults

 

Parameters:

(1) gender

(2) age in years

(3) Romano modification of the Charlson comorbidity score

(4) procedure type (radiofrequency ablation or RFA, enucleation, wedge resection, lobectomy)

(5) hospital type

(6) hepatic neoplasm type

 

Parameter

Finding

Points

gender

male

1

 

female

0

age in years

<= 55 years

0

 

56 to 65 years

1

 

66 to 75 years

2

 

> 75 years

5

comorbidity score

0

0

 

1

2

 

2

4

 

>= 3

9

procedure type

RFA/enucleation

0

 

wedge resection

3

 

lobectomy

6

hospital type

teaching

0

 

nonteaching

1

neoplasm type

primary

2

 

metastatic

0

 

total score =

= SUM(points for all 6 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 24

• The higher the score the greater the perioperative mortality.

 

Total Score

Mortality (rounded)

0 to 4

1%

5 to 9

2.5%

10 to 14

7%

15 to 19

18%

20 to 24

36%

 

Performance:

• The area under the ROC curve was 0.76 for the derivation set and 0.70 for the validation set.


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