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Cardiac Risk Score of Wong et al for Predicting Prolonged ICU Length of Stay (LOS) Following Coronary Artery Bypass Graft (CABG) Surgery

Purpose: To identify a patient following coronary artery bypass graft (CABG) surgery who may have a prolonged ICU LOS based on the cardiac risk score of Wong et al.

Description

Wong et al developed 3 cardiac risk scores for patients undergoing coronary artery bypass graft (CABG) surgery. One of these helped to identify a patient who may have a prolonged length of stay (LOS) in the intensive care unit (ICU) following surgery. The authors are from the University of Toronto.


Parameters:

(1) age in years

(2) gender

(3) bleeding after surgery

(4) intra-aortic balloon pump

(5) therapy with inotropes

(6) atrial arrhythmias

(7) renal function

(8) myocardial infarction prior to surgery

 

Parameter

Finding

Points

age in years

<= 60 years of age

0

 

61 to 75 years of age

2

 

> 75 years of age

4

gender

male

0

 

female

3

bleeding

not excessive

0

 

excessive

3

intra-aortic balloon pump

no

0

 

yes

6

therapy with inotropes

no

0

 

yes

4

atrial arrhythmia

no

0

 

yes

4

renal function

normal

0

 

insufficiency

6

myocardial infarction

none

0

 

present

3

 

total score =

= SUM(points for all 8 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 33

• The higher the score the greater the risk of prolonged length of stay in the ICU.

 

Total Score

Percent with Prolonged LOS ICU

0

1%

1 to 4

5%

5 to 8

16%

9 to 12

33%

13 to 33

68%

 


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Specialty

Objective

ICD-10