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Harborview Medical Center Preoperative Ruptured Abdominal Aortic Aneurysm Mortality Risk Score

Description

Garland et al reported a simple score for predicting mortality for a patient with a ruptured abdominal aortic aneurysm. The authors are from the Vascular Institute of the Rockies, Harborview Medical Center and the University of Washington in Seattle.


Patient selection: ruptured abdominal aortic aneurysm

 

Outcome: 30-day mortality

 

Parameters from prior to surgery:

(1) age of the patient in years

(2) serum creatinine concentration in mg/dL

(3) minimum systolic blood pressure in mm Hg (at any time)

(4) arterial pH

 

Parameter

Finding

Points

age of the patient

<= 76 years

0

 

> 76 years

1

serum creatinine

<= 2.0 mg/dL

0

 

> 2.0 mg/dL

1

minimum systolic blood pressure

< 70 mm Hg

1

 

>= 70 mm Hg

0

arterial pH

< 7.2

1

 

>= 7.2

0

 

total score =

= SUM(points for all 4 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 4

• The higher the score the greater the 30-day mortality rate.

• Endovascular repair is associated with a lower mortality rate.

 

Score

30-day Mortality

0

27%

1

22%

2

70%

3

80%

4

100%

 

Performance:

• The area under the ROC curve was 0.78 for a dichotomized model.


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