Ramanan et al developed a risk index for predicting 30-day mortality following open repair of an aortic aneurysm. This index can help to identify a patient who may benefit from more aggressive management. The authors are from Creighton University, the University of Wisconsin, University of Nebraska, and hospitals in the Veterans Health Administration.
Patient selection: open repair of infrarenal abdominal aortic aneurysm
Outcome: 30-day mortality
Parameters:
(1) dyspnea
(2) history of previous peripheral revascularization or amputation
(3) age in years
(4) serum creatinine in mg/dL
(5) platelet count
(6) gender
|
Parameter |
Finding |
Points |
|
dyspnea |
none |
0 |
|
|
with moderate exertion |
2 |
|
|
at rest |
8 |
|
history of revascularization or amputation |
no |
0 |
|
|
yes |
3 |
|
age in years |
<= 65 years of age |
0 |
|
|
> 65 years of age |
3 |
|
serum creatinine |
<= 1.5 mg/dL |
0 |
|
|
> 1.5 mg/dL |
2 |
|
platelet count |
< 150,000 per µL |
2 |
|
|
150,000 to 350,000 per µL |
0 |
|
|
> 350,000 per µL |
2 |
|
gender |
male |
0 |
|
|
female |
2 |
total score =
= SUM(points for all 6 parameters)
Interpretation:
• minimum score: 0
• maximum score: 20
• The higher the score the greater the risk.
|
Score |
Risk Group |
30-Day Mortality |
|
0 to 7 |
low |
<= 5% |
|
8 to 11 |
intermediate |
7 to 15% |
|
12 to 20 |
high |
20 to 47% |
Specialty: Anesthesiology
ICD-10: ,
