Dorigo et al used a model to predict amputation-free survival for a patient with critical limb ischemia. This can help to identify a patient who may benefit from a heparin-bonded ePTFE graft. The authors are from the PROPATEN Italian Registry Group.
Patient selection: critical limb ischemia
Outcome: 5 year ampuation free survival
Parameters:
(1) age in years
(2) history of ischemic heart disease
(3) end-stage renal disease (ESRD)
(4) tissue loss
(5) poor runoff (0 or 1 patient outflow vessels on preoperative imaging)
|
Parameter |
Finding |
Points |
|
age in years |
<= 75 years |
0 |
|
|
> 75 years |
1 |
|
history of ischemic heart disease |
absent |
0 |
|
|
present |
2 |
|
end-stage renal disease |
absent |
0 |
|
|
present |
4 |
|
tissue loss |
absent |
0 |
|
|
present |
2 |
|
poor runoff |
absent |
0 |
|
|
present |
2 |
total score =
= SUM(points for all 5 parameters)
Interpretation:
• minimum score: 0
• maximum score: 11
• The higher the score the lower the amputation-free survival.
|
Score |
5-Year AFS |
Risk Group |
|
0 |
80% |
low |
|
1 or 2 |
62-63% |
low |
|
3 or 4 |
44-45% |
medium |
|
5 |
26% |
high |
|
6 or 7 |
19-22% |
high |
|
8 |
13% |
high |
|
9 or more |
0 |
high |
Specialty: Cardiology
