Anzuategui et al reported a simple risk model for patients undergoing surgery for spinal metastases. The authors are from Universidade Federal do Parana and Hospital Erasto Gaertner in Brazil.
Patient selection: surgical candidate for spinal metastasis
Parameters:
(1) number of significant comorbid conditions (out of 16)
(2) growth rate of the underlying malignancy
(3) absolute lymphocyte count per microliter
Parameter
Finding
Points
comorbid conditions
0
0
>= 1
1
tumor growth rate
slow
0
intermediate or fast
1
absolute lymphocyte count
>= 1,000 per µL
0
< 1,000 per µL
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 3
• The higher the score the greater the risk of postoperative morbidity and mortality.
Score
Risk Category
90-Day Mortality
0
low
18%
1
moderate
45%
2
high
64%
3
extreme
100%
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