Smith et al reported the ISAN score for evaluating a stroke patient for the risk of pneumonia during acute stroke care. The authors are from multiple institutions in England and Germany participating in the Intercollegiate Stroke Working Party Group.
ISAN is an acronym for independence, sex, age, NIHSS
Patient selection: acute stroke
Parameters:
(1) age in years
(2) sex
(3) NIHSS on admission
(4) modified Rankin scale prestroke (independent vs not)
Parameter
Finding
Points
age in years
< 60 years
0
60 to 69 years
3
70 to 79 years
4
80 to 89 years
6
>= 90 years
8
sex
female
0
male
1
NIHSS
<= 4
0
5 to 15
4
16 to 20
8
>= 21
10
independent prestroke
yes
0
no
2
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 21
Total Score
Pneumonia Risk
<= 5
low
6 to 10
medium
11 to 14
high
>= 15
very high
Performance:
• The area under the ROC curve is 0.79.
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