Carmo et al reported the Pneumonia Shock Score for evaluating a patient with pneumonia being admitted to the Intensive Care Unit (ICU). This can help to identify a patient who is more likely to die in the ICU. The authors are from multiple institutions in Brazil and the University of California at San Diego.
Patient selection: patient with pneumonia being admitted to the ICU
Outcome: death in the ICU
Parameters:
(1) age in years
(2) heart rate in beats per minute
(3) hematocrit percent
(4) white blood cell count per microliter
(5) serum sodium in mmol/L
(6) FIO2
(7) use of vasopressors
(8) Glasgow coma scale (used to measure obtundation)
Parameter
Finding
Points
age in years
< 75 years
0
>= 75 years
2
heart rate
< 110 beats per minute
0
>= 110 beats per minute
1
hematocrit
> 38%
0
<= 38%
1
WBC count
< 15,000 per µL
0
>= 15,000 per µL
1
serum sodium
< 145 mmol/L
0
>= 145 mmol/L
1
FIO2
< 30%
0
>= 30%
1
use of vasopressors
no
0
yes
2
Glasgow coma scale
15
0
< 15
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 10
• The mortality rate for a score of 0 to 2 was 9.3%
• The mortality rate for a score >= 3 was > 26%.
Performance:
• The area under the ROC curve is 0.80.
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