Wang et al reported the REMEMBER score for the prediction of mortality of a patient undergoing venoarterial (VA) extracorporeal membrane oxygenation (ECMO) after coronary artery bypass graft (CABG) surgery. The authors are from Capital Medical University (Beijing), University of Toronto, DuPont Hospital for Children (Wilmington) and Columbia University.
Patient selection: status post CABG surgery, on ECMO
Parameters:
(1) age in years
(2) percent stenosis of the left main trunk
(3) inotropic score (worst value in the 6 hours prior to starting ECMO)
(4) serum CK-MB in IU/L
(5) serum creatinine in µmol/L
(6) platelet count in 10^9/L
Parameter
Finding
Points
age
< 54 years
0
54 to 67 years
8
> 67 years
11
stenosis of left main
< 50%
0
>= 50% (left main disease)
7
inotropic score
<=75
0
> 75
5
serum CK-MB
<= 130 IU/L
0
> 130 IU/L
5
serum creatinine
<= 150 µmol/L
0
> 150 µmol/L
7
platelet count
>= 100 * 10^9/L
0
< 100 * 10^9/L
6
total score =
= SUM(points for all 6 parameters)
Interpretation:
• minimum score: 0
• maximum score: 41
• The higher the score the greater the mortality.
Total Score
Risk Class
Mortality
<= 13
I
13%
14 to 19
II
55%
20 to 25
III
70%
>= 26
IV
94%
Performance:
• The area under the ROC curve is 0.85.
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