Al-Khabori et al developed a simple score for predicting perioperative red blood cell transfusion in patients undergoing cardiac surgery. The authors are from Sultan Qaboos University Hospital in Muscat, Oman.
Patient selection: cardiac surgery
Outcome: red blood cell transfusion
Parameters:
(1) gender
(2) age in years
(3) antiplatelet drug (aspirin, clopidogril) used within 7 days of surgery
(4) timing of surgery (elective or not)
(5) hematocrit in percent
(6) glucose 6-phosphate dehydrogenase (G6PD) deficiency
(7) cardiopulmonary bypass
(8) cerebrovascular disease
(9) diabetes mellitus
Parameter |
Finding |
Points |
---|---|---|
gender |
male |
-2 |
|
female |
0 |
age in years |
<= 60 years of age |
0 |
|
> 60 years of age |
1 |
antiplatelet drug used within 7 days |
no |
0 |
|
yes |
3 |
timing of surgery |
elective |
0 |
|
non-elective |
2 |
hematocrit |
>= 35% |
0 |
|
< 35% |
2 |
G6PD deficiency |
absent |
0 |
|
present |
2 |
cardiopulmonary bypass |
no |
0 |
|
yes |
2 |
cerebrovascular disease |
no |
0 |
|
yes |
4 |
diabetes mellitus |
no |
0 |
|
yes |
1 |
total score =
= SUM(points for all 9 parameters)
Interpretation:
• minimum score: -2
• maximum score: 17
• The higher the score the greater the risk of RBC transfusion.
Score |
RBC Transfusion |
---|---|
< 2 |
42% |
2 to 5 |
63% |
> 5 |
91% |
Specialty: Clinical Laboratory, Surgery, general, Anesthesiology, Emergency Medicine, Critical Care