Description

Shehata et al identified risk factors associated with the need to transfuse blood in a patient undergoing coronary artery bypass graft surgery. These can help to identify a patient who may benefit from blood conservation during and after surgery. The authors are from St. Michael's Hospital in Toronto, Ontario, Canada.


 

Parameters known prior to surgery:

(1) age

(2) gender

(3) urgency for the surgery

(4) preoperative hemoglobin

Parameter

Finding

Points

age

not older

0

 

older

1

gender

male

0

 

female

1

urgency of surgery

elective

0

 

urgent or emergent

1

preoperative hemoglobin

normal

0

 

anemia

1

 

number of risk factors for blood transfusion =

= SUM(points for all 4 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 4

• The higher the score the more likely that the patient will need a blood transfusion.

 

Additional factors that may impact blood utilization:

(1) excessive blood loss during surgery

(2) redo operation

 


To read more or access our algorithms and calculators, please log in or register.