Skip to main content

Table 2 Number of units of blood products transfused during surgery and up to the second post-operative day, according to antiplatelet drug prescription before coronary artery bypass graft surgery

From: Increased blood product use among coronary artery bypass patients prescribed preoperative aspirin and clopidogrel

 

Mean (SD) number of units transfused

 

Blood product(s)

None (n = 497)

Aspirin (n = 105)

Clopidogrel (n = 11)

Aspirin plus clopidogrel (n = 46)

Statistical comparison between groups

Packed red blood cells

1.4 (2.0)

1.9 (2.4)

2.9 (3.4)

2.4 (2.3)

P = 0.001

Platelets

1.0 (3.7)

1.3 (3.1)

3.6 (6.0)

3.7 (5.2)

P < 0.001

Fresh frozen plasma

1.6 (2.9)

2.3 (4.4)

2.5 (5.4)

3.1 (5.4)

P = 0.01

Cryoprecipitate

0.6 (4.6)

0.5 (3.2)

1.8 (4.0)

0.6 (3.3)

P = 0.8

Fresh frozen plasma and cryoprecipitate

2.3 (5.8)

2.8 (6.4)

4.4 (7.7)

3.8 (7.5)

P = 0.3

Fresh frozen plasma, cryoprecipitate and platelets

3.3 (8.3)

4.2 (8.8)

8.0 (13.4)

7.5 (11.6)

P = 0.006