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Table 4 Transfusion data by group (analysis based on “intention to treat”)

From: Monitoring of brain oxygen saturation (INVOS) in a protocol to direct blood transfusions during cardiac surgery: a prospective randomized clinical trial

 

Group A (n = 75)

Group B (n = 75)

P

In OR

   

RBC units transfused

18

40

 

Patients transfused

14 (18.6%)

25 (33.3%)

0.040

RBC per transfused pt

1.29 ± 0.47

1.60 ± 0.58

0.090

RBC/pt overall

0.24 ± 0.54

0.53 ± 0.84

0.011

In the ICU and ward

   

RBC units transfused

98

98

 

Patients transfused

47 (62.6%)

57 (76.0%)

0.076

RBC per transfused pt

2.09 ± 2.05

1.71 ± 1.01

0.239

RBC/pt overall

1.31 ± 1.91

1.31 ± 1.20

1.000

Total

   

RBC units transfused

116

138

 

Patients transfused

51 (68.0%)

63 (84.0%)

0.021

RBC per transfused pt

2.27 ± 2.01

2.19 ± 1.17

0.781

RBC/pt overall

1.55 ± 1.97

1.84 ± 1.41

0.288