Table 7.

Comparison of patients that received 0, 1, 2, and 3+ units of PRBCs.

	Did Not Receive PRBC Transfusion	Received PRBC Transfusion
Variable	0 Unit Mean (SD) (or Median and Interquartile Range) (n = 60)	1 Unit Mean (SD) (or Median and Interquartile Range) (n = 15)	2 Units Mean (SD) (or Median and Interquartile Range) (n = 10)	3+ Units Mean (SD) (or Median and Interquartile Range) (n = 5)
Sex
Male	48 (80%)	5 (33%)	4 (40%)	1 (20%)
Female	12 (20%)	10 (67%)	6 (60%)	4 (80%)
Age (yr)*	58 (52, 70.5)	60 (53, 78)	65.5 (62, 74)	76 (73, 80)
Weight (kg)	92.3 (15.2)	81.3 (15.0)	77.2 (13.4)	73.2 (7.8)
BSA (m2)	2.06 (0.19)	1.88 (0.17)	1.85 (0.20)	1.80 (0.12)
CPB Prime (mL)*	1550 (1375, 1600)	1400 (1350, 1550)	1325 (1200, 1350)	1350 (1350, 1400)
Pre-CPB volume
mL*	1350 (1100, 1500)	1700 (1200, 1900)	1800 (1500, 2100)	2000 (2000, 2300)
mL/kg	16.1 (5.7)	19.7 (6.3)	24.9 (8.9)	28.5 (6.0)
Hematocrit (%)
Baseline	40.4 (3.4)	37.1 (3.1)	34.7 (4.5)	37.3 (4.0)
On-CPB	26.5 (3.2)	22.0 (2.8)	20.7 (1.5)	19.7 (1.7)
Low CPB	26.2 (3.0)	21.8 (2.7)	20.1 (1.5)	19.2 (1.2)
ICU	29.5 (4.0)	28.3 (3.9)	31.2 (5.6)	30.1 (7.3)
Autotransfusion units*	3 (3, 4)	3 (3, 3)	3 (3, 4)	3 (3, 3)

^*Median (25th percentile, 75th percentile) are presented because of skewness of the data.