Intra-operative intravenous fluid restriction reduces perioperative red blood cell transfusion in elective cardiac surgery, especially in transfusion-prone patients: a prospective, randomized controlled trial

Table 8 Hematocrit values and fluid balance by patient group.

HEMATOCRIT VALUES	Group A	Group B
1. Preoperative	40.21 ± 4.42	40.57 ± 3.87
2. After arterial line placement	39.59 ± 4.72	39.04 ± 4.41
3. After anesthesia induction	37.81 ± 4.69	36.44 ± 4.03#
4. After first cardioplegia	21.26 ± 3.49	19.96 ± 3.56#
5. End of CPB	24.53 ± 3.06	24.10 ± 2.30
6. End of operation	27.23 ± 3.20	26.46 ± 2.29
7. 6 hours in the ICU	28.98 ± 3.37	28.34 ± 2.49
8. 12 hours in the ICU	30.30 ± 2.79	30.67 ± 2.60
9. Day of discharge	32.74 ± 2.22	33.13 ± 2.09
FLUID BALANCE
IV fluids (ml) to initiation of CPB	328 ± 157	642 ± 222◇◇
urine (ml) to initiation of CPB	141 ± 106	169 ± 111
fluid balance after 1^st cardioplegia	2058 ± 236	2323 ± 365◇◇
urine (ml) during CPB	822 ± 483	838 ± 378
total urine production (ml)	1455 ± 532	1538 ± 546
use of filter, n (%)	11 (11.0%)	20 (21.7%)##
Overall fluid balance	390 ± 432	667 ± 553 ◇
Calculated erythrocyte volume loss	758 ± 299	903 ± 303##

ISSN: 1749-8090