Table 3.

Daily net fluid balance for patients on RRT (n=48)

Day of ECMO	Net UF on RRT Mean (SD) in L	Net I-O Not Yet on RRT Mean (SD) in L	Mean Difference in L	P Value
1	1.4 (3.1) (n=28)	7.4 (15.1) (n=20)	−6.0	0.02
2	3.5 (5.6) (n=32)	3.5 (4.0) (n=15)	0.0	0.50
3	1.7 (3.2) (n=34)	1.6 (6.8) (n=11)	0.1	0.53
4	0.6 (2.1) (n=36)	0.4 (0.8) (n=9)	0.2	0.61
5	2.3 (4.8) (n=34)	2.0 (6.0) (n=8)	0.3	0.60
6	0.6 (3.6) (n=32)	1.6 (1.2) (n=6)	−1.0	0.25
7	0.1 (2.1) (n=33)	0.5 (2.7) (n=4)	−0.4	0.36
Cumulative 72 hr	5.5 (7.5)	10.0 (15.9)	−4.5	0.15

ECMO, extracorporeal membrane oxygenation; UF, ultrafiltration; I-O, ins-outs (ins minus outs).