Mortality and morbidity of low-grade red blood cell transfusions in septic patients: a propensity score-matched observational study of a liberal transfusion strategy

Annals of Intensive Care

Table 4 Fluid therapy, first 5 days

Fluids per day	Propensity score-matched groups				P^b
	Control, n = 237		RBC^a, n = 237
	Median	IQR^c	Mediann	IQR
Colloids^d (ml)	342	100–688	357	206–621	0.939
Crystalloids^e (ml)	1200	482–2547	1120	500–2015	0.082
Fluids in, total^f (ml)	3495	2301–4557	3920	3127–4963	< 0.001
Urine output (ml)	1916	429–2772	2295	906–3134	0.005
Total fluid balance^g (ml)	544	0–2066	645	− 100 to 1568	0.765
RBC transfusion (ml)	0	0–0	177	110–291	< 0.001

For patients with ICU stay < 5 days, the mean per day was calculated for the length of stay
^aLow-grade red blood cell transfusion defined as < 670 ml (< 2 units) any of the first 5 days
^bWilcoxon rank sum test
^cInterquartile range
^dDefined as albumin (200 mg/ml), albumin (5 mg/ml), dextran 70 (60 mg/ml) and hydroxyethyl starch (200/0.5 and 130/0.4)
^eCrystalloids represents the sum of NaCl 9 mg/ml and Ringer´s Acetate
^fFluids in, total represents the sum of all enteral and parenteral administered fluids but not RBC transfusions
^gInsensible perspiration and RBC transfusions not included