Table 1—

Data on oxygen tension in arterial blood of all study groups

Group	BL	LL	15 min	30 min	60 min	90 min	120 min
I	23±3		24±3*	28±1*	30±2*	28±3*	29±3*
II	31±6	70±24^#	77±27^#	76±31^#	83±36^#	84±36^#	70±20^#
III	38±15	47±7^¶	36±10^¶	31±5^¶	33±6^¶	29±5^¶	30±6^¶
IV	47±9	63±8	51±5	49±6	50±4	44±4	44±7
V	37±9	53±13	41±10	46±13	50±12	49±12	48±13

Data is presented as mean±sd
BL: before lavage
LL: repeated lavage with saline to induce lung injury
Group I: sham
Group II: control
Group III: treated with surfactant
Group IV: treated with surfactant suspended in 4:1 saline-iodixanol
Group V: treated with surfactant suspended in 1:1 saline-iodixanol
*: p<0.05 versus Group II, IV and V
^#: p<0.05 versus Group I, III, IV and IV
^¶: p<0.05 versus Group IV and V