TABLE 4 ] .

Correlations Between Prebolus Hemodynamic Variables and Change in Cardiac Index After a Fluid Bolus

Prebolus Variable	r2	P Value
Mean arterial pressure	0.0004	.62
HR	0.008	.04
UOP	0.002	.26
CVP	0.004	.15
Cardiac index	0.081	< .0001
PAOP	0.009	.03

CVP = central venous pressure; HR = heart rate. See Table 2 legend for expansion of other abbreviations.