The effects of the semirecumbent position on hemodynamic status in patients on invasive mechanical ventilation: prospective randomized multivariable analysis

Table 4 Variables influencing ScvO2.

	Bivariable model^a P value	Multivariable model^b P value
HBE	<0.001	0.003
Time of ventilation (h)	n.s.	0.036
*Time of ventilationHBE**	0.035	0.035
Norepinephrine (μg/kg/min)	0.006	0.009
Ventilation mode	n.s.	0.039

^aAll bivariable models include HBE as a factor.
^bThe multivariable model contains all variables with a P value < 0.1.
HBE, head of bed elevation; n.s., not significant; ScvO2, central venous oxygen saturation.

ISSN: 1364-8535