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

Table 3 Variables influencing MAP.

	Bivariable model^a P value	Multivariable model^b P value
HBE	<0.001	<0.001
SAPS II	0.023	n.s.
Norepinephrine (μg/kg/min)	0.012	n.s.
*NorepinephrineHBE**	0.005	0.005
Ventilation mode	<0.001	<0.001
Sedation sufentanil (μg/kg/min)	0.027	n.s.
Sedation propofol (mg/kg/min)	0.034	n.s.

^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; SAPS II, Simplified Acute Physiology Score.

ISSN: 1364-8535