Table 2.

Baseline mean cardiac output and median carotid ultrasound parameters (corrected flow time and blood flow) pre- and post-passive leg raise

Parameter	Pre-passive leg raise median (interquartile range)	Post-passive leg raise median (interquartile range)	p value
Mean cardiac output ± standard deviation (SD) (L/min)	5.15 ± 1.58	5.19 ± 1.58	0.69
Corrected flow time (single waveform in milliseconds)	331.7 (308.6–357.8)	344.2 (321.6–360.6)	0.06
Corrected flow time (average of three waveforms in milliseconds)	335.2 (311.0–359.3)	339.6 (322.1–368.9)	0.13
Blood flow (single waveform in mL/min)	576.3 (389.5–806.9)	551.77 (441.5–763.5)	0.45
Blood flow (average of three waveforms in mL/min)	555.4 (422.1–766.6)	558.3 (452.7–741.6)	0.45