TABLE 2.

Pre-Bolus Arterial Waveform Measures Stratified by Fluid Response

Variable	All Boluses	Nonresponders	Responders	p
All boluses (n)	490	332	158
Age-normalized HR,a (IQR)	0.60 (–0.05 to 1.20)	0.61 (–0.04 to 1.18)	0.52 (–0.06 to 1.23)	0.69
PPV, % (IQR)	0.14 (0.10–0.20)	0.14 (0.10–0.20)	0.14 (0.10–0.21)	0.90
SVV, % (IQR)	0.12 (0.09–0.17)	0.16 (0.12–0.23)	0.16 (0.12–0.23)	0.77
Eadyn (IQR)	1.18 (1.00–1.35)	1.18 (1.00–1.35)	1.14 (0.99–1.36)	0.72
On mechanical ventilation (n)	285	189	96
Age-normalized HR,a (IQR)	0.53 (–0.08 to 1.08)	0.53 (–0.11 to 1.11)	0.50 (0.02–1.08)	0.86
PPV, % (IQR)	0.13 (0.09–0.19)	0.12 (0.09–0.18)	0.14 (0.10–0.20)	0.28
SVV, % (IQR)	0.11 (0.08–0.16)	0.11 (0.07–0.16)	0.11 (0.09–0.16)	0.19
Eadyn (IQR)	1.18 (1.00–1.36)	1.20 (1.01–1.36)	1.13 (0.99–1.36)	0.74
On vasoactive infusion (n)	56	38	18
Age-normalized HR, (IQR)a	0.59 (0.16–1.30)	0.52 (0.13–1.32)	0.71 (0.31–1.08)	0.94
PPV, % (IQR)	0.15 (0.10–0.22)	0.14 (0.10–0.22)	0.19 (0.12–0.21)	0.38
SVV, % (IQR)	0.13 (0.08–0.19)	0.12 (0.07–0.20)	0.15 (0.11–0.19)	0.45
Eadyn (IQR)	1.21 (1.05–1.32)	1.20 (1.04–1.31)	1.23 (1.08–1.35)	0.45

Ea_dyn = dynamic arterial elastance, HR = heart rate, IQR = interquartile range, PPV = pulse pressure variation, SVV = stroke volume variation.

^aAge-normalized HR presented as number of IQRs above or below a normalized median of zero based on age.

Data are presented as median (IQR).