Table 2. Hemodynamic parameters before fluid bolus

	All (n = 84)	Responders (n = 30)	Non-responders (n = 54)	P
HR (bpm)	114.5 ± 22.3	118.7 ± 21.8	112.1 ± 22.5	0.197+
CVP (mmHg)	8.5 ± 3.7	7.3 ± 3.4	9.2 ± 3.6	0.018+
MAP (mmHg)	74.2 ± 13.4	75.1 ± 14.2	73.7 ± 13.0	0.641+
SV (ml/beat)	46 (35.5 ; 61.5)	46 (35 ; 58)	46 (36 ; 65)	0.309*
CO (L/min)	5.1 (3.9 ; 6.6)	4.9 (4 ; 6.6)	5.5 (3.7 ; 6.7)	0.863*
SVR (dynes·sec·cm-5)	1056.3 ± 434.9	1117.7 ± 493.9	1054.4 ± 417.2	0.962+

HR: heart rate, CVP: central venous pressure, MAP: mean arterial pressure, SV: stroke volume, CO: cardiac output, SVR: systemic vascular resistance
Student’s t-test
Mann-Whitney U test