Result: Based on some parameters of the PiCCO method, after 1st infusion, CI increased from 3.16 ± 1.24l / min / m2 to 4.52 ± 0.87l / min / m2; GEDVI increased from 573.55 ± 169.35ml / m2 to 826.3 ± 246.06ml / m2; SVV decreased from 15.13 ± 7.26% to 13.76 ± 8.65%.