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Table 4 Intraoperative and anesthetic data in the two groups

From: The effect of low central venous pressure on hepatic surgical field bleeding and serum lactate in patients undergoing partial hepatectomy: a prospective randomized controlled trial

 Group F (n = 69)Group L (n = 70)t or Z valueP value
Duration of all PTC (mins)25.0 (15.5, 37.5)25.5 (15, 34.5)−0.0890.929
Blood transfusion/no blood transfusion (n)4/692/70−0.9370.349
Operation time (mins)189.6 ± 59.6187.8 ± 54.50.9460.861
Urine output (ml)200 (100, 300)200 (100, 250)−0.6370.524
Blood loss (ml)200 (125, 400)200 (150, 425)−0.1330.894
CVP during PTC (mm Hg)4.0 (3, 5)2.5 (1.5, 3.5)−5.064< 0.001*
SBP during PTC (mm Hg)109.6 ± 11.0103.1 ± 10.83.5180.001*
MAP during PTC (mm Hg)78.3 ± 8.774.6 ± 7.62.6300.010*
Frequency of additional fluid infusion (0/1/more than 2) (n)42/19/838/24/8−0.6970.486
Frequency of ephedrine (0/1/2/more than 3) (n)41/12/14/213/20/15/22−5.199< 0.001*
  1. The data are presented as median and interquartile range (M (P25, P75) or mean ± standard deviation or numbers of patients. Group F: the fluid restriction group; Group L: the fluid restriction + low CVP group; CVP Central venous pressure, SBP Systolic blood pressure, PTC Portal trail clamping, MAP Mean arterial pressure.* P < 0.05