Table 2 Intervention data, fluid balance and laboratory outcome

Length of the procedure (min)

110 (100–120)

105 (90–118)

100 (85–113)

0.06

MAP before anesthesia (mmHg)

119 (15)

113 (17)

114 (19)

0.31

MAP end of procedure (mmHg)

118 (14)

105 (12)^bc

103 (18)^bc

<0.001

HR before anesthesia (beats per minute)

73 (10)

72 (11)

68 (13)

0.20

HR end of procedure (beats per minute)

74 (14)

78 (16)^c

77 (14)^c

0.34

PPV after induction

N/A

7.9 (4.2) %

8.9 (4.5) %

0.36

PPV end of procedure

N/A

7.2 (2.4) %

8.2 (3.8) %

0.15

Hypotensive periods intraoperatively

3 (1–5)

2 (1–4)

2 (0–4)

0.09

Ephedrin (number of interventions)

2 (0–3)

0 (0–1)^b

0 (0–1)^b

<0.001

Ephedrin (dose - mg)

10 (0–15)

0 (0–10)

0 (0–10)

0.11

Hemoglobin before anesthesia (g/l)

136 (11)

121 (12) ^ab

131 (14)

<0.001

Hemoglobin end of procedure (g/l)

117 (15)

110 (13) ^ab

118 (16)

0.03

Lactate end of procedure (mmol/l)

N/A

1.2 (0.4)

1.2 (0.6)

0.99

Blood loss (ml)

500 (300–575)

500 (300–600)

400 (300–600)

0.77

Maintenance fluids (crystalloid) (ml)

1500 (1200–1500)

700 (600–750)^b

750 (600–900)^b

<0.001

Bolus fluids (colloid) (ml)

0 (0–500)

440 (100–500)^b

400 (0–500)^b

0.01

Patients receiving transfusion

5 (13 %)

3 (8 %)

1 (3 %)

0.24

Number of packed blood cells transfused

0 (0–0)

0 (0–0)

0 (0–0)

0.26

Blood loss (ml)

735 (400–805)

470 (390–840)

500 (380–678)

0.42

Diuresis (ml)

1300 (1025–1625)

1000 (785–1378)^b

1075 (900–1300)^b

0.01

Crystalloids (ml)

2525 (2300–2800)

2800 (2300–3150)

2700 (2350–3125)

0.27

Colloids (ml)

0 (0–0)

0 (0–0)

0 (0–0)

0.70

Patients receiving transfusion

17 (43 %)

11 (28 %)

4 (10 %)^b

0.01

Number of packed blood cells transfused

0 (0–2)

0 (0–2)

0 (0–0)^b

0.01

Hemoglobin (24 h) (g/l)

105 (10)

102 (12) ^a

110 (14) ^a

0.01

Lactate (24 h) (mmol/l)

N/A

1.6 (0.8)

1.7 (0.8)

0.67