Table 2 Type of surgery, physiologic status, and fluid administered during the surgical procedure

Type of surgery

   Upper gastrointestinal

4

4

   Hepato-biliary

2

3

   Lower gastrointestinal

8

10

   Urology

1

0

   Other

1

0

Respiratory settings

   Tidal volume (ml/kg)

9.1 ± 0.5

8.6 ± 0.6

   Ventilatory frequency (/min)

13 ± 1

13 ± 1

Physiologic status at start of surgery

   Heart rate (/min)

66 ± 9

77 ± 17

   Mean arterial pressure (mmHg)

96 ± 16

90 ± 18

   SpO₂(percentage)

97 ± 3

97 ± 3

   ΔPP (percentage)

22 ± 7

   Hemoglobin (g/dl)

11.3 ± 2.0

11.9 ± 2.5

Physiologic status at end of surgery

   Heart rate (/min)

86 ± 19

80 ± 17

   Mean arterial pressure (mmHg)

68 ± 20

78 ± 14

   SpO₂ (percentage)

97 ± 3

97 ± 3

   ΔPP (percentage)

9 ± 1^a

   Hemoglobin (g/dl)

9.8 ± 1.4

9.6 ± 1.6

Fluid administered

   Volume of crystalloid infused (ml)

1,563 ± 602

2,176 ± 1,060

   Volume of colloid infused (ml)

0

2,247 ± 697^b

   Volume of red blood cells infused (ml)

131 ± 268

159 ± 320

   Number of patients who received red blood cells

4

5

   Volume of FFP infused (ml)

0

35 ± 106

   Number of patients who received FFP

0

2

   Total volume infused (ml)

1,694 ± 705

4,618 ± 1,557^b

   Total volume infused (ml/kg per hour)

7 ± 2

21 ± 8^b

Duration of surgery (hours)

3.7 ± 1.4

3.9 ± 2.0