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

From: Goal-directed fluid management based on pulse pressure variation monitoring during high-risk surgery: a pilot randomized controlled trial

Parameter Group
  C (n = 16) I (n = 17)
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 ± 1a
   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 ± 697b
   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 ± 1,557b
   Total volume infused (ml/kg per hour) 7 ± 2 21 ± 8b
Duration of surgery (hours) 3.7 ± 1.4 3.9 ± 2.0
  1. SpO2, percutaneous arterial oxygen saturation; ΔPP, variation in arterial pulse pressure; FFP, fresh frozen plasma; C, control; I, intervention. aP < 0.05, end of surgery versus start of surgery; bP < 0.0001, control group versus intervention group.