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Table 3 Hemodynamic variables

From: Comparison of volume-controlled ventilation mode and pressure-controlled ventilation with volume-guaranteed mode in the prone position during lumbar spine surgery

 

Group

15 min after induction

15 min after positioning

30 min after positioning

Supine at the end

MAP (mmHg)

VCV

89 (80–100)

86 (77–98)

82 (75–90)

106 (88–109)

PCV-VG

92 (71–102)

83 (72–93)

82 (73–94)

91 (80–98)

HR (beats/min)

VCV

78 (65–82)

68 (56–71)†

66 (61–69)†

71 (65–89)

PCV-VG

70 (63–73)

63 (58–69)†

61 (56–67)†

73 (63–93)†

CO (L/min)

VCV

4.7 (3.8–5.7)

4.0 (3.2–4.7)†

4.1 (3.2–4.8)

5.4 (3.7–7.3)

PCV-VG

4.2 (3.7–4.4)

3.6 (3.3–4.0)†

3.7 (3.3–4.2)

4.6 (4.0–5.7)†

CI (L/min/m2)

VCV

2.8 (2.2–3.1)

2.3 (1.9–2.7)†

2.4 (1.7–2.9)

3.2 (2.4–3.3)

PCV-VG

2.4 (2.2–2.6)

2.3 (1.8–2.4)†

2.2 (1.9–2.6)

2.8 (2.4–3.3)†

SV (mL/beat)

VCV

63 (54–75)

56 (46–74)

57 (47–71)

67 (56–84)

PCV-VG

57 (55–65)

59 (51–66)

59 (53–65)

66 (54–78)

SVI (mL/m2/beat)

VCV

37 (32–41)

33 (29–39)

34 (26–40)

38 (32–51)

PCV-VG

34 (32–39)

34 (31–40)

36 (32–40)

39 (32–44)

SVV (%)

VCV

11 (9–14)

12 (10–16)

11 (9–17)

10 (6–13)

PCV-VG

12 (8–14)

13 (10–15)

13 (10–15)

9 (8–15)

  1. MAP mean arterial pressure, HR heart rate, CO cardiac output, CI cardiac index, SV stroke volume, SVI stroke volume index, SVV stroke volume variation, VCV volume controlled ventilation, PCV-VG, pressure controlled ventilation with volume guaranteed
  2. Data are listed as the median (interquartile range)
  3. p < 0.05 compared with 15 min after induction in each group