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Table 2 Hemodynamic and respiratory variables at three postures whatever respiratory resistor(s) applied

From: Can a central blood volume deficit be detected by systolic pressure variation during spontaneous breathing?

 

Supine position

Head-up tilt

Head-down tilt

Cardiac output (L/min)

5.8 ± 2.9

4.0 ± 1.8*

5.1 ± 2.2*

Stroke Volume (mL)

91 ± 46

55 ± 24*

81 ± 36*

Systolic blood pressure (mmHg)

127 ± 14

121 ± 13*

120 ± 11*

Diastolic blood pressure (mmHg)

64 ± 7

69 ± 6*

65 ± 6

Heart rate (min−1)

65 ± 11

75 ± 13*

65 ± 11

Respiratory rate (min−1)

10 ± 4

10 ± 4

10 ± 3

Central venous oxygen saturation

0.79 ± 0.07

0.68 ± 0.13

0.79 ± 0.09

Ph

7.43 ± 0.03

7.45 ± 0.04*

7.44 ± 0.04

Oxygen partial pressure (kPa)

14.1 ± 1.6

14.3 ± 1.0

14.7 ± 1.6*

Carbondioxid partial pressure (kPa)

5.0 ± 0.6

4.6 ± 0.7*

4.8 ± 0.7*

  1. Values are mean ± standard deviation. *P < 0.05 compared to the supine position
  2. There was no interaction between position and application of resistors
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BMC Anesthesiology

ISSN: 1471-2253

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