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Table 2 The respiratory fluctuations of hemodynamic parameters

From: Non-invasive detection of hypovolemia or fluid responsiveness in spontaneously breathing subjects

 

6/min patterned breathing

15/min patterned breathing

 

Baseline

−20 mmHg

−40 mmHg

Baseline

−20 mmHg

−40 mmHg

RRI (msec) min

767 ± 130

742 ± 130

651 ± 90

823 ± 151

793 ± 164

674 ± 127##§§

max

952 ± 157

950 ± 177

823 ± 151##§§

889 ± 171

848 ± 177*

726 ± 145##§§

delta

185 ± 86

208 ± 103

173 ± 84

65 ± 32

54 ± 24

52 ± 25

SAP (mmHg) min

123 ± 17

117 ± 16

113 ± 11

125 ± 14

122 ± 14

118 ± 11

max

135 ± 18

133 ± 15

131 ± 12§

131 ± 15

128 ± 13

125 ± 11

delta

12 ± 4

16 ± 6**

18 ± 8##

6 ± 2

6 ± 2

7 ± 3#

MAP (mmHg) min

78 ± 12

77 ± 11

78 ± 9

81 ± 11

83 ± 10

86 ± 8

max

87 ± 13

90 ± 10

94 ± 9

85 ± 12

87 ± 10

91 ± 8

delta

9 ± 4

12 ± 5**

15 ± 6##§

3 ± 1

4 ± 1

5 ± 2#

CVP (mmHg) min

2.7 ± 2.4

−0.2 ± 2.3**

−0.7 ± 2.5##

3 ± 2.7

1.5 ± 2.4*

−0.35 ± 2.8##§

max

12 ± 3.1

6.7 ± 2.8**

5.5 ± 2.6##

10 ± 2.8

5.8 ± 2.3**

4.6 ± 2.2##

delta

9.3 ± 1.8

6.9 ± 1.7**

6.2 ± 1.8##

7 ± 2.2

4.4 ± 1.5**

4.9 ± 1.7#

PP (mmHg) min

60 ± 10

52 ± 10*

44 ± 5

60 ± 7

53 ± 8**

43 ± 7##§§

max

68 ± 11

61 ± 11**

53 ± 7##§§

64 ± 7

57 ± 8**

49 ± 7##§§

delta

8 ± 4

9 ± 4

10 ± 4

4 ± 1

4 ± 2

5 ± 2

SV (ml) min

72 ± 11

55 ± 10**

42 ± 6##§§

70 ± 10

55 ± 9**

43 ± 6##§§

max

85 ± 13

67 ± 14**

55 ± 10##§§

79 ± 12

64 ± 11**

50 ± 7##§§

delta

12 ± 5

13 ± 8

14 ± 8

9 ± 4

8 ± 4

7 ± 3

  1. The data for RRI, SAP, MAP, CVP, PP and SV were calculated from 1 minute recordings (so from 6 and 15 respiratory cycles), during mild and moderate central hypovolemia and at 6/min and 15/min patterned breathing and are given as mean ± SD.
  2. *baseline vs. -20 mmHg, p < 0.05.
  3. **baseline vs. -20 mmHg, p < 0.001.
  4. #baseline vs. -40 mmHg, p < 0.05.
  5. ##baseline vs. -40 mmHg, p < 0.001.
  6. §-20 vs −40 mmHg, p < 0.05.
  7. §§-20 vs −40 mmHg, p < 0.001.