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Table 2 Haemodynamic variables

From: The effects of passive leg raising may be detected by the plethysmographic oxygen saturation signal in critically ill patients

  Baseline 1 PLR test Baseline 2 After volume expansion
Heart rate (beats/min)
 • Positive PLR test (n = 34) 94 ± 16 95 ± 20 97 ± 17 93 ± 15
 • Negative PLR test (n = 38) 90 ± 20 89 ± 20 88 ± 20
Systolic arterial pressure (mmHg)
 • Positive PLR test (n = 34) 115 ± 23 128 ± 29* 112 ± 28 122 ± 34
 • Negative PLR test (n = 38) 125 ± 20 130 ± 21* 123 ± 20
Diastolic arterial pressure (mmHg)
 • Positive PLR test (n = 34) 58 ± 11 63 ± 10* 57 ± 13 61 ± 15
 • Negative PLR test (n = 38) 60 ± 9 63 ± 9* 59 ± 9
Mean arterial pressure (mmHg)
 • Positive PLR test (n = 34) 77 ± 13 87 ± 21* 75 ± 17 80 ± 19
 • Negative PLR test (n = 38) 81 ± 12 85 ± 13* 80 ± 12
Central venous pressure (mmHg)
 • Positive PLR test (n = 34) 10 ± 5 13 ± 5* 10 ± 4 11 ± 5
 • Negative PLR test (n = 38) 10 ± 5 14 ± 5* 9 ± 5
Cardiac index (L/min/m2)
 • Positive PLR test (n = 34) 3.38 ± 1.21 4.03 ± 1.31* 3.20 ± 1.20 4.02 ± 1.35
 • Negative PLR test (n = 38) 3.19 ± 1.26 3.26 ± 1.32*¨ 3.15 ± 1.31
GEDV (mL/m2)
 • Positive PLR test (n = 34) 766 ± 165   768 ± 205 789 ± 127
 • Negative PLR test (n = 38) 800 ± 242   792 ± 219
SVI (mL/m2)
 • Positive PLR test (n = 34) 37 ± 13 44 ± 15* 36 ± 12 43 ± 15
 • Negative PLR test (n = 38) 37 ± 15 38 ± 16 37 ± 17
PPV (%)
 • Positive PLR test (n = 28) 10.0 ± 4.0   9.8 ± 5.9 11.9 ± 16.2
 • Negative PLR test (n = 28) 8.0 ± 5.1   8.5 ± 4.7
PI (%)
 • Positive PLR test (n = 34) 2.9 ± 2.0 4.1 ± 2.3* 2.1 ± 1.4 3.0 ± 1.9
 • Negative PLR test (n = 38) 2.0 ± 1.8 2.0 ± 2.0¨ 2.1 ± 1.9
  1. Values are expressed as mean ± standard deviation
  2. PLR passive leg raising test, GEDV global end-diastolic volume, SVI stroke volume index, PPV pulse pressure variation, PI perfusion index
  3. *p < 0.05 vs baseline 1
  4. p < 0.05 vs baseline 2
  5. ¨p < 0.05 between positive and negative PLR test
  6. In mechanically ventilated patients