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Table 3 Predictive performances of hemodynamic variables for transfusion of red blood cells during the first six hours of admission

From: Femoral blood gas analysis, another tool to assess hemorrhage severity following trauma: an exploratory prospective study

 

AUC (95% CI)

P

Cutt-off value

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Lactate

0.64 (0.5–0.79)

0.07

1.9 mmol/l

78.6

58.1

62.4

75.3

ΔPCO2 fem

0.71 (0.57–0.96)

0.008

8.1 mmHg

64

71.4

66.2

68.4

SvO2 fem

0.77 (0.64–0.9)

 < 0.001

63%

75

70.4

69.7

75.7

  1. ΔPCO2 fem femoral venous-arterial difference in carbon dioxide pressure. SvO2 fem femoral venous oxygen saturation
  2. NPV negative predictive value. PPV positive predictive value of parameters
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Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine

ISSN: 1757-7241