Table 3

Crude and adjusted association (logistic regression analysis) between ScVO₂, lactates, and major morbidity and mortality

Major morbidity

Analysis

Factor b

SEM

P value

OR (95% CI)

Crude

ScVO2

-0.136

0.03

0.001

0.87 (0.82-0.93)

Constant

7.6

2.11

Crude

Lactates

0.58

0.14

0.001

1.78 (1.35-2.36)

Constant

-3.57

0.44

Combined

ScVO2

-0.114

0.03

0.001

0.89 (0.84-0.95)

Lactates

0.499

0.16

0.002

1.65 (1.2-2.26)

Constant

4.87

2.28

Adjusted

ScVO2

-0.117

0.03

0.001

0.89 (0.84-0.94)

CPB time

0.01

0.003

0.002

1.01 (1.003-1.02)

Constant

7.6

2.11

Adjusted

Lactates

0.42

0.14

0.004

1.52 (1.15-2.03)

CPB time

0.008

0.003

0.015

1.01 (1.003-1.01)

Constant

-4.1

0.51

Mortality

Analysis

Factor b

SEM

P value

OR (95% CI)

Crude

ScVO2

-0.114

0.03

0.001

0.89 (0.84-0.95)

Constant

4.8

2.16

Crude

Lactates

0.7

0.16

0.001

2 (1.46-2.76)

Constant

-5.2

0.69

Combined

ScVO2

-0.06

0.04

0.158

0.94 (0.87-1.02)

Lactates

0.608

0.18

0.001

1.84 (1.3-2.61)

Constant

-0.658

3.21

Adjusted

ScVO2

-0.091

0.03

0.01

0.91 (0.85-0.98)

CPB time

0.011

0.004

0.003

1.01 (1.004-1.02)

Constant

1.8

2.5

Adjusted

Lactates

0.56

0.17

0.001

1.75 (1.26-2.42)

CPB time

0.009

0.004

0.032

1.01 (1.003-1.02)

Constant

-5.97

0.87

CI, confidence interval; CPB, cardiopulmonary bypass; OR, odds ratio; ScVO₂, central venous oxygen saturation; SEM, standard error of the mean.

Ranucci et al. Critical Care 2010 14:R149   doi:10.1186/cc9217