Tissue oxygen saturation as an early indicator of delayed lactate clearance after cardiac surgery: a prospective observational study

Table 3 Uni- and multivariate analysis of parameters associated with lactate clearance at day 1

	Univariate analysis				Multivariate analysis
Factor	Coefficient	95 % Confidence Interval	r	P	Coefficient	95 % Confidence Interval	r	P
Minimum StO₂	0.065	0.024 – 0.105	0.46	<0.01	0.053	0.013 – 0.094	0.46	<0.05
Minimum cardiac index	0.851	0.208 – 1.494	0.40	<0.05	0.637	0.020 – 1.254	0.40	<0.05
Minimum S_vO₂	0.014	−0.015 – 0.044	0.16	n. s.
Minimum mean arterial pressure	−0.004	−0.039 – 0.030	−0.04	n. s.
Overall							0.55	<0.01

Minimum values of StO₂, cardiac index, SvO₂ and mean arterial pressure calculated from values at T0, T1, T4 and Td1

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