Effect of one-lung ventilation on the correlation between left and right cerebral saturation

BMC Anesthesiology

Table 2 Pearson’s correlation coefficients between bilateral SctO₂ at fixed time points

Variables	Baseline	Minutes after OLV start				Minutes after OLV end
	T0	T1	T2	T3	T4	T5	T6	T7
		5 min	10 min	15 min	30 min	5 min	10 min	15 min
Left SctO₂, % Mean ± SD	70.5 ± 5.4	73.7 ± 8.4	72.9 ± 8.3	72.0 ± 8.7	70.9 ± 8.9	73.4 ± 8.2	73.6 ± 8.0	73.6 ± 8.3
Right SctO₂, %, Mean ± SD	69.5 ± 4.8	73.2 ± 8.2	71.2 ± 7.4	70.4 ± 7.5	68.9 ± 7.4	72.0 ± 7.1	72.6 ± 7.1	73.1 ± 7.0
Pearson’s correlation coefficient ^a	0.690	0.385	0.408	0.414	0.383	0.361	0.359	0.422
P	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
Linear regression analysis coefficient ^b	0.805	0.391	0.371	0.378	0.323	0.361	0.246	0.368
P	< 0.001	< 0.001	< 0.001	< 0.001	0.001	< 0.001	0.016	< 0.001

SctO₂ Cerebral tissue oxygen saturation, SD Standard deviation, IQR Interquartile range, OLV One-lung ventilation
^a Pearson correlation analysis was firstly used to investigate the relationship between left and right cerebral tissue oxygenation
^b Linear regression analysis was used to investigate the correlation between bilateral SctO₂ after adjustment for comorbidities (age, diabetes, hypertension) and parameters at measurements (mean arterial blood pressure, peripheral pulse oxygenation, and end-tidal carbon dioxide)

ISSN: 1471-2253