Serum vascular endothelial growth factor affects tissue fluid accumulation and is associated with deteriorating tissue perfusion and oxygenation in severe sepsis: a prospective observational study

Table 2 Comparisons of the relative tissue concentrations of hemoglobin and water and tissue hemoglobin oxygen saturation between oliguric and non-oliguric patients

Measures	Days	Oliguric patients			Non-oliguric patients
Measures	Days	Mean (SD)	95% CI	n	Mean (SD)	95% CI	n
[HbO₂] (a.u)	1	0.194 (0.012)	0.188–0.200	17	0.202 (0.010)	0.199–0.204	58
	2	0.194 (0.012)	0.188–0.200	17	0.196 (0.024)	0.190–0.203	56
	3	0.175 (0.032)	0.153–0.196	11	0.196 (0.023)	0.190–0.203	51
[HbR] (a.u)	1	0.220 (0.015)	0.213–0.228	17	0.224 (0.017)	0.219–0.228	58
	2	0.219 (0.019)	0.209–0.228	17	0.231 (0.035)	0.221–0.240	56
	3	0.239 (0.057)	0.200–0.277	11	0.231 (0.039)	0.220–0.242	51
[HbT] (a.u)	1	0.414 (0.020)	0.404–0.425	17	0.425 (0.022)	0.420–0.431	58
	2	0.413 (0.028)	0.399–0.427	17	0.427 (0.023)	0.421–0.433	56
	3	0.414 (0.033)	0.392–0.436	11	0.427 (0.024)	0.421–0.434	51
StO₂ (%)	1	46.80 (2.06)	45.74–47.86	17	47.42 (1.96)	46.90–47.93	58
	2	47.10 (1.67)	46.24–47.96	17	46.15 (6.00)	44.54–47.76	56
	3	42.77 (9.15)	36.62–48.92	11	46.20 (6.25)	44.44–47.95	51
[H₂O] (a.u)	1	10.29 (2.43)	9.04–11.54	17	10.53 (3.50)	9.60–11.45	58
	2	9.87 (3.82)	7.90–11.84	17	10.73 (3.34)	9.83–11.62	56
	3	12.61 (4.71)	9.45–15.78	11	10.39 (3.04)	9.54–11.24	51

a.u., arbitrary unit; SD: standard deviation; CI: confidence interval; [HbO₂]: relative tissue concentration of oxy-hemoglobin; [HbR]: relative tissue concentration of deoxy-hemoglobin; [HbT]: relative tissue concentration of total hemoglobin; StO₂: tissue hemoglobin oxygen saturation; [H₂O]: relative tissue concentration of H₂O

ISSN: 2047-783X