It has been shown that early central venous oxygen saturation (ScvO 2)-guided optimization of hemodynamics can improve outcome in septic patients. The early ScvO 2 profile of other patient groups is unknown. The aim of this study was to characterize unplanned admissions in a multidisciplinary intensive care unit (ICU) with respect to ScvO 2 and outcome.
Ninety-eight consecutive unplanned admissions to a multidisciplinary ICU (median age 63 [range 19 to 83] years, median Simplified Acute Physiology Score [SAPS II] 43 [range 11 to 92]) with a clinical indication for a central venous catheter were included in the study. ScvO 2 was assessed at ICU arrival and six hours later but was not used to guide treatment. Length of stay in ICU (LOS ICU) and in hospital (LOS hospital) and 28-day mortality were recorded.
ScvO 2 was 70% ± 12% (mean ± standard deviation) at admission and 71% ± 10% six hours later ( p = 0.484). Overall 28-day mortality was 18%, LOS ICU was 3 (1 to 28) days, and LOS hospital was 19 (1 to 28) days. Patients with an ScvO 2 of less than 60% at admission had higher mortality than patients with an ScvO 2 of more than 60% (29% versus 17%, p < 0.05). Changes in ScvO 2 during the first six hours were not predictive of LOS ICU, LOS hospital, or mortality.