Heart & lung : the journal of critical care
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To evaluate changes in oxygenation as measured by pulse oximetry (SpO2) and saturated venous oxygenation (SvO2) during weaning from mechanical ventilator support. ⋯ Measures of SpO2 and SvO2 are sensitive to changes in oxygenation status during weaning. Although more study is needed, SvO2 measures provide valid information about oxygen status and can be used to guide weaning.