Abstract: The invention relates to a computer implemented method, and a data processing system, for providing decision support in relation to a patient receiving oxygen treatment, the patient having a medical condition requiring a supplemental oxygen device providing an oxygen flow, wherein the decision support assists a health care person in adjusting the oxygen flow from said supplemental oxygen device to the patient, and wherein the decision support uses an arterial oxygenation value to calculate whether the oxygen flow to the patient is sufficient based on a desired input from the health care person.

Abstract: The present invention relates to a method for identification of tissue hypoxia from measurements of acid-base and oxygenation status from venous and/or arterial blood.

Abstract: The present invention relates to method for providing values of measured and/or estimated arterial oxygenation (SO2AM, SO2AE, SpO2) based on measuring values of blood acid/base status in a venous blood sample (VBGM, VBGE). A conversion of the venous blood values is made by applying a mathematical model for deriving blood acid/base status and oxygenation status into estimated or predicted arterial blood values (ABGP). Furthermore, if a value of measured and/or estimated arterial oxygenation value is below a corresponding venous oxygenation value, then estimating the arterial oxygenation value is made with a replacement value being a function of the corresponding venous oxygenation value. The advantage is that converting venous blood value to arterial blood values will be possible by providing arterialized blood gas and acid-base values for a higher percentage of clinical samples previously not possible.