A client's mixed venous oxygen saturation (SvO2) is 44%. What is the nurse's interpretation of this finding?
A. The client's oxygen supply and oxygen demand are in balance.
B. The client's oxygen supply exceeds the oxygen demand.
C. The client's oxygen demand exceeds the oxygen supply.
D. The client has oxygen toxicity.
C
The mixed venous oxygen saturation value represents the balance between oxygen supply and oxygen demand. The normal range is 60% to 80%. A lower than normal value indicates that ei-ther oxygen demand is excessive or oxygen supply is insufficient. In either case, the current de-mand for oxygen exceeds the current supply.
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