An arterial blood gas should be done to confirm pulse oximetry findings less than a minimum of _____________
a. 60%
b. 70%
c. 80%
d. 90%
ANS: C
When a patient's oxygen saturation measured by pulse oximeter (SpO2) is less than 80% an arteri-al blood gas should be drawn to confirm the patient's oxygenation status because a pulse oxime-ter is generally accurate for oxygen saturations greater than 80%.
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