When caring for a 3-year-old, the nurse notes the child's oxygen saturation while awake is at 90

Choice A rationale Immediately obtaining an arterial blood gas (ABG) is an invasive and painful procedure that is generally reserved for situations where non-invasive assessments are insufficient or when a precise measure of acid-base status is urgently needed. An oxygen saturation of 90. Choice B rationale While an oxygen saturation of 90. Choice C rationale An oxygen saturation of 90. Choice D rationale Administering supplemental oxygen should be considered only after a full assessment confirms the need and the child is symptomatic, and often after attempting non-pharmacological interventions like repositioning. Directly applying oxygen at 2 liters per minute before fully assessing the child is a premature intervention and does not adhere to the standard nursing process of assessment before intervention.