On Scene, a Confused 68-Year-Old Female with Possible Stroke Has

Multiple Choice

On scene, a confused 68-year-old female with possible stroke has an SpO₂ of 91% on room air. Which one of the following indicates the most appropriate and beneficial type of oxygen therapy for this patient?

A) SpO₂ 98% with 12 lpm O₂ via nonrebreather
B) SpO₂ 95% with 2 lpm O₂ via nasal cannula
C) SpO₂ 100% with 15 lpm O₂ via nonrebreather
D) SpO₂ 97% with 4 lpm O₂ via nasal cannula