chооse аll thаt аpply 60 year оld male patient arrives in ED with Increased WOB Barrel chest , has been diagnosed with COPD, coughing up yellow/green x 3 days 40 year pack history wears 2 LPM NC at home Vitals on 5 LPM NC SPO2 97% Heart rate 115 RR 28 BS dim throughout, course in bases bilaterally Temp 39 degrees C ABG on 5 LPM NC pH 7.30 PCO2 80 PO2 90 HCO3 30 SO2 97 BE 2.7