<s>[INST] Dad is 90, mid-stageAlz, on 6th day of Ceftin 500 mg for upper UTI (heisting for 16 years). Out of it this a.m. No fever but O2 at 74% BP 89/62 sitting. Then at 3 pm he gets up from nap & is just fine & normal. This is 5th upper UTI in 6 months - urologist cannot find reason. Low O2 scary today. He is DNR & no extraordinary procedures. What to do? [/INST] THanks for the query O2 of 74% is def a concern. I suggest ECHO and an exray. He might require admission as well. It very hard to assess the person over the pc. Please take him to a doctor Have a healthy living </s>