My father, aged 68, is currently hospitalized and is diagnosed with blood infection, non-cardiac pulmonary edema and severe back pain upon jerks or postural change. He has been cleared of myeloma. His MRI, x-rays and pet Scan showsabnormal contrast on two spinal vertebrae. Doctor is suspecting Spine TB though the Biopsy is still awaiting. However, prelim reports from the Biopsy lab shows no trace of TB though. He has been on antibiotics for 5 days now (meropenem) and he has shown very good improvement so far (including decrease in the back pain). However, I want to know how long it could take before he would be able to hold blood oxygen levels again. Currently he needs 2-3 Litre for saturation. Does it need some more medication to get that level and can we bring him home? Hospital seems to be delaying things to extract continuous money. About his Spine condition, what else could happen? Could it be some simple inflammation as he never had any back pain before?