I have recently budded heads with an anesthesiologist I work with in PACU. I was told it was fine to discharge a patient with o2 sats in the mid 80's on rm air. this patient had no history of lung disease. she came in with a sat of 97%. upon discharge her lungs had heavy rhonchi through out. the women ended up in the ED 2 days later diagnosed with pneumonia. I have only worked in PACU for less than 2 years and could use some help handling this type of situation in the future. the doctor was advised multiple times of breath sounds and low sats with no orders given. he now complains to others that I do not respect his judgement.