Dear Slip, Nitrous is not outdated and is dangerous if patient is left alone in the procedure room. Nitrous is to be mixed with Oxygen when given, monitoring by staff, and when the dentist is finished working, the nitrous is turned off and 100% oxygen is given. I have been receiving Nitrous in NY for the past 20 years. Just an FYI, Nitrous is used by anesthesiologists in the OR. I am knowledgeable about anesthesia as I have been a PACU/Recovery Room RN for over 20 years.
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