Green Initiatives at Trillium Health Partners - Mitigating Nitrous Oxide

Nitrous oxide, also known as laughing gas, is used in hospitals as an anesthetic and pain reliever. But, the gas is very harmful to the environment.
Dr. Anita Rao, an anesthesiologist at THP, explains how we're mitigating the use of the medical gas and changing the way we deliver it to patients to make our hospitals greener.

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Have you considered switching from nitrous oxide to xenon gas, perhaps with a rebreather circuit?
Iirc xenon is just as strong a pain killer, but not a ozone depleter.