Desflurane is a common anesthetic used in hospital operating rooms worldwide. It’s also a climate super pollutant. Now, several decades after the drug was first introduced, a growing number of US hospitals have stopped using the anesthetic because of its outsized environmental impact. On January 1, the European Union went a step further, prohibiting its use in all but medically necessary cases.
Desflurane is more than 7,000 times more effective at warming the planet over a 20-year period than carbon dioxide on a pound-for-pound basis. However, curbing its use alone won’t solve climate change. The anesthetic contributes only a small fraction of total global warming, which is driven by far larger volumes of carbon dioxide and methane emissions.
Still, emissions from the drug add up. Approximately 1,000 tons of the gas are vented from hospitals and other health care facilities worldwide each year. The emissions have a near-term climate impact equivalent to the annual greenhouse gas emissions from approximately 1.6 million automobiles.
