Mar 18 2025 18 mins 4
Dr. Liz Hansen takes us behind the scenes of a remarkable transformation at Seattle Children's Hospital, where pediatric anesthesiologists have reduced their greenhouse gas emissions by over 90% without compromising patient safety. A lifelong environmentalist and bike commuter, Dr. Hansen was shocked to discover that anesthesia gases contributed to 7% of her hospital's total emissions. This revelation sparked a personal and professional journey to align her clinical practice with her environmental values.
The conversation reveals practical strategies for reducing anesthesia's carbon footprint, from eliminating nitrous oxide to implementing low-flow techniques. Dr. Hansen shares how her team gradually won over colleagues by demonstrating that sustainable practices could maintain or even improve patient outcomes. She offers detailed insights into working with child life specialists, adapting mask induction techniques, and using data tracking to drive continuous improvement.
What makes this story particularly powerful is the ripple effect beyond a single institution. Dr. Hansen co-founded Project SPRUCE (Saving Our Planet by Reducing Carbon Emissions), an international consortium of anesthesia groups collaborating to reduce their environmental impact. Member organizations have already achieved their first-year goal of 50% emissions reduction, with more ambitious targets on the horizon.
For anesthesia professionals concerned about climate change but unsure how to make a difference, this episode offers hope and concrete action steps. Remember, "the antidote to despair is action." Download the Yale Gassing Greener app, try a nitrous-free induction on your next cooperative patient, or advocate for addressing gas leaks in your facility's central supply system. Your individual choices matter, especially when they inspire others to follow your lead.
For show notes & transcript, visit our episode page at apsf.org: https://www.apsf.org/podcast/246-ditching-nitrous-oxide-the-bike-commuters-guide-to-safe-and-sustainable-anesthesia/
© 2025, The Anesthesia Patient Safety Foundation
