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Eliminating laughing gas leaks cover image

Eliminating laughing gas leaks

MitigationScope 1🏥Building🏥Anaesthesia
Game ChangerGame Changer (>100 tCO₂e per hospital or >3 tCO₂e per primary practice)
Climate Impact
350+ tCO₂e
Absolute GHG Reduction
🛢️ Equivalent to at least 802 barrels of oil per year for every 300-bed hospital
Local Impact39,000+ tCO₂e/yr
National Impact105,000+ tCO₂e/yr
Financial Impact
ImplicationsLow Saving ($0-$25,000)
SavingsCA$3,764
MethodologyAnnually
ROIImmediate
Implementation Feasibility
Investment
Medium
Team Size
Large team
Timeline
6–12 months
The Problem

Nitrous oxide, or laughing gas, has a high global warming potential at 273x more than carbon dioxide. Centralized distribution of nitrous oxide in hospitals results in significant leakage with some audits suggesting 95% of gas is lost prior to reaching patients.

The Solution

Transitioning to point-of-care nitrous oxide cylinders reduces leakages, minimizes safety risks, and saves cost associated with lost product and system maintenance.

Choosing Wisely Canada logo

This solution is featured by Choosing Wisely Canada

Don’t use nitrous oxide for general anesthesia.

Nitrous oxide is an important greenhouse gas in the atmosphere and a significant contributor to stratospheric ozone layer depletion. The use of nitrous oxide as a general anesthetic offers no clinical benefit to the patient and has been clearly demonstrated to increase postoperative nausea and vomiting. In addition, anesthesia care providers should advocate for the decommissioning of centralized nitrous oxide distribution systems. These systems are costly to install and maintain. Central systems leak at many points along the distribution path such as at pipeline fittings, valves, wall outlets and manifolds, greatly increasing nitrous oxide purchasing costs, greenhouse gas emissions and potentially impacting air quality in health care facilities. Canadian hospitals have consistently demonstrated leakage rates of up to 99% PRIOR to the point of care. Centralized nitrous oxide distribution systems are both environmentally and economically inefficient and should be eliminated.

Canadian Coalition for Green Health Care logo

This solution is featured by the Canadian Coalition for Green Health Care

Learn more about this solution in the Coalition's Green Health Care Guidebook.

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References & Evidence
CASCADES' Anesthetic Gases Primer
Reference document
Dr Jody Sherman: "It’s Time Hospitals Abandon Nitrous Oxide Pipes"
Reference document
Canadian Anaesthesiologists' Society Position Statement— Greening the OR: CAS Position Statement on Reducing Harmful Emissions, Waste and Costs
Reference document
Suggest a resource
Toolkit
Nix the Nitroux Toolkit
Tool / Resource
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