Making anesthesia environmentally sustainable
—As much as 4.4% of global greenhouse gases are caused by the health sector.1 And of the total emissions of hospitals, 2% are due to volatile anesthetics.2 Anesthetic gases have been widely administered during surgery for many years. But volatile anesthetics can also contribute to greenhouse gas emissions and potential climate change.
Considering general anesthetics are administered to approximately 50 million patients each year in the U.S., with a vast majority of those employing halogenated inhalational agents (sevoflurane, desflurane and isoflurane) and non-halogenated agents (nitrous oxide), the impact of inhaled anesthetics pollution is substantial.3 Inhaled anesthetic gases, which are exhausted directly to the atmosphere, are estimated to account for 5% of acute hospital CO2e emissions and 50% of perioperative department emissions in high-income countries.4
With the "Inhaled Anesthetic 2020 Challenge", the American Society of Anesthesiologists (ASA) is calling for a 50% reduction in carbon emissions from anesthetics. The DGAI and the BDA are also addressing the issue. Together they have published a position paper with concrete recommendations for action.
Sources
1. Health Care’s Climate Footprint. Health Care Without Harm
2. NHS Sustainable Development Unit.
3. Waste Anesthetic Gases: Focus on a Major Problem. ASA Monitor
4. Action guidance for addressing pollution from inhalational anaesthetics. Anaesthesia.
Implement low flow anesthesia safely
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One of the central points for saving volatile anesthetics is the consistent implementation of low- or minimal-flow anesthesia. The advantages are clear and not only ecological:
- Reduction of greenhouse gases
- Cost reduction
- Improving clinical outcomes
Information on the clinical background and use of low-flow anesthesia can be found on the following website.
Rebreathing systems in anesthesia
—Clinical practice shows that the use of low- and minimal-flow anesthesia can be safely and easily integrated into daily routine. "The safety and technical performance of today's anesthesia machines make low-flow, minimal-flow and metabolic-flow anesthesia the procedures of choice". This is the conclusion of Bert Mierke, MD, and PD Christian Hönemann, MD, convinced low-flow advocates and authors of the booklet "Low-Flow, Minimal-Flow and Metabolic-Flow Anaesthesias - Clinical Techniques for the Use of Rebreather Systems".
This booklet contains further information and practical tips for the safe use of low flow anesthesia.

Low-flow, minimal-flow and metabolic-flow anesthesia: clinical techniques for the use of rebreathing systems

A sustainable approach to mitigating the environmental impact of inhaled anesthetics
How do we support you?
—As your specialist in critical care, we provide holistic support in the implementation of environmentally conscious anesthesia - from modern anesthesia equipment for the implementation of safe low-flow anesthesia to analysis software for comprehensive analysis of gas consumption and decision support in the procurement of consumables.

Our anesthesia machines support you with advanced technology, e.g., permanently high tightness of the breathing systems, intelligent humidity management, adequate gas and ventilation monitoring, sample gas return, as well as support in the efficient control of anesthesia. To support consistent and efficient fresh gas flow delivery across users, most Dräger anesthesia machines offer our Low Flow Wizard technology. The Low Flow Wizard is an on-screen fresh gas flow efficiency tool which clearly informs users when their fresh gas flow is efficient, too high, or too low. The net goal is to help hospitals standardize the practice of low- and minimal-flow delivery to help reduce costs and their environmental footprint.

Case Study: Significant Cost Savings for Anesthetic Gases
Watch how one hospital was able to reduce anesthetic waste by using the Low Flow Wizard technology. Taking it one step further, anesthetic-rich breathing gas which is continuously sampled for analysis during a case can be returned to the breathing system for ventilation instead of being directly wasted to the atmosphere. It’s just one other way Dräger anesthesia machines are designed to make a positive environmental impact.
Get in Touch With Your Dräger
—
1. Health Care’s Climate Footprint. Health Care Without Harm
2. NHS Sustainable Development Unit.
3. Waste Anesthetic Gases: Focus on a Major Problem. ASA Monitor
4. Action guidance for addressing pollution from inhalational anaesthetics. Anaesthesia.


