Climate Impact of Laryngeal Masks: Climate and Other Environmental Impacts of Reusable and Single‐Use Laryngeal Masks in Sweden
Authors' conclusion
The Aura40 reusable laryngeal mask constitutes an opportunity to reduce the climate impact of anaesthesia in a setting with a low-climate-impact electricity mix. Among single-use options, the AuraStraight had a lower climate impact than the Igel+.
Study context
- Population
- Laryngeal masks used at Helsingborg Hospital, Sweden
- Comparison
- Reusable Ambu Aura40 vs single-use Ambu AuraStraight and Intersurgical Igel+ LMA
- Outcome
- Climate impact per use (CO2e over 100 years)
Methodological detailsReCiPe2016 method, 40 reuses assumed, sensitivity analyses, Data from manufacturers, ecoinvent database v3.10 and Helsingborg Hospital, Sweden
- ReCiPe2016 method
- 40 reuses assumed
- Sensitivity analyses
- Data from manufacturers, ecoinvent database v3.10 and Helsingborg Hospital, Sweden
Main finding
As reported in the abstract
Climate impact per use
Difference, gCO2eq (95% reference interval CI)
AuraStraight vs Aura40323% greater
456(390–535)
Igel+ vs Aura40607% higher
856(709–1070)
Igel+ vs AuraStraight68% greater
404(224–608)
Further findings
Sensitivity analysis: high-climate-impact electricity mix
- Aura40 impact exceeded AuraStraight and was similar to Igel+
Original publication
Climate Impact of Laryngeal Masks: Climate and Other Environmental Impacts of Reusable and Single‐Use Laryngeal Masks in Sweden. Acta Anaesthesiol Scand. Published 4 November 2025. doi:10.
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