Introduction: This study estimates the reduction in greenhouse gas (GHG) emissions resulting from 2,020 neuro-emergent telemedicine consultations. We then estimate potential GHG reduction if the program was expanded nationwide. Materials and Methods: Travel distances in miles were calculated for each avoided patient transfer using hospital location data and ArcGIS^® tools. Potential GHG reductions from program expansion were calculated based on state and national stroke Diagnosis-Related Groups (DRGs). Along with average flight distance from a rural hospital to closest level one trauma center. Results: Participation in the Access to Critical Cerebral Emergent Support Services (ACCESS) from May 2015 to July 2017 resulted in 2,020 consultations. Of these consultations, there was a 70% (1,414) reduction in patient transfers. Emission reduction totaled 618,772 kg of carbon dioxide equivalents (CO₂e) (618.77 metric tons) or 0.306 metric tons of CO₂e per patient. Expanding the program across New Mexico and similar U.S. areas resulted in potential reductions of 4,307 (IQR 3,386-5,274) and 213,279 (IQR 169,320-263,570) metric tons of CO₂e. Conclusion: Transport accounts for 26% of global CO₂ emissions and is one of the few industrial sectors where emissions are still growing. What makes this study more impactful is that aviation's emissions are not part of the Kyoto Protocol and little is being done in this sector. GHG reduction was not the main intention of the ACCESS program, but it has shown to be a significant by-product.

J. Gaxiola Montoya

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