AUTHOR=Bellini Luca , Maney Jill K. , Zanusso Francesca , Dzikiti Brighton T. TITLE=Use of the oxygen reserve index/FiO2 as a non-invasive index to estimate venous admixture in anesthetized dogs JOURNAL=Frontiers in Veterinary Science VOLUME=11 YEAR=2025 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2024.1495543 DOI=10.3389/fvets.2024.1495543 ISSN=2297-1769