I think this may be referring to this study: https://pubmed.ncbi.nlm.nih.gov/29206091/ https://pubmed.ncbi.nlm.nih.gov/29206091/ "Effects of caffeine administr

I think this may be referring to this study: https://pubmed.ncbi.nlm.nih.gov/29206091/ https://pubmed.ncbi.nlm.nih.gov/29206091/ "Effects of caffeine administration on sedation and respiratory parameters in patients recovering from anesthesia" > Caffeine has been shown to enhance the speed of recovery from general anesthesia in murine models, though data in human patients is lacking. This is a retrospective review of intravenous caffeine administration (median dose 150 [125, 250] mg) to 151 heavily sedated patients in the post-anesthesia recovery area, to determine the association between caffeine administration and changes in sedation score, respiratory rate, and oxyhemoglobin saturation.