Respiration-related variations in Pd/Pa ratio and fractional flow reserve in resting conditions and during intravenous adenosine administration.
Rutger G T FeenstraMartijn A van LavierenMauro Echavarria-PintoGilbert W WijntjensValerie E StegehuisMartijn MeuwissenRobbert J de WinterMarcel A M BeijkAmir LermanJavier EscanedJan J PiekTim P van de HoefPublished in: Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions (2021)
Beat-to-beat variations in FFR during plateau hyperemia related to respiration are common, of clinically relevant magnitude, and frequently lead FFR to cross treatment thresholds. A five-beat averaged FFR, overcomes clinically relevant impact of FFR variation.