Vandenbulcke L, et al. - This study examined the impacts of an opioid-based anaesthesia induction on microvascular reactivity, presuming impaired microvascular function and minimal changes in blood pressure. Oxygen consumption was found to be decreased following anaesthesia induction, in addition to longer recovery times and slower rates of recovery, which, in turn, was indicative of an impaired microvascular reactivity after anaesthesia induction.