Use of the NexfinTM device to detect acute arterial pressure variations during anaesthesia induction

Editor’s key points † Continuous measurement of beat-to-beat arterial pressure (AP) during the dynamic phases of anaesthesia facilitates recognition and treatment of acute variations. † The non-invasive AP monitor NexfinTM was compared with invasive AP (IAP) measurements during induction of anaesthesia. † NexfinTM reliably and quickly detected acute changes in AP, but its accuracy was insufficient to replace IAP monitoring. Background. Standard non-invasive arterial pressure (AP) measurements are discontinuous. By providing non-invasive beat-to-beat AP measurements, NexfinTM might limit duration of intraoperative hypotension and hypertension. We assessed the ability of NexfinTM to detect AP variations by comparing its trending ability with invasive AP monitoring.