HPI Index With GDHT in Predicting Hypotension In General Anesthesia Patients

"The HPI algorithm is only available on the EV1000, Hemosphere and Flotrac monitoring systems and requires the use of a Flotrac sensor connected to an arterial line (Edwards Lifesciences Corp., Irvine, CA, USA). The Flotrac sensor has a splitter which enables the splitting of the arterial blood pressure signal to facilitate a blood pressure signal on both the anesthesia machine monitor (standard care) and the HemoSphere monitor (study).~In the intervention arm we asked the anesthesiologist and anesthesia nurse to use the study treatment flowchart . If the HPI alarm goes off, which entails both a sound and a flickering light, we ask the anesthesiologist to act upon this alarm immedietaly. Use of the study treatment flowchart ensures that the anesthesiologist has to think about the underlying cause. The HemoSphere/EV1000 with HPI software has a second screen with variables that provide information about the underlying cause of the predicted hypotension."