Extracorporeal circulation during on‐pump cardiac surgery: an evaluation of the Energy Equivalent Pressure (EEP) index based on waveforms decomposition in harmonics
Language
en
Article de revue
This item was published in
Artificial Organs. 2021
Wiley
Date
2021English Abstract
The use of pulsatile perfusion (PP) instead of Non-Pulsatile Perfusion (NP) during cardiopulmonary bypass (CPB) continues to be a source of debate. The disagreements among the conclusions of the published studies may be ...Read more >
The use of pulsatile perfusion (PP) instead of Non-Pulsatile Perfusion (NP) during cardiopulmonary bypass (CPB) continues to be a source of debate. The disagreements among the conclusions of the published studies may be due to different factors: differences in the type of patients included in the studies, differences in the protocol of the studies and difficulty to quantify the pulsatility of the flow. In the present paper, we propose a quantitative evaluation of Shepard's EEP index, based on the harmonic decomposition of the physiological aortic pressure and flow rate signal. It is thus demonstrated that the surplus energy provided by pulsatile flow remains moderate (of order 10 mmHg), but that it can be improved by changing the relative shapes of the pressure and flow waves.Read less <
English Keywords
cardiac surgery
extra-corporeal circulation
Energy Equivalent Pressure
pulsatile flow
Origin
Hal imported