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Drochon A, Fouquet O, Baufreton C. Extracorporeal circulation during on-pump cardiac surgery: An evaluation of the energy equivalent pressure index based on waveforms decomposition in harmonics. Artif Organs. 2021;45(8):861-865doi: 10.1111/aor.13928.
Drochon, A., Fouquet, O., & Baufreton, C. (2021). Extracorporeal circulation during on-pump cardiac surgery: An evaluation of the energy equivalent pressure index based on waveforms decomposition in harmonics. Artificial organs, 45(8), 861-865. https://doi.org/10.1111/aor.13928
Drochon, Agnès, et al. "Extracorporeal circulation during on-pump cardiac surgery: An evaluation of the energy equivalent pressure index based on waveforms decomposition in harmonics." Artificial organs vol. 45,8 (2021): 861-865. doi: https://doi.org/10.1111/aor.13928
Drochon A, Fouquet O, Baufreton C. Extracorporeal circulation during on-pump cardiac surgery: An evaluation of the energy equivalent pressure index based on waveforms decomposition in harmonics. Artif Organs. 2021 Aug;45(8):861-865. doi: 10.1111/aor.13928. Epub 2021 Mar 26. PMID: 33529368.
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Artif Organs. 2021 Aug;45(8):861-865. doi: 10.1111/aor.13928. Epub 2021 Mar 26.

Extracorporeal circulation during on-pump cardiac surgery: An evaluation of the energy equivalent pressure index based on waveforms decomposition in harmonics.

Artificial organs

Agnès Drochon, Olivier Fouquet, Christophe Baufreton

Affiliations

  1. Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, CNRS, University of Bordeaux, Talence, France.
  2. Department of Cardio -Thoracic Surgery, University-Hospital Angers, Angers, France.

PMID: 33529368 DOI: 10.1111/aor.13928

Abstract

The use of pulsatile perfusion instead of nonpulsatile perfusion during cardiopulmonary bypass 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 energy equivalent pressure 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 mm Hg), but that it can be improved by changing the relative shapes of the pressure and flow waves.

© 2021 International Center for Artificial Organs and Transplantation and Wiley Periodicals LLC.

Keywords: cardiac surgery; energy equivalent pressure; extracorporeal circulation; pulsatile flow

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