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Corpuls cpr resuscitation device generates superior emulated flows and pressures than LUCAS II in a mechanical thorax model

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Abstract

The provision of sufficient chest compression is among the most important factors influencing patient survival during cardiopulmonary resuscitation (CPR). One approach to optimize the quality of chest compressions is to use mechanical-resuscitation devices. The aim of this study was to compare a new device for chest compression (corpuls cpr) with an established device (LUCAS II). We used a mechanical thorax model consisting of a chest with variable stiffness and an integrated heart chamber which generated blood flow dependent on the compression depth and waveform. The method of blood-flow generation could be changed between direct cardiac-compression mode and thoracic-pump mode. Different chest-stiffness settings and compression modes were tested to generate various blood-flow profiles. Additionally, an endurance test at high stiffness was performed to measure overall performance and compression consistency. Both resuscitation machines were able to compress the model thorax with a frequency of 100/min and a depth of 5 cm, independent of the chosen chest stiffness. Both devices passed the endurance test without difficulty. The corpuls cpr device was able to generate about 10–40% more blood flow than the LUCAS II device, depending on the model settings. In most scenarios, the corpuls cpr device also generated a higher blood pressure than the LUCAS II. The peak compression forces during CPR were about 30% higher using the corpuls cpr device than with the LUCAS II. In this study, the corpuls cpr device had improved blood flow and pressure outcomes than the LUCAS II device. Further examination in an animal model is required to prove the findings of this preliminary study.

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Acknowledgements

The examination was also funded by Bayerische Forschungsstiftung, project “automation of an electrical driven resuscitation device, AZ1012-12”.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Division of Experimental Surgery, German Heart Center Munich, Munich Heart Alliance, Lazarettstrasse 36, 80636, Munich, Germany

    S. Eichhorn, M. Polski, J. Spindler, A. Stroh, R. Lange & M. Krane

  2. Fakultät für Informatik, Robotics and Embedded Systems, Technische Universität München, Munich, Germany

    A. Mendoza Garcia

  3. GS Elektromedizinische Geräte G. Stemple GmbH, Kaufering, Germany

    M. Heller

  4. DZHK (German Center for Cardiovascular Research) – Partner Site Munich Heart Alliance, Munich, Germany

    R. Lange & M. Krane

Authors
  1. S. Eichhorn
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  2. A. Mendoza Garcia
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  3. M. Polski
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  4. J. Spindler
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  5. A. Stroh
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  6. M. Heller
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  7. R. Lange
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Corresponding author

Correspondence to S. Eichhorn.

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Conflict of interest

Michael Heller is employed at GS Elektromedizinische Geräte G. Stemple GmbH.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Eichhorn, S., Mendoza Garcia, A., Polski, M. et al. Corpuls cpr resuscitation device generates superior emulated flows and pressures than LUCAS II in a mechanical thorax model. Australas Phys Eng Sci Med 40, 441–447 (2017). https://doi.org/10.1007/s13246-017-0537-3

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  • DOI: https://doi.org/10.1007/s13246-017-0537-3

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