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Cardiovascular Engineering and Technology

, Volume 8, Issue 2, pp 229–235 | Cite as

Computer-Based CPR Simulation Towards Validation of AHA/ERC Guidelines

  • Alka Rachel John
  • M. ManivannanEmail author
  • T. V. Ramakrishnan
Article

Abstract

As per the AHA 2015 and ERC 2015 guidelines for resuscitation, chest compression depth should be between 5 and 6 cm with a rate of 100–120 compressions per minute. Theoretical validation of these guidelines is still elusive. We developed a computer model of the cardiopulmonary resuscitation (CPR) system to validate these guidelines. A lumped element computer model of the cardiovascular system was developed to simulate cardiac arrest and CPR. Cardiac output was compared for a range of compression pressures and frequencies. It was observed from our investigation that there is an optimum compression pressure and rate. The maximum cardiac output occurred at 100 mmHg, which is approximately 5.7 cm, and in the range of 100 to 120 compressions per minute with an optimum value at 110 compressions per minute, validating the guidelines. Increasing the pressure or the depth of compression beyond the optimum, limits the blood flow by depleting the volume in the cardiac chambers and not allowing for an effective stroke volume. Similarly increasing the compression rate beyond the optimum degrades the ability of the chambers to pump blood. The results also bring out the importance of complete recoil of the chest after each compression with more than 400% increase in cardiac output from 90% recoil to 100% recoil. Our simulation predicts that the recommendation to compress harder and faster is not the best counsel as there is an optimum compression pressure and rate for high-quality CPR.

Keywords

Cardiac arrest Cardiopulmonary resuscitation Computer modeling Cardiac output Compression depth Compression rate Recoil 

Notes

Conflict of interest

Alka Rachel John declares that she has no conflict of interest. M. Manivanan declares that he has no conflict of interest. T.V. Ramakrishnan declares that he has no conflict of interest.

Human and Animal Rights

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

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Copyright information

© Biomedical Engineering Society 2017

Authors and Affiliations

  • Alka Rachel John
    • 1
  • M. Manivannan
    • 1
    Email author
  • T. V. Ramakrishnan
    • 2
  1. 1.Touch Lab, Biomedical Research Group, Department of Applied MechanicsIIT MadrasChennaiIndia
  2. 2.SRMC & RIChennaiIndia

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