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The impedance cardiogram is an indicator of CPR effectiveness for out-of-hospital cardiac arrest victims.

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Di Maio, RC, Navarro, C, Cromie, NA, Anderson, JMCC and Adgey, AAJ (2010) The impedance cardiogram is an indicator of CPR effectiveness for out-of-hospital cardiac arrest victims. European Heart Journal, Supplement, 12 . F123. [Journal article]

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URL: http://ovidsp.ovid.com/athens/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=emed9&AN=70301728; http://openurl.ac.uk/athens:uls/Resolver/?genre=article&sid=OVID:emed9&issn=1520-765X&isbn=&volume=12&issue=&spage=F123&date=2010&pid=<author>Di+Maio+R.C.

Abstract

Background: The ERC guidelines place a greater emphasis on the importance of external cardiac massage and advocate the prompt initiation of effective bystander CPR to significantly reduce mortality due to out-ofhospital CA. An algorithm has been developed which utilizes distinctive features in the impedance cardiogram (ICG) to ensure effective chest compressions are administered by the operator. Methods: At the time of cardiac arrest the HeartSine AED was applied using AED electrodes adhered to the chest wall to the right of the upper sternum and over the cardiac apex. The ECG, ICG and any CPR were recorded electronically for downloading later using the data recovery unit. Thresholds were pre-determined following retrospective analysis of 170 cases of CPR. The amplitude of the ICG signal, if outside the minimum threshold, was classified as CPR. Sensitivity and specificity scores were calculated as shown below in table 1. Results: See table 1. Conclusion: Both the ICG-FORCE and ICG-SPEED CPR management tools will enhance CPR efficacy for both lay users and minimally trained bystanders by continuously advising on the quality of the compressions administered. The administration of effective chest compressions can significantly reduce the chances of neurological impairment due to inadequate cerebral oxygenation following a CA. The above results merit further investigation using ICG to develop an algorithm to detect the presence of a pulse. (Table Presented).

Item Type:Journal article
Keywords:victim; impedance cardiography; heart arrest; hospital; compression; thorax; algorithm; pulse rate; mortality; resuscitation; heart massage; electrode; thorax wall; sternum; sensitivity and specificity; oxygenation; electrocardiogram
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
ID Code:19182
Deposited By:Mrs Ann Blair
Deposited On:29 Jul 2011 13:23
Last Modified:29 Jul 2011 13:23

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